cloud-ctf

cloud-ctf is a skill for Claude Code, Codex from AeonDave/malskill. It costs 40 tokens per session (5,497 once invoked), scanned C, original, no licence file.

A practice guide for cloud-security capture-the-flag challenges involving AWS, Google Cloud, and Microsoft Azure resources and credentials.

In plain words
What is it for?
Investigating storage buckets, identity and access rules, metadata services, encryption keys, secrets, snapshots, object versions, and linked identities.
Why use it?
It helps developers trace cloud permissions and access paths while solving security puzzles in a controlled lab setting.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Investigating storage buckets, identity and access rules, metadata services, encryption keys, secrets, snapshots, object versions, and linked identities.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/aeondave/malskill/cloud-ctf
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 AeonDave/malskill --skill cloud-ctf
Clone the repo
git clone --depth 1 https://github.com/AeonDave/malskill

Made for: Claude Code, 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 cloud-ctf

README.md
[![agentmods](https://agentmods.dev/badge/skills/aeondave/malskill/cloud-ctf.svg)](https://agentmods.dev/skills/aeondave/malskill/cloud-ctf)
Your own site
<a href="https://agentmods.dev/skills/aeondave/malskill/cloud-ctf"><img src="https://agentmods.dev/badge/skills/aeondave/malskill/cloud-ctf.svg" alt="Measured on agentmods" height="20"></a>
Per session 40 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,497 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 5 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 $0.00040 $0.05497
Opus 5 $0.00020 $0.02749
Sonnet 5 $0.00008 $0.01099
Haiku 4.5 $0.00004 $0.00550

Measured 4d ago against content hash 216e9c7be763, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade C, and why

cloud-ctf scanned grade C with 5 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 4d 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.

Asks for rootlowPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

sudo cat /root/flag.txt

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Reaches for credential filesmediumPrivilege escalation

SSH keys, cloud credentials, git-credentials, .npmrc, /etc/shadow: reading these is how a config file becomes a credential leak.

# Save AccessKeyId + SecretAccessKey + Token to ~/.aws/credentials

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Cloud metadata endpointmediumServer-side request forgery

One request to 169.254.169.254 can return temporary IAM credentials.

TOKEN=$(curl -s -X PUT http://169.254.169.254/latest/api/token \

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl '<LARGE_url_from_response>' --output document.png

Runs shell commandslowCapability

Expected in a hook, worth knowing in a rule or an instructions file.

subprocess.run(["cat", "/flag.txt"])
offensive-ctf/cloud-ctf/SKILL.md · 588 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. 4d ago First seen · 588 lines · 40 tokens per session scan C 216e9c7be763

Subscribe to this mod's changes

cloud-ctf is a skill published in the GitHub repository AeonDave/malskill (18 stars, last pushed 3d ago), with no licence file. It adds 40 tokens to every session and 5,497 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it C with 5 findings (asks for root, reaches for credential files, cloud metadata endpoint). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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