You don't need SBJson
for this.
There is a native class NSJSONSerialization
that does this much faster and without the need to import anything.
NSDictionary *result = [NSJSONSerialization JSONObjectWithData:[strResult dataUsingEncoding:NSUTF8StringEncoding] options:0 error:nil];
A better way would just be to use the NSData
straight from he request...
NSDictionary *result = [NSJSONSerialization JSONObjectWithData:theJSONDataFromTheRequest options:0 error:nil];