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Full Version: which is the correct salt file format?
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I have a single password (00000000) and its' corresponding SHA256 hash (CAE201A8B791CA25B81B04876CACD62897883EE4C1907D2BD51D5671FEEC7562) and I am trying to find the salt. I expect that the salt is 8 bytes long and that each byte can vary from 00 to 09. So I have generated a salt file consisting in 8 byte combinations of 00-09 values. Examples:
.....and so on

Next, I fire up the hashcat command (trying to feed the salts to the single hash):

./hashcat-cli32.bin --bf-cs-buf=0 --bf-pw-min=8 --bf-pw-max=8 -m 1400 --salt-file=salt.txt --attack-mode=3 hash.txt

but I notice that the salts are NOT used:

Initializing hashcat v0.38 by atom with 8 threads and 32mb segment-size...

NOTE: press enter for status-screen

Added hashes from file ../cod.txt: 1 (1 salts)
Activating quick-digest mode for single-hash
Charset...: 0
Length....: 8
Index.....: 0/1 (segment), 1 (words), 0 (bytes)
Recovered.: 0/1 hashes, 0/1 salts
Speed/sec.: - plains, - words
Progress..: 1/1 (100.00%)
Running...: --:--:--:--
Estimated.: --:--:--:--
Started: Tue Feb 21 13:24:54 2012
Stopped: Tue Feb 21 13:24:55 2012

Wham am I doing wrong and how can I feed the salt file to the program?
Also how can I tell the program the format for the password and salt? (salt-password or password-salt)

Is the salt left or right side of the plaintext?
The quick answer is probably that since the mode 1400 don't use salts, the salt file does not get loaded and used. As for a solution for this, you could try oclHashcat-plus with rules that prepend or append your salts. However the problem would be the length so I don't have a real solution.
@atom: the plaintext represents only the salts (each per row):

root@tlc2:/root/samsung_xcover $ head -4 salt.txt

am I making a mistake here?

@mastercracker: the problem is that I don't possess a compatible GPU that would enable the use of oclHashcat... so I have to do it using hashcat...

thank you for your fast answers!
you said something about 8 byte salts but each line of your salt.txt has 16 byte.

please also not that hashcat is not able to do hex-salts - only oclHashcat-* can do that.
Yes, I used the hex format for the salt file (two characters for one byte). I didn't know that it does not work with hashcat...
Is there any way in which I could feed "binary" salts to hashcat? (more like a hybrid text-binary file, in which each line consists of 8 bytes with 0 to 9 ASCII values in it).

thank you
only 1 to 9
Thank you.
To verify that I understood you right, could you tell me if my statements are correct (inside the following image)?

looks good
Ok. I borrowed an AMD HD 5550 video card, so now I can use oclHashcat.
Please advise how the proper command line should look in order to crack this one:
- a SHA256 hash (such as CAE201A8B791CA25B81B04876CACD62897883EE4C1907D2BD51D5671FEEC7562)
- with an appended salt of Hex value 00 00 00 00 00 00 00 00 (8 bytes with 0 ASCII value)
- with decimal charset
- password length: 8 chars

How should I specify the above-mentioned salt to the program? I can only find the --hex-salt option, but no parameter to feed the salt...

thank you
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