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- Add scripts/agent.py and references/api-reference.md to all remaining skills - Update all 648 LICENSE files: copyright now reads 'Mahipal' - Add implementing-security-monitoring-with-datadog (new skill with full anatomy) - All 649 skills now have: SKILL.md, LICENSE, scripts/agent.py, references/api-reference.md
58 lines
1.8 KiB
Markdown
58 lines
1.8 KiB
Markdown
# API Reference: Testing API Authentication Weaknesses
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## JWT Security Checks
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| Check | Severity | Description |
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|-------|----------|-------------|
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| alg:none | Critical | Signature verification bypassed |
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| Weak HMAC secret | Critical | Brute-forceable signing key |
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| No exp claim | High | Token never expires |
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| Long TTL (>24h) | Medium | Extended token validity |
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| Sensitive data in payload | High | PII in JWT claims |
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| Missing iss/aud claims | Medium | Token scope ambiguity |
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## OWASP API2:2023 Test Points
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| Test | Category |
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|------|----------|
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| Unauthenticated endpoint access | Missing auth middleware |
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| JWT alg:none bypass | Broken token validation |
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| JWT secret brute-force | Weak cryptographic key |
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| Token reuse after logout | Missing revocation |
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| Refresh token rotation | Session management |
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| Account enumeration | Information disclosure |
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| Password policy bypass | Weak credential controls |
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## Common JWT HMAC Secrets
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| Secret | Type |
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|--------|------|
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| `secret` | Default |
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| `your-256-bit-secret` | JWT.io example |
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| `jwt_secret` | Convention |
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| `changeme` | Placeholder |
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## JWT Attack Tools
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| Tool | Purpose |
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|------|---------|
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| jwt_tool | JWT testing with 12+ attack modes |
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| hashcat -m 16500 | GPU JWT secret brute-force |
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| Burp JWT Editor | Interactive JWT manipulation |
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| Nuclei | Auth bypass templates |
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## Python Libraries
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| Library | Version | Purpose |
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|---------|---------|---------|
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| `requests` | >=2.28 | HTTP API calls |
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| `base64` | stdlib | JWT decoding |
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| `hmac` | stdlib | HMAC signature testing |
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| `hashlib` | stdlib | Hash functions |
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## References
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- OWASP API Security Top 10: https://owasp.org/API-Security/
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- JWT Best Practices RFC 8725: https://www.rfc-editor.org/rfc/rfc8725
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- jwt_tool: https://github.com/ticarpi/jwt_tool
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