Yes it is possible.
You can basically train every bodypart using dumbells, let me give some examples:
Legs: Squats and lunges. You can start doing squats and lunges to train your legs, once this gets to easy, you can add resistance by holding dumbells in your hands while performing the exercises.
Arms: Various curls and extension movements. To train your arms, you can do different variations of bicep curls and tricep extensions, while adding weight using the dumbells to increase resistance.
Abs: Sit-up variations. You can do the same here, start with regular sit-ups, and when these get to easy, start adding weight by holding a dumbell in front of your chest, or behind your head to make it harder.
By now you've probably found the pattern in this. For the most part you can start out with small resistance and use dumbells to increase it overtime, making your muscles stronger and bigger.
Consistency is key here. You won't get ripped over night, you'll have to stick with it for at least half a year to get notable differences in your physique, but as you might know, most of these "ripped" guys have been training for years.
Hope it helps!