Developing an Exploit Code

["Dev Null" <devj.nullj () gmail com>]

Hello ALL

I am trying to learn how an exploit code is developed. I have googled
for help but
did not arrive at anything useful. What I have is only poc's and
descriptions of vulnerabilities at various places. I would like to
learn how an exploit can be developed looking at a poc. Source of
existing exploits would prove helpful but I could not find anything.
It would really help if somebody can:

1- Point to a resource where I can read something about development of
exploit code.

2- Example source code of some existing vulnerabilities would really help.

Thanks all.

--devj