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

[radix]

Sure your hash type is right? I was able to recover A\0B\0C\0 without issue (plain sha1):

a9b1640a163865c75b3a97c7f927750297a1969a:$HEX[410042004300]

% cat dict| xxd
0000000: 4100 4200 4300 0a A.B.C..

% ./oclHashcat64.bin -m 100 test -a 3 -1 null.hcchr '?u?1?u?1?u?1'
...
a9b1640a163865c75b3a97c7f927750297a1969a:$HEX[410042004300]
...

cat null.hcchr| xxd
0000000: 00