Who Might Be Able to Get a Bad Credit Cash Loan?

I imagine that for some people it is just not possible to get a loan, unless it is from a loan shark or someone like that. However, I have heard that there is something called a bad credit cash loan, and I am wondering who would qualify for this sort of loan and what it entails. I had some money problems a while back and it messed up my credit. Although my credit is improving, I am still having trouble getting the loan that I need right now, so I am trying to find out if this might be an option available to me.