05-02-2013, 02:44 PM
The MD5 hash of "zar2Hh" should be cracked in a short time. For the MD5(unix), it will take much longer (and don't forget to use -m 500 instead of -m 0). It would be easier if you use an adapted mask like ?l?l?l?d?u?l. However in a real case scenario, you don't know that so you go for the highest probabilities, meaning that you start with first letter upper or lower case, followed by a bunch of lowercase letter and maybe finishing by 1-4 numbers.