Question

Give an example or steps for Binary Exploitation.​

Answer 1

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Introduction

Capture the Flag

Find a CTF

Find a Job

Vulnerability Discovery

Auditing Source

Auditing Binaries

Auditing Webapps

Exploit Creation

Binary Exploits 1

Binary Exploits 2

Webapp Exploits

Forensics

Toolkit Creation

Toolkit Prep

Operational Tradecraft

Case Studies

Contributing

Published with GitBook

Exploiting Binaries 1

Binary exploitation is the process of subverting a compiled application such that it violates some trust boundary in a way that is advantageous to you, the attacker. In this module we are going to focus on memory corruption. By abusing vulnerabilities that corrupt memory in software we can often rewrite critical application state information in a way that allows us to elevate privileges inside the context of a particular application (like a remote desktop server) or perform arbitrary computation by hijacking control flow and running code of our choosing.

If you're trying to find bugs in compiled C programs, it's important to know what you're looking for. Start with identifying where the data you send to the program is used. If your data is stored in a buffer, take note of the sizes of them. Programming in C without errors is very difficult and the CERT C Coding Standard catalogues many of the ways that errors can come about. Paying attention to commonly misused APIs can be a quick path to success.

If you're trying to find bugs in compiled C programs, it's important to know what you're looking for. Start with identifying where the data you send to the program is used. If your data is stored in a buffer, take note of the sizes of them. Programming in C without errors is very difficult and the CERT C Coding Standard catalogues many of the ways that errors can come about. Paying attention to commonly misused APIs can be a quick path to success.Once a vulnerability is identified it should be used to compromise the integrity of the program, however, there are a variety of ways to achieve this goal. For programs such as web servers, obtaining the information from another user may be the end goal. In others, changing your permissions may be helpful, for example changing the permissions of a local user to the administrator.