JWT attack methodology for penetration testers. Covers algorithm confusion (alg:none, RS256→HS256), weak HMAC secret brute force, kid parameter injection (SQLi, path traversal), jku/x5u/jwk header injection, JWKS cache poisoning, JWS/JWE confusion, timing attacks, and mobile JWT storage extraction. Use when testing JWT-based authentication, hunting auth bypass via token manipulation, or evaluating JWT implementation security in web or mobile apps.
How to install offensive-jwt?
snailsploit/claude-red/offensive-jwt
$npx -y skills add snailsploit/claude-red --skill offensive-jwtInstalls into the current project.
›Prefer a prompt? Paste this to your agent
Run `npx skills use "https://github.com/snailsploit/claude-red" --skill "snailsploit/claude-red/offensive-jwt"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/snailsploit/claude-red" that are relevant to the current task. Run `npx skills add "https://github.com/snailsploit/claude-red"` and select the relevant skills, then follow their instructions.
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