Let’s assume you have a file named firmware.uf2 from an unknown device. Here is the professional reverse engineering process.
The easiest method for many: Flash the UF2 onto a development board, then use a debugger (like openocd or pyOCD) to dump the entire flash memory back to a .bin file. uf2 decompiler
Result: You now have firmware.bin – raw machine code. But raw code is useless without understanding it. Let’s assume you have a file named firmware
UF2 (USB Flashing Format) is a compact, block-based binary container format designed to simplify flashing firmware to microcontrollers over USB mass-storage. It maps fixed-size 512-byte blocks to target device flash addresses, includes metadata (family IDs, magic values, flags), and supports drag-and-drop flashing via a virtual FAT filesystem. UF2 (USB Flashing Format) is a compact, block-based
Some UF2 files contain blocks for different memory regions (e.g., flash at 0x00000000 and a small patch to RAM at 0x20000000). Ghidra supports memory overlays or you can split the binary into multiple files.
Use the --serial output from uf2conv.py to see address ranges:
uf2conv.py firmware.uf2 --info
Then load each contiguous chunk at its correct address in Ghidra.