kanxue-kctf-workflow

kanxue-kctf-workflow is a skill for Codex from manyuegong33/r0crawl_skills. It costs 87 tokens per session (567 once invoked), scanned A, original, no licence file.

A workflow for analyzing and solving 看雪 KCTF and other capture-the-flag challenges from articles, archives, and challenge programs. It covers Windows key checkers, Linux programs, and anti-analysis or virtual-machine puzzles.

In plain words
What is it for?
Use it to inspect KCTF material, replay challenges locally, reverse-engineer binaries, or build a solver for a challenge.
Why use it?
It turns scattered challenge files and write-ups into a repeatable local analysis and solving process.

Skill for Codex

Written for Codex: agents/openai.yaml present.

Good fit Use it to inspect KCTF material, replay challenges locally, reverse-engineer binaries, or build a solver for a challenge.

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Install with agentmods
npx agentmods add skills/manyuegong33/r0crawl_skills/kanxue-kctf-workflow
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 manyuegong33/r0crawl_skills --skill kanxue-kctf-workflow
Clone the repo
git clone --depth 1 https://github.com/manyuegong33/r0crawl_skills

Made for: Codex.

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 kanxue-kctf-workflow

README.md
[![agentmods](https://agentmods.dev/badge/skills/manyuegong33/r0crawl_skills/kanxue-kctf-workflow/github.svg)](https://agentmods.dev/skills/manyuegong33/r0crawl_skills/kanxue-kctf-workflow)
Your own site
<a href="https://agentmods.dev/skills/manyuegong33/r0crawl_skills/kanxue-kctf-workflow"><img src="https://agentmods.dev/badge/skills/manyuegong33/r0crawl_skills/kanxue-kctf-workflow/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 kanxue-kctf-workflow

Your own site · 80×15
<a href="https://agentmods.dev/skills/manyuegong33/r0crawl_skills/kanxue-kctf-workflow"><img src="https://agentmods.dev/badge/skills/manyuegong33/r0crawl_skills/kanxue-kctf-workflow.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 87 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 567 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. 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 $0.00087 $0.00567
Opus 5.5 $0.00035 $0.00227
Sonnet 5.5 $0.00017 $0.00113
Haiku 4.5 $0.00009 $0.00057

Measured 1mo ago against content hash 9f75d04c6a52, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

kanxue-kctf-workflow scanned grade A with 0 findings 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 1mo ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/kctf_scan.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/kanxue-kctf-workflow/SKILL.md · 56 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

Files

What ships with it

4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 1mo ago First seen · 56 lines · 87 tokens per session scan A 9f75d04c6a52

Subscribe to this mod's changes

kanxue-kctf-workflow is a skill published in the GitHub repository manyuegong33/r0crawl_skills (348 stars, last pushed 1mo ago), with no licence file. It adds 87 tokens to every session and 567 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-21.

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