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mukul975
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Complete skill folder anatomy across all cybersecurity skills: - scripts/agent.py: 80-150 line Python agents using real libraries (impacket, boto3, azure-mgmt-*, kubernetes, pefile, yara, scapy, shodan, stix2, etc.) - references/api-reference.md: real API documentation with method signatures - LICENSE: MIT license for all skill folders
56 lines
1.6 KiB
Markdown
56 lines
1.6 KiB
Markdown
# API Reference: Detecting Supply Chain Attacks in CI/CD
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## GitHub Actions Workflow Parsing
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```python
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import yaml
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with open(".github/workflows/ci.yml") as f:
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wf = yaml.safe_load(f)
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# Key fields
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wf["permissions"] # Workflow-level permissions
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wf["jobs"]["build"]["steps"] # Step list
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step["uses"] # Action reference (owner/repo@ref)
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step["run"] # Shell script
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step["env"] # Environment variables
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```
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## Supply Chain Risk Patterns
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| Risk | Pattern | Severity |
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|------|---------|----------|
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| Unpinned action | `uses: owner/action@main` | CRITICAL |
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| Mutable tag | `uses: owner/action@v1` | MEDIUM |
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| Script injection | `run: echo ${{ github.event.issue.title }}` | CRITICAL |
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| Write permissions | `permissions: write-all` | HIGH |
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| Curl pipe bash | `RUN curl \| bash` | HIGH |
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| Latest image tag | `FROM image:latest` | MEDIUM |
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## Dependency Confusion Check
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```python
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import requests
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# Check if private package exists on public registry
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resp = requests.get(f"https://registry.npmjs.org/{pkg}")
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exists = resp.status_code == 200
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resp = requests.get(f"https://pypi.org/pypi/{pkg}/json")
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exists = resp.status_code == 200
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```
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## Pinning Actions to SHA
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```yaml
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# Bad: mutable reference
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uses: actions/checkout@main
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# Good: pinned to commit SHA
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uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608
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```
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### References
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- GitHub Actions security hardening: https://docs.github.com/en/actions/security-guides
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- StepSecurity: https://github.com/step-security/harden-runner
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- Dependency confusion: https://medium.com/@alex.birsan/dependency-confusion-4a5d60fec610
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