Six pack is made in the kitchen not in the gym so they say.

But anyway its alot of hard work i didn't have to lose much bodyfat to get six pack because i was already slim.

But you need to go on a diet and if you have to have fatty foods from time to time make sure its good fat like fish ect.

Bicycle crunches are 200 percent or 250 percent more effective than normal crunches so make sure you do them just type bicycle crunches in google and your find a video explaining how to do it, you also need to do your lower abs basically laying flat down on your back with your legs straight and raising them off the floor about 14 or 12 inches then lowering them so your feet are almost touching the floor and repeat etc.

Also a stability ball would do you good there very cheap and you can do so many ab workouts on that its amazing. Make sure you also do your cardio atleast 30 mins a day like running, skipping etc and then you should be on your way it could take 2 months like it did with me, or it could take longer depends on the person but good luck anyway bro.