encrypted itunes backup help

[Lee1978]

No, if done well a hash algo is a one way function, and you can't tell anything about the input by looking at the output.

Thanks, althought thats quite discouraging. I attempted a sample itunes backup with a known password of seven lower case letters long, the password is in fact "hashcat". I suspect a dictionary attack would be useless since "hashcat" isn't actually a word, so i went for a brute force attack: ?l?l?l?l?l?l?l, according to hashcat i'm looking at over 4 years to run that attack. I wondered if i could reduce the time by perhaps strategically using vowels and consonants or some other trick, do you have any pointers?