Hardware

Introduction When you compile C code for an ARM microcontroller, the compiler translates your high-level code into machine instructions. Reverse engineering tools like Binary Ninja, Ghidra, radare2, etc. can decompile those instructions back into pseudo-C code. This guide shows you how to read that decompiled output and understand what’s happening at the hardware level. The Example: STM32 LED Blink We’ll use a simple LED blink program for an STM32F103xx (ARM Cortex-M3) microcontroller, that I have published in another repo: https://github.com/Flock137/stm32_blinky_baremetal ...

Introduction I chose to start my hardware hacking journey with an attempt to live debugging a piece of hardware. As I am waiting for the necessary parts I need to arrive, I did some emulations of the STM32, so I might have the binary ready to flash the binary into the hardware by the times the parts arrive. As weird as it is to write about a failed attempt on a blog post, this is written to at least temporary record what I did, for potential future references. The code for this attempt would not be released, as I definitely do not want to embarrase myself. ...