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RE: VmWare and Pen-test Learning
From: <salexander () frontporch com>
Date: Mon, 7 Aug 2006 09:18:10 -0700

A handful of suggestions:

1) Setup a Snort box.  Use Snort to monitor your pen-test practice.
What scans and exploits will Snort detect?  Can you avoid this?  Is
there something that Snort doesn't detect that you can write a rule for?

2) Use Nmap.  Experiment with different scanning options.  Sniff the
traffic and look at it.   Do you understand the difference between the
different scan types?  Use OS identification and service detection.  Are
the results correct?  Read Fyodor's papers on scanning and OS
identification:

    The Art of Scanning: http://www.phrack.org/phrack/51/P51-11  
    Remote OS detection via TCP/IP Stack Fingerprinting:
http://www.phrack.org/phrack/54/P54-09 

3) Find some exploits that will allow you to remotely compromise your
test machines.  Use them.  What happens?  Do you have administrative
access?

4) Setup a tftp server on your client machine.  Use the tftp server to
hold any tools you'll need to put on to a compromised machine.  From the
compromised servers, use the tftp client to download your tools.  What
other methods can you use to get your tools?  Try using windows file
sharing from the command line.  What about NFS on Unix?

5a) On Unix, copy /etc/shadow (and/or /etc/passwd, /etc/master.passwd).
Use John the Ripper (www.openwall.com) to crack the passwords.
Experiment with some of the different options available in John
(dictionary attacks, brute force, single mode).  You may as well setup
some additional accounts on the machine first.  Use a combination of
simple and complex passwords.  How long does it take to crack them?  Is
it what you expected?  Can you enable a different password hash rather
than crypt(3); perhaps md5crypt or bcrypt (blowfish).  How much longer
does it take to crack these hashes if you use the same passwords?  Note:
You'll have to *change* the passwords once a new hash is set as the
default for the system; just reuse the same passwords for comparison.

5b) On Windows, use pwdump, lsadump and creddump to recover password
hashes (or in the case of creddump, cleartext passwords).  Use John the
Ripper and L0phtCrack to brute-force the passwords.  Google for Rainbow
Tables.  Generate your own tables and use them with Cain and Abel to
crack the passwords.  It should be much faster.  Do you realize why
Rainbow Tables are a big deal?  Be sure to take a good look at Cain in
step 13 below.

5c) This is a shameless plug.  Read:
http://www.usenix.org/publications/login/2004-06/pdfs/alexander.pdf

6) Use netcat to bind a command shell to a port.  Telnet to it (or use
netcat) to verify that it works.  Then, use netcat to listen on your
client machine and run netcat on the server to open a connection to the
client and bind the command shell to that connection.  In the first
case, you can connect in to the server and get command line access.  In
the second situation, netcat is calling out to the client.  Do you
understand why this matters?

7) Pretend that one of your servers (server A) is behind a firewall.
Pretend that you can access this machine from one of your other servers
(server B).  Use netcat and/or fpipe to redirect ports on server B so
that you can scan/attack one or more services directly from your client
machine.

8) Setup and use Nessus.  What vulnerabilities does it report?  Can you
verify them manually?

9) Use Ettercap to play man-in-the-middle.  Capture passwords from a
telnet, ftp and/or pop3 connection to one of your servers.  Do you know
how and why the attack works?  Google is your friend.

10) Go to www.smashguard.org.  Click on The Buffer Overflow Page.  Read
"How to Write Buffer Overflows" by Mudge and "Smashing the Stack for Fun
and Profit" by Aleph One.  Try to write a simple stack-based buffer
overflow.  This will require that you know C and a bit of assembly.
Also, this will probably be easiest on an older Linux distro (without
stack randomization or any other stopgaps).  

10b) On www.smashguard.org, under Famous Buffer Overflow Vulnerabilities
and Worms, read Spafford's analysis of the Internet Worm.  It's old but
it should still give you some insight into how an automated attack can
work.  Read some of the other articles/reports under that heading.  Do
you understand the attacks?

11) Focus on specific services (MySQL, IIS).  What can you do to attack
these services?  What can you do to prevent the attacks?

12) This should probably be earlier on the list but...Purchase one or
more books such as Hacking Exposed.  Try some of the attacks and tools
in the book.  Sniff the traffic and/or research the attacks.  How do
they work?  Can you prevent them?  

13) Go to www.sectools.org/.  Download tools that sound interesting.
Experiment, have fun.    



Good luck,

Steven

-----Original Message-----
From: Erin Carroll [mailto:amoeba () amoebazone com] 
Sent: Sunday, August 06, 2006 5:59 PM
To: 'IRM'; pen-test () securityfocus com
Subject: RE: VmWare and Pen-test Learning

Welcome to the pen-test world John. 

Now before everyone freaks out about why I let essentially a basic
newbie question on the list here's why and what kind of responses I was
hoping for:
I like to play pool. But in order to get better I do lots of drills of
simple shots over and over. Some people prefer to practice in other
ways. In a similar vein, what types of exercises should John do to
increase his skills and expand his knowledge? I know how I practice my
pen-test skills to stay sharp but hearing some other methods people use
might give me some ideas or other ways to tackle things.

So, he's got Vmware and a couple of images to play with. What kinds of
drills should he work on?

--
Erin Carroll
Moderator
SecurityFocus pen-test list
"Do Not Taunt Happy-Fun Ball" 

-----Original Message-----
From: IRM [mailto:irm () iinet net au]
Sent: Sunday, August 06, 2006 1:58 AM
To: pen-test () securityfocus com
Subject: VmWare and Pen-test Learning

Hi all,

I would like to learn about Penetration testing or maybe Vulnerability

Assessment (?) or whatever it is called. I have set up a few machines 
on VMWare - Windows 2000 Server, Windows 2003 Server and Solaris 9.0. 
These machines are unpatched with no updates or service pack.

Basically what I would like to achieve in this task is to demonstrate 
that these machine are not secured. Thus by using a well-known exploit

that are available in the public space , people can easily exploit the

system and gain administrator privilege either by Local exploit or 
Remote Exploit.

Now, the question is that, where to start? Can people suggest me where

should I start?

Should I start using Nessus and identify all the vulnerabilities that 
are applicable on these machines? And start to do some research on 
securityfocus.com i.e. to find the exploit?

Or maybe if there is a list of vulnerabilities for each of the 
operating system, I think that would be great! Because I know that 
Unicode Exploit on IIS 4.0 is quite famous at that time. Is there 
similar thing on Windows 2003? Is there a list available like TOP 10 
Exploit or something?

Cheers,
John



 


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This List Sponsored by: Cenzic

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Choice Award from eWeek. As attacks through web applications continue to
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penetration 
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------------------------------------------------------------------------------
This List Sponsored by: Cenzic

Concerned about Web Application Security?
Why not go with the #1 solution - Cenzic, the only one to win the Analyst's
Choice Award from eWeek. As attacks through web applications continue to rise,
you need to proactively protect your applications from hackers. Cenzic has the
most comprehensive solutions to meet your application security penetration
testing and vulnerability management needs. You have an option to go with a
managed service (Cenzic ClickToSecure) or an enterprise software
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help you: http://www.cenzic.com/news_events/wpappsec.php
And, now for a limited time we can do a FREE audit for you to confirm your
results from other product. Contact us at request () cenzic com for details.
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