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mukul975 c21af3347e Complete folder anatomy for all 649 cybersecurity skills + update LICENSE to Mahipal

- 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

2026-03-11 00:22:12 +01:00

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API Reference — Performing PLC Firmware Security Analysis

Libraries Used

subprocess: Execute binwalk for firmware extraction
hashlib: MD5/SHA256 firmware hashing
re: Credential and vulnerability pattern scanning
pathlib: Recursive file scanning of extracted firmware
math: Shannon entropy calculation

CLI Interface

python agent.py extract --firmware plc_fw.bin [--output /tmp/fw_extract]
python agent.py metadata --firmware plc_fw.bin
python agent.py creds --dir /tmp/fw_extract
python agent.py vulns --dir /tmp/fw_extract
python agent.py full --firmware plc_fw.bin [--output /tmp/fw_extract]

Core Functions

`extract_firmware(firmware_file, output_dir)` — Binwalk extraction

`analyze_firmware_metadata(firmware_file)` — Hash and entropy analysis

High entropy (>7.5) may indicate encryption or compression.

`scan_for_credentials(extract_dir)` — Hardcoded credential detection

Patterns: passwords, default creds, private keys, API keys, connection strings.

`scan_for_vulnerabilities(extract_dir)` — Code vulnerability patterns

Detects: command injection (system/popen), buffer overflow risk (strcpy/gets), insecure protocols (telnet/FTP), debug mode, backdoor indicators.

`full_analysis(firmware_file, output_dir)` — Complete analysis pipeline

Vulnerability Patterns

Pattern	Risk	Indicator
command_injection	HIGH	system(), popen(), exec()
buffer_overflow_risk	HIGH	strcpy, strcat, sprintf, gets
insecure_protocol	MEDIUM	telnet, ftp, http://
debug_enabled	MEDIUM	debug=true, DEBUG_MODE
backdoor_indicator	CRITICAL	backdoor, rootkit, reverse shell

Dependencies

pip install binwalk

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