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hi i need your help to make a mask for a 12 character password with Uppercase Hex and digits but the thing is i know there is 4 digits in that password so 8 uppercase Hex
my question is how can u make the positions randomized?
12 character brute-force is very large ! the knowledge about the 8 uppercase A-F chars doesn't change that much. The number is still quite huge.

anyway, the answer is to use hashcat mask files together with policygen.py from PACK
?H?H?H?H?H?H?H?H?d?d?d?d

or

-1 ?dABCDEF ?1?1?1?1?1?1?1?1?d?d?d?d

You can report how much time it will take to crack that.
(05-26-2019, 11:33 PM)hashserious Wrote: [ -> ].

nope. that's not what op asked.