Combining a custom hex charset with the standard charsets
#1
Hi,

I am trying to learn how to crack hashes of words containing the Swedish characters "åäöÅÄÖ". Using this forum I have found most pieces of the puzzle. I have successfully worked myself up from cracking a single Swedish character using a custom hex charset to cracking the word/name "Älvsjö" which contains regular letters combined with two Swedish characters in known positions. The problem is that I so far have not been able to figure out how to crack the same word/name "Älvsjö" when I pretend that the positions and numbers of the Swedish characters are unknown.

I learned how to create the custom hex charset from another post here. I started with getting the hex values using this tool. They are:

å = c3a5 
ä = c3a4 
ö = c3b6 
Å = c385 
Ä = c384 
Ö = c396

From that I conclude that the custom hex charset I need is "-1 c3 -2 a5a4b6858496".

I also hashed "Älvsjö" using the this MD5 tool and the output is "3454a37f3585a38f2816c1fd4247f2b0".

So, in the scenario where I know the positions of the two Swedish characters the Hashcat command becomes "hashcat64.exe 3454a37f3585a38f2816c1fd4247f2b0 -m 0 --hex-charset -1 c3 -2 a5a4b6858496 -a 3 ?1?2?a?a?a?a?1?2 -O". This works. 

To the problem. To crack the same MD5 hash "3454a37f3585a38f2816c1fd4247f2b0" pretending to not know how many Swedish characters and the positions of them I somehow need to test both the custom hex charset and the standard charset "?a" for every position in the assumed length of the hashed word. I need to nestle the charsets or similar...

What am I doing wrong? How would the mask look? If I need to change the custom hex charset, to what do I change it too? Is there a better approach to this? 

I am using Hashcat version 5.1.0.

Thanks for your help!
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Messages In This Thread
Combining a custom hex charset with the standard charsets - by nevermind - 01-31-2019, 06:10 PM