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Agent skills for solving CTF challenges - web exploitation, binary pwn, crypto, reverse engineering, forensics, OSINT, and more

Skills2.4k stars288 forksPythonMITUpdated 1mo ago
Editor's note

This repository provides a collection of Agent Skills designed to assist AI agents in solving Capture the Flag security competition challenges across seven categories: web exploitation, binary pwn, cryptography, reverse engineering, forensics, OSINT, and AI/ML. Each skill ships as a structured `SKILL.md` file consumable by any Agent Skills spec-compatible tool, with explicit Claude Code support via `npx skills add ljagiello/ctf-skills`. A central shell installer (`scripts/install_ctf_tools.sh`) handles dependency management for Python packages, apt, Homebrew, Go, and Ruby gems, with `--dry-run` and `--verify` flags for pre-competition setup. The web exploitation skill alone covers over 80 distinct techniques including SQL injection variants, JWT attacks, PHP deserialization, Solidity reentrancy, and named CVEs such as CVE-2025-55182 and CVE-2024-45409. The primary audience is security researchers and CTF competitors who want an AI agent to handle reconnaissance, exploitation, and tooling setup automatically rather than running commands manually.

ClaudeWave Trust Score
90/100
Verified
Passed
  • Open-source license (MIT)
  • Recently active
  • Healthy fork ratio
  • Clear description
  • Topics declared
  • Documented (README)
Flags
  • !README contains suspicious pattern: eval\s*\(
Last scanned: 6/11/2026
Install as a Claude Code skill
Method: Clone
Terminal
git clone https://github.com/ljagiello/ctf-skills ~/.claude/skills/ctf-skills
1. Clone the repository into your ~/.claude/skills directory (or copy the skill folder containing SKILL.md).
2. Start a new Claude Code session so the skill registry reloads.
3. Invoke it by name, or let Claude trigger it automatically when the task matches.
💡 If the repo bundles several skills, copy only the folders you need.

11 items in this repository

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.

Install

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.

Install

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.

Install

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.

Install

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.

Install

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.

Install
ctf-pwnSkill

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.

Install

Provides reverse engineering techniques for CTF challenges. Use when the main job is to understand how a compiled, obfuscated, packed, or virtualized target works before exploiting or solving it, including binaries, APKs, WASM, firmware, custom VMs, bytecode, game clients, malware-like loaders, and anti-debug or anti-analysis logic. Do not use it when the vulnerability is already understood and the remaining task is exploitation; use pwn instead. Do not use it for pure web workflows, log or disk forensics, or standalone crypto problems unless reversing the implementation is the real blocker.

Install
ctf-webSkill

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.

Install

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.

Install

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.

Install
Use cases

Skills overview

README preview not available. Visit the repo on GitHub for full documentation.
agent-skillsclaude-codeclaude-code-skillscodexcodex-clictfctf-challengesctf-toolsgeminigemini-cliopencodesecurity

What people ask about ctf-skills

What is ljagiello/ctf-skills?

+

ljagiello/ctf-skills is skills for the Claude AI ecosystem. Agent skills for solving CTF challenges - web exploitation, binary pwn, crypto, reverse engineering, forensics, OSINT, and more It has 2.4k GitHub stars and was last updated 1mo ago.

How do I install ctf-skills?

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You can install ctf-skills by cloning the repository (https://github.com/ljagiello/ctf-skills) or following the README instructions on GitHub. ClaudeWave also provides quick install blocks on this page.

Is ljagiello/ctf-skills safe to use?

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Our security agent has analyzed ljagiello/ctf-skills and assigned a Trust Score of 90/100 (tier: Verified). See the full breakdown of passed checks and flags on this page.

Who maintains ljagiello/ctf-skills?

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ljagiello/ctf-skills is maintained by ljagiello. The last recorded GitHub activity is from 1mo ago, with 1 open issues.

Are there alternatives to ctf-skills?

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Yes. On ClaudeWave you can browse similar skills at /categories/skills, sorted by popularity or recent activity.

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