Tag Archive: UART

Mar 23 2026

Building a Secure Boot Chain on the STM32F411 (Part 2): Validation, Hidden Triggers, and Reverse Engineering

Author: Shafeeque Olassery Kunnikkal | Category: IoT, IoT Security, STM32F411 | Leave a Comment

Part 2 of this STM32F411 secure boot lab focuses on fail-closed validation, an interrupt-driven hidden UART trigger inside the payload, and preparing the firmware for binary diffing and reverse engineering in Ghidra.

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May 8 2025

๐Ÿš€ My First AI-Coauthored Blog with ChatGPT

Author: Shafeeque Olassery Kunnikkal | Category: Cyber Security, IoT, Penetration Testing, STM32F411 | 2 Comments

This post is the result of my first deep, hands-on experience generating a full technical article using ChatGPT!Together, we explored how to implement a challenge-response system on STM32, refine C code, modularize functions, fix compiler warnings, and prepare polished documentation. Along the way, I encountered not just technical hurdles (like sandbox download issues, expired file…..

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STM32F411CEU6 Interrupts Phishing STM32F411CE Grove - Light Sensor v1.2 Anavi Sensors HTU21D Computer Forensics XSS Information Security BME280 GDB Reverse Engineering GPS Dashboard Firmware Dumping CVE-2018-1528 IoT Reflected XSS Grove - Rotary Angle Sensor(P) Grove - Ultrasonic Ranger Binary Diffing Mbed TLS Email Fraud SGP40 Grove - Buzzer Black Pill CVE-2018-5798 ChatGPT Adafruit BlackPill Social Engineering Grove LED Bar v2.0 GrovePi+ zero-knowledge testing E-Books Education CubicSDR Proximity Sensor Cyber Security Degree Arduino Embedded Career Options LearningJourney partial-knowledge testing Hardware Hacking Cyber Security

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