Evening Cyber Defender Workshop:

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Event Description: 

When: Wednesday, June 20, 2018,  7:00-8:30 pm

Where: Meeting room, Arden-Dimick Library meeting room, 891 Watt Avenue, sw corner of Watt and Northrop.

 

Topic: --Cracking Windows Passwords--

Speaker: Gerard Laygui

 

Topic Summary:

This is a brief class on how to use the password cracking tool "Hashcat" to crack Windows password hashes.  The class will cover the different attack methods using Hashcat.

 

Bring either a ...

A laptop with MS Windows or * Linux OS.

NOTE: Using a Virtual Machine will not work as VMs can't directly access the GPU.

 

MS WINDOWS PC (Okay to use the onboard GPU):

1. Preinstalled Hashcat v4.1.0  # https://hashcat.net/hashcat/

2. Preinstall the Hashcat compatible video driver versions (see the above website).

3. Preinstall OpenCL 2.0: # https://software.intel.com/en-us/intel-opencl/download

Check if OpenCL has been previously installed on Windows:
  Go to: Start -> Control Panel -> System & Security -> Administrative Tools.
  Double Click on Computer Managment.
  Click on Device Manager.
  On the right side click to open Display Adapters.
  Right-click on available graphics adapter and select Properties.
  Click on Driver.
  Go to Driver Details.

 

LINUX/KALI LINUX (* Requires a separate dedicated Graphics Processor Unit (GPU) video chip often used for gaming. e.g. Nvidia card):

1. Preinstalled Hashcat v4.1.0  # https://hashcat.net/hashcat/

2. Preinstall the Hashcat compatible video driver versions (see the above website).

  Also see: https://docs.kali.org/general-use/install-nvidia-drivers-on-kali-linux

3. Preinstall OpenCL 2.0:
   First check for compatible CPU/GPU  # https://en.wikipedia.org/wiki/OpenCL ("OpenCL 2.0 support")

   # sudo apt install ocl-icd-libopencl1

 

Test if OpenCL is working properly with Hashcat:

Unzip Hashcat the binaries and run the following benchmark NTLM command.  

    Windows (use the --force option if you get errors):
    C:\> Hashcat64.exe -m 1000 -b

    Linux:
    # Hashcat64.bin -m 1000 -b

 

Further details of these procedure will be given to those who attend the workshop.

 

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Dates: 
Wednesday, June 20, 2018 - 7:00pm to 8:30pm