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

Basic mitigation

This section talks about the prevention of vulnerabilities. A lot of vulnerabilities exist because of the functionalities that they provide.

For example, in the first section, File upload vulnerabilities, we talked about allowing the upload of any file extension. The ideal case is to check the file type, if a user is uploading a file; it should be an MP3 or a media file, not a PHP file or some executable code. We should never allow users to upload executables. Filters can be used to check the extension. The best way to do this is to check the file instead of just checking the extension, because files can bypass the extension check. Check the picture or the media instead of relying on the extension.

In the second section, Code execution vulnerabilities, we explored how we can run any code on a target computer. We should avoid allowing users to run code on the server...