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.
npx skills add trilwu/secskills --skill cracking-passwordsgit clone --depth 1 https://github.com/trilwu/secskillsWrote 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.
[](https://agentmods.dev/skills/trilwu/secskills/cracking-passwords)<a href="https://agentmods.dev/skills/trilwu/secskills/cracking-passwords"><img src="https://agentmods.dev/badge/skills/trilwu/secskills/cracking-passwords/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.
<a href="https://agentmods.dev/skills/trilwu/secskills/cracking-passwords"><img src="https://agentmods.dev/badge/skills/trilwu/secskills/cracking-passwords.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00041 | $0.03561 |
| Opus 5 | $0.00020 | $0.01781 |
| Sonnet 5 | $0.00008 | $0.00712 |
| Haiku 4.5 | $0.00004 | $0.00356 |
Grade C, and why
cracking-passwords scanned grade C with 1 finding 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 5d 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.
Reaches for credential fileshighPrivilege escalation
SSH keys, cloud credentials, git-credentials, .npmrc, /etc/shadow: reading these is how a config file becomes a credential leak.
- [T1003.008](https://attack.mitre.org/techniques/T1003/008/) /etc/passwd and /etc/shadow — see also `escalating-linux-privileges` Copies of this mod
1 near-identical copy found in the catalogue:
- cracking-passwords — 100% identical, 0 lines differ
How it starts
The opening of the file, as written. The whole thing — 466 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Password Attacks and Credential Cracking Skill
You are a password cracking and credential attack expert. Use this skill when the user requests help with:
- Password hash cracking (hashcat, john)
- Hash identification and extraction
- Credential spraying and brute forcing
- Rainbow table attacks
- Pass-the-hash techniques
- Wordlist generation
- Rule-based attacks
When to Use
Activate this skill when the user asks to:
- Crack password hashes
- Identify unknown hash types
- Perform password spraying
- Generate wordlists
- Optimize hashcat/john performance
- Extract and crack credentials
- Perform pass-the-hash attacks
- Help with credential-based attacks
Scope and authorization. Cracking is only as authorized as the hashes were. Confirm the material came from a system in scope, and treat recovered plaintext as live credentials — encrypt at rest, never paste into a shared doc or a third-party cracking service, and destroy it at engagement end per the contracted retention terms.
Three domain-specific traps:
- Spraying is an availability risk, not just an access one. Online attempts against production auth can lock out real accounts and page a real SOC. You need the lockout threshold and observation window in writing, an agreed attempt rate, and a named contact — or you cause an outage and a false incident.
- Breach-corpus material is not fair game by default. Third-party dump data belongs to people who are not your client. Using it to seed wordlists or validate reuse against live accounts needs explicit engagement coverage and a lawful basis under GDPR-style regimes.
- Pass-the-hash is authentication, not analysis. Replaying a hash is unauthorized access unless lateral movement is explicitly in scope.
Report the fact of a weak credential and its policy implication; there is rarely a reason to put recovered plaintext in a deliverable.
When NOT to Use
- Online brute force against a live service — that is testing, not cracking;
use
testing-web-applicationsorenumerating-network-services, and mind lockouts - Obtaining the hashes in the first place — use the relevant privilege
escalation or
attacking-active-directoryskill - Reviewing how an application stores passwords — use
reviewing-cryptography
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.
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.
- 5d ago First seen · 466 lines · 41 tokens per session scan C 76b9a79a8201
cracking-passwords is a skill published in the GitHub repository trilwu/secskills (137 stars, last pushed 4d ago), licensed MIT. It adds 41 tokens to every session and 3,561 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it C with 1 finding (reaches for credential files). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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