How To: Hashcat 3.0 on a 32-bit Linux VM

[BeanBagKing]

As with most of the problems I run into, I'm sure there's a better way.

As soon as I saw the release announcement for hashcat 3, I tried it in my nearest VM, a 32-bit The-Distribution-Which-Does-Not-Handle-OpenCL-Well (Kali) machine. Lacking OpenCL drivers, I got a segmentation fault. I found that Intel doesn't offer 32-bit linux OpenCL drivers, and since my VM lacked a video card, that was about it. I asked on IRC and got pretty much the same answer; use a 64-bit VM, or a physical machine with a card.

I started looking at what was offered in the repository, and POCL (Portable Computing Language library) seemed to -almost- work. It was distributed with 64-bit libraries though. After a few days on and off of fooling with dependencies, I seem to have it working. I present to you "How to run hashcat 3 on a 32-bit VM... mostly..."

http://www.nullsec.us/hashcat-3-0-on-a-32-bit-linux-vm/

Remove clang and llvm versions versions 3.6 and 3.7. I'm not sure why, but in my experimenting, pocl seemed very picky about the versions of these libraries.

Code:

apt remove clang*  
apt remove llvm*  
apt-get autoremove -y  

Add the correct versions and path clang (which is in llvm's bin folder)

Code:

apt install clang-3.8  
apt install libclang-3.8-dev  
vim .bashrc -> Add clang to path "PATH=$PATH:/usr/lib/llvm-3.8/bin"  
   Open a new terminal and test with "clang --version", should return 3.8

Install a few more dependencies

Code:

apt install libhwloc-dev  
apt install ocl-icd-dev  
apt install ocl-icd-opencl-dev  

These dependencies that should already be there, make sure though

Code:

apt install pkg-config  
apt install autotools-dev  
apt install cmake  
apt install make  
apt install libltdl3-dev  

Git pocl, make, install

Code:

git clone https://github.com/pocl/pocl  
cd pocl  
./autogen.sh
./configure
make  
make install  

Now, you'll have to use --force, or you get warnings that you are not using a native Intel OpenCL runtime

Code:

root@The-Distribution-Which-Does-Not-Handle-OpenCL-Well (Kali):~/Desktop/hashcat-3.00# ./hashcat32.bin -b hashcat (v3.00-1-g67a8d97) starting in benchmark-mode...
OpenCL Platform #1: The pocl project
Device #1: WARNING: Not a native Intel OpenCL runtime, expect massive speed loss You can use --force to override this but do not post error reports if you do so
Device #1: pthread-Intel(R) Core(TM) i5-3470 CPU @ 3.20GHz, skipped

ERROR: No devices found/left

but if you do, everything should work... mostly...

Code:

root@The-Distribution-Which-Does-Not-Handle-OpenCL-Well (Kali):~/Desktop/hashcat-3.00# ./hashcat32.bin --force -b hashcat (v3.00-1-g67a8d97) starting in benchmark-mode...
OpenCL Platform #1: The pocl project
Device #1: pthread-Intel(R) Core(TM) i5-3470 CPU @ 3.20GHz, 1513/1513 MB allocatable, 1MCU

Hashtype: MD4
Speed.Dev.#1.: 15532.5 kH/s (109.65ms)
[... SNIP ...]
Hashtype: Juniper IVE
Speed.Dev.#1.: 6841 H/s (98.83ms)
error: Explicit gep type does not match pointee type of pointer operand (Producer: 'LLVM3.8.0' Reader: 'LLVM 3.8.0')

[atom]

Thanks! About that one error, you should post it to the pocl project. They are pretty good and fast in fixing their own bugs, if it is. Also possible it's a LLVM problem.

[kali20a]

Thanks a lot .. but will the same method work on a 64-bit The-Distribution-Which-Does-Not-Handle-OpenCL-Well (Kali) vm?

[kiara]

As with most of the problems I run into, I'm sure there's a better way.

so i tried it my self with a VM (virtual box) The-Distribution-Which-Does-Not-Handle-OpenCL-Well (Kali) linux 2, 64bit 

followed the guide and it failed on the "make" command

Code:

pocl_llvm_api.cc:32:41: fatal error: clang/CodeGen/CodeGenAction.h: No such file or directory
compilation terminated.
Makefile:2816: recipe for target 'libpoclllvm_la-pocl_llvm_api.lo' failed
make[5]: *** [libpoclllvm_la-pocl_llvm_api.lo] Error 1
make[5]: Leaving directory '/root/Downloads/pocl/lib/CL'
Makefile:2835: recipe for target 'all-recursive' failed
make[4]: *** [all-recursive] Error 1
make[4]: Leaving directory '/root/Downloads/pocl/lib/CL'
Makefile:916: recipe for target 'all' failed
make[3]: *** [all] Error 2
make[3]: Leaving directory '/root/Downloads/pocl/lib/CL'
Makefile:470: recipe for target 'all-recursive' failed
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory '/root/Downloads/pocl/lib'
Makefile:644: recipe for target 'all-recursive' failed
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory '/root/Downloads/pocl'
Makefile:530: recipe for target 'all' failed
make: *** [all] Error 2

Code:

clang --version
clang version 3.8.0-2 (tags/RELEASE_380/final)
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/lib/llvm-3.8/bin

i am sorry it was my bad, i did not install apt install libclang-3.8-dev so i rapidly do the whole proccess all over again to make sure i did not skip anything
BUT its still not working

Code:

/Downloads/hashcat-3.10# ./hashcat64.bin --force -b -d 1
hashcat (v3.10) starting in benchmark-mode...

OpenCL Platform #1: The pocl project
====================================
- Device #1: pthread-Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz, 2967/2967 MB allocatable, 2MCU

OpenCL Platform #2: Mesa, skipped! No OpenCL compatible devices found

Illegal instruction

i am giving 2 cpu cores to my vm 

[BeanBagKing]

kali20a - Regarding The-Distribution-Which-Does-Not-Handle-OpenCL-Well (Kali) 64, use the Intel OpenCL drivers https://software.intel.com/en-us/article...cl-drivers - down near the bottom, look for 16.1.1 for Ubuntu. When you install it, you'll likely get an error about missing dependency (can't remember which one, ignore it).

kiara - Honestly, I got this working because I'm stubborn and encountered a problem. I learned a few things, but it's flaky and kind of a pain. I suggest moving to 64bit or downgrading to HC 2. That said, if you just want to solve the problem for the sake of solving it, HC 3 is recognizing your processor. I would fiddle with the --force, -d and -D flags. I also did all my testing on 2016.1, not The-Distribution-Which-Does-Not-Handle-OpenCL-Well (Kali) 2 Sana. That might make a difference.

[kiara]

kali20a - Regarding The-Distribution-Which-Does-Not-Handle-OpenCL-Well (Kali) 64, use the Intel OpenCL drivers https://software.intel.com/en-us/article...cl-drivers - down near the bottom, look for 16.1.1 for Ubuntu. When you install it, you'll likely get an error about missing dependency (can't remember which one, ignore it).

kiara - Honestly, I got this working because I'm stubborn and encountered a problem. I learned a few things, but it's flaky and kind of a pain. I suggest moving to 64bit or downgrading to HC 2. That said, if you just want to solve the problem for the sake of solving it, HC 3 is recognizing your processor. I would fiddle with the --force, -d and -D flags. I also did all my testing on 2016.1, not The-Distribution-Which-Does-Not-Handle-OpenCL-Well (Kali) 2 Sana. That might make a difference.

hmm, i am on a 64 bit.. (unless u ment 32bit) , and i did try --force and -d -D
i think i will stick with the old HC 2

[kali20a]

kali20a - Regarding The-Distribution-Which-Does-Not-Handle-OpenCL-Well (Kali) 64, use the Intel OpenCL drivers https://software.intel.com/en-us/article...cl-drivers - down near the bottom, look for 16.1.1 for Ubuntu. When you install it, you'll likely get an error about missing dependency (can't remember which one, ignore it).

Thanks a lot BeanBagKing,

Works like a charm ! I upgraded my HC to v3.10 then installed the Intel OpenCL then the pocl .. now HC works fine even without using the --force

[nim]

kali20a - Regarding The-Distribution-Which-Does-Not-Handle-OpenCL-Well (The-Distribution-Which-Does-Not-Handle-OpenCL-Well (Kali)) 64, use the Intel OpenCL drivers https://software.intel.com/en-us/article...cl-drivers - down near the bottom, look for 16.1.1 for Ubuntu. When you install it, you'll likely get an error about missing dependency (can't remember which one, ignore it).

Thanks a lot BeanBagKing,

Works like a charm ! I upgraded my HC to v3.10 then installed the Intel OpenCL then the pocl .. now HC works fine even without using the --force

Hey everyone,

This section:

"Git pocl, make, install

Code:
git clone https://github.com/pocl/pocl  
cd pocl  
./autogen.sh
./configure
make  
make install  "

I think they updated the Git repository, because none of those apply anymore.

Anyone have an idea on what to do? I have been on this for approaching 6 hours.

UPDATE: My host machine is 64 bit The-Distribution-Which-Does-Not-Handle-OpenCL-Well (Kali), and my VMWare image for The-Distribution-Which-Does-Not-Handle-OpenCL-Well (Kali) is 32 bit lol, so. I just used it on my 64 bit The-Distribution-Which-Does-Not-Handle-OpenCL-Well (Kali) and it ran just fine! Still does not solve the update needed for this, but. Still got around it!