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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
47 lines
1.7 KiB
Markdown
47 lines
1.7 KiB
Markdown
# API Reference — Performing PLC Firmware Security Analysis
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## Libraries Used
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- **subprocess**: Execute binwalk for firmware extraction
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- **hashlib**: MD5/SHA256 firmware hashing
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- **re**: Credential and vulnerability pattern scanning
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- **pathlib**: Recursive file scanning of extracted firmware
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- **math**: Shannon entropy calculation
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## CLI Interface
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```
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python agent.py extract --firmware plc_fw.bin [--output /tmp/fw_extract]
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python agent.py metadata --firmware plc_fw.bin
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python agent.py creds --dir /tmp/fw_extract
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python agent.py vulns --dir /tmp/fw_extract
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python agent.py full --firmware plc_fw.bin [--output /tmp/fw_extract]
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```
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## Core Functions
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### `extract_firmware(firmware_file, output_dir)` — Binwalk extraction
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### `analyze_firmware_metadata(firmware_file)` — Hash and entropy analysis
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High entropy (>7.5) may indicate encryption or compression.
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### `scan_for_credentials(extract_dir)` — Hardcoded credential detection
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Patterns: passwords, default creds, private keys, API keys, connection strings.
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### `scan_for_vulnerabilities(extract_dir)` — Code vulnerability patterns
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Detects: command injection (system/popen), buffer overflow risk (strcpy/gets),
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insecure protocols (telnet/FTP), debug mode, backdoor indicators.
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### `full_analysis(firmware_file, output_dir)` — Complete analysis pipeline
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## Vulnerability Patterns
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| Pattern | Risk | Indicator |
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|---------|------|-----------|
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| command_injection | HIGH | system(), popen(), exec() |
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| buffer_overflow_risk | HIGH | strcpy, strcat, sprintf, gets |
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| insecure_protocol | MEDIUM | telnet, ftp, http:// |
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| debug_enabled | MEDIUM | debug=true, DEBUG_MODE |
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| backdoor_indicator | CRITICAL | backdoor, rootkit, reverse shell |
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## Dependencies
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```
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pip install binwalk
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```
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