Reverse Engineering 2: Windows GUI Programs from Udemy

What's inside

Learning objectives

Disassemble windows programs
Reversing jumps
Patching
Debugging windows programs
Solving crackme's
Nop instructions
Modifying eax register values

Setting hardware breakpoints
Memory patching
Intermodular call method
Call stack method
Understand how trial period works
Understand how software registration process works
Remove nag screens

Disassemble windows programs
Reversing jumps
Patching
Debugging windows programs
Solving crackme's
Nop instructions
Modifying eax register values
Setting hardware breakpoints
Memory patching
Intermodular call method
Call stack method
Understand how trial period works
Understand how software registration process works
Remove nag screens

Syllabus

Introduction

Introduction to windows gui programs

Setting up x64dbg

Setting breakpoints on strings

Windows API functions

Pushing parameters to the stack

Bypassing messages

Bypassing using xor assembly

Breakpoints on Intermodular Calls

Breakpoints from Call Stack

Registration file checks

Analyzing crackme 2

Registration checks

Software registration

Removing Nag screens

Analyzing crackme 3

Removing Nag screen 1

Removing Nag screen 2

Setting Registration Status

Trial Periods

Analyzing Trial Periods

Autogenerated serial keys

Autogenerated serial keys 2

Practical Exercise - TDC - part 2

Patching EAX register values

Patching EAX register values - part 2

Hardware Breakpoints

Hardware Breakpoints - part 2

Memory Patching

xAnalyzer

Configuring xAnalyzer

Intro to Serial Phishing

Analyzing the CreateFile API function

Bonus Lecture

Traffic lights

Read about what's good

what should give you pause

and possible dealbreakers

Builds upon the foundational knowledge from the first course, offering a progressive learning path in reverse engineering techniques

Focuses on practical application through crackme exercises, providing hands-on experience in reverse engineering GUI programs

Covers techniques for bypassing software protections, such as nag screens and trial periods, which is valuable for understanding software licensing mechanisms

Employs x64dbg, a popular debugger, which is essential for dynamic analysis and reverse engineering on Windows platforms

Requires prior knowledge from 'Reverse Engineering 1', which may limit accessibility for newcomers without the recommended background

Teaches patching techniques, which, if misused, could be applied for illegal activities such as software piracy or distribution of malware

Reviews summary

Windows gui reverse engineering skills

According to learners, this course is a largely positive follow-up to the first in the series, focusing specifically on reverse engineering Windows GUI applications. Students particularly praise the hands-on approach using practical crackme exercises that help solidify understanding of concepts like patching, debugging with x64dbg, and analyzing Windows API calls. Many appreciate the instructor's clear explanations and deep knowledge, finding the content highly relevant for analyzing real-world software features like trial periods and software registration. Some reviewers note that while it builds on the first course, a solid foundational knowledge of assembly and reverse engineering is beneficial for navigating the challenging practicals.

Benefits from prior RE/Assembly knowledge.

"While this is the second course, having a strong background in the first course material or equivalent RE experience is highly recommended."

"Some parts moved a bit fast, and I felt having prior assembly language knowledge was a big advantage."

"This course is definitely not for absolute beginners; make sure you are comfortable with basic RE concepts and tools before starting."

"I had taken the first course, but still found some sections quite challenging, highlighting the need for a solid foundation."

Covers highly relevant techniques and topics.

"Learning about analyzing software registration, trial periods, and patching GUI programs is incredibly useful."

"The techniques taught for bypassing checks and modifying program behavior are directly applicable."

"Understanding how to use x64dbg effectively on GUI applications is a crucial skill this course delivers."

"The focus on Windows-specific techniques is exactly what I was looking for."

Instructor provides clear explanations and expertise.

"The instructor clearly knows his stuff and explains complex topics in a way that is relatively easy to grasp."

"I found the instructor's demonstrations using x64dbg to be very clear and easy to follow."

"His explanations of Windows API calls and their relevance were particularly helpful."

"The instructor's method of breaking down the crackmes step-by-step is excellent."

Crackme exercises are highly valuable for learning.

"The practical exercises (crackmes) are where the real learning happens; they are well-designed and challenging."

"I really appreciate the hands-on labs; they make the concepts stick much better than just theory."

"Solving the crackmes was the most rewarding part and helped reinforce the techniques taught."

"The practical exercises provide essential real-world application of the learned skills."

Can be challenging, especially the exercises.

"The crackmes can be quite difficult at times, requiring significant effort and independent problem-solving."

"Some concepts were hard to grasp initially and required rewatching lectures."

"I found the pace a bit fast in certain modules, making it challenging to keep up."

"This course definitely pushes you, which is good, but expect to spend extra time on the exercises."

Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in Reverse Engineering 2: Windows GUI Programs with these activities:

Review Assembly Language Fundamentals

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Solidify your understanding of assembly language concepts before diving into reverse engineering GUI programs. A strong foundation in assembly is crucial for interpreting disassembled code and understanding program behavior.

Browse courses on Assembly Language

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Review basic assembly instructions (MOV, ADD, SUB, JMP, etc.).
Practice reading and interpreting simple assembly code snippets.
Understand the role of registers and memory in assembly programming.

Read 'Practical Reverse Engineering'

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Deepen your understanding of reverse engineering principles and techniques. This book provides practical examples and insights that complement the course material.

View Practical Reverse Engineering on Amazon

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Read the chapters related to x86/x64 architecture and Windows reversing.
Experiment with the reversing tools discussed in the book.
Try to apply the techniques learned to the crackme's provided in the course.

Create a Cheat Sheet for x64dbg

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Improve your efficiency with x64dbg by creating a cheat sheet of commonly used commands and techniques. This will help you quickly access the information you need during reverse engineering sessions.

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Compile a list of frequently used x64dbg commands (e.g., breakpoints, stepping, memory inspection).
Organize the commands into categories for easy reference.
Add brief descriptions and examples for each command.
Keep the cheat sheet updated as you learn new techniques.

Four other activities

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Read 'Reversing: Secrets of Reverse Engineering'

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Expand your knowledge of reverse engineering with this comprehensive guide. It covers a wide range of topics and provides valuable insights into advanced techniques.

View Reversing: Secrets of Reverse Engineering on Amazon

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Focus on chapters related to Windows internals and executable formats.
Explore the advanced debugging techniques discussed in the book.
Try to apply the concepts learned to more complex CrackMe challenges.

Solve CrackMe Challenges

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Reinforce your reverse engineering skills by tackling various CrackMe challenges. This hands-on practice will help you apply the concepts learned in the course and improve your problem-solving abilities.

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Download CrackMe challenges from online resources (e.g., Crackmes.one).
Use x64dbg to analyze the CrackMe and identify the key logic.
Attempt to bypass the protection mechanisms and crack the program.
Document your approach and the techniques used.

Write a Blog Post on a Reverse Engineering Technique

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Solidify your understanding of a specific reverse engineering technique by explaining it in a blog post. This will force you to organize your thoughts and communicate the concept clearly.

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Choose a reverse engineering technique covered in the course (e.g., patching, hardware breakpoints).
Research the technique thoroughly and gather relevant information.
Write a clear and concise blog post explaining the technique, including examples and code snippets.
Publish your blog post on a platform like Medium or your own website.

Reverse Engineer a Simple Open-Source GUI Program

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Apply your reverse engineering skills to a real-world program. This project will provide valuable experience in analyzing and understanding complex codebases.

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Select a simple open-source GUI program written in C++ or C#.
Use x64dbg to analyze the program's behavior and identify key functionalities.
Document your findings and create a report outlining the program's architecture and functionality.
Attempt to modify the program's behavior by patching the executable.

Career center

Learners who complete Reverse Engineering 2: Windows GUI Programs will develop knowledge and skills that may be useful to these careers:

Reverse Engineer

A Reverse Engineer explores the inner workings of software and hardware systems. They analyze code, often without access to the original source, to understand its functionality and identify vulnerabilities. This course on reverse engineering Windows graphical user interface programs directly helps you build the skills required for this role. The ability to disassemble programs into assembly code, perform dynamic analysis, set breakpoints, and modify program behavior are essential skills for a Reverse Engineer. Additionally, understanding software registration processes and trial periods, as covered in the course, is crucial for analyzing software licensing schemes and potential vulnerabilities.

See salaries and explore the career path for Reverse Engineer

Malware Analyst

A Malware Analyst identifies, examines, and dissects malicious software to understand its behavior, origin, and potential impact. This role requires a deep understanding of reverse engineering techniques to deconstruct malware and develop effective countermeasures. This course helps a prospective Malware Analyst to understand how to disassemble programs, perform memory patching, set breakpoints, and step through code. Furthermore, the course teaches how to bypass messages and debug programs to understand their functionality. This knowledge is directly applicable to analyzing and mitigating the threats posed by malicious software.

See salaries and explore the career path for Malware Analyst

Security Researcher

A Security Researcher investigates software and systems to uncover vulnerabilities and develop security solutions. This often involves reverse engineering to understand how systems work to identify potential weaknesses. This course provides the foundations for a Security Researcher wishing to understand reverse engineering in a Windows environment. Specifically, the course's coverage of disassembling programs, dynamic analysis, setting breakpoints, patching, and understanding software registration processes provides essential skills for identifying and exploiting vulnerabilities in Windows GUI programs. This course helps build a foundation for analyzing software security.

See salaries and explore the career path for Security Researcher

Vulnerability Analyst

A Vulnerability Analyst identifies and assesses weaknesses in software and hardware systems. This role requires expertise in reverse engineering to understand how vulnerabilities can be exploited. This course helps a Vulnerability Analyst to develop skills in disassembling programs into assembly code and dynamic analysis. The course's coverage of patching programs, modifying program behavior, and understanding software registration processes may also be helpful in identifying and evaluating vulnerabilities. A Vulnerability Analyst can use this course to become familiar with reverse engineering on the Windows platform.

See salaries and explore the career path for Vulnerability Analyst

Cyber Security Analyst

Cyber Security Analysts monitor networks and systems for security breaches and investigate security incidents. Reverse engineering skills can be valuable for analyzing malware and understanding attack vectors. This course may be useful for learning how to reverse engineer Windows GUI programs, which can enhance your ability to analyze malware and understand how attackers exploit vulnerabilities. The ability to disassemble programs, perform dynamic analysis, and identify vulnerabilities can greatly improve your effectiveness in detecting and responding to cyber threats. This role may require a master's degree.

See salaries and explore the career path for Cyber Security Analyst

Exploit Developer

An Exploit Developer creates code that takes advantage of software vulnerabilities to gain unauthorized access or control of a system. This role demands a strong understanding of reverse engineering to identify and leverage vulnerabilities. This course's focus on reverse engineering Windows GUI programs helps an Exploit Developer to gain expertise in this crucial area. The course covers disassembling programs, dynamic analysis, setting breakpoints, patching, and modifying program behavior, all of which are essential skills for identifying and exploiting vulnerabilities. Understanding software registration processes and trial periods, as covered in the course, is also important for developing exploits that bypass security measures.

See salaries and explore the career path for Exploit Developer

Penetration Tester

A Penetration Tester, also known as an ethical hacker, attempts to find and exploit vulnerabilities in computer systems, networks, or applications. This course helps a Penetration Tester understand reverse engineering techniques, which are essential for identifying and exploiting vulnerabilities in software. The course's focus on disassembling programs, dynamic analysis, setting breakpoints, patching, and understanding software registration processes gives one the skills needed to analyze and bypass security measures. This knowledge is directly applicable to penetration testing Windows applications and systems.

See salaries and explore the career path for Penetration Tester

Software Developer

A Software Developer designs, codes, and tests software applications. While not always directly involved in reverse engineering, understanding reverse engineering concepts can help a Software Developer write more secure code and troubleshoot complex issues. This course may be helpful for a Software Developer to understand how software works at a lower level. Learning how to disassemble programs, set breakpoints, and step through code can improve developers' debugging skills and their ability to analyze third-party libraries or legacy code. This knowledge can also help in understanding how reverse engineers might try to attack or understand their code, leading to more secure software development practices.

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Software Engineer

Software Engineers apply engineering principles to the design, development, maintenance, testing, and evaluation of software. While direct reverse engineering may not be a daily task, understanding how software can be analyzed and potentially exploited is valuable for building robust and secure applications. This course may provide a Software Engineer with insight into reverse engineering techniques applied to Windows GUI programs. Skills such as disassembling programs, dynamic analysis, setting breakpoints, and patching can improve debugging skills and the ability to analyze third-party code or legacy systems. This knowledge can also inform better security practices during the development lifecycle.

See salaries and explore the career path for Software Engineer

Application Security Engineer

An Application Security Engineer focuses on securing software applications throughout the development lifecycle. They identify vulnerabilities, perform security testing, and implement security best practices. This course may be useful for an Application Security Engineer as it provides a hands-on introduction to reverse engineering Windows GUI programs. Learning how to disassemble programs, perform dynamic analysis, and identify vulnerabilities can greatly enhance their ability to assess and improve the security of applications. The knowledge gained from this course can be applied to penetration testing, code review, and threat modeling activities.

See salaries and explore the career path for Application Security Engineer

Security Consultant

Security Consultants advise organizations on how to improve their security posture. They assess risks, recommend security solutions, and conduct security audits. A Security Consultant with knowledge of reverse engineering can provide valuable insights into potential vulnerabilities and attack vectors. This course may be useful to learn about reverse engineering techniques used on Windows GUI programs, such as disassembling programs, dynamic analysis, and patching. This knowledge can help a Security Consultant to perform more thorough security assessments and provide more effective recommendations to clients.

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Software Quality Assurance Tester

A Software Quality Assurance Tester ensures that software meets quality standards and functions as intended. While not directly involved in reverse engineering, understanding how software works at a low level can be helpful for identifying and diagnosing complex bugs. This course may be useful for learning about debugging techniques and how to analyze program behavior. The ability to set breakpoints, step through code, and understand assembly code can enhance one's ability to identify and report defects in software.

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Firmware Engineer

A Firmware Engineer develops and tests low-level software that controls hardware devices. Often, Firmware Engineers must debug and reverse engineer existing firmware to understand its functionality and identify potential issues. This course may be useful in reverse engineering Windows GUI programs, which can provide valuable skills and concepts applicable to firmware analysis. Learning how to disassemble programs, perform dynamic analysis, and patch code can enhance skills in debugging and reverse engineering firmware. For this position, an advanced degree may be required.

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Cryptographer

A Cryptographer designs and analyzes encryption algorithms and security protocols. While reverse engineering is not their primary focus, understanding how software can be analyzed and potentially attacked is valuable for developing robust cryptographic solutions. This course may be useful in understanding reverse engineering techniques, which can provide insights into potential weaknesses in software implementations of cryptographic algorithms. Learning how to disassemble programs, perform dynamic analysis, and identify vulnerabilities can help a Cryptographer design more secure systems. This role typically requires a master's degree or a doctorate.

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System Administrator

System Administrators are responsible for maintaining and managing computer systems and networks. Although they typically do not perform in-depth reverse engineering, understanding how software works at a low level can be helpful for troubleshooting and security purposes. This course may be useful for a System Administrator who wishes to understand the workings of Windows GUI applications and recognize potentially malicious behavior. The material provided may also help in identifying and mitigating security threats.

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Reverse Engineering 2

Windows GUI Programs

What's inside

Learning objectives

Syllabus

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Reviews summary

Windows gui reverse engineering skills

Activities

Career center

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