Book Image

Mastering Metasploit - Fourth Edition

By : Nipun Jaswal
Book Image

Mastering Metasploit - Fourth Edition

By: Nipun Jaswal

Overview of this book

Updated for the latest version of Metasploit, this book will prepare you to face everyday cyberattacks by simulating real-world scenarios. Complete with step-by-step explanations of essential concepts and practical examples, Mastering Metasploit will help you gain insights into programming Metasploit modules and carrying out exploitation, as well as building and porting various kinds of exploits in Metasploit. Giving you the ability to perform tests on different services, including databases, IoT, and mobile, this Metasploit book will help you get to grips with real-world, sophisticated scenarios where performing penetration tests is a challenge. You'll then learn a variety of methods and techniques to evade security controls deployed at a target's endpoint. As you advance, you’ll script automated attacks using CORTANA and Armitage to aid penetration testing by developing virtual bots and discover how you can add custom functionalities in Armitage. Following real-world case studies, this book will take you on a journey through client-side attacks using Metasploit and various scripts built on the Metasploit 5.0 framework. By the end of the book, you’ll have developed the skills you need to work confidently with efficient exploitation techniques
Table of Contents (17 chapters)
1
Section 1 – Preparation and Development
6
Section 2 – The Attack Phase
10
Section 3 – Post-Exploitation and Evasion

Importing a web-based RCE exploit into Metasploit

In this section, we will look at how we can import web application exploits into Metasploit. Our entire focus throughout this chapter will be to grasp essential functions equivalent to those used in different programming languages. In this example, we will look at the PHP Utility Belt Remote Code Execution (RCE) vulnerability disclosed on December 8, 2015. The vulnerable application can be downloaded from https://www.exploit-db.com/apps/222c6e2ed4c86f0646016e43d1947a1f-php-utility-belt-master.zip.

The RCE vulnerability lies in the code parameter of a POST request, which, when manipulated using specially crafted data, can lead to the execution of server-side code. Let's see how we can exploit this vulnerability manually as follows:

Figure 4.6 – Manual exploitation of PHP Utility Belt

The command we used in the preceding screenshot is fwrite, which writes data to a file. We used fwrite to open...