pentester

A coordinator for authorized penetration tests, which are security checks that look for ways systems could be attacked. It organizes existing instructions and tools into repeated steps for analyzing evidence, choosing an action, checking the result, and recording findings.

In plain words
What is it for?
Use it to start or continue a pentest, choose guidance for the target type, follow testing phases, validate results, and capture findings.
Why use it?
It helps decide what to do next during a security lab, Hack The Box machine, or internal assessment instead of scanning or acting without a plan.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/jessefmoore/offensive-claude-code/pentester
Any agent
npx skills add jessefmoore/offensive-claude-code --skill pentester
Clone the repo
git clone --depth 1 https://github.com/jessefmoore/offensive-claude-code

Made for: Claude Code, Codex.

Per session 90 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,537 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00090 $0.01537
Opus 5 $0.00045 $0.00768
Sonnet 5 $0.00018 $0.00307
Haiku 4.5 $0.00009 $0.00154

Measured 2d ago against content hash 9e02a1511a48, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

pentester 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 2d 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/pentester/SKILL.md · 104 lines

How it starts

The opening of the file, as written. The whole thing — 104 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Pentester — Engagement Orchestration

This skill is the entry point that makes the rest of the config work together. It does not add new techniques; it sequences the ones already in kb/, skills/, skills/scripts/, and agents/ into a repeatable analyze → decide → act → capture → re-assess loop.

When to invoke

  • Start of any engagement, HackSmarter lab, or HTB box ("start a pentest against X", "new engagement", "I'm doing HTB ", /pentester).
  • Mid-engagement when you want the next move decided ("what's next?", "I'm stuck", "here's the output, re-assess").

Persona routing (pick one, per CLAUDE.md)

Context Persona Skill to load Phase files
HackSmarter lab / real internal engagement Internal Pentester (OCD AD mindmap) skills/active-directory-attack (+ skills/netexec) kb/phases/0–5
Hack The Box machine HTB Operator (0xdf) skills/htb nmap → service enum → foothold → privesc

The loop (run this every turn)

  1. Orient. Read kb/INDEX.md; map the current signal/finding to the exact technique file. Don't scan blindly, don't invent commands when the KB has them.
  2. Load the phase runbook. Open kb/phases/<N>-<phase>.md for the current phase — it is the ordered "what to run next" list. (HTB: follow the enum→foothold→privesc flow in skills/htb.)
  3. Load the domain skill for depth + OPSEC (skills/netexec, skills/web-pentest, skills/privesc-linux, etc.).
  4. Execute. Prefer existing helpers in skills/scripts/ (e.g. ssh_cmd.py to pivot, nxc_kerberos_wrapper.py, ntds_diff.py); use exact syntax from kb/<domain>/ and kb/payloads/. Try --local-auth alongside domain auth on Windows.
  5. Validate. Confirm exploitability before claiming a finding. No proof = not a finding.
  6. Capture immediately. The moment a finding lands (creds, shell, privesc, lateral move, Kerberos abuse, ADCS, DCSync, sensitive data), invoke the right report-writer — don't batch.
  7. Re-assess. State current state + prioritized next steps; loop back to step 1.

Read the full file on GitHub · 104 lines

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. 2d ago First seen · 104 lines · 90 tokens per session scan A 9e02a1511a48

Subscribe to this mod's changes

pentester is a skill published in the GitHub repository jessefmoore/offensive-claude-code (2 stars, last pushed 3mo ago), licensed MIT. It adds 90 tokens to every session and 1,537 once invoked, about $0.0005 per session on Opus 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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