Date: Sun, 10 Jan 2021 10:41:41 +0100 From: "Anton Berggren" <antonb@...e.se> To: <john-users@...ts.openwall.com> Subject: Sv: Cracking rar password with rar-opencl Thank you! I solved the issue. Upgraded Nvidia drivers and i noticed that nvopencl64.dll was changed. So i just copied over the new one and woila it worked again. Session completet with no passwords cracked. Guess its time to try something else to this? C:\Users\Anton\Downloads\john-1.9.0-jumbo-1-win64\run>john --format=rar --session=rockyou-cpu --wordlist=rockyou.txt rar.hashes Using default input encoding: UTF-8 Loaded 1 password hash (rar, RAR3 [SHA1 256/256 AVX2 8x AES]) Will run 4 OpenMP threads Press 'q' or Ctrl-C to abort, almost any other key for status 0g 0:05:12:16 34.25% (ETA: 09:51:33) 0g/s 269.9p/s 269.9c/s 269.9C/s nitawan..nissansentraexalta 0g 0:08:47:41 54.93% (ETA: 10:40:20) 0g/s 250.8p/s 250.8c/s 250.8C/s gatofedorento9..gatitasilvana 0g 0:15:32:09 DONE (2021-01-10 10:11) 0g/s 256.4p/s 256.4c/s 256.4C/s !!XineohP13...*.7¡Vamos!. Session completed C:\Users\Anton\Downloads\john-1.9.0-jumbo-1-win64\run>john --show rar.hashes 0 password hashes cracked, 1 left I might just give up on this. /Anton -----Ursprungligt meddelande----- Från: Solar Designer <solar@...nwall.com> Skickat: den 9 januari 2021 16:48 Till: john-users@...ts.openwall.com Ämne: Re: [john-users] Cracking rar password with rar-opencl On Sat, Jan 09, 2021 at 04:38:18PM +0100, Anton Berggren wrote: > Looks like my CPU is the only device being used now. > In previous session my GPU was used. We determined that GPU had better > performance. > > C:\Users\Anton\Downloads\john-1.9.0-jumbo-1-win64\run>john > --format=rar-opencl --session=rockyou --wordlist=rockyou.txt > rar.hashes Device 1: Intel(R) Core(TM) i5-4670K CPU @ 3.40GHz This suggests that something changed in your system setup. By default, JtR uses what it thinks is likely the fastest OpenCL device, and perhaps it was correctly choosing your NVIDIA GPU before. If it doesn't do that now, then perhaps your NVIDIA GPU is somehow not available now - e.g., uninstalled driver or something. If you continue with using the CPU, then you'd probably get slightly better speeds by not using OpenCL. Alexander
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