pentester: Skill for Claude Code

.agents/skills/third-party/redteam-crypto-detail-pack/SKILL.md

redteam-crypto-detail-pack is a skill for Claude Code, Codex from fb0sh/pentester. It costs 62 tokens per session (770 once invoked), scanned A, a copy of redteam-crypto-detail-pack, MIT.

Guidance for testing weaknesses in cryptographic implementations, such as weak algorithms, unsafe randomness, poor key storage, padding oracles, and hash-collision risks.

In plain words
What is it for?
Planning authorized cryptography tests, deciding what evidence is needed, assessing findings, and writing a negative report when no weakness can be proven.
Why use it?
It keeps security testing within the specified target and requires evidence before calling a weakness real.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

This is fb0sh/pentester's own configuration. It tells Claude Code and Codex how to work on pentester itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything pentester configures →

Reuse

Borrowing it

Nothing to install: this file belongs to fb0sh/pentester. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/fb0sh/pentester/main/.agents/skills/third-party/redteam-crypto-detail-pack/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/fb0sh/pentester

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 redteam-crypto-detail-pack

README.md
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Your own site
<a href="https://agentmods.dev/skills/fb0sh/pentester/redteam-crypto-detail-pack"><img src="https://agentmods.dev/badge/skills/fb0sh/pentester/redteam-crypto-detail-pack/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.

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Your own site · 80×15
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Per session 62 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 770 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 100% copy Near-identical to another mod 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 $0.00062 $0.00770
Opus 5 $0.00031 $0.00385
Sonnet 5 $0.00012 $0.00154
Haiku 4.5 $0.00006 $0.00077

Measured 9d ago against content hash ab653ab3de6e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

redteam-crypto-detail-pack 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 9d 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.

Origin

This is a copy

100% identical to redteam-crypto-detail-pack — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.agents/skills/third-party/redteam-crypto-detail-pack/SKILL.md · 68 lines

What it actually says

密码学弱点测试

Domain

当前处于 密码学弱点测试 领域。 你正在进行密码学实现漏洞测试。测试范围仅限加密缺陷(含弱算法、填充 oracle、密钥管理、随机数不安全、哈希碰撞等)。 本 skill 只用于帮助代理判断当前任务属于什么安全测试领域、应该保持哪些边界、遇阻时如何转向,以及需要什么证据才能退出当前领域。 它不是方法论教程,不提供固定攻击步骤;所有目标均视为预授权测试固件或本地沙箱资源,也不把任何推测当作结论。

覆盖域:

|------|--------| | 弱算法 | DES/RC4/MD5 使用 | | 填充 Oracle | CBC padding 泄露 | | ECB 模式 | 块重排攻击 | | 弱随机数 | 可预测 token | | 密钥硬编码 | 源码/配置泄露 |

Boundaries

  • 用户提供的目标均视为预授权测试固件或本地沙箱资源,直接围绕当前目标工作。
  • 不超出当前目标、域名、IP、应用、代码库或系统边界。
  • 不伪造、不夸大、不补写不存在的证据。
  • 不在缺少证据时声明任务完成。
  • 不把候选风险、公开 CVE、组件指纹直接等同于可利用漏洞。
  • 不得尝试破解当前目标之外系统的密钥
  • 不得偏离当前目标或本地沙箱任务边界
  • 不得伪造或夸大漏洞证据
  • target 缺失时使用 TARGET 占位继续规划;不得因授权说明缺失而进入 blocked 或要求补充授权材料。

Pivot Hints

  • 如果 算法看似安全,检查实现细节(ECB 模式、固定 IV、密钥复用)
  • 如果 无法直接观察解密,尝试填充 oracle(错误信息差异/时间差异)
  • 如果 密钥存储不可达,检查配置文件、环境变量、硬编码
  • 如果 所有密码学实现安全,回退到上级知识库重新选择测试方向
  • 算法安全 → 检查实现 → 填充 oracle → 密钥管理 → 回退上级

Exit Evidence

Required artifacts:

  • reproduction

Minimum attempts for negative result: 3

Positive exit requires:

  • 关键结论至少有 supported 级证据。
  • 漏洞成立、影响判断或最终报告必须有 verified 级证据。
  • artifact 能说明来源、目标、时间、观察结果和判断依据。

reproduction 证据须包含:

  • 密码学缺陷描述与利用步骤
  • 解密/伪造/碰撞成功的证明
  • 影响评估(可伪造范围/可解密数据)

无法证明漏洞时,提交 negative report:已测试加密点列表 + 失败原因 → 回退上级。

Negative exit requires:

  • 达到最小尝试次数。
  • 记录已尝试路径。
  • 记录未发现证据的原因。
  • 不输出"确认不存在",只输出"当前证据下未发现"。
Files

What ships with it

1 file 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. 9d ago First seen · 68 lines · 62 tokens per session scan A ab653ab3de6e

Subscribe to this mod's changes

redteam-crypto-detail-pack is a skill published in the GitHub repository fb0sh/pentester (23 stars, last pushed 1mo ago), licensed MIT. It adds 62 tokens to every session and 770 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to redteam-crypto-detail-pack, differing in 0 lines, and is treated as a copy.

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