July 2011
Intermediate to advanced
328 pages
9h 1m
English
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Porting a Buffer Overflow
Our first example is a typical remote buffer overflow that needs only a jump to the extended stack pointer (JMP ESP) instruction to reach the shellcode. This exploit, called the “MailCarrier 2.51 SMTP EHLO / HELO Buffer Overflow Exploit,” uses MailCarrier 2.51 SMTP commands to cause a buffer overflow.
Note
You’ll find the exploit and a vulnerable application at http://www.exploit-db.com/exploits/598/.
But this is an older exploit, originally written for Windows 2000. When you run it now, it doesn’t work quite as you’d expect. Conveniently, a Metasploit module is already in the Framework to implement this exploit, although it could use some improvement. After a little time investigating with varying buffer lengths, you will ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.