The good thing about the GMAT is that it helps compensate for a lower than desired GPA. Your high GMAT shows that you are academically intelligent.
The only other way to get around a low GPA is to explain the situation on your application essays which you will need to do as well. I think that because you have numerous failing grades, this will be a crucial part of your application. Obviously you should try to explain them in a way that puts you in the best possible light, but it is important to be honest as well. You are going to have to convince admission boards that you have overcome whatever obstacle it was that was holding you back and that you have learned from that situation.
I don't know much about international schools, but I think that you are targeting appropriate U.S. schools (schools ranked anywhere between 20-40). Best of luck.
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