Your credit looks fine, and down payments aren't always required depending on the type of financing you are going for.
How do your $779/mo of payments break down?
What sales price range are you thinking of buying in?
Those answers will determine if your debt to income ratio is OK or not.
Where are you buying?
That answer, along with the previous answers, will determine if FHA or USDA financing would be an option for you or not - FHA (with down payment assistance), USDA, and VA financing are the most common ways to get 100% financing these days.
Free Mortgage Advice & Pre-Approvals (FHA, VA, USDA, Fannie, Freddie, Non-Prime, Construction, Renovation/Rehab, Commercial) since 2002
Located in Southern California and lending in all 50 states