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://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/48187.bsp