i have identified some DOS code, this code will force your computer to hang in a loop, no escape:
; Danger: do NOT run this code on a personal computer, it could freeze your computer until you do a forced shutdown .Lhang: ; loop start, compile this code and use another program to inject it to the target program. cli ; clear the interupt buffer hlt ; halt the CPU jmp .Lhang ; jump back and loop