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RE: Hacking to Xp box
From: Eduardo Suzuki <eduardo.ac.suzuki () gmail com>
Date: Sat, 3 Sep 2005 03:21:01 -0300

        Hi, Marco!

        IMO, I think it's harder to attack a workstation compared to a
server through a network, since servers must have some open port in
listening state. On a workstation the user is the weakest point most of the
time, while on a server there are many other parts to take into account. If
there is a firewall in place (for example, the one that comes with XP SP2),
which attacks are possible through a network? AFAIK just a few. Windows XP
restricts most of the attacks that use anonymous connections. Service Pack 2
restricts even more. If you are a domain admin, there are many
possibilities, but that's not the case here.
        What do you mean by "executing a jpg or a gif file"? I know there
are buffer overflow vulnerabilities that can be exploited when opening an
image, but it's not a trivial attack. I'm not sure (because I didn't try
it), but I think it's even harder to do it when you need to merge an
executable into an image using a joiner. I'd like to know what you think
about it.
        Regarding the hxdef rootkit, you can find it out by using
RootKitRevealer from SysInternals. It's available at
http://www.sysinternals.com/Utilities/RootkitRevealer.html. BTW, hxdef isn't
considered an attack tool. It's used after you successfully got access to a
computer, when you want to hide files, open ports and so on.
        Just my $0.02.
        Regards,

        Eduardo Suzuki
        esuzuki_br () pop com br
        Eduardo.AC.Suzuki () gmail com
 
"The essential is invisible to the eyes."

-----Original Message-----
From: Marco Monicelli [mailto:marco.monicelli () marcegaglia com] 
Sent: Friday, September 02, 2005 6:12 AM
To: Juan B
Cc: pen-test () securityfocus com
Subject: Re: Hacking to Xp box
Importance: High

Ciao juan!

If the CEO box is fully patched and FW is enabled, then your mission is a
little bit more difficult to accomplish. Besides, there are thousands of
recent exploits for windows which you can try. For example, did you try the
Universal exploit for the Plug and Play vulnerability? It is published
everywhere. You can try with more recent exploits than the DCOM exploit
which is at least 3 years old.

If you want to try with the trojan, I would suggest you to google for
Bifrost, which is a Remote Administration Tool (you can call it trojan if
you prefer) that is completely UNDETECTED by any AV (at the moment it is
still 100% undetected). You can pack it inside any file (exe, jpg, gif....)
and it will be executed silently and hiddenly. Moreover, Bifrost can bypass
firewalls injecting itself into Explorer.exe process. Another good
UNDETECTED tool is hxdef rootkit.

Arp poisoning could do the job but why not trying to steal the SAM file and
to crack it? You can do that remotely if the machine has the ports you
mentioned opened. I bet you know some tool to steal the SAM and to crack
it. I love SAMDUMP for example. ;)

Last but not least, you can try with a Denial of Service to show your CEO
how easily a kid can prevent you from working with a simple DoS.

Why not sniffing the network? There are many undetected sniffers around the
Web.

Just my 2 cents ;)

Marco






Hi Guys

Please give me a hend here.

Im trying to penetrate the CEO box to show him why we
need better security in our company, he told me to
show me how it can be done. he has xp pro sp 2
with all the pathches installed and FW enbled but I
cant ! I tried to use metasploit with the ms rpc dcom
exploit but it didnt worked. nessus found port 135 139
2000 and ntp are opened and also he can read some smb
shares and also outputed that this host doesnt disgard
SYN packets that have the FIN flag set. and port 2000
(callback is open).
what I can try more to  break this box? any ideas? I
know I
allways can try to arp poison his arp table and pass
all the machines traffic throw my laptop to capture
some passwords but this is enough. or send him a
trojan but we have a good anti virus protection  .


Does some of you have Ideas ?

Thanks a lot !

Juan



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