Thai green curry is very famous spicy curry in all over world. You can make this recipe at home by using all green curry spices or alternately you can buy readymade green curry past from a good glossary store.
There are a lot of Indian brands which are importing green curry paste for Thailand and selling in India like Real Thai and others.
You can use green curry paste for making different Thai recipes.
In Bangalore you can find all required green curry ingredients in vegetable market like paprika, galangal(Thai ginger) and lemon grass.