crank shaft pully bolt on 1998 Mitsubishi Montero Sport

how do i hold the crank shaft to get the crankshaft pully off

Asked by for the 1998 Mitsubishi Montero Sport
Often at the rear of the engine you may have an access shield that allows you to put a small pry bar in to engage fly wheel teeth or a flex plate bolt. If that fails you may be able to put a serpentine belt around the crank pulley grooves and clamp down hard on the belt with a large slip joint pliers.
I have several special tools designed specifically to remove crank pulley particularly if the pulley has what looks like bicycle spokes.