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ljagiello/ctf-reverse

Bietet Reverse-Engineering-Techniken für CTF-Herausforderungen, wenn die Hauptaufgabe darin besteht, kompilierte, obfuskierte, gepackte oder virtualisierte Ziele zu verstehen, bevor sie ausgenutzt oder gelöst werden.

Was ist ctf-reverse?

Diese Skill ist speziell für Capture The Flag (CTF)-Wettbewerbe konzipiert und unterstützt Entwickler und Sicherheitsforscher bei der Analyse von Binärdateien, APKs, WebAssembly, Firmware, benutzerdefinierten virtuellen Maschinen, Bytecode, Spiel-Clients und schadsoftwareähnlichen Loadern. Sie eignet sich besonders für Szenarien mit Anti-Debug- und Anti-Analyse-Logiken. Die Skill sollte verwendet werden, wenn das Hauptziel darin besteht, zu verstehen, wie ein kompilierter, obfuskierter, gepackter oder virtualisierter Zielmechanismus funktioniert, bevor er ausgenutzt oder gelöst wird. Sie ist nicht für reine Web-Workflows, Log- oder Forensik-Analysen oder isolierte Kryptografieprobleme gedacht, es sei denn, das Reverse Engineering der Implementierung stellt das eigentliche Hindernis dar. Wenn die Schwachstelle bereits verstanden ist und nur noch die Ausnutzung fehlt, sollte stattdessen die 'pwn'-Skill verwendet werden.

Funktioniert mit~Claude Code~Codex CLI~Cursor
npx skills add https://github.com/ljagiello/ctf-skills/tree/main/skills/ctf-reverse

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Dokumentation

Was macht ctf-reverse?

Bietet Reverse-Engineering-Techniken für CTF-Herausforderungen. Verwende dies, wenn die Hauptaufgabe darin besteht, zu verstehen, wie ein kompiliertes, obfuskiertes, gepacktes oder virtualisiertes Ziel funktioniert, bevor es ausgenutzt oder gelöst wird – einschließlich Binärdateien, APKs, WASM, Firmware, benutzerdefinierten virtuellen Maschinen, Bytecode, Spiel-Clients, schadsoftwareähnlichen Loadern sowie Anti-Debug- oder Anti-Analyse-Logiken. Verwende es nicht, wenn die Schwachstelle bereits verstanden ist und nur noch die Ausnutzung übrig bleibt; verwende stattdessen pwn. Verwende es nicht für reine Web-Workflows, Log- oder Forensik-Analysen oder isolierte Kryptografieprobleme, es sei denn, das Reverse Engineering der Implementierung ist das eigentliche Hindernis.

Individual skills in this repo

This repo contains 10 individual skills — each has its own dedicated page.

ljagiello/ctf-ai-ml

Provides AI and machine learning techniques for CTF challenges. Use when attacking ML models, crafting adversarial examples, performing model extraction, prompt injection, membership inference, training data poisoning, fine-tuning manipulation, neural network analysis, LoRA adapter exploitation, LLM jailbreaking, or solving AI-related puzzles.

ljagiello/ctf-crypto

Provides cryptography attack techniques for CTF challenges. Use when attacking encryption, hashing, signatures, ZKP, PRNG, or mathematical crypto problems involving RSA, AES, ECC, lattices, LWE, CVP, number theory, Coppersmith, Pollard, Wiener, padding oracle, GCM, key derivation, or stream/block cipher weaknesses.

ljagiello/ctf-forensics

Provides digital forensics and signal analysis techniques for CTF challenges. Use when analyzing disk images, memory dumps, event logs, network captures, cryptocurrency transactions, steganography, PDF analysis, Windows registry, Volatility, PCAP, Docker images, coredumps, side-channel power traces, DTMF audio spectrograms, packet timing analysis, CD audio disc images, or recovering deleted files and credentials.

ljagiello/ctf-malware

Provides malware analysis and network traffic techniques for CTF challenges. Use when analyzing obfuscated scripts, malicious packages, custom crypto protocols, C2 traffic, PE/.NET binaries, RC4/AES encrypted communications, YARA rules, shellcode analysis, memory forensics for malware (Volatility malfind, process injection detection), anti-analysis techniques (VM/sandbox detection, timing evasion, API hashing, process injection, environment checks), or extracting malware configurations and indicators of compromise.

ljagiello/ctf-misc

Provides miscellaneous CTF challenge techniques for problems that do not cleanly fit the main categories. Use for encoding puzzles, pyjails, bash jails, RF/SDR, DNS oddities, unicode tricks, esoteric languages, QR or audio puzzles, constraint solving, game theory, unusual sandbox escapes, and hybrid logic puzzles. Prefer a more specific skill first when the challenge is mainly web, pwn, reverse, forensics, malware, OSINT, or crypto. Treat this as the fallback skill for genuine cross-category or edge-case challenges, not the default starting point.

ljagiello/ctf-osint

Provides open source intelligence techniques for CTF challenges. Use when gathering information from public sources, social media, geolocation, DNS records, username enumeration, reverse image search, Google dorking, Wayback Machine, Tor relays, FEC filings, or identifying unknown data like hashes and coordinates.

ljagiello/ctf-pwn

Provides binary exploitation techniques for CTF challenges. Use when you already have a vulnerable native target or service and need to turn memory corruption or low-level primitives into code execution or privilege escalation, such as buffer overflows, format strings, heap bugs, ROP, ret2libc, shellcode, kernel exploitation, seccomp bypass, sandbox escape, or Windows/Linux exploit chains. Do not use it when the main blocker is understanding what the binary does; use reverse engineering first. Do not use it for pure web bugs, disk or packet forensics, or standalone crypto/math challenges.

ljagiello/ctf-web

Provides web exploitation techniques for CTF challenges. Use when the target is primarily an HTTP application, API, browser client, template engine, identity flow, or smart-contract frontend/backend surface, including XSS, SQLi, SSTI, SSRF, XXE, JWT, auth bypass, file upload, request smuggling, OAuth/OIDC, SAML, prototype pollution, and similar web bugs. Do not use it for native binary memory corruption, reverse engineering of standalone executables, disk or memory forensics, or pure cryptanalysis unless the web flaw is still the main path to the flag.

ljagiello/ctf-writeup

Generates a single standardized submission-style CTF writeup for competition handoff and organizer review. Use after solving a CTF challenge to document the solution steps, tools used, and lessons learned in a structured format.

ljagiello/solve-challenge

Solves CTF challenges by performing first-pass triage, identifying the dominant category, and routing execution to the right specialized ctf-* skill. Use when the user gives you a challenge bundle, a remote service, a suspicious file, or only a vague challenge description and you must determine where to start. Do not use it when the category is already clear and a specialized skill can be invoked directly; this is the dispatcher and recon entrypoint, not the deepest reference for category-specific techniques.

Verwandte Skills

affaan-m/uspto-database

USPTO patent and trademark data workflow for official record lookup, PatentSearch queries, TSDR checks, assignment data, and reproducible IP research logs.

community

affaan-m/scholar-evaluation

Structured scholarly-work evaluation for papers, proposals, literature reviews, methods sections, evidence quality, citation support, and research-writing feedback.

community

affaan-m/literature-review

Systematic literature-review workflow for academic, biomedical, technical, and scientific topics, including search planning, source screening, synthesis, citation checks, and evidence logging.

community

affaan-m/everything-claude-code

The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.

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forrestchang/andrej-karpathy-skills

Agent skill repository discovered by 10x-chat research.

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langgenius/backend-code-review

Review backend code for quality, security, maintainability, and best practices based on established checklist rules. Use when the user requests a review, analysis, or improvement of backend files (e.g., `.py`) under the `api/` directory. Do NOT use for frontend files (e.g., `.tsx`, `.ts`, `.js`). Supports pending-change review, code snippets review, and file-focused review.

community
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