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Mastering Metasploit
Mastering Metasploit

Mastering Metasploit: Discover the next level of network defense with the Metasploit framework , Second Edition

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Mastering Metasploit

Chapter 2. Reinventing Metasploit

"One of the greatest challenges in life is being yourself in a world that's trying to make you like everyone else" - Anonymous

After recalling the basics of Metasploit, we can now move further into the basic coding part of Metasploit. We will start with the basics of Ruby programming and understand the various syntaxes and semantics of it. This chapter will make it easy for you to write Metasploit modules. In this chapter, we will see how we can design and fabricate various custom Metasploit modules. We will also see how we can create custom post-exploitation modules, which will help us gain better control of the exploited machine.

Consider a scenario where the systems under the scope of the penetration test are very large in number, and we need to perform a post-exploitation function such as downloading a particular file from all the systems after exploiting them. Downloading a particular file from each system manually is time...

Ruby – the heart of Metasploit

Ruby is indeed the heart of the Metasploit framework. However, what exactly is Ruby? According to the official website, Ruby is a simple and powerful programming language. Yokihiru Matsumoto designed it in 1995. It is further defined as a dynamic, reflective, and general-purpose object-oriented programming (OOP) language with functions similar to Perl.

Tip

You can download Ruby for Windows/Linux from http://rubyinstaller.org/downloads/

You can refer to an excellent resource for learning Ruby practically at http://tryruby.org/levels/1/challenges/0

Creating your first Ruby program

Ruby is an easy-to-learn programming language. Now, let's start with the basics of Ruby. Remember that Ruby is a vast programming language. Covering all the capabilities of Ruby will push us beyond the scope of this book. Therefore, we will only stick to the essentials that are required in designing Metasploit modules.

Interacting with the Ruby shell

Ruby offers an interactive...

Developing custom modules

Let us dig deep into the process of writing a module. Metasploit has various modules such as payloads, encoders, exploits, NOP generators, and auxiliaries. In this section, we will cover the essentials of developing a module; then, we will look at how we can actually create our own custom modules.

In this section, we will discuss development for auxiliary and post-exploitation modules. Additionally, we will cover core exploit modules in the next chapter. Coming back to this chapter, let us discuss the essentials of module building in detail.

Building a module in a nutshell

Let us understand how things are arranged in the Metasploit framework, as well as all the components of Metasploit and what they do.

The architecture of the Metasploit framework

Metasploit comprises various components such as important libraries, modules, plugins, and tools. A diagrammatic view of the structure of Metasploit is as follows:

The architecture of the Metasploit framework

Let's see what these components are and how they work...

Breakthrough meterpreter scripting

The meterpreter shell is the most desired type of access an attacker will like to have on the target. Meterpreter gives the attacker a large set of tools to perform a variety of tasks on the compromised system. Meterpreter has many built-in scripts, which makes it easier for an attacker to attack the system. These scripts perform simple and tedious tasks on the compromised system. In this section, we will look at those scripts, what they are made of, and how we can leverage them in meterpreter.

Essentials of meterpreter scripting

As far as we have seen, we have used meterpreter in situations where we needed to perform some additional tasks on the system. However, now we will look at some of the advanced situations that may arise during a penetration test, where the scripts already present in...

Working with RailGun

RailGun sounds like a gun set on rails; however, this is not the case. It is much more powerful than that. RailGun allows you to make calls to a Windows API without the need to compile your own DLL.

It supports numerous Windows DLL files and eases the way for us to perform system-level tasks on the victim machine. Let's see how we can perform various tasks using RailGun and conduct some advanced post-exploitation with it.

Interactive Ruby shell basics

RailGun requires the irb shell to be loaded into meterpreter. Let's look at how we can jump to the irb shell from meterpreter:

Interactive Ruby shell basics

We can see in the preceding screenshot that simply typing in irb from meterpreter drops us into the Ruby-interactive shell. We can perform a variety of tasks with the Ruby shell from here.

Understanding RailGun and its scripting

RailGun gives us immense power to perform tasks that Metasploit may not perform. We can raise exceptions to any DLL file from the breached system and create some...

Ruby – the heart of Metasploit


Ruby is indeed the heart of the Metasploit framework. However, what exactly is Ruby? According to the official website, Ruby is a simple and powerful programming language. Yokihiru Matsumoto designed it in 1995. It is further defined as a dynamic, reflective, and general-purpose object-oriented programming (OOP) language with functions similar to Perl.

Tip

You can download Ruby for Windows/Linux from http://rubyinstaller.org/downloads/

You can refer to an excellent resource for learning Ruby practically at http://tryruby.org/levels/1/challenges/0

Creating your first Ruby program

Ruby is an easy-to-learn programming language. Now, let's start with the basics of Ruby. Remember that Ruby is a vast programming language. Covering all the capabilities of Ruby will push us beyond the scope of this book. Therefore, we will only stick to the essentials that are required in designing Metasploit modules.

Interacting with the Ruby shell

Ruby offers an interactive shell too....

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Key benefits

  • Gain the skills to carry out penetration testing in complex and highly-secured environments
  • Become a master using the Metasploit framework, develop exploits, and generate modules for a variety of real-world scenarios
  • Get this completely updated edition with new useful methods and techniques to make your network robust and resilient

Description

Metasploit is a popular penetration testing framework that has one of the largest exploit databases around. This book will show you exactly how to prepare yourself against the attacks you will face every day by simulating real-world possibilities. We start by reminding you about the basic functionalities of Metasploit and its use in the most traditional ways. You’ll get to know about the basics of programming Metasploit modules as a refresher, and then dive into carrying out exploitation as well building and porting exploits of various kinds in Metasploit. In the next section, you’ll develop the ability to perform testing on various services such as SCADA, databases, IoT, mobile, tablets, and many more services. After this training, we jump into real-world sophisticated scenarios where performing penetration tests are a challenge. With real-life case studies, we take you on a journey through client-side attacks using Metasploit and various scripts built on the Metasploit framework. By the end of the book, you will be trained specifically on time-saving techniques using Metasploit.

Who is this book for?

This book is a hands-on guide to penetration testing using Metasploit and covers its complete development. It shows a number of techniques and methodologies that will help you master the Metasploit framework and explore approaches to carrying out advanced penetration testing in highly secured environments.

What you will learn

  • Develop advanced and sophisticated auxiliary modules
  • Port exploits from PERL, Python, and many more programming languages
  • Test services such as databases, SCADA, and many more
  • Attack the client side with highly advanced techniques
  • Test mobile and tablet devices with Metasploit
  • Perform social engineering with Metasploit
  • Simulate attacks on web servers and systems with Armitage GUI
  • Script attacks in Armitage using CORTANA scripting
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Publication date, Length, Edition, Language, ISBN-13
Publication date : Sep 30, 2016
Length: 440 pages
Edition : 2nd
Language : English
ISBN-13 : 9781786463166
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Publication date : Sep 30, 2016
Length: 440 pages
Edition : 2nd
Language : English
ISBN-13 : 9781786463166
Vendor :
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Category :
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Table of Contents

10 Chapters
1. Approaching a Penetration Test Using Metasploit Chevron down icon Chevron up icon
2. Reinventing Metasploit Chevron down icon Chevron up icon
3. The Exploit Formulation Process Chevron down icon Chevron up icon
4. Porting Exploits Chevron down icon Chevron up icon
5. Testing Services with Metasploit Chevron down icon Chevron up icon
6. Virtual Test Grounds and Staging Chevron down icon Chevron up icon
7. Client-side Exploitation Chevron down icon Chevron up icon
8. Metasploit Extended Chevron down icon Chevron up icon
9. Speeding up Penetration Testing Chevron down icon Chevron up icon
10. Visualizing with Armitage Chevron down icon Chevron up icon

Customer reviews

Rating distribution
Full star icon Full star icon Full star icon Half star icon Empty star icon 3.2
(5 Ratings)
5 star 40%
4 star 20%
3 star 0%
2 star 0%
1 star 40%
Amazon Customer Nov 27, 2016
Full star icon Full star icon Full star icon Full star icon Full star icon 5
I loved it very much really , the delivery of this book to my house was late , but waiting was worth it. Deeply explained perfectly about metasploit . i should recommend everyone to buy this awesome book.
Amazon Verified review Amazon
ilm'illimi Jul 05, 2017
Full star icon Full star icon Full star icon Full star icon Full star icon 5
I love this book. Very useful for me.
Amazon Verified review Amazon
Jerome D Mar 11, 2018
Full star icon Full star icon Full star icon Full star icon Empty star icon 4
Great book to start working on metasploit exploit development. You will not become a master of metasploit internals, however it is a good start for basic exploit dev skills.
Amazon Verified review Amazon
Stephen H Jun 25, 2017
Full star icon Empty star icon Empty star icon Empty star icon Empty star icon 1
The book tries to make you follow a tutorial through the book. But majority of the commands are not correct and you can clearly see the screen shots are from different computers. Maybe these mistakes will be removed in the third edition but I sent this book back and got another one.
Amazon Verified review Amazon
Amazon Customer Nov 30, 2016
Full star icon Empty star icon Empty star icon Empty star icon Empty star icon 1
Book is nothing special except bombastic headline. Have no idea how this author even got opportunity to write second edition. Price is also not worth the material presented.
Amazon Verified review Amazon
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