ctf-misc SKILL.md skillA
This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.
ctf-misc from naravid19/claude-ctf-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add naravid19/claude-ctf-skills/ctf-misc@git:20261024.8f9bd65Pins git:20261024.8f9bd65 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- naravid19/claude-ctf-skills
- Path
skills/ctf-misc/SKILL.md- Versions recorded
- 3
- Latest version
- git:20261024.8f9bd65, committed Oct 24, 2026
- First version recorded
- Sep 8, 2026
- Size
- 28,394 bytes
- Repository stars
- 4
- License
- MIT
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…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# CTF Miscellaneous Quick reference for miscellaneous CTF challenges. Each technique has a one-liner here; see supporting files for full details. ## Prerequisites **Python packages (all platforms):** ```bash pip install "pwntools==4.15.0" "segno==1.6.6" z3-solver Pillow numpy requests dnslib ``` **Linux (apt):** ```bash apt install libzbar0 qrencode ffmpeg ``` **macOS (Homebrew):** ```bash brew install ffmpeg qrencode ``` **Manual install:** - SageMath — Linux: `apt install sagemath`, macOS: `brew install --cask sage` ## Additional Resources - [pyjails.md](pyjails.md) - Python jail/sandbox escape techniques, quine context detection, restricted character repunit decomposition, func_globals module chain traversal, restricted charset number generation, class attribute persistence, f-string config injection via stored eval - [bashjails.md](bashjails.md) - Bash jail/restricted shell escape techniques, HISTFILE file read trick, bash -v verbose mode, ctypes.sh direct C library calls - [encodings.md](encodings.md) - Encodings, QR codes, esolangs, UTF-16 tricks, BCD encoding, multi-layer auto-decoding, indexed directory QR reassembly, multi-stage URL encoding chains …
Read the whole file at its exact version.
How to install
mdr add naravid19/claude-ctf-skills/ctf-misc@sha256:5347e81b39cfe746The line at the top of this page pins the label git:20261024.8f9bd65, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_3jjpt335lezur2nm)
0 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Sep 8, 2026 and Oct 24, 2026, about one every 23 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261024.8f9bd65 latest | 2026-10-24 | 8f9bd65 | 28,394 B | A | view · diff |
| git:20260927.84043a0 | 2026-09-27 | 84043a0 | 26,698 B | A | view · diff |
| git:20260908.0cdca9b | 2026-09-08 | 0cdca9b | 26,323 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (28394 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
naravid19/claude-ctf-skills · 4 stars · license MIT · pushed 2026-10-24 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_3jjpt335lezur2nm GET https://markdownregistry.com/api/v1/resolve?ref=naravid19/claude-ctf-skills/ctf-misc GET https://markdownregistry.com/api/v1/blob/5347e81b39cfe7466ef164db6df7eefa5294e00b2c7f22706f1614f42be78197
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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