Kali

• https://www.kali.org/docs/general-use/kali-linux-sources-list-repositories/

Branches

Switch to the most stable branch:

$ echo "deb http://http.kali.org/kali kali-last-snapshot main non-free contrib" | sudo tee /etc/apt/sources.list

Setup Checklist

Mix settings list (both for hardware install and virtualization):

[VM] Disable screen lock (Power Manager -> Display, Security -> OFF)
[VM] Configure networks (+ remember to configure VBox DHCP first)
[All] Update && Upgrade (+ change /etc/apt/sources.list to HTTPS if getting "403 Forbidden" because of AV)
	$ sudo apt update && sudo upgrade -y
	$ sudo reboot
[VM] Install guest additions
	* Insert Guest Additions CD image and open terminal there
	$ cp /media/cdrom0/VBoxLinuxAdditions.run ~/Desktop && chmod 755 ~/Desktop/VBoxLinuxAdditions.run && sudo ~/Desktop/VBoxLinuxAdditions.run
	$ sudo reboot
	$ rm ~/Desktop/VBoxLinuxAdditions.run && sudo eject
[ALL] Manage users
	* Enable root or create new user
		SWITCH {
			CASE (root):
				$ sudo -i
				$ passwd root
				* Re-login as root
			CASE (non-root):
				$ sudo useradd -m -s /bin/bash -u 1337 snovvcrash
				$ sudo passwd snovvcrash
				$ sudo usermod -aG sudo snovvcrash
				* Re-login as snovvcrash
		}
	* Disable kali user [VM]
		SWITCH {
			CASE (lock):
				$ sudo usermod -L kali
				$ sudo usermod -s /sbin/nologin kali
				$ sudo chage -E0 kali
			CASE (delete):
				$ sudo userdel -r kali
		}
[ALL] Configure sudo
	* Increase sudo password timeout value or disable password prompt completely
	$ sudo visudo
		SWITCH {
			CASE (increase timeout):
				$ sudo sh -c 'echo "Defaults    env_reset,timestamp_timeout=45" > /etc/sudoers.d/snovvcrash'
			CASE (disable password):
				$ sudo sh -c 'echo "snovvcrash ALL=(ALL) NOPASSWD: ALL" > /etc/sudoers.d/snovvcrash'
		}
[ALL] Clone dotfiles
	$ git clone https://github.com/snovvcrash/dotfiles-linux ~/.dotfiles
[ALL] Run ~/.dotfiles/00-autoconfig scripts on the discretion

Console Logging

script

$ script ~/ws/shells/`date "+%FT%H%M%S"`.script
$ for i in `grep -anr '\... OK' | rev | cut -d: -f2 | rev | awk -F" " '{print $3}' | sort -u | grep . | cut -d: -f1`; do proxychains4 -q dig +tcp +noall +answer $i @192.168.1.11 | grep IN; sleep $((1+RANDOM % 3)); done

tmux

• https://github.com/tmux-plugins/tmux-logging

bash ~/.tmux/plugins/tmux-logging/scripts/screen_capture.sh
bash ~/.tmux/plugins/tmux-logging/scripts/save_complete_history.sh

ts

$ sudo apt install moreutils -y
$ command | ts '[%Y-%m-%d %H:%M:%S]' | tee command.log

Time in Prompt

bash

~/.bashrc (replace ! with %):

PS1='${debian_chroot:!($debian_chroot)}[\D!d}|\D{!k:!M}] \[\033[01;32m\]λ  \[\033[00m\]\[\033[01;34m\]\w\[\033[00m\] '

zsh

$ZSH_CUSTOM/themes/robbyrussell.zsh-theme (replace ! with %):

PROMPT="!(?:!{$fg_bold[green]!}➜ :!{$fg_bold[red]!}➜ ) "
PROMPT+='!{$fg[cyan]!}!(4~|!-1~/…/!2~|!3~)!{$reset_color!} $(git_prompt_info)'

if lsof -tac script "$(tty)" > /dev/null; then
    PROMPT="[!D{!d}|!D{!k:!M}]* $PROMPT"
else
    PROMPT="[!D{!d}|!D{!k:!M}] $PROMPT"
fi

Tricks

Paperify

When dealing with an engagement where there's no internet access available on the attacker's box, one can use paperify to send data to her teammates (hashes to brute force, for example).

Zip the hashes with best compression, base64 the archive and create a QR code:

$ 7z a -t7z -m0=lzma -mx=9 -mfb=64 -md=32m -ms=on archive.7z tgsrep.in
$ base64 -w0 archive.7z > 7z
$ ./paperify.sh 7z

Translate the QR code with your favorite mobile app and send the contents via a secure channel (e. g., a messenger). Now your teammates can reverse the process to get the initial zip file:

PS > .\b64decode.ps1 .\b64.txt out.7z

b64decode.ps1

$IN = $args[0]
$OUT = $args[1]
$data = [IO.File]::ReadAllText("$pwd\$IN")
[IO.File]::WriteAllBytes("$pwd\$OUT", [Convert]::FromBase64String($data))

Debian to Kali

sudo sh -c 'echo "\ndeb http://http.kali.org/kali kali-rolling main contrib non-free" >> /etc/apt/sources.list'
sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys ED444FF07D8D0BF6
sudo apt update
sudo apt install kali-tools-top10 -y