IoT device penetration testing is an important means of discovering smart device security vulnerabilities. This article provides a systematic IoT penetration testing methodology and toolchain for 2026.

Testing Methodology

1. Information gathering: Firmware extraction, port scanning, device fingerprinting.
2. Firmware analysis: Use Binwalk, Firmware Analysis Toolkit to extract file systems, discover hardcoded credentials, encryption keys, and backdoors.
3. Communication protocol analysis: Use Wireshark, BetterCAP to analyze security of MQTT, HTTP, CoAP protocols.
4. Mobile application analysis: Decompile APK/iOS apps, discover insecure API calls and credential storage.
5. Hardware attacks: JTAG, UART, SWD interface debugging to extract device firmware and debug information.

Key Tools

Bleah (BLE device testing), RouterSploit (router testing), Attify Badge (hardware test suite), Wireshark (protocol analysis), Burp Suite (mobile app testing).

Conclusion

IoT penetration testing requires combined hardware and software security skills, an important capability direction for security professionals.