ctf-binary-bundle

ctf-binary-bundle is a skill for Claude Code, Codex from liuxinye23/CyberStrikeAI. It costs 59 tokens per session (431 once invoked), scanned A, original, Apache-2.0.

A testing guide for unsafe deserialization, where an application turns untrusted saved data back into objects. Depending on the format and code, this can cause data exposure, service failure, or code execution.

In plain words
What is it for?
Recognizing serialized data in cookies, sessions, API parameters, uploads, caches, and messages, then reviewing Java, PHP, Python, and .NET deserialization paths.
Why use it?
It helps identify dangerous places where serialized data is accepted without sufficient trust checks or restrictions.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions Codex.

Good fit Recognizing serialized data in cookies, sessions, API parameters, uploads, caches, and messages, then reviewing Java, PHP, Python, and .NET deserialization paths.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/liuxinye23/cyberstrikeai/ctf-binary-bundle
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 liuxinye23/CyberStrikeAI --skill ctf-binary-bundle
Clone the repo
git clone --depth 1 https://github.com/liuxinye23/CyberStrikeAI

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 ctf-binary-bundle

README.md
[![agentmods](https://agentmods.dev/badge/skills/liuxinye23/cyberstrikeai/ctf-binary-bundle/github.svg)](https://agentmods.dev/skills/liuxinye23/cyberstrikeai/ctf-binary-bundle)
Your own site
<a href="https://agentmods.dev/skills/liuxinye23/cyberstrikeai/ctf-binary-bundle"><img src="https://agentmods.dev/badge/skills/liuxinye23/cyberstrikeai/ctf-binary-bundle/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-binary-bundle

Your own site · 80×15
<a href="https://agentmods.dev/skills/liuxinye23/cyberstrikeai/ctf-binary-bundle"><img src="https://agentmods.dev/badge/skills/liuxinye23/cyberstrikeai/ctf-binary-bundle.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 59 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 431 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 original 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 $0.00059 $0.00431
Opus 5.5 $0.00024 $0.00172
Sonnet 5.5 $0.00012 $0.00086
Haiku 4.5 $0.00006 $0.00043

Measured 2mo ago against content hash 6e9f0d0c88c5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ctf-binary-bundle 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 2mo 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.

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/ctf-binary-bundle/SKILL.md · 67 lines

What it actually says

CTF Binary Bundle

Use this bundle to route binary-heavy CTF prompts to the right next skill without overloading the context window.

Workflow

  1. Classify the sample as native pwn, reverse, or hybrid.
  2. Load only the member skill that matches the actual blocker.
  3. Keep evidence on architecture, mitigations, entrypoints, and remote constraints.

Load Order

  • Start with ctf-skills when the category is still ambiguous.
  • Load elf-pwn-triage when the challenge is an ELF or an nc-backed native service.
  • Load wasm-reverse-triage when the main blocker is browser or WASM logic recovery.

Output

  • Dominant subcategory
  • Required member skills
  • First-pass triage notes
  • Next solve direction
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. 2mo ago First seen · 67 lines · 59 tokens per session scan A 6e9f0d0c88c5

Subscribe to this mod's changes

ctf-binary-bundle is a skill published in the GitHub repository liuxinye23/CyberStrikeAI (0 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 59 tokens to every session and 431 once invoked, about $0.0002 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 2026-08-31.

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