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+--- Thread: Can I configure HC with known chars in a password? (/thread-8527.html)
Can I configure HC with known chars in a password? - Ar76 - 08-01-2019
It's for a wpa2 hash. 8 chars upper, alphanumeric. I know the first char and I think the second char is one of 3 possibilities.
So can I configure HC with these known chars and is there an estimate on how long it will take to crack it?
RE: Can I configure HC with known chars in a password? - philsmd - 08-01-2019
see https://hashcat.net/wiki/doku.php?id=mask_attack
hashcat -m 2500 -a 3 -2 ABC -3 ?l?u?d hash.txt D?2?3?3?3?3?3?3
-1, -2, -3, -4 are the custom charsets (--custom-charset1 ... --custom-charset4)
-2 ABC means "A" or "B" or "C"
-3 ?l?u?d means either lowercase char or uppercase char or digits
D?2?3?3?3?3?3?3 means "D" is hard-coded, 2nd position is set of chars from --custom-charset2 (or short -2),
after 2nd position (3rd to 8th) is using charset from ?l?u?d
RE: Can I configure HC with known chars in a password? - Ar76 - 08-01-2019
(08-01-2019, 09:30 PM)philsmd Wrote: see https://hashcat.net/wiki/doku.php?id=mask_attack
hashcat -m 2500 -a 3 -2 ABC -3 ?l?u?d hash.txt D?2?3?3?3?3?3?3
-1, -2, -3, -4 are the custom charsets (--custom-charset1 ... --custom-charset4)
-2 ABC means "A" or "B" or "C"
-3 ?l?u?d means either lowercase char or uppercase char or digits
D?2?3?3?3?3?3?3 means "D" is hard-coded, 2nd position is set of chars from --custom-charset2 (or short -2),
after 2nd position (3rd to 8th) is using charset from ?l?u?d
That's confusing.
I know the first char is A and I think second is T. Could you give the command for this?
RE: Can I configure HC with known chars in a password? - undeath - 08-01-2019
He literally gave you the command for that. All you need to do is switch out the letters ABCD.
RE: Can I configure HC with known chars in a password? - Ar76 - 08-01-2019
(08-01-2019, 10:17 PM)undeath Wrote: He literally gave you the command for that. All you need to do is switch out the letters ABCD.
But how do you set D to the character A?
I only need uppercase. Also is this the same for oclhashcat?
RE: Can I configure HC with known chars in a password? - undeath - 08-01-2019
You replace the character D by the character A. Yes, it's that simple.
It's the same for oclhashcat but that's severely outdated and if something doesn't work you're on your own.
RE: Can I configure HC with known chars in a password? - Ar76 - 08-01-2019
(08-01-2019, 10:37 PM)undeath Wrote: You replace the character D by the character A. Yes, it's that simple.
It's the same for oclhashcat but that's severely outdated and if something doesn't work you're on your own.
So nobody uses oclhashcat anymore?
I thought oclhashcat worked on gpus and hashcat on cpus?
RE: Can I configure HC with known chars in a password? - undeath - 08-01-2019
That's not the case since 2016. Welcome to the future.
RE: Can I configure HC with known chars in a password? - Ar76 - 08-02-2019
So does HC generate password combinations on the fly when using masks as opposed to loading a text file of passwords. If so which is more efficient, I would imagine loading large password files in the order of Gb's would be very consuming on the vpu/memory?