ctf-pwn SKILL.md skillA

ctf-pwn from ljagiello/ctf-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add ljagiello/ctf-skills/ctf-pwn@git:20261027.2388a3b

Pins git:20261027.2388a3b in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: ljagiello/ctf-skills
Path: ctf-pwn/SKILL.md
Versions recorded: 8
Latest version: git:20261027.2388a3b, committed Oct 27, 2026
First version recorded: Apr 3, 2026
Size: 20,932 bytes
Repository stars: 3,657
License: MIT

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.…

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 Binary Exploitation (Pwn)

Quick reference for binary exploitation (pwn) 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" "ROPgadget==7.7" "ropper==1.13.13"
# or via script: bash scripts/install_ctf_tools.sh python
```

**uv alternative:**
```bash
uv venv && uv pip install "pwntools==4.15.0" "ROPgadget==7.7" "ropper==1.13.13"
```

**Linux (apt):**
```bash
apt install gdb binutils strace ltrace qemu-system-x86
```

**Optional cross-arch (ARM/MIPS — Debian/Ubuntu):**
```bash
apt install qemu-user qemu-user-static gdb-multiarch binutils-multiarch libc6-armhf-cross libc6-arm64-cross libc6-mips-cross
```

**macOS (Homebrew):**
```bash
brew install gdb binutils qemu
```

**Ruby gems (all platforms):**
```bash
gem install one_gadget seccomp-tools
```

**Manual install:**
- pwndbg — Linux: [GitHub](https://github.com/pwndbg/pwndbg), macOS: `brew install pwndbg/tap/pwndbg-gdb`
- checksec — included with pwntools (`checksec --file=binary`)
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add ljagiello/ctf-skills/ctf-pwn@sha256:ca3b7254d973c18d

The line at the top of this page pins the label git:20261027.2388a3b, 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.

Badge

[![mdr](https://markdownregistry.com/badge/art_i32dx7b4gjfbeuss.svg)](https://markdownregistry.com/a/art_i32dx7b4gjfbeuss)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 8 versions of this file, between Apr 3, 2026 and Oct 27, 2026, about one every 30 days.

version	committed	commit	size	audit
git:20261027.2388a3b latest	2026-10-27	2388a3b	20,932 B	A	view · diff
git:20261019.9eeabd6	2026-10-19	9eeabd6	20,906 B	A	view · diff
git:20261015.c957f4f	2026-10-15	c957f4f	20,284 B	A	view · diff
git:20260912.61c2efe	2026-09-12	61c2efe	19,487 B	A	view · diff
git:20260417.b80ec3f	2026-04-17	b80ec3f	19,069 B	A	view · diff
git:20260413.62df117	2026-04-13	62df117	18,469 B	A	view · diff
git:20260413.730d82f	2026-04-13	730d82f	18,194 B	A	view · diff
git:20260403.008fb99	2026-04-03	008fb99	17,814 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.

pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (20932 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

GitHub

ljagiello/ctf-skills · 3,657 stars · license MIT · pushed 2026-11-06 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_i32dx7b4gjfbeuss
GET https://markdownregistry.com/api/v1/resolve?ref=ljagiello/ctf-skills/ctf-pwn
GET https://markdownregistry.com/api/v1/blob/ca3b7254d973c18d2b30fd1f07db1ea30a2a032560031589786d1a3cfa0d4237

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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