Book Image

Learn Ethical Hacking from Scratch

By : Zaid Sabih
5 (1)
Book Image

Learn Ethical Hacking from Scratch

5 (1)
By: Zaid Sabih

Overview of this book

This book starts with the basics of ethical hacking, how to practice hacking safely and legally, and how to install and interact with Kali Linux and the Linux terminal. You will explore network hacking, where you will see how to test the security of wired and wireless networks. You’ll also learn how to crack the password for any Wi-Fi network (whether it uses WEP, WPA, or WPA2) and spy on the connected devices. Moving on, you will discover how to gain access to remote computer systems using client-side and server-side attacks. You will also get the hang of post-exploitation techniques, including remotely controlling and interacting with the systems that you compromised. Towards the end of the book, you will be able to pick up web application hacking techniques. You'll see how to discover, exploit, and prevent a number of website vulnerabilities, such as XSS and SQL injections. The attacks covered are practical techniques that work against real systems and are purely for educational purposes. At the end of each section, you will learn how to detect, prevent, and secure systems from these attacks.
Table of Contents (24 chapters)
22
Discovering Vulnerabilities Automatically Using OWASP ZAP

XSS protection

Now let's talk about how we can prevent XSS vulnerabilities. These vulnerabilities exist because whenever a user enters something into a textbox or a parameter, that input is displayed in the HTML, so it's treated as if it's part of the page. Therefore, if there is JavaScript in it, the code is executed. To prevent this exploit, the best thing to do is to try and minimize the usage of untrusted input. Given this exploit, we should try to minimize occasions where the user inputs something or where something is input from parameters. Also, make sure that we always escape whatever is going to be displayed or used in the HTML page, because XSS can not only be injected into places where things are displayed on the page, but it can also be injected into parameters of certain elements of the HTML page. Escaping means that we convert each of the characters...