Re: penetration test in a Windows 2000/NT network
From: Chris Beek (c.beek_at_pinkroccade.com)
Date: 05/14/03
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To: <pen-test@securityfocus.com> Date: Wed, 14 May 2003 21:22:42 +0200
As mentioned in the email from Mark Ng, L0phtcrack will be your tool. One of
the scenario's you could try is to take a laptop, install l0phtcrack on it
and put it with a valid ip-adress in the network (most of the networks do
have dhcp, so that won't be the hardest).
Next you have to setup L0phtcrack in "listening/sniffing" mode. Also create
a shared directory on this machine.
From your station you will send around an email which contains an URL (which
will connect towards the share). Make the email attractive so people are
triggered to click. When clicking to the URL,Windows will notice that it's a
Share and sends the NTLM hashes.
If the network is switched, you have to use a combination of the tool
Ettercap and later on L0phtcrack to decrpt the passwords. You can use
Ettercap the spoof (be carefull) the switch, so all ports can be sniffed.
Choose for storing the sniffed traffic towards a file. This file can later
on be analyzed by L0phtcrack.
Kind regards,
Chris Beek
Security Consultant
Pinkroccade RISC Tiger Team
----- Original Message -----
From: "heron heron" <h.heron@firemail.de>
To: <pen-test@securityfocus.com>
Sent: Wednesday, May 14, 2003 3:29 PM
Subject: penetration test in a Windows 2000/NT network
> Hi,
>
> I will accomplish a penetration test in a Windows 2000/NT network shortly.
A
> goal is to get confidential information (files) and if possible get admin
> rights. I will be with my computers in the LAN. A computer for normal uses
(thus
> no Admin access) is likewise put to me at the disposal.
>
> Is there a possibility on a Windows 2000 computers (physical access is
possible)
> to attain admin rights without to overwrite the admin account. Background:
I
> would like try to crack the password of the local admin (e.g. by means of
pwdump
> and John). There ist the possibility that all admin passwords (also for
the
> domain) is alike.
>
> Is there a tool, with which I can crack NTLMv2 hashes. Background: I will
try to
> sniff hashes during the registration at the DC (e.g. CAIN, ettercap) and
to
> crack them. Unfortunately me is still no tool known in order to crack
NTLMv2
> hashes.
>
> A further possibility at to come to information, would be the employment
of a
> SMB Proxy. By ARP Spoofing it would be nevertheless theoretically possible
to
> intercept the LM/NTLM(v1/v2) authentication . Then the attacker could
itself
> instead announce at the server. Does it give there already such a Tool?
>
> Who has suggestions? For Tools please give always in the Web URL (if
possible of
> the programmer).
>
> Greeting
> Heron
>
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----------------------------------------------------------------------------
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- Previous message: Alfred Huger: "SecurityFocus Call for Pen-Test Articles"
- In reply to: heron heron: "penetration test in a Windows 2000/NT network"
- Next in thread: Ballowe, Charles: "RE: penetration test in a Windows 2000/NT network"
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