Hashcat vast.ai and hashcat.

StillBlue

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Due to having yet again hardware issues, I was considering enlisting vast.ai services during my downtime.

I have used vast.ai a while ago for something else, and there were some cheap services to be had. I was wondering if anybody else here uses it for Hashcat and if so what docker images they may use and any advice.

Also I have a half way done recovery sitting on my laptop at the moment and guess I can just move the .restore file across to a cloud based machine and continue from where mine left off?

Any advice/knowledge around this would be gratefully received.
 

StillBlue

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Actually, I think I am sorted. It's a bit of an eye opener using some of the servers available compared to my own hardware.
 

Cyclone

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Glad you got it sorted out.
To answer your original question, here's the basic settings to get you started:
  • vast.ai setup for hashcat:
    • Docker image
      • nvidia/cuda
    • Launch Mode
      • Run interactive shell server, SSH
    • On-start script
      • none (customize to fit your needs)
    • Disk space to allocate
      • 10gb+ (customize to fit your needs)
    • FYI
      • higher TFLOPS = faster GPU performance
      • scripting your setup will save you time and money since you're paying $$ / hour
        • ex: create a script to prep the system (download hashcat, wordlist, etc...)

 

StillBlue

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Thank you. Yes, managed to get myself worked out mostly.

I watering a couple of my test runs earlier. Finished before I had drank my tea.
 

StillBlue

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Actually, for anyone else thinking of doing this, the one thing I would say, is I did try anything I wasn't sure of on the cheapest server first, and then if it looked like it was working properly, I swapped over to a fast one. In my head this cost me less to experiment with some of the docker images, which I found some better than others.
 

rsj123

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An addition on cyclone's reply.
I suggest u to use the tag including everything of cuda imagine or u might get in some errors.
 

Alcanjp

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Hello

I am unable to upload a file to an instance on VAST.ai
scp -P 19691 /home/coper/Documents/My_File.001 root@ssh5.vast.ai:/home
ssh: connect to host ssh5.vast.ai port 19691: Connection refused

Is this issue from the public key?
 

Cyclone

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Sounds like your public key may be the issue.

From your linux box, copy your id_rsa.pub
Code:
cat ~/.ssh/id_rsa.pub
then paste that into "Change SSH Key" on vast.ai / console / account.

Your key will start with "ssh-rsa" and end with "user@hostname".

example:
Code:
ssh-rsa AAAAB3Nza...blah...blah...blah...blah...blah...blah...blah...blah...blah...blah... user@hostname
 

Alcanjp

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Sounds like your public key may be the issue.

From your linux box, copy your id_rsa.pub
Code:
cat ~/.ssh/id_rsa.pub
then paste that into "Change SSH Key" on vast.ai / console / account.

Your key will start with "ssh-rsa" and end with "user@hostname".

example:
Code:
ssh-rsa AAAAB3Nza...blah...blah...blah...blah...blah...blah...blah...blah...blah...blah... user@hostname
I actually got stupid. I managed to get it working. How ever is vast.ai the cheapest?
 

cablecable

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For those who are still wondering, use the docker "dizcza/docker-hashcat/" much easier setup, everything preinstalled.
 
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