using crunch makes NO sense here.
hashcat supports mask attack with -a 3 (see https://hashcat.net/wiki/?id=mask_attack), something like:
you can use --keyspace to see how large the total keyspace is.
then you calculate the 50 % percentage of it: 0.50 * keyspace (from the --keyspace output)
and then you use the -s (or long option: --skip) to skip the first 50 % of the keyspace.
Note that it is important that you use --keyspace with the correct options (like -m, -O, -S etc) that you used previously.
e.g.
hashcat supports mask attack with -a 3 (see https://hashcat.net/wiki/?id=mask_attack), something like:
Code:
hashcat -m 0 -a 3 -w 3 -O hashes.txt ?H?H?H?H?H?H?H?H
you can use --keyspace to see how large the total keyspace is.
then you calculate the 50 % percentage of it: 0.50 * keyspace (from the --keyspace output)
and then you use the -s (or long option: --skip) to skip the first 50 % of the keyspace.
Note that it is important that you use --keyspace with the correct options (like -m, -O, -S etc) that you used previously.
e.g.
Code:
hashcat -m 0 --keyspace dict.txt