$ cat writeup.md…
$ cat writeup.md…
HackTheBox
Task: ARM embedded system reads 8-digit passcode via UART, uses it as LCG seed to generate addresses into W25Q128 SPI flash, reads scattered flag bytes. Solution: reverse engineer LCG parameters from binary, brute-force 10^8 seed space with known-plaintext 'HTB{' prefix check against flash dump.
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