Individual skill
testing-mobile-api-authentication
Tests authentication and authorization mechanisms in mobile application APIs to identify broken authentication, insecure token management, session fixation, privilege escalation, and IDOR vulnerabilities. Use when performing API security assessments against mobile app backends, testing JWT implementations, evaluating OAuth flows, or assessing session management. Activates for requests involving mobile API auth testing, token security assessment, OAuth mobile flow testing, or API authorization bypass.
internal/tools/skills/data/mobile-security/testing-mobile-api-authentication/SKILL.md
Source commit d42f381ad34843e71a42658e5c57290c713e85af
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- Matches the observed repository HEAD
- Yes
- Scanner rules are current
- Yes
- Repository scan complete
- No
- Skill scan complete
- No
- Observed behavior
- Network or broad shell
- Last checked
- Nov 9, 2026
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Repository context
- Repository stars (not skill ratings)
- 1,325
- Repository last updated
- Nov 9, 2026
- License
- Apache-2.0
Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.
- cybersecurity Repository topic
- security Repository topic
- bug-bounty Repository topic
- automation Repository topic
- autonomous-pentesting Repository topic
- ai-agent Repository topic
- ai-security Repository topic
- ethical-hacking Repository topic
- golang Repository topic
- penetration-testing Repository topic
- mobile-security Declared skill tag
- android Declared skill tag
- ios Declared skill tag
- api-security Declared skill tag
- authentication Declared skill tag
- penetration-testing Declared skill tag
- security Derived category
- testing Derived category
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# Testing Mobile API Authentication
## When to Use
Use this skill when:
- Assessing mobile app backend API authentication during penetration tests
- Testing JWT token implementation for common vulnerabilities (none algorithm, weak signing)
- Evaluating OAuth 2.0 / OIDC flows in mobile applications for redirect, PKCE, and scope issues
- Testing for broken object-level authorization (BOLA/IDOR) in API endpoints
**Do not use** this skill against production APIs without explicit authorization and rate-limiting awareness.
## Most Often Missed & How to Confirm
- **JWT `alg:none` / algorithm confusion** — confirm by submitting a `none` token or an RS256→HS256 token signed with the public key and seeing it accepted.