cmbaughman

Configure fail2ban

Install

sudo apt install fail2ban

Activate the service (so that after reboot it runs)

sudo systemctl enable fail2ban.service

Create

cp /etc/fail2ban/jail.conf /etc/fail2ban/jail.local

cmbaughman

Keeping a list here of automated attack IPs that use the cloudflare VPN. These are used by automated vulnerability scaners. Fuck those assholes.

173.245.48.0/20 103.21.244.0/22 103.22.200.0/22 103.31.4.0/22 141.101.64.0/18 108.162.192.0/18 190.93.240.0/20

cmbaughman

Encrypt and Store Passwords for Shell Scripts

Here's a safe and secure method of storing passwords, encrypted, for use in shell scripts. This is in bash, but can easily be ported to other shells as the bulk of the work is handled by the openssl and sshpass apps.

1. Install openssl and sshpass:

sudo apt update && sudo apt install openssl sshpass -y

cmbaughman

Fun stuff with Roku

Enumerate Roku devices

sudo nmap -sV -O -n 192.168.X.X/24

Identify the device and other stuff using netcat on the SSDP multicast address, port 1900.

cmbaughman

#!/usr/bin/bash

sudo apt-mark auto $(apt-mark showmanual | grep -E "^linux-([[:alpha:]]+-)+[[:digit:].]+-[^-]+(|-.+)$")

cmbaughman

Installing the latest Firefox Developer Edition on Linux

Prerequisites

You need to have the application curl installed. Most Linux distros will already have it included. However, you may need to run either:

Fedora/RedHat

$ sudo dnf -y install curl

cmbaughman

#!/bin/bash

sudo apt install sssd heimdal-clients msktutil

sudo mv /etc/krb5.conf /etc/krb5.conf.default

COMP=$HOSTNAME

read -p 'What is the domain name? (example: URLFINANCIAL without the .local) ' DOMAIN
LCASEDOMAIN=`echo "$DOMAIN" | tr '[:upper:]' '[:lower:]'`

cmbaughman

FROM ubuntu:latest
 
RUN apt-get update \
  && apt-get install -y python3-pip python3-dev \
  && cd /usr/local/bin \
  && ln -s /usr/bin/python3 python \
  && pip3 install --upgrade pip 

# INSTALL DEPENDENCIES
RUN apt-get install -y curl unzip openjdk-8-jre-headless xvfb libxi6 libgconf-2-4

cmbaughman

#!/bin/bash

find . -type d -empty -exec rm -i -R {} \;

cmbaughman

#!/bin/bash

while true;
do 
  printf "$(awk -v c="$(tput cols)" -v s="$RANDOM" 'BEGIN{srand(s);while(--c>=0){printf("\xe2\x96\\%s",sprintf("%o",150+int(10*rand())));}}')";
done