Yes, them use md5, the auroracoin forum use the traditional forum salt that is more hard to decrypt.

but with a good pay decoder with trillion hashes decode it no can be hard.

examples (hashes get from freecoinworld):
30fca77cebf16fe3c5b5b4db4371dee4  -  cinta3segi
842df9fecdc99ad5aea6deb7ab117ae0 - me4ta12345