The target address (where the data should live in the flash memory). The payload (the actual code). A flag indicating the total number of blocks.
Decoding UF2: A Deep Dive into UF2 Decompilers and Firmware Reverse Engineering
For a quick look under the hood without installing heavy software, some web-based tools allow you to "dump" the contents of a UF2. These typically show you the metadata of each block, which is helpful for identifying which part of the memory the firmware is targeting. Step-by-Step: How to Analyze a UF2 File If you have a mystery UF2 file, follow this workflow: uf2 decompiler
Before we dive into tools, we have to manage expectations. In the world of software:
Ghidra features a powerful built-in C decompiler that does an impressive job of reconstructing logic flows from firmware. 3. Interactive Disassemblers (IDA Pro / Binary Ninja) The target address (where the data should live
turns machine code (0s and 1s) into Assembly language (human-readable instructions like MOV or PUSH ).
In this article, we’ll explore what UF2 files actually are, how "decompilation" works in the context of firmware, and the tools you can use to peel back the layers of these binary blobs. What is a UF2 File? Decoding UF2: A Deep Dive into UF2 Decompilers
Use uf2conv.py -i file.uf2 . This will tell you the Family ID , which identifies the chip (e.g., Raspberry Pi Pico, SAMD21, ESP32).