So I’ve been holding onto this neat little gem of a .bsp that has four bytes very close to the end of the file that controls the memory allocator. See above picture. Works on all supported operating systems last I checked (so Linux, Windows, and macOS), even after a few years.

Download ~ https://github.com/offensive-security/exploitdb-bin-sploits/raw/master/bin-sploits/48187.bsp