UART Shell Privilege Escalation - KPMG CTF 2025 Writeup Challenge Overview Challenge: KPMG UART Shell Category: Hardware Objective: Extract the flag from a UART interface with restricted …

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A detailed walkthrough of solving a hardware security challenge involving UART interface exploitation. The solution required discovering a hidden 'devmode' command to escalate privileges from restricted user access to developer access, ultimately allowing the extraction of the flag. The writeup demonstrates how error messages can provide crucial hints and highlights common debug features in UART interfaces that can be exploited for unauthorized access.

UART Shell Privilege Escalation - KPMG CTF 2025 Writeup

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