What is the default bruteforce charset?

[epixoip]

Default values are found here: http://hashcat.net/wiki/doku.php?id=oclh...ult_values

So for -a 3:

-1 ?l?d?u -2 ?l?d -3 ?l?d*!$@_ ?1?2?2?2?2?2?2?3?3?3?3?d?d?d?d

For "all symbols" you'd use the ?a character class with an appropriate mask, e.g. ?a?a?a?a?a?a?a?a for 95^8. See http://hashcat.net/wiki/doku.php?id=mask_attack#masks