Individual skill
tools-hydra
Run online password attacks against live services with hydra and its alternatives (medusa, ncrack, patator, crowbar) — service modules, http-post-form failure strings, thread tuning, resume, and lockout avoidance. Load when scope allows credential guessing against SSH/FTP/RDP/MySQL/web login forms and offline cracking is not an option. Signals: hydra -l -P, http-post-form, ^USER^ ^PASS^, ssh:// rdp:// mysql:// targets, medusa -M, ncrack, patator, login brute force.
skills/tools/tools-hydra/SKILL.md
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- Last checked
- Nov 7, 2026
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- Repository last updated
- Oct 14, 2026
- License
- MIT
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# hydra & online password attacks
## When it applies
The engagement scope (`tradecraft-scope-roe`, `scope.txt`) explicitly permits online credential
guessing against a live service — SSH, FTP, RDP, MySQL, a web login form — and you have no hash to
crack offline (`tools-hashcat`). Online attacks are loud, slow, and lock accounts: check
`network-password-spraying` first — one password across many users is usually safer than many
passwords against one user.
## Why it works
Login services are oracles: every attempt returns success or failure. hydra/medusa/ncrack/patator
parallelize guesses across protocol modules and stop on the first valid pair. The whole craft is
(a) the right failure signal so you can tell "wrong password" from "wrong request", and (b) pacing
so you finish before the lockout policy finishes you.