hashcat Forum › Deprecated; Previous versions › Old oclHashcat Support v
Can't reverse known hash ?

Threaded Mode
Can't reverse known hash ?
omegear Offline
Junior Member
**
Posts: 12
Threads: 2
Joined: Aug 2015
#11
08-14-2015, 02:09 AM
No matter how long does it take, even weeks, I'll be running this because I really need this password recover.

Code:
cudaHashcat64.exe -a 3 -m 400 -i --increment-min=3 --increment-max=12 hash.txt

So this is going to test from 3 to 12 character-lenght all lowercase character right ?
Find
omegear Offline
Junior Member
**
Posts: 12
Threads: 2
Joined: Aug 2015
#12
08-14-2015, 02:10 AM
The wiki isn't super clear about that specific case...
Find
omegear Offline
Junior Member
**
Posts: 12
Threads: 2
Joined: Aug 2015
#13
08-14-2015, 02:12 AM
or am I running this in the void ?

Code:
Session.Name...: cudaHashcat
Status.........: Running
Input.Mode.....: Mask (?1?2?2?2?2?2) [6]
Hash.Target....: $P$BOr7VkRzwGegJwqBIts2TmUxefdgPs1
Hash.Type......: phpass, MD5(Wordpress), MD5(phpBB3), MD5(Joomla)
Time.Started...: Thu Aug 13 23:33:49 2015 (2 hours, 31 mins)
Time.Estimated.: Fri Aug 14 04:31:28 2015 (2 hours, 21 mins)
Speed.GPU.#1...:   483.1 kH/s
Recovered......: 0/1 (0.00%) Digests, 0/1 (0.00%) Salts
Progress.......: 522240000/3748902912 (13.93%)
Rejected.......: 0/522240000 (0.00%)
Restore.Point..: 8355840/60466176 (13.82%)
HWMon.GPU.#1...: 96% Util, 72c Temp, N/A Fan
Find
omegear Offline
Junior Member
**
Posts: 12
Threads: 2
Joined: Aug 2015
#14
08-14-2015, 02:24 AM
I don't understand the point of the mask.
It's clearly efficient when you know the lenght of the password you want to crack but when you don't, why using mask then ?

If the password is lolpenis for example and in my cmd I write ?l?l?l?l?l?l?l?l?l he obviously won't find it, right ? (seen on the wiki) so what is the point of masking on an unknown password ?
Find
omegear Offline
Junior Member
**
Posts: 12
Threads: 2
Joined: Aug 2015
#15
08-14-2015, 02:50 AM
[Image: aHR0cDovL2kuaW1ndXIuY29tL3FUOTZQLmdpZg==.jpg]
Find
mastercracker Offline
Senior Member
****
Posts: 621
Threads: 57
Joined: May 2010
#16
08-15-2015, 11:02 PM (This post was last modified: 08-15-2015, 11:04 PM by mastercracker.)
The point of a mask is telling what is the keyspace you are willing to cover. People tend to use specific patterns so instead of using bruteforce with every possible characters for every position of the password, you can specify for each position what characters to try. For example when facing the constraint of creating a password of at least 8 characters and at least one digit, they will create a password length 8 with the digit at the last position. Also most people use only lowercase so you can try:

Code:
?l?l?l?l?l?l?l?d

Try it and compare how much time it would take compared to the full keyspace bruteforce: ?a = lowercase + uppercase + symbol + numeric

Code:
?a?a?a?a?a?a?a?a

That's why we use masks: reduce keyspace while covering the most likely possibilities.
Find