reverse engineering doesn't have to be hard

reverse engineering doesn't have to be hard

by John Hammond

Applied Sciences & Engineering Computing & Cybersecurity URComputer securityURHComputer fraud and hacking
🎙 John Hammond 👥 2.2M 📅 October 2, 2025 ⏱ 24 min 👁 79K 📄 tutorial 🧭 2026-08-16
Available in: English (current) Français

Keywords

reverse engineeringIDA ProCTFGolangdebugging

Summary

In this tutorial, John Hammond introduces reverse engineering to beginners using a Go-based crackme challenge from the Huntress CTF 2024. He starts by explaining the importance of reverse engineering in cybersecurity and then demonstrates the process using IDA Pro, a leading disassembler and debugger. The video covers static analysis, dynamic analysis, and binary patching. For static analysis, he uses IDA’s string search and cross-references to locate the ‘access denied’ message and trace the program’s logic. He then uses the Hex-Rays decompiler to generate pseudo-code, revealing a simple XOR encryption routine. He solves the challenge by writing a Python script to decrypt the flag, using CyberChef as an alternative. For dynamic analysis, he sets breakpoints and steps through the loop to observe the flag being built in registers. Finally, he patches the binary to force it to print the flag. The video concludes with a call to action to participate in Huntress CTF 2025 and promotes IDA Pro with discount codes.

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Critical Evaluation

Value of the Information & Strength of the Argument

The video provides high practical value for beginners, offering multiple approaches to solve the same problem, which reinforces learning. The argumentation is clear and logical, with step-by-step explanations of each technique. The use of a real CTF challenge adds authenticity. The sponsor segment is clearly separated and does not undermine the educational content.

Scientific Rigor, Source Quality, Title Accuracy

The scientific rigor is adequate for a tutorial: the techniques are standard and correctly demonstrated. The sources are primarily the tools used (IDA Pro) and the CTF challenge itself, with links provided in the description. The title accurately reflects the content. The video is sponsored by Hex-Rays, which is disclosed, but the educational value remains high.

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Title / Content Match

The title accurately reflects the content, as the video demystifies reverse engineering through a beginner-friendly walkthrough.

Quality & Reliability

8/10

The video is a practical tutorial by an experienced cybersecurity educator, demonstrating multiple reverse engineering techniques on a real CTF challenge. The methods are standard and reproducible, and the content is accurate. However, the video is sponsored by Hex-Rays, which introduces a potential bias towards promoting IDA Pro, though the techniques shown are tool-agnostic.

Key Moments

Markers derived by PSI from the transcript: the creator did not define chapters.

Cited Sources

Concurring Sources

  • Ghidra — Alternative tool for reverse engineering, often used for similar purposes.
  • CyberChef — Tool used in the video for XOR decryption.

Contribution & Novelties

The video provides a beginner-friendly, multi-method approach to reverse engineering, demonstrating static analysis, dynamic analysis, and binary patching on a real CTF challenge. It demystifies the process and shows that reverse engineering is accessible with the right tools.

Pour aller plus loin :

  • Ghidra — A free and open-source reverse engineering tool, often compared to IDA Pro.
  • CyberChef — A web-based tool for data transformation, useful for XOR and other operations.
  • Huntress CTF — The CTF competition where the challenge originated, offering more challenges.
  • Golang reverse engineering — Understanding Go binaries can aid in reverse engineering Go programs.

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Radar Profile

The radar profile shows high scores in information quantity, quality, and reliability, with a slightly lower technical level, reflecting the beginner-friendly nature of the tutorial. The overall balance indicates a solid educational resource.

Reliability 8/10

💬 Positif. Sur les 30 commentaires analysés, la majorité exprime de l'appréciation pour la clarté et l'utilité du tutoriel, bien que certains critiquent la présence de la sponsorisation et le coût d'IDA Pro.