03-29-2013, 09:24 PM
Running some tests on the linkedin hash list, with oclhashcat-Plus4 in brute force mode (3), using --remove and --outfile-format=7, looking I see a lot of hashes cracked, in hash:plaintextPW:hexPW format, as expected. Then, suddenly, I see a line that's more than 40 characters with no colon, an even longer line with a colon after 80-(previous line's length) character, another 40 characters, what may be a password, and another 40 characters of hex.
Hex lines of length 42 without passwords continue for a bit, interrupted by lines with 0 to 2 characters, another couple long lines, and then a small set of lines of length 42. After several sets of that, the output file looks good again, nice and normal.
It looks like sometimes, perhaps after many hashes are cracked very quickly, the output format goes a little weird. Alternately, maybe a character combination does it?
This happens for longer brute forces with custom charsets as well, at least - I'm still tracking down some other issues.
Windows 7 64-bit SP1, fully patched.
ATI 13.1 Catalyst drivers, with an HD6950 card.
AMD 1090T Phenom II CPU.
clinfo
Hex lines of length 42 without passwords continue for a bit, interrupted by lines with 0 to 2 characters, another couple long lines, and then a small set of lines of length 42. After several sets of that, the output file looks good again, nice and normal.
It looks like sometimes, perhaps after many hashes are cracked very quickly, the output format goes a little weird. Alternately, maybe a character combination does it?
This happens for longer brute forces with custom charsets as well, at least - I'm still tracking down some other issues.
Code:
oclHashcat-plus64.exe --attack-mode=3 -m 100 --remove -1 ?d?l?u?s --outfile=linkedin.hash --outfile-format=7 linkedin.lst ?1?1?1?1?1?1Windows 7 64-bit SP1, fully patched.
ATI 13.1 Catalyst drivers, with an HD6950 card.
AMD 1090T Phenom II CPU.
clinfo
Code:
Number of platforms: 1
Platform Profile: FULL_PROFILE
Platform Version: OpenCL 1.2 AMD-APP (1084.4)
Platform Name: AMD Accelerated Parallel Processing
Platform Vendor: Advanced Micro Devices, Inc.
Platform Extensions: cl_khr_icd cl_amd_event_callback cl_amd_offline_devices cl_khr_d3d10_sharing cl_khr_d3d11_sharing
Platform Name: AMD Accelerated Parallel Processing
Number of devices: 2
Device Type: CL_DEVICE_TYPE_GPU
Device ID: 4098
Board name: AMD Radeon HD 6900 Series
Max compute units: 22
Max work items dimensions: 3
Max work items[0]: 256
Max work items[1]: 256
Max work items[2]: 256
Max work group size: 256
Preferred vector width char: 16
Preferred vector width short: 8
Preferred vector width int: 4
Preferred vector width long: 2
Preferred vector width float: 4
Preferred vector width double: 2
Native vector width char: 16
Native vector width short: 8
Native vector width int: 4
Native vector width long: 2
Native vector width float: 4
Native vector width double: 2
Max clock frequency: 900Mhz
Address bits: 32
Max memory allocation: 536870912
Image support: Yes
Max number of images read arguments: 128
Max number of images write arguments: 8
Max image 2D width: 16384
Max image 2D height: 16384
Max image 3D width: 2048
Max image 3D height: 2048
Max image 3D depth: 2048
Max samplers within kernel: 16
Max size of kernel argument: 1024
Alignment (bits) of base address: 2048
Minimum alignment (bytes) for any datatype: 128
Single precision floating point capability
Denorms: No
Quiet NaNs: Yes
Round to nearest even: Yes
Round to zero: Yes
Round to +ve and infinity: Yes
IEEE754-2008 fused multiply-add: Yes
Cache type: None
Cache line size: 0
Cache size: 0
Global memory size: 2147483648
Constant buffer size: 65536
Max number of constant args: 8
Local memory type: Scratchpad
Local memory size: 32768
Kernel Preferred work group size multiple: 64
Error correction support: 0
Unified memory for Host and Device: 0
Profiling timer resolution: 1
Device endianess: Little
Available: Yes
Compiler available: Yes
Execution capabilities:
Execute OpenCL kernels: Yes
Execute native function: No
Queue properties:
Out-of-Order: No
Profiling : Yes
Platform ID: 000007FEE0037FF8
Name: Cayman
Vendor: Advanced Micro Devices, Inc.
Device OpenCL C version: OpenCL C 1.2
Driver version: 1084.4 (VM)
Profile: FULL_PROFILE
Version: OpenCL 1.2 AMD-APP (1084.4)
Extensions: cl_khr_fp64 cl_amd_fp64 cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_3d_image_writes cl_khr_byte_addressable_store cl_khr_gl_sharing cl_ext_atomic_counters_32 cl_amd_device_attribute_query cl_amd_vec3 cl_amd_printf cl_amd_media_ops cl_amd_media_ops2 cl_amd_popcnt cl_khr_d3d10_sharing
Device Type: CL_DEVICE_TYPE_CPU
Device ID: 4098
Board name:
Max compute units: 6
Max work items dimensions: 3
Max work items[0]: 1024
Max work items[1]: 1024
Max work items[2]: 1024
Max work group size: 1024
Preferred vector width char: 16
Preferred vector width short: 8
Preferred vector width int: 4
Preferred vector width long: 2
Preferred vector width float: 4
Preferred vector width double: 2
Native vector width char: 16
Native vector width short: 8
Native vector width int: 4
Native vector width long: 2
Native vector width float: 4
Native vector width double: 2
Max clock frequency: 3214Mhz
Address bits: 64
Max memory allocation: 4294059008
Image support: Yes
Max number of images read arguments: 128
Max number of images write arguments: 8
Max image 2D width: 8192
Max image 2D height: 8192
Max image 3D width: 2048
Max image 3D height: 2048
Max image 3D depth: 2048
Max samplers within kernel: 16
Max size of kernel argument: 4096
Alignment (bits) of base address: 1024
Minimum alignment (bytes) for any datatype: 128
Single precision floating point capability
Denorms: Yes
Quiet NaNs: Yes
Round to nearest even: Yes
Round to zero: Yes
Round to +ve and infinity: Yes
IEEE754-2008 fused multiply-add: Yes
Cache type: Read/Write
Cache line size: 64
Cache size: 65536
Global memory size: 17176236032
Constant buffer size: 65536
Max number of constant args: 8
Local memory type: Global
Local memory size: 32768
Kernel Preferred work group size multiple: 1
Error correction support: 0
Unified memory for Host and Device: 1
Profiling timer resolution: 318
Device endianess: Little
Available: Yes
Compiler available: Yes
Execution capabilities:
Execute OpenCL kernels: Yes
Execute native function: Yes
Queue properties:
Out-of-Order: No
Profiling : Yes
Platform ID: 000007FEE0037FF8
Name: AMD Phenom(tm) II X6 1090T Processor
Vendor: AuthenticAMD
Device OpenCL C version: OpenCL C 1.2
Driver version: 1084.4 (sse2)
Profile: FULL_PROFILE
Version: OpenCL 1.2 AMD-APP (1084.4)
Extensions: cl_khr_fp64 cl_amd_fp64 cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_3d_image_writes cl_khr_byte_addressable_store cl_khr_gl_sharing cl_ext_device_fission cl_amd_device_attribute_query cl_amd_vec3 cl_amd_printf cl_amd_media_ops cl_amd_media_ops2 cl_amd_popcnt cl_khr_d3d10_sharing