Every challenge is a part of the four education-board labs. Write the code, build the
Debug preset, and upload build/Debug/nfr27_ctf.elf to the challenge's bench. Your firmware runs on a simulated
STM32H743 board in Renode with the real lab parts (LED, BMI323 IMU, MCP3561R ADC, CAN bus). Pass every check
and the bench gives your team its flag; submit it on the scoreboard.