Book Image

Metasploit Penetration Testing Cookbook - Third Edition

By : Daniel Teixeira, Abhinav Singh, Nipun Jaswal, Monika Agarwal
Book Image

Metasploit Penetration Testing Cookbook - Third Edition

By: Daniel Teixeira, Abhinav Singh, Nipun Jaswal, Monika Agarwal

Overview of this book

Metasploit is the world's leading penetration testing tool and helps security and IT professionals find, exploit, and validate vulnerabilities. Metasploit allows penetration testing automation, password auditing, web application scanning, social engineering, post exploitation, evidence collection, and reporting. Metasploit's integration with InsightVM (or Nexpose), Nessus, OpenVas, and other vulnerability scanners provides a validation solution that simplifies vulnerability prioritization and remediation reporting. Teams can collaborate in Metasploit and present their findings in consolidated reports. In this book, you will go through great recipes that will allow you to start using Metasploit effectively. With an ever increasing level of complexity, and covering everything from the fundamentals to more advanced features in Metasploit, this book is not just for beginners but also for professionals keen to master this awesome tool. You will begin by building your lab environment, setting up Metasploit, and learning how to perform intelligence gathering, threat modeling, vulnerability analysis, exploitation, and post exploitation—all inside Metasploit. You will learn how to create and customize payloads to evade anti-virus software and bypass an organization's defenses, exploit server vulnerabilities, attack client systems, compromise mobile phones, automate post exploitation, install backdoors, run keyloggers, highjack webcams, port public exploits to the framework, create your own modules, and much more.
Table of Contents (20 chapters)
Title Page
Copyright and Credits
Contributors
Packt Upsell
Preface
Index

Using MSFvenom to generate shellcode


We already read about MSFvenom and now we will use it again, but this time to generate custom shellcode that we can safely use in a PoC exploit. PoC exploits found online often use a bind shell, have hardcoded IP addresses, or simply open a calculator to prove code execution, which means that they may not fit your needs during a penetration test. For this reason, most of the time we need to replace the shellcode with our own code.

Shellcode is a small piece of code used as the payload in the exploitation of a software vulnerability. It is called shellcode because most of the time it is used to launch a shell so that the attacker can control the compromised target.

Getting ready

We will start by downloading a PoC I created a while back, which exploits a stack-based buffer overflow vulnerability in the web interface of Disk Sorter Enterprise v9.5.12, caused by improper bounds checking of the request path in HTTP GET requests sent to the built-in web server...