Fundamentals of Building a Remote Access Tool (RAT1) in C#

Learn basic C# programming, networking and client-server technology by writing a Remote Access Trojan from scratch

4.64 (44 reviews)
Udemy
platform
English
language
Network & Security
category
instructor
488
students
4.5 hours
content
Nov 2021
last update
$49.99
regular price

What you will learn

Networking Essentials

Socket Programming

Running Multiple Commands

Handling Client-Server Disconnections

Multitasking

Using Threads to run commands concurrently

Two-way full-duplex Client-Server communication

Remote command execution methods

Creating a GUI based client control center

Creating a Portbinding shell

Reverse connection shell

Firewall penetration

Creating invisible and hidden trojans

Executing commands in a Reverse Connection System

Command and Control Methods

Passing data between threads

and more . . .

Description

If you want to build a RAT from scratch and understand every bit of code, instead of modifying some complex RAT that you find on the Internet without knowing how things work, then this is the course for you.

Remote Access Tools also known as RATs are used to remotely control another PC over the Internet or the Local Area Network. This course shows you in an easy and simple step-by-step approach to start writing such a tool from scratch. RATs are used in network management, remote surveillance, system administration, classroom teaching systems, and so on. It is also commonly misused as a malware known as Remote Access Trojans.  This course is about C# programming and networking but learning it in a fun exciting way by building a Remote Access Tool.

Even though there are existing open source RATs on the Internet. They are quite complex and the authors do not explain from beginning how they work. This course is created to fill that gap. It assumes you have zero knowledge of networking and coding and is suitable for absolute beginners. The emphasis of this course is to teach the fundamentals of networking, client-server communication, multi-tasking, control and management of server processes, command creation and handling and so on. This will enable you to better understand more complex client-server or RAT projects out there. We focus on the basic building-blocks of any RAT and client-server technology.

You will learn first-hand from a Malware Developers’ perspective what it is like to write a remote access tool from scratch.

This course is based on the classic RATs development  book entitled How to Write Your Own Remote Access Tools in C#,  which is authored by me in 2007 and published in Amazon in 2011. All source code are taken from that book and updated to make them current in 2021.

Features:

  1. Build programs that simulate Windows Remote Access Trojans from scratch.

  2. Learn C# and networking.

  3. The best way to understand how Remote Access Trojans work is to write one.


Everything is highly practical.  No boring theory or lectures. More like walk-throughs which you can replicate and follow along. 

By the end of this course, you will have the basic knowledge to further your studies in RAT development by looking at existing open source RATs on the Internet. This knowledge and skills are suitable for those aspiring to be Red Teamers. Even if you have no intention of creating malware, the insider knowledge and skills you gain from this course will make you a better security professional.

Also, having practical knowledge of RAT development will give you a better understanding of how to reverse engineer malware. By the end of this course, you would have gained a solid foundation for understanding how RATs work from the inside out.


Free Tools:

  • We will use free tools provided by Microsoft Visual Studio 2019/2022 Community Edition.

  • I will also teach you how to enable the Telnet windows feature in Windows 10


Suitable for:

  • Reverse Engineering and Malware Analysis Students

  • Programmers who want to know how Malware is created

  • Students planning on entering Malware Analysis and Reverse Engineering, or Penetration Testers as a Career Path

  • Penetration Testers and Ethical Hackers


Prerequisite:

  • Windows PC

  • Basic programming knowledge is helpful but not mandatory

  • Basic networking concepts is helpful but not mandatory

Screenshots

Fundamentals of Building a Remote Access Tool (RAT1) in C# - Screenshot_01Fundamentals of Building a Remote Access Tool (RAT1) in C# - Screenshot_02Fundamentals of Building a Remote Access Tool (RAT1) in C# - Screenshot_03Fundamentals of Building a Remote Access Tool (RAT1) in C# - Screenshot_04

Content

Introduction

Introduction

Installing the tools

Installing Microsoft Visual Studio 2019
Enabling telnet in windows 10

Creating an invisible and hidden program

Creating an invisible program
Hiding your program from the task bar

Introduction to RAT (Remote Access Tool) Networking

Introduction to networking essentials
Simple RAT - part 1
Simple RAT - part 2

Multi-command RATs

Introduction to multi-command RATs
Practical on multi-command RAT - part 1
Practical on multi-command RAT - part 2

Multi-tasking threads in RAT development

Introduction to multi-tasking threads
Practical on multi-tasking threads for RAT development - part 1
Practical on multi-tasking threads for RAT development - part 2

Create a two-way communications RAT

Introduction to two-way communications
Creating a two-way communications RAT: part 1
Creating a two-way communications RAT: part 2

Build an unlimited commands RAT

Introduction to unlimited commands RAT
Practical on unlimited commands RAT - part 1
Practical on unlimited commands RAT - part 2

Portbinding Shells RAT

Introduction to portbinding shells
Practical on portbinding shell RAT - part 1
Practical on portbinding shell RAT - part 2

Reverse Connection RATs

Introduction to reverse connection shells
Reverse connection RAT: Server part
Reverse connection RAT: client part 1 (Concepts)
Reverse connection RAT: client part 2 (UI Design)
Reverse connection RAT: client part 3 (Coding)
Test running the reverse connection RAT system

Lab Project: A Reverse Connection RAT with GUI Client and Command Buttons

Introduction to Lab Project
Lab Project: The Server Part
Lab Project: The Client Part
Test Running The Lab Project

Resources For Further Study

Bonus Lecture

Reviews

Paul
February 25, 2022
I'm really enjoying the course so far. I really like the format of each section, theory->Practical->Show-n-tell. Thanks again.
Ben
January 24, 2022
I have taken some of this instructor's other courses and this one is great, too. This content ties into much of the other courses and adds an element of programming, which I appreciate because implementing things yourself helps to cement understanding.

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4373732
udemy ID
10/30/2021
course created date
11/16/2021
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