Ethical Hacking Training at InfoSec Institute

Learn to find vulnerabilities before the bad guys do! Gain real world hands on hacking experience in our state of the art hacking lab. Course designed and taught by expert instructors with years of penetration testing experience. 12 student maximum in every class. Certification attempt included in every package.
Computer Forensics Training at InfoSec Institute

Gain the in-demand skills of a certified computer examiner, learn to recover trace data left behind by fraud, theft, and cybercrime perpetrators. Discover the source of computer crime and abuse at your organization so that it never happens again. All of our class sizes are guaranteed to be 12 students or less to facilitate one-on-one interaction with one of our expert instructors.




Computer Forensics Computer-Forensics
[Top] [All Lists]

Re: HDA unreadable & NTFS partition with fatal errors ?

Subject: Re: HDA unreadable & NTFS partition with fatal errors ?
Date: Mon, 26 Sep 2005 19:34:05 +0200
On 2005-09-19 Bénoni MARTIN wrote:
I'm currently doing auditing a hacked server (Win 2K3 SP 1) and
something odd happends on a partition with dada (D:):

- Under Win 2K3 (after booting with it), the partition is visible and
  found as "free space", but no way to create a partition on it (fatal
  error occurs during the task).
- Under Win 2K3 (with the recuperation console), the partition is
  visible as "D:", but no way either to check the volume with chkdsk,
  chkntfs ot any command like that.
- As there ware some free space on the hard disk (another than the D:
  partition), I tried to set up a Fedora Core 4 on it, but failed when
  tried to install it with Druid: "HDA is not readeable"

Out of curiosity: why are you trying to *write* to that harddisk when
doing a forensic audit?

I did not tried to format the D: partition as I want first to try to
get the data on it to try to understand what happened.

Anyone has an idea of how can I make the partition be readable again
without formatting it (what can I do if booting under another OS, or
is there a useful tool for recovering data on unreadable partition) ?
I have obviously full access to the box, but I am really at a loss for
an idea to access trhe partition :(

Maybe the MBR of that disk is defective. You could try running the
diagnostic utility of the harddisk vendor to verify that. As for
recovering the data: I would create an image of the entire disk and
restore it to a known-good harddisk. Then you could run gpart [1] or
TestDisk [2] and try to recover the partition.

HTH

[1] http://www.stud.uni-hannover.de/user/76201/gpart/
[2] http://www.cgsecurity.org/index.html?testdisk.html

Regards
Ansgar Wiechers
-- 
"Another option [for defragmentation] is to back up your important files,
erase the hard disk, then reinstall Mac OS X and your backed up files."
--http://docs.info.apple.com/article.html?artnum=25668

<Prev in Thread] Current Thread [Next in Thread>
  • Re: HDA unreadable & NTFS partition with fatal errors ?, Ansgar -59cobalt- Wiechers <=