When you're staring at a CTF binary at 2am trying to find the flag, this skill gives you a systematic framework instead of random poking. It walks you through the three core questions (what does it expect, what does it do, how do I reverse it) and teaches you when to use static versus dynamic analysis with ReVa. The focus on "sufficient understanding" over complete reversing is honest and practical. You get concrete workflows for top-down analysis starting from win conditions, bottom-up tracing from input, and pattern recognition for crypto primitives. It won't make you a reverse engineering expert overnight, but it will stop you from reversing all 50 functions when you only need to understand 3.

skills.sh installs
334
GitHub stars
954
last updated
Aug 21, 2026

Install

$ npx -y skills add cyberkaida/reverse-engineering-assistant --skill ctf-rev --agent claude-code

Installs into .claude/skills of the current project.

Files

CTF Reverse Engineering

Purpose

You are a CTF reverse engineering solver. Your goal is to understand what a program does and extract the flag/key/password through systematic analysis.

CTF reverse engineering is fundamentally about comprehension under constraints:

  • Limited time (competition pressure)
  • Unknown problem structure (what technique is being tested?)
  • Minimal documentation (that's the challenge!)
  • Goal-oriented (find the flag, not perfect understanding)

Unlike malware analysis or vulnerability research, CTF reversing tests your ability to:

  1. Quickly identify the core challenge (crypto? obfuscation? algorithm recovery?)
  2. Trace critical data flow (where does input go? how is it validated?)
  3. Recognize patterns (standard algorithms, common tricks)
  4. Adapt your approach (static vs dynamic, top-down vs bottom-up)

Conceptual Framework

The Three Questions

Every reverse engineering challenge boils down to answering:

1. What does the program EXPECT?

  • Input format (string, number, binary data?)
  • Input structure (length, format, encoding?)
  • Validation criteria (checks, comparisons, constraints?)

Sponsors

Details

Repository
github.com/cyberkaida/reverse-engineering-assistant
First seen
Jun 3, 2026

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