credential-audit

credential-audit is a skill for Claude Code from ShulkwiSEC/bb-huge. It costs 103 tokens per session (9,184 once invoked), scanned A, original, MIT.

An authentication and credential security assessment guide covering passwords, login protections, multi-factor authentication, OAuth, Kerberos, and session tokens.

In plain words
What is it for?
Use it to test authorized login systems, credential policies, account protections, token quality, and related cloud or directory credentials.
Why use it?
It helps find weak or reusable credentials, missing lockouts, bypassable MFA, unsafe identity-provider settings, and predictable tokens.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter. Also seen: positional $N argument; mentions Claude Code; mentions OpenCode.

Good fit Use it to test authorized login systems, credential policies, account protections, token quality, and related cloud or directory credentials.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/shulkwisec/bb-huge/credential-audit
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 ShulkwiSEC/bb-huge --skill credential-audit
Clone the repo
git clone --depth 1 https://github.com/ShulkwiSEC/bb-huge

Made for: Claude Code.

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 credential-audit

README.md
[![agentmods](https://agentmods.dev/badge/skills/shulkwisec/bb-huge/credential-audit/github.svg)](https://agentmods.dev/skills/shulkwisec/bb-huge/credential-audit)
Your own site
<a href="https://agentmods.dev/skills/shulkwisec/bb-huge/credential-audit"><img src="https://agentmods.dev/badge/skills/shulkwisec/bb-huge/credential-audit/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 credential-audit

Your own site · 80×15
<a href="https://agentmods.dev/skills/shulkwisec/bb-huge/credential-audit"><img src="https://agentmods.dev/badge/skills/shulkwisec/bb-huge/credential-audit.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 103 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 9,184 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 2 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 $0.00103 $0.09184
Opus 5 $0.00051 $0.04592
Sonnet 5 $0.00021 $0.01837
Haiku 4.5 $0.00010 $0.00918

Measured 6d ago against content hash 568400aaa73d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

credential-audit scanned grade A with 2 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 6d 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.

Sends data to an external URLlowData exfiltration

A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.

kali(command="sleep 60 && curl -s -o /dev/null -w '%{http_code}' -X POST https://TARGET/login -d 'user=testuser&pass=wrong'")

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.

1. **GitHub dorks**: `curl -s 'https://api.github.com/search/code?q=default+password+VENDOR+extension:md' | jq '.items[:5] | .[].html_url'` — search install guides, Docker entrypoints, Helm values.yaml
skills/curated/credential-audit/SKILL.md · 617 lines

How it starts

The opening of the file, as written. The whole thing — 617 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Authentication & Credential Audit

You are an expert credential security tester. Your goal: systematically test authentication mechanisms for weaknesses — default credentials, weak passwords, credential reuse, lockout bypass, MFA weaknesses, OAuth/OIDC flaws, session token entropy, Kerberos attacks, and credential harvesting. Report every confirmed authentication failure with evidence.

Request: $ARGUMENTS


CHAIN COMMITMENTS — DECLARE BEFORE STARTING

Read this before executing any workflow phase. Commit to MANDATORY chains before your first tool call.

Trigger Chain Mandatory? Claude Code opencode
After session(action="complete") /gh-export OPTIONAL — user request only Skill(skill="gh-export") cat ~/.config/opencode/commands/gh-export.md
Credentials provide shell/RCE access to a system /post-exploit MANDATORY Skill(skill="post-exploit") cat ~/.config/opencode/commands/post-exploit.md
AD domain credentials found /ad-assessment OPTIONAL Skill(skill="ad-assessment") cat ~/.config/opencode/commands/ad-assessment.md
Cloud credentials found /cloud-security OPTIONAL Skill(skill="cloud-security") cat ~/.config/opencode/commands/cloud-security.md

If credentials yield shell access: MUST invoke /post-exploit — do not stop at credential confirmation.

Logging: Before invoking any skill above, call session(action="set_skill", options={"skill":"<name>","reason":"<why>","chained_from":"<this-skill>"}) — this writes the SKILL_CHAIN entry to pentest.log.


Chained from /pentester — Discovered Credential Material

When invoked from the pentester skill with discovered usernames, hashes, or credential context:

  1. Parse the arguments — extract: target IP/hostname, services list (e.g. service=ssh,ftp,http), user list path (e.g. userlist=/tmp/discovered-users.txt), and any context about how the material was discovered.

Read the full file on GitHub · 617 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. 6d ago First seen · 617 lines · 103 tokens per session scan A 568400aaa73d

Subscribe to this mod's changes

credential-audit is a skill published in the GitHub repository ShulkwiSEC/bb-huge (22 stars, last pushed 2mo ago), licensed MIT. It adds 103 tokens to every session and 9,184 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 2 findings (sends data to an external url, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

Related

Other skills, from other repositories

bugcrowd-reporting

Bugcrowd-specific reporting tactics complementing report-writing: VRT category search-and-fallback strategy when no exact match exists, manual severity override when VRT defaults underrate impact, severity-request paragraph as first body section, OOS-clause rebuttal templates (rate limiting on auth-flow endpoints…

elementalsouls/Claude-BugHunter · 171 tokens

skill-context-detection

Auto-detect work context (Dev vs Knowledge) — use to tailor workflows based on current task type.

nyldn/claude-octopus · 25 tokens

skill-copilot-provider

GitHub Copilot CLI as optional zero-cost provider via copilot -p programmatic mode.

nyldn/claude-octopus · 24 tokens

supabase

Supabase / PostgREST Row-Level-Security playbook — pull the anon (or leaked servicerole) key out of the frontend JS, map tables from the auto-generated OpenAPI spec, test anonymous RLS READ disclosures (PII/secret leaks), and anonymous RLS WRITE abuse (insert/update/delete — e.g. forging…

PentesterFlow/agent · 120 tokens

skill-security-framing

URL validation and content sanitization for untrusted sources — use when handling external input safely.

nyldn/claude-octopus · 22 tokens

race

Race condition / TOCTOU playbook — limit overrun (one-time codes used twice, gift cards spent twice), single-packet attack (last-byte sync) to force parallel processing, and state-confusion races (file upload + read, order before payment). Use when timing-sensitive logic could be abused — one-time codes, coupons/gift…

PentesterFlow/agent · 82 tokens