ctf-pwn

ctf-pwn is a skill for Claude Code from DekaPrayoga/AurixAgent. It costs 122 tokens per session (4,781 once invoked), scanned C, original, no licence file.

A guide to exploiting vulnerable native programs in capture-the-flag (CTF) security competitions. It focuses on turning memory bugs into unintended behaviour such as code execution or higher privileges.

In plain words
What is it for?
It is for buffer overflows, format-string bugs, heap flaws, return-oriented programming, ret2libc, shellcode, kernel targets, and vulnerable services.
Why use it?
It helps you move from finding a buffer overflow or similar flaw to constructing an exploit that reaches the challenge's goal.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit It is for buffer overflows, format-string bugs, heap flaws, return-oriented programming, ret2libc, shellcode, kernel targets, and vulnerable services.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/dekaprayoga/aurixagent/ctf-pwn
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add DekaPrayoga/AurixAgent --skill ctf-pwn
Clone the repo
git clone --depth 1 https://github.com/DekaPrayoga/AurixAgent

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for ctf-pwn

README.md
[![agentmods](https://agentmods.dev/badge/skills/dekaprayoga/aurixagent/ctf-pwn/github.svg)](https://agentmods.dev/skills/dekaprayoga/aurixagent/ctf-pwn)
Your own site
<a href="https://agentmods.dev/skills/dekaprayoga/aurixagent/ctf-pwn"><img src="https://agentmods.dev/badge/skills/dekaprayoga/aurixagent/ctf-pwn/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for ctf-pwn

Your own site · 80×15
<a href="https://agentmods.dev/skills/dekaprayoga/aurixagent/ctf-pwn"><img src="https://agentmods.dev/badge/skills/dekaprayoga/aurixagent/ctf-pwn.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 122 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,781 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00122 $0.04781
Opus 5 $0.00061 $0.02390
Sonnet 5 $0.00024 $0.00956
Haiku 4.5 $0.00012 $0.00478

Measured 6d ago against content hash 7a903ffd7013, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade C, and why

ctf-pwn scanned grade C with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Encoded or obfuscated payloadhighSupply chain

base64 or hex that is decoded and executed hides what actually runs from anyone reading the file.

**CPU emulator eval injection:** When an emulator's print opcode uses `eval('"' + buf + '"')` for escape sequences, build `"+__import__("os").system("cmd")#` in emulator memory via ADD opcodes to escape the string and ex
skills/bug-hunt/ctf-pwn/SKILL.md · 211 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 6d ago First seen · 211 lines · 122 tokens per session scan C 7a903ffd7013

Subscribe to this mod's changes

ctf-pwn is a skill published in the GitHub repository DekaPrayoga/AurixAgent (63 stars, last pushed 1mo ago), with no licence file. It adds 122 tokens to every session and 4,781 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it C with 1 finding (encoded or obfuscated payload). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.