Problem in writing exploits

[glorfind3l at gmail.com (Cristiano de Nunno)]

> Sounds like you are running into one of the security features in the Linux
> kernel (I am assuming Linux). Google for exec-shield for an idea. Usually
> these features are fairly easy to turn off. For example exec-shield is:
>
>         echo "0" > /proc/sys/kernel/exec-shield
>         echo "0" > /proc/sys/kernel/exec-shield-randomize
>
> However all of this is way beyond the list charter. I'd recommend a couple
> of
> books, such as "Gray Hat Hacking", "Hacking: The Art of Exploitation", and
> "The Shellcoder's Handbook".
>
> -SN



I'm running Ubuntu Dapper, and I followed your advice using

echo "0" > /proc/sys/kernel/randomize_va_space

to disable stack randomization.

Now if I check with gdb the esp reg value is always the same, but when I
attempt to exploit the program with metasploit I get "Read: bad address"
error and payloads don't work.

How can I do?
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