> Which hash function did you use? There's nothing on the backend, just one hardcoded username and password. All it does is takes an sha1 of statically salted

> Which hash function did you use? There's nothing on the backend, just one hardcoded username and password. All it does is takes an sha1 of statically salted password, adds up all bytes and masks with 0xff. This yields 1-byte hash reductions, which are compared for equality.