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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
1.6 KiB
1.6 KiB
API Reference: Detecting Supply Chain Attacks in CI/CD
GitHub Actions Workflow Parsing
import yaml
with open(".github/workflows/ci.yml") as f:
wf = yaml.safe_load(f)
# Key fields
wf["permissions"] # Workflow-level permissions
wf["jobs"]["build"]["steps"] # Step list
step["uses"] # Action reference (owner/repo@ref)
step["run"] # Shell script
step["env"] # Environment variables
Supply Chain Risk Patterns
| Risk | Pattern | Severity |
|---|---|---|
| Unpinned action | uses: owner/action@main |
CRITICAL |
| Mutable tag | uses: owner/action@v1 |
MEDIUM |
| Script injection | run: echo ${{ github.event.issue.title }} |
CRITICAL |
| Write permissions | permissions: write-all |
HIGH |
| Curl pipe bash | RUN curl | bash |
HIGH |
| Latest image tag | FROM image:latest |
MEDIUM |
Dependency Confusion Check
import requests
# Check if private package exists on public registry
resp = requests.get(f"https://registry.npmjs.org/{pkg}")
exists = resp.status_code == 200
resp = requests.get(f"https://pypi.org/pypi/{pkg}/json")
exists = resp.status_code == 200
Pinning Actions to SHA
# Bad: mutable reference
uses: actions/checkout@main
# Good: pinned to commit SHA
uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608
References
- GitHub Actions security hardening: https://docs.github.com/en/actions/security-guides
- StepSecurity: https://github.com/step-security/harden-runner
- Dependency confusion: https://medium.com/@alex.birsan/dependency-confusion-4a5d60fec610