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Kali Linux - An Ethical Hacker's Cookbook

Kali Linux - An Ethical Hacker's Cookbook

By : Himanshu Sharma
3.8 (20)
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Kali Linux - An Ethical Hacker's Cookbook

Kali Linux - An Ethical Hacker's Cookbook

3.8 (20)
By: Himanshu Sharma

Overview of this book

With the current rate of hacking, it is very important to pentest your environment in order to ensure advanced-level security. This book is packed with practical recipes that will quickly get you started with Kali Linux (version 2016.2) according to your needs, and move on to core functionalities. This book will start with the installation and configuration of Kali Linux so that you can perform your tests. You will learn how to plan attack strategies and perform web application exploitation using tools such as Burp, and Jexboss. You will also learn how to perform network exploitation using Metasploit, Sparta, and Wireshark. Next, you will perform wireless and password attacks using tools such as Patator, John the Ripper, and airoscript-ng. Lastly, you will learn how to create an optimum quality pentest report! By the end of this book, you will know how to conduct advanced penetration testing thanks to the book’s crisp and task-oriented recipes.
Table of Contents (13 chapters)
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6
Wireless Attacks – Getting Past Aircrack-ng

Introduction


In a software program, buffer overflow occurs when a program, while writing data to a buffer, overruns the buffer size allocated and starts overwriting data to adjacent memory locations.

A buffer can be considered a temporary area in the memory allocated to a program to store and retrieve data when needed.

Buffer overflows have been known to be exploited since long back.

When exploiting buffer overflows, our main focus is on overwriting some control information so that the flow of control of the program changes, which will allow our code to take control of the program.

Here is a diagram that will give us a basic idea of an overflow happening in a buffer:

 

From the preceding diagram, we can assume this is what a program looks like. Since it is a stack, it starts from bottom and moves toward the top of the stack.

Seeing the preceding diagram, we also notice that the program has a fixed buffer to store 16 letters/bytes of data.

We first enter the 8 characters (1 char=1 byte); on the right...

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