slowly beginning to understand

[neil-on-metasploit at restricted.dyndns.org (Neil)]

Hey guys, 

I read the articles sent to me earlier. I am beginning to understand how a 
network daemon can be exploited. Like in the example mem.c, there was a 
declaration on a variable that was statically allocated with a 64 byte char 
or int. I couldn't remeber. So if we actually send more than 64 byte, the 
daemon experiences segmentation fault. So in that article, it used gdb to 
step to each instruction. This is however in the opensource world. What if 
we were trying to reverse engineer a Microsoft or commercial binary network 
service/daemon, what is the tool to use? 

Going back to gdb, what should we look for that identifies that a variable 
was set with a fixed memory allocation? 

Thanks guys. 

neil