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Exploit Development


Course Overview

An exploit (from the verb to exploit, in the meaning of using something to ones own advantage) is a piece of software, a chunk of data, or sequence of commands that takes advantage of a bug, glitch or vulnerability in order to cause unintended or unanticipated behavior to occur on computer software, hardware, or something electronic (usually computerized). This frequently includes such things as gaining control of a computer system or allowing privilege escalation or a denial-of-service attack.

There are several methods of classifying exploits. The most common is by how the exploit contacts the vulnerable software. A remote exploit works over a network and exploits the security vulnerability without any prior access to the vulnerable system. A local exploit requires prior access to the vulnerable system and usually increases the privileges of the person running the exploit past those granted by the system administrator. Exploits against client applications also exist, usually consisting of modified servers that send an exploit if accessed with client application. Exploits against client applications may also require some interaction with the user and thus may be used in combination with social engineering method. Another classification is by the action against vulnerable system: unauthorized data access, arbitrary code execution, denial of service.

Many exploits are designed to provide super user-level access to a computer system. However, it is also possible to use several exploits, first to gain low-level access, then to escalate privileges repeatedly until one reaches root. Normally a single exploit can only take advantage of specific software vulnerability. Often, when an exploit is published, the vulnerability is fixed through a patch and the exploit becomes obsolete for newer versions of the software. This is the reason why some Black-Hat hackers do not publish their exploits but keep them private to themselves or other hackers.

Job Roles

Exploit Developer and Researcher.

Exploit Development Domains

The Exploit Development Lab exam is only required in event of additional verification of skills and published work is needed.

The following domains are covered in the Exploit Development lab exam:

  1. The x86 Architecture
  2. Overflow attacks
  3. Advanced exploiting concepts
  4. Exploit writing with Metasploit

Prerequisites

  • Programming experience.
  • Assembly Language knowledge.
  • Understanding of common executable file formats / Debugging Concepts.
  • Expertise in Reverse Code Engineering.
  • Thorough knowledge of Web Applications.
  • Experience with Shellcodes / Metasploit.
  • Experience in Fuzzing & Exploit Development.
  • In-Depth understanding of both Windows & Linux/Unix Architecture.


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