owasp-mobile-security-checker

OWASP Mobile Security Checker

Requirements

• Python 3.7+
• Flutter/Dart project with pubspec.yaml
• Android and/or iOS targets
• Run scripts from the project root directory

Comprehensive security analysis for Flutter and mobile applications based on OWASP Mobile Top 10 (2024).

Automated Scanners

Four Python scanners cover the most automatable risk categories. Replace <skill-dir> with the skill's install path (e.g. ~/.claude/skills/owasp-mobile-security-checker):

M1 — Hardcoded Secrets

python3 <skill-dir>/scripts/scan_hardcoded_secrets.py /path/to/project

Detects API keys, tokens, passwords, AWS credentials, and Firebase keys in Dart code and config files.

M2 — Dependency Vulnerabilities

python3 <skill-dir>/scripts/check_dependencies.py /path/to/project

Analyzes pubspec.yaml for outdated packages, any version constraints, and known CVEs.

M5 — Network Security

python3 <skill-dir>/scripts/check_network_security.py /path/to/project

Checks HTTP vs HTTPS usage, certificate pinning, Android Network Security Config, and iOS ATS settings.

M9 — Insecure Storage

python3 <skill-dir>/scripts/analyze_storage_security.py /path/to/project

Identifies unencrypted SharedPreferences, plaintext file storage, unencrypted databases, and insecure backup configurations.

Manual Analysis

M3, M4, M6, M7, M8, and M10 require code review. See references/owasp_mobile_top_10_2024.md for Flutter-specific vulnerability patterns, attack flows, and remediation for each category.

Workflow

Is this a comprehensive audit?
├─ YES → Run all 4 scanners → Review JSON outputs → Manual analysis (M3/M4/M6/M7/M8/M10) → Generate report
└─ NO → Continue...

Specific risk category?
├─ M1 → scan_hardcoded_secrets.py
├─ M2 → check_dependencies.py
├─ M5 → check_network_security.py
├─ M9 → analyze_storage_security.py
└─ M3/M4/M6/M7/M8/M10 → references/owasp_mobile_top_10_2024.md → manual analysis

Quick pre-release check?
└─ YES → Run all 4 scanners → Fix CRITICAL and HIGH findings only

Quick Start: Full Audit

# Run all automated scanners from the project root
python3 <skill-dir>/scripts/scan_hardcoded_secrets.py .
python3 <skill-dir>/scripts/check_dependencies.py .
python3 <skill-dir>/scripts/check_network_security.py .
python3 <skill-dir>/scripts/analyze_storage_security.py .

# Outputs produced:
#   owasp_m1_secrets_scan.json
#   owasp_m2_dependencies_scan.json
#   owasp_m5_network_scan.json
#   owasp_m9_storage_scan.json

1. Prioritise by severity — fix CRITICAL and HIGH before release
2. For M3, M4, M6, M7, M8, M10 — see references/owasp_mobile_top_10_2024.md
3. Generate remediation plan with code examples and timeline

OWASP Mobile Top 10 (2024) — Quick Reference

Risk	Issue	Automated?	Key Check
M1	Hardcoded credentials	✅ scanner	API keys, tokens in source/config
M2	Vulnerable dependencies	✅ scanner	Outdated or unconstrained packages
M3	Weak authentication	Manual	Token storage, MFA, session expiry
M4	Input validation	Manual	SQL injection, XSS in WebViews, IDOR
M5	Insecure communication	✅ scanner	HTTP usage, missing cert pinning
M6	Privacy violations	Manual	PII in logs/analytics, excess permissions
M7	No binary protections	Manual	Missing --obfuscate, no root detection
M8	Misconfiguration	Manual	Debug flags in production, verbose logging
M9	Insecure storage	✅ scanner	Sensitive data in SharedPreferences
M10	Weak cryptography	Manual	MD5/SHA1/ECB usage, hardcoded keys

Understanding Scan Results

Severity	Meaning	Action
CRITICAL	Exploitable immediately	Fix now — do not release
HIGH	Significant vulnerability	Fix before release
MEDIUM	Should be addressed	Plan for next sprint
LOW	Best practice improvement	Address as time permits

Common False Positives

• M1: Test/example keys, placeholders like YOUR_API_KEY
• M2: Dev-only dependencies (linters, test tools)
• M5: HTTP for localhost/127.0.0.1 in development
• M9: Non-sensitive data in SharedPreferences (theme preference, language)

Always verify findings in context before flagging as vulnerabilities.

When NOT to Use

• Web application security audits — this skill is mobile/Flutter-specific
• Backend API or server security reviews
• As a substitute for professional penetration testing or a formal security audit
• Projects that do not use Flutter/Dart or pubspec.yaml

Reference Documentation

references/owasp_mobile_top_10_2024.md provides per-risk detail:

• Real-world attack scenarios and examples
• Flutter-specific vulnerability patterns (Dart code)
• Insecure vs secure code examples
• Platform-specific guidance (Android Keystore/NSC, iOS Keychain/ATS)
• Full mitigation strategies

Integration Points

Stage	Action
Pre-commit	Run scan_hardcoded_secrets.py as a lightweight secrets gate
Pull requests	Run all 4 scanners, post findings as PR comment
Release builds	Full audit including manual analysis for all 10 categories
Incident response	Run targeted scanner for the reported vulnerability category