Sat and scholarship to us

I am pretty confident that i will do well in SAT if i give the exam. i belong to a middle class family of India and incapable of paying the wholesome amounts of fees which are required to attend most us universities. I've heard of a few colleges who grant students 100% scholarship. I got pretty interested in Cornell University. I want to know the factuality about Cornell giving someone a large study grant based on family needs. Also, i would like to acknowledge the fact that i belong to a really small town that doesn't offer much educational or cultural opportunities. Practically, i don't have any big achievements. I am quit good at writing and general language (based upon the regional relativeness), i can play guitar and sing a bit, and i am sure to get a good % in high school. but I've got no certificates to show extracurricular talents. can someone Pleeeeeeeeaaaaaaaaaaaase tell me if it is practical and safe for me to apply for financial aid at a university like Cornell?