Small command-line utility to retrieve the running Windows build's expiration date. It works by retrieving the SystemExpirationDate value from KUSER_SHARED_DATA.
It has been tested to work on Windows 10/11, and Windows 7 (with latest updates).
https://github.com/dhrdlicka/timebomb gave me the needed memory address on a silver platter, saving a bit of time from needing to find it in the winver.exe disassembly.