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Message-ID: <CAP5RLbwtCrUocA3WK91XdKGLdB2Ddhge_09eWqwsrmiJCqd0-A@mail.gmail.com>
Date: Wed, 11 Dec 2013 14:04:25 -0500
From: Jacob Williams <malwarejake@...il.com>
To: john-users@...ts.openwall.com
Subject: nt-opencl failures
I'm having a few issues getting john (john-1.7.9-jumbo-7) set up with
opencl support. I am on an x64 system (ubuntu server) with 3x AMD 7970
GPUs.
I can't seem to get this to work at all. One curious error is the fact that
amdconfig lists all 3 devices while john only shows two. Any thoughts on
what I need to change/fix? No error messages makes it hard to troubleshoot.
root@...cracker:~# amdconfig --list-ada
* 0. 01:00.0 AMD Radeon HD 7900 Series
1. 02:00.0 AMD Radeon HD 7900 Series
2. 05:00.0 AMD Radeon HD 7900 Series
root@...cracker:/opt/tools/john-1.7.9-jumbo-7/run# ./john
--list=opencl-devices
No protocol specified
Platform #0 name: AMD Accelerated Parallel Processing
Platform version: OpenCL 1.2 AMD-APP (1348.4)
Device #0 name: Tahiti
Device vendor: Advanced Micro Devices, Inc.
Device type: GPU (LE)
Device version: OpenCL 1.2 AMD-APP (1348.4)
Driver version: 1348.4 (VM)
Global Memory: 3035 MB
Global Memory Cache: 16 KB
Local Memory: 32 KB (Local)
Max clock (MHz) : 925
Max Work Group Size: 256
Parallel compute cores: 32
Stream processors: 2048 (32 x 64)
Device #1 name: Tahiti
Device vendor: Advanced Micro Devices, Inc.
Device type: GPU (LE)
Device version: OpenCL 1.2 AMD-APP (1348.4)
Driver version: 1348.4 (VM)
Global Memory: 3035 MB
Global Memory Cache: 16 KB
Local Memory: 32 KB (Local)
Max clock (MHz) : 925
Max Work Group Size: 256
Parallel compute cores: 32
Stream processors: 2048 (32 x 64)
Device #2 name: AMD FX(tm)-8150 Eight-Core Processor
Device vendor: AuthenticAMD
Device type: CPU (LE)
Device version: OpenCL 1.2 AMD-APP (1348.4)
Driver version: 1348.4 (sse2,avx,fma4)
Global Memory: 15 GB
Global Memory Cache: 16 KB
Local Memory: 32 KB (Global)
Max clock (MHz) : 1400
Max Work Group Size: 1024
Parallel compute cores: 8
And here for the john runs. Clearly nt-opencl has a problem none of the
others do.
root@...cracker:/opt/tools/john-1.7.9-jumbo-7/run# ./john
--format=nt-opencl -dev=0 hashes.txt
No protocol specified
No password hashes loaded (see FAQ)
But you can see that john works fine when not using opencl.
root@...cracker:/opt/tools/john-1.7.9-jumbo-7/run# ./john hashes.txt
No protocol specified
Warning: detected hash type "lm", but the string is also recognized as "nt"
Use the "--format=nt" option to force loading these as that type instead
Warning: detected hash type "lm", but the string is also recognized as "nt2"
Use the "--format=nt2" option to force loading these as that type instead
Loaded 2185 password hashes with no different salts (LM DES [128/128 BS
XOP-16])
Remaining 1443 password hashes with no different salts
guesses: 0 time: 0:00:00:02 0.00% (3) c/s: 18808M trying: 496668N -
496840N
Session aborted
root@...cracker:/opt/tools/john-1.7.9-jumbo-7/run# ./john --format=nt
hashes.txt
No protocol specified
Loaded 1920 password hashes with no different salts (NT MD4 [128/128 X2
SSE2-16])
Remaining 1915 password hashes with no different salts
guesses: 0 time: 0:00:00:01 0.00% (3) c/s: 9233M trying: 7l1b - andrene
Session aborted
Any help is appreciated.
--
Jake Williams
CSRgroup Computer Security Consultants
@MalwareJake
malwarejake.blogspot.com
706-339-6713
FOR526 vLive with @sibertor:
http://bit.ly/1aU4KcR
SANS CDI FOR508 w/@...tlee -
http://bit.ly/1goYsJE
FOR610 at the CTI Summit
http://bit.ly/17WPEZ8
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