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Assembly Language Programming for Reverse Engineering (Udemy.com)

Understand assembly code and modify exe files to add new functionality using x64dbg

Created by: Paul Chin, PhD

Last updated September 2026

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What you will learn

  • Assembly Language Basics
  • Reverse Engineering
  • xdbg debugging basics
  • Modifying programs
  • Injecting code into exe files
  • Hollowing out an exe file
  • CPU registers
  • Basic Addition
  • INC, DEC, MUL and DIV instructions
  • Accessing main memory (RAM)
  • The Stack
  • Function Calls
  • Input and Output Functions
  • Code Caves
  • Functions that returns a value
  • The Flags Register
  • Jumps
  • Compare Instructions
  • Structured Programming
  • Signed Operations
  • and more . . .

How it compares

Against the other 523 rated Udemy courses in Hacking on CourseDuck:

  • Rating4.8 out of 5higher than 95% of them
  • Reviews591#254 of 524 by number of reviews
  • Length15.1 hourslonger than 83% of them
  • Last updatedSeptember 2026more recently than 92% of them

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Course Description

If you have been using debuggers to reverse engineer programs but wished you had more understanding of Assembly Language, then this course is for you. We will cover enough assembly language to allow you to understand how to modify exe files to insert your own code or, to modify existing exe files to do things which it was not intended to do.

Traditionally, assembly language programming is taught using an assemblers like NASM or FASM. But learning it that way will not give you the skills to understand reverse engineered programs. There is a missing link (knowledge gap) of how to apply your assembly knowledge to modify programs. This course fills that knowledge gap.

Instead of using an assembler, we will directly use the x64dbg debugger to learn assembly language. That is right, we will write our own assembly code inside the x64dbg debugger itself.  You will learn Assembly Language from the ground up with zero knowledge as a complete beginner.

We will use techniques that allow you to:


  1. modify existing code

  2. overwrite existing code

  3. modify memory segments to insert data

  4. create new functions

  5. exploit code caves

  6. add new functionality to existing programs

  7. and more...


This black art is not widely taught and there are no existing courses elsewhere that puts together coherently all the knowledge of assembly and reverse engineering. Mostly what you will find are separate courses on Assembly and Reverse Engineering. Many courses on Reverse Engineering don't cover the background assembly language from a software hacker's perspective. And almost all Assembly Language courses teach you how to write programs from scratch, instead of how to modify existing programs to add new functionality with your own code using a debugger like x64dbg.


The knowledge you gain will be your added advantage either as a security researcher, or, malware analyst, or student of software security. It will also benefit programmers who want to know how programs run internally and how to extend program functionality if you do not have the source code.


Go ahead and enroll now and I will see you inside!

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Instructor Details

Paul Chin, PhD

I am a semi-retired college lecturer with a PhD in Computer Science and over 30 years of experience in teaching computing and information technology. My passion for knowledge spans various fields, including reverse engineering, coding, music, health, spirituality, and well-being. In my free time, I enjoy playing the piano, which adds a creative balance to my technical pursuits. Whether teaching face-to-face or online, I find fulfillment in inspiring students to succeed and achieve their dreams through practical skills and personal growth.

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Reviews

4.8

591 ratings on Udemy

Select a bar to show only those reviews.Select the bar again to show every rating.

By Jorge Fernández Toyas on 9/11/2026

Buena, pero con objeciones, nada mas empezar te topas con que el código en C le falta una librería (#include ) pero a el le funciona. La contraseña para los apuntes del archivo 0-1hello.exe.zip no se facilita. Errores que se localizan y o se pueden copiar en apuntes propios.

By Fabio T. on 1/10/2026

Excellent course for learning solid 32-bit assembly fundamentals. The instructor explains everything very well. Personally, I was most intrigued by the "reverse engineering" section because I didn't know how to modify an .exe file, so my favorite part was the first one, but the rest was excellent, too. I'm ready to start the x64 course as part 2 of this one.

By Neeraj Rawat on 9/2/2025

It is a great course. If you are familiar with assembly then a bonus else you can learn a lot wrt x32dbg. It covers almost all the topics to learn x86 assembly and Paul explains everything in detail with each step. He ensures that all the concepts are well explained along with practicals, which indeed help you in learning the debugger as well. Both are essential in your Reverse Engineering journey or Malware Analysis. He also provided the PPTs and notes for each section and very active in answering the queries too. Don't forget to learn x64 as well along with other great courses by Paul.

By Adam Markovich on 3/31/2025

This course is absolutely great! I'm currently studying embedded engineering and found the hacker's approach to learning assembly language programming using xdbg enlightening. I feel like this course is a great way to get a grasp of how computer memory works with the interactive environment xdbg provides. Paul has a deep understanding of the subject matter and presents the material very clearly. I look forward to completing more of his courses. Thank you kindly Paul!

By Joel er on 1/6/2025

I enjoyed Paul's clear explanation and examples, which made it easy to understand the concepts. I would recommend following his practical exercises. Although the exercises are not demanding, they are good revisions to earlier concepts taught; the author has carefully structured the exercises to incorporate previous lessons taught. Looking forward to his other courses.

By Alexander Voltaire on 4/23/2024

This is course is great for beginners and for those with some assembly experience but would like to sure up some knowledge gaps. The course builds in a way that is concise without getting to bogged down in esoteric details. There's just enough theory for you to understand the concepts and terminology without intimidating the student. Course does an excellent job of building confidence with all of the practical exercises that build in difficulty through the course. Paul Chin teaches in a way that I wished more instructors would. Direct straight-forward and to the point. The lessons are perfectly sized to introduce a new concept, see it put into practice and for the student to do the same. Best money I have spent to date learning x86 Assembly. I have already purchased the x64 Assembly course and signed up for the courses on CrackingLessons.com Thank you Paul!

By Asier Gonzalez Blanco on 12/18/2023

This course has been groundbreaking for me! I came to this course expecting nothing, just maybe learning how x86 assembly works. What I had instead is a very comprehensive and detail course about assembly, where you can MANIPULATE ANY program in whatever way you want. I have gain confidence to understand how programs execute behind the hoods and how to analyze them from a debugging point of view where there is no high level source code. If there is something that I miss, it may be to explain a little about x64 assembly. Nonetheless, I understand that most programs are written for 32 bits, which is the reason as to why the course focus on it. This course is for anyone who interested in low level programming, and want to know how all is created under the hood. I will say someone who has completed a programming course (preferably C) is the minimum expected to take this course.

By Jonathan Sparrow on 11/30/2023

I thoroughly enjoyed this course. It provided an accessible approach to a subject that I have long wanted to study, but previously found challenging to know how to get started. I was very impressed by the comprehensive coverage provided by the tutor and the thoughtful approach in considering the questions that I as a student may have. Thank you very much Mr Chin.

By Lohitha Chandrashekara on 11/28/2023

Really liked the unique teaching style that involved modifying existing files, which made learning both enjoyable and straightforward compared to the traditional method of solely writing programs. Assembly language seemed daunting before this course of yours. thank you. But one feedback could have collated all the ppt into one pdf, so we could use it to revise.

By Swaraj Rai on 8/16/2023

One of the best course out there for learning Assembly code if you're interested in learning reverse engineering. The instructor gives a clear and concise explanation for every code written by him and the definitions are simple and understandable for even absolute beginners. Highly Recommended. Moreover, please do include exercises for us at the end of the course, so we can practice ourselves and be familiar with the flow of the code explained.

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Overall Score : 96 / 100