LSASS Dumping With Foreign Handles
You must be admin or system, blah blah blah.
This entire thing is predicated on another process having an open handle to LSASS, and you being able to open a handle to that process and duplicate their lsass' handle.
build with:
x86_64-w64-mingw32-gcc -c foreign_lsass.c -o foreign_lsass.x64.o
i686-w64-mingw32-gcc -c foreign_lsass.c -o foreign_lsass.x86.o
Sources: ngl please don't judge my old (and current) awful code
https://github.com/alfarom256/lsassdump
https://skelsec.medium.com/duping-av-with-handles-537ef985eb03