#!/bin/bash # Copyright (C) 2022-2024 Thien Tran # # Licensed under the Apache License, Version 2.0 (the "License"); you may not # use this file except in compliance with the License. You may obtain a copy of # the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the # License for the specific language governing permissions and limitations under # the License. unpriv(){ sudo -u nobody "$@" } # Compliance sudo systemctl mask debug-shell.service # Setting umask to 077 umask 077 echo 'umask 077' | sudo tee -a /etc/bash.bashrc # Harden SSH unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/ssh/ssh_config.d/10-custom.conf | sudo tee /etc/ssh/ssh_config.d/10-custom.conf sudo chmod 644 /etc/ssh/ssh_config.d/10-custom.conf # Disable coredump unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/security/limits.d/30-disable-coredump.conf | sudo tee /etc/security/limits.d/30-disable-coredump.conf # Setup dconf umask 022 mkdir -p /etc/dconf/db/local.d/locks unpriv curl --proxy http://127.0.0.1:8082 https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/dconf/db/local.d/locks/automount-disable | sudo tee /etc/dconf/db/local.d/locks/automount-disable unpriv curl --proxy http://127.0.0.1:8082 https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/dconf/db/local.d/locks/privacy | sudo tee /etc/dconf/db/local.d/locks/privacy unpriv curl --proxy http://127.0.0.1:8082 https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/dconf/db/local.d/adw-gtk3-dark | sudo tee /etc/dconf/db/local.d/adw-gtk3-dark unpriv curl --proxy http://127.0.0.1:8082 https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/dconf/db/local.d/automount-disable | sudo tee /etc/dconf/db/local.d/automount-disable unpriv curl --proxy http://127.0.0.1:8082 https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/dconf/db/local.d/prefer-dark | sudo tee /etc/dconf/db/local.d/prefer-dark unpriv curl --proxy http://127.0.0.1:8082 https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/dconf/db/local.d/privacy | sudo tee /etc/dconf/db/local.d/privacy sudo dconf update umask 077 # Avoid phased updates unpriv curl --proxy http://127.0.0.1:8082 https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/apt/apt.conf.d/99sane-upgrades | sudo tee /etc/apt/apt.conf.d/99sane-upgrades sudo chmod 644 /etc/apt/apt.conf.d/99sane-upgrades sudo apt update -y sudo apt full-upgrade -y sudo apt autoremove -y # Adding KickSecure's repo sudo http_proxy=http://127.0.0.1:8082 https_proxy=http://127.0.0.1:8082 extrepo enable kicksecure # Debloat sudo apt purge -y thunderbird emacs emacs-gtk emacs-bin-common emacs-common firefox* keepassxc cups* system-config-printer* xsettingsd yelp* sudo apt autoremove -y sudo apt autoclean # Distribution morphing sudo apt update sudo apt install --no-install-recommends kicksecure-qubes-cli -y sudo apt autoremove -y sudo repository-dist --enable --repository stable-proposed-updates sudo extrepo disable kicksecure sudo mv /etc/apt/sources.list ~/ sudo touch /etc/apt/sources.list #Enabling SUID Disabler and Permission Hardener sudo systemctl enable --now permission-hardening # Restrict /proc and access sudo systemctl enable --now proc-hidepid.service # Reduce kernel information leaks # Will break a lot of applications. The apps I use on KickSecure work fine with it so I am enabling it. sudo systemctl enable --now hide-hardware-info.service # Install packages sudo apt install --no-install-recommends arc-theme loupe qubes-ctap qubes-gpg-split -y # Flatpak update service unpriv curl --proxy http://127.0.0.1:8082 https://raw.githubusercontent.com/TommyTran732/QubesOS-Scripts/main/etc/systemd/user/update-user-flatpaks.service | sudo tee /etc/systemd/user/update-user-flatpaks.service unpriv curl --proxy http://127.0.0.1:8082 https://raw.githubusercontent.com/TommyTran732/QubesOS-Scripts/main/etc/systemd/user/update-user-flatpaks.timer | sudo tee /etc/systemd/user/update-user-flatpaks.timer