koenrh

Running Hashcat on Google Cloud's GPU-based VMs

In February 2017, Google announced the availability GPU-based VMs. I spun up a few of these instances, and ran some benchmarks. Along the way, I wrote down the steps taken to provision these VM instances, and install relevant drivers.

Update April 2019: Updated instructions to use instances with the Tesla T4 GPUs.

wassname

"""
Url: https://gist.github.com/wassname/1393c4a57cfcbf03641dbc31886123b8
"""
import unicodedata
import string

valid_filename_chars = "-_.() %s%s" % (string.ascii_letters, string.digits)
char_limit = 255

def clean_filename(filename, whitelist=valid_filename_chars, replace=' '):

dropmeaword

Browser histories

Unless you are using Safari on OSX, most browsers will have some kind of free plugin that you can use to export the browser's history. So that's probably the easiest way. The harder way, which seems to be what Safari wants is a bit more hacky but it will also work for other browsers. Turns out that most of them, including Safari, have their history saved in some kind of sqlite database file somewhere in your home directory.

The OSX Finder cheats a little bit and doesn't show us all the files that actually exist on our drive. It tries to protect us from ourselves by hiding some system and application-specific files. You can work around this by either using the terminal (my preferred method) or by using the Cmd+Shft+G in Finder.

Once you locate the file containing the browser's history, copy it to make a backup just in case we screw up.

marcelaraujo

System process daemons that are system-wide provided by mac os x are described by launchd preference files that can be showed with the command:
$ sudo ls -all /System/Library/LaunchDaemons/

Third party process daemons that are system-wide provided by the administrator are described by preference files that can be showed with the command:
$ sudo ls -all /Library/LaunchDaemons/

Launch Agents that are per-user provided by mac os x usually loaded when the user logs in. Those provided by the system can be found with:
$ sudo ls -all /System/Library/LaunchAgents/

Launch Agents that are per-user provided by the administrator and usually loaded when the user logs in. Those provided by the system can be found with:

mivasi

#!/usr/bin/ruby
require 'optparse'

options = {}

def log(message, options)
  if options[:verbose]
    puts "DEBUG: " + message
  end
end    

timpulver

# taken from user Albert's answer on StackOverflow
# http://stackoverflow.com/questions/5292204/macosx-get-foremost-window-title
# tested on Mac OS X 10.7.5

global frontApp, frontAppName, windowTitle

set windowTitle to ""
tell application "System Events"
    set frontApp to first application process whose frontmost is true
    set frontAppName to name of frontApp