Easy way to beat Hashcat? Does oclHashcat support ASCII [NULL]

[epixoip]

you're missing the most important part, and that is the fact that the specific algorithm you are trying to crack is not supported.

-m 4500 is sha1_hex(sha1_hex(pass))

your algorithm is sha1_hex(sha1_raw(pass))

so -m 4500 will not work for what you are doing.