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Date: Sun, 5 Jan 2020 17:04:34 -0300
From: Ricardo CYRYLZ MIESZKO <cyrylz.mieszko@...il.com>
To: john-users@...ts.openwall.com
Subject: opencl not finds the password. In CPU it founds.
Hi.
When I use john with wordlist and --format=dmg-opencl or
--format=7z-opencl it can't find the password. If I use without the opencl
it finds.
I noted that error and I can't find a solution fot that: "Error creating
binary cache file: No such file or directory"
Much probably the binary creation error is the problem. How to solve it ?
I can't even find this error message in the John sources. That's weird. It
comes from some dependency maybe ?
I'm running on macOS Catalina, but the problem occurs in older macOS too.
Here is the opencl version:
0:00:00:00 - Building kernel and caching binary
0:00:00:00 - OpenCL LWS: 64, GWS: 8192 (both auto-tuned) (128 blocks)
0:00:00:00 - Hash type: 7z-opencl, 7-Zip (min-len 0, max-len 23)
0:00:00:00 - Algorithm: SHA256 AES OpenCL
0:00:00:00 - Will reject candidates longer than 69 bytes
0:00:00:00 - Candidate passwords will be buffered and tried in chunks of
8192
0:00:00:00 Proceeding with wordlist mode
0:00:00:00 - Wordlist file: dic.lst
0:00:00:00 - memory mapping wordlist (1353024 bytes)
0:00:00:00 - No word mangling rules
Device 3: AMD Radeon Pro 560X Compute Engine
Using default input encoding: UTF-8
Loaded 1 password hash (7z-opencl, 7-Zip [SHA256 AES OpenCL])
Cost 1 (iteration count) is 524288 for all loaded hashes
Cost 2 (padding size) is 7 for all loaded hashes
Cost 3 (compression type) is 1 for all loaded hashes
Error creating binary cache file: No such file or directory
Press 'q' or Ctrl-C to abort, almost any other key for status
0:00:00:00 Starting a new session
0:00:00:00 Loaded a total of 1 password hash
0:00:00:00 Cost 1 (iteration count) is 524288 for all loaded hashes
0:00:00:00 Cost 2 (padding size) is 7 for all loaded hashes
0:00:00:00 Cost 3 (compression type) is 1 for all loaded hashes
0:00:00:00 Command line: john --format=7z-opencl --pot=passwd.pot
--session=dic --wordlist=dic.lst hash.sec
0:00:00:00 - UTF-8 input encoding enabled
0:00:00:00 - Passwords will be stored UTF-8 encoded in .pot file
0:00:00:00 Device 3: AMD Radeon Pro 560X Compute Engine
0:00:00:00 - Building kernel and caching binary
0:00:00:00 - OpenCL LWS: 64, GWS: 8192 (both auto-tuned) (128 blocks)
0:00:00:00 - Hash type: 7z-opencl, 7-Zip (min-len 0, max-len 23)
0:00:00:00 - Algorithm: SHA256 AES OpenCL
0:00:00:00 - Will reject candidates longer than 69 bytes
0:00:00:00 - Candidate passwords will be buffered and tried in chunks of
8192
0:00:00:00 Proceeding with wordlist mode
0:00:00:00 - Wordlist file: dic.lst
0:00:00:00 - memory mapping wordlist (1353024 bytes)
0:00:00:00 - No word mangling rules
Warning: Only 5696 candidates left, minimum 8192 needed for performance.
0:00:00:00 - No stacked rules
0g 0:00:01:11 DONE (2020-01-05 15:51) 0g/s 652.8p/s 652.8c/s 652.8C/s
[xxxxxxx REMOVED]
Session completed
---------------------
==> Passwords Found ?
---------------------
0 password hashes cracked, 1 left
----------------------
Here is without opencl:
0:00:00:00 - Configured to use otherwise idle processor cycles only
0:00:00:00 - Will reject candidates longer than 84 bytes
0:00:00:00 - Candidate passwords will be buffered and tried in chunks of 4
0:00:00:00 Proceeding with wordlist mode
0:00:00:00 - Wordlist file: dic.lst
0:00:00:00 - memory mapping wordlist (1353024 bytes)
0:00:00:00 - No word mangling rules
0:00:00:00 - No stacked rules
0:00:06:02 + Cracked x.7z
0:00:06:02 Session completed
Using default input encoding: UTF-8
Loaded 1 password hash (7z, 7-Zip [SHA256 128/128 SSE4.1 4x AES])
Cost 1 (iteration count) is 524288 for all loaded hashes
Cost 2 (padding size) is 7 for all loaded hashes
Cost 3 (compression type) is 1 for all loaded hashes
Press 'q' or Ctrl-C to abort, almost any other key for status
0:00:00:00 Starting a new session
0:00:00:00 Loaded a total of 1 password hash
0:00:00:00 Cost 1 (iteration count) is 524288 for all loaded hashes
0:00:00:00 Cost 2 (padding size) is 7 for all loaded hashes
0:00:00:00 Cost 3 (compression type) is 1 for all loaded hashes
0:00:00:00 Command line: john --format=7z --pot=passwd.pot --session=dic
--wordlist=dic.lst hash.sec
0:00:00:00 - UTF-8 input encoding enabled
0:00:00:00 - Passwords will be stored UTF-8 encoded in .pot file
0:00:00:00 - Hash type: 7z, 7-Zip (min-len 0, max-len 28)
0:00:00:00 - Algorithm: SHA256 128/128 SSE4.1 4x AES
0:00:00:00 - Configured to use otherwise idle processor cycles only
0:00:00:00 - Will reject candidates longer than 84 bytes
0:00:00:00 - Candidate passwords will be buffered and tried in chunks of 4
0:00:00:00 Proceeding with wordlist mode
0:00:00:00 - Wordlist file: dic.lst
0:00:00:00 - memory mapping wordlist (1353024 bytes)
0:00:00:00 - No word mangling rules
0:00:00:00 - No stacked rules
[****REMOVED] (x.7z)
1g 0:00:05:56 DONE (2020-01-05 17:01) 0.002804g/s 8.481p/s 8.481c/s
8.481C/s [****REMOVED]
Use the "--show" option to display all of the cracked passwords reliably
Session completed
---------------------
==> Passwords Found ?
---------------------
x.7z:**************** [passwd removed]
----------------------
1 password hash cracked, 0 left
----------------------
Regards.
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