I am hashcat newbie and I want to crack a hash :)
The answer is 1-15 (unknown) characters and it may contain 'a-z' 'A-Z' '0-9' and '_' . (A Twitter username)
How may I mask attack a hash with above information using hashcat?
The brute force (below) takes SO much time...:
hashcat -a 3 -m 1400 myhash