07-06-2015, 08:57 AM
If those are the actual commands you ran, then that would be your problem. "-3 a" defines custom charset 3 as the letter "a", perhaps you meant "-a 3"? You also do not need seven different commands. At the very least you'd use an hcmask file, but in this case you can simply just use increment mode.
Code:
cudaHashcat64 -a 3 -i -m 3000 lm-hash.txt ?a?a?a?a?a?a?a