The Linux box should be capable of netbios name spoofing and cryptographic authentication attacks. Combine the two and compare hashes to recovered Linux passwords and Robert's your fathers brother.

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On 17 Sep 2011, at 09:04, Ian Hayes <cthulhucalling (at) gmail (dot) com [email concealed]> wrote:

> On Tue, Sep 13, 2011 at 12:45 PM, Doyle, Jason (10090)
> <jason.doyle (at) protiviti (dot) com [email concealed]> wrote:
>>
>> When performing an internal penetration test of a windows domain with an objective of acquiring domain administrator credentials and/or credit card >information, what is considered useful information on a Linux system? I'm in the situation where the only vulnerability I can find and exploit is on a >Linux web server. Of course, I can attempt to crack all the local password hashes, and try to use those credentials on other systems. I'm just >curious if others have found other types of information / methods that have brought them closer to compromising windows systems and / or the >windows domain. At this time I don't know what other services are hosted on the Linux system.
>
> There are a couple of things that come to mind... first would be
> password re-use. Second, if you've compromised a web server and it's
> internal, you could leverage that with a little iframe fun and
> browser-autopwn in Metasploit. Have you rummaged through the
> filesystem, especially the user home directories and /etc config
> files? Are there any other services running on the Linux box?
>
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