Buffer Overflows: Anatomy of an Exploit

[Nytro]

Buffer Overflows: Anatomy of an Exploit

A Look at How Systems are Exploited, and Why These Exploits Exist

Joshua Hulse

n3v3rm0r3.nevermore at gmail.com

January 10, 2012

This paper will look at how buffer overflows occur on the stack. It will outline

how the stack should be visualised when software engineers code in languages that

requires manual memory management(assembly, c, c++, etc) and the importance of

the ‘null terminating character’ in possible vulnerabilities.

Before considering the exploitation of systems and the methods that should be

employed to remove them, some time will be spent explaining the stack in the x86

architecture, the flat memory model employed by modern operating systems how

payloads are written and delivered to exploited programs.

Download:

http://www.exploit-db.com/download_pdf/18346