04-11-2021, 01:56 AM
Your format is wrong for the mask. It appears from your description, that all 4 of those characters appear in the password, you just don't know where. In which case, the mask file need to be carefully crafted to include a special mask in any of the 10 positions, like so:
Ai1u,?1?1?1?1?a?a?a?a?a?a
Ai1u,?1?a?1?1?1?a?a?a?a?a
Ai1u,?1?1?a?1?1?a?a?a?a?a
etc.
However, even this will take a very long time unless you are lucky even for a fast hash. If you know more facts about the password, such as no special characters, then that will help.
See https://hashcat.net/wiki/doku.php?id=mask_attack
Ai1u,?1?1?1?1?a?a?a?a?a?a
Ai1u,?1?a?1?1?1?a?a?a?a?a
Ai1u,?1?1?a?1?1?a?a?a?a?a
etc.
However, even this will take a very long time unless you are lucky even for a fast hash. If you know more facts about the password, such as no special characters, then that will help.
See https://hashcat.net/wiki/doku.php?id=mask_attack