Individual skill
authbypass-authentication-flaws
Authentication bypass testing playbook. Use when assessing login flows, password reset logic, account recovery, MFA bypass, token predictability, brute-force resistance, and session boundary flaws.
knowledge/hack-skills/skills/authbypass-authentication-flaws/SKILL.md
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# SKILL: Authentication Bypass — Expert Attack Playbook
> **AI LOAD INSTRUCTION**: Expert authentication bypass techniques. Covers SQL injection-based login bypass, password reset flaws, token predictability, account enumeration, brute force bypass, and multi-factor auth bypass. Distinct from JWT/OAuth (covered in ../jwt-oauth-token-attacks/SKILL.md). Focus on the login mechanism itself.
## 0. AUTHORIZED CREDENTIAL TEST PLANNING
After reducing routing entries, default credentials, username variants, port focus, and wordlist sizing are handled here in one place.
### Service-first tiny sets
| Service Type | First Usernames | First Passwords |
|---|---|---|
| phpMyAdmin | `root`, `admin` | empty, `root`, `phpmyadmin`, `admin` |
| FTP | `ftp`, `admin`, `test` | empty, `ftp`, `admin`, `123456` |