shizonic shizonic

Rust Cheat Sheet

Variables & Mutability

Variables are immutable by default. This makes Rust safer and makes concurrency easier.
Immutable means once a value is bound to that variable, it cannot be changed.
For example:

fn main() {
 let x = 5;

Turris

opkg install kmod-veth
opkg install kmod-ipt-extra
opkg install iptables-mod-extra

Install a new container (I created an arch linux container)
Open up the /srv/lxc/containername/config file for editing:

log4j RCE Exploitation Detection

You can use these commands and rules to search for exploitation attempts against log4j RCE vulnerability CVE-2021-44228

Grep / Zgrep

This command searches for exploitation attempts in uncompressed files in folder /var/log and all sub folders

sudo egrep -I -i -r '\$(\{|%7B)jndi:(ldap[s]?|rmi|dns|nis|iiop|corba|nds|http):/[^\n]+' /var/log

Matrix

matrix.org chat is split into two parts, the server and the client. The server we are going to use is called Synapse and the client is Riot.im. The Synapse will also need Postgres database and Redis for caching.

0. Folders

Make sure your folder structure looks like this.

example/

	session=lxqt
	geometry=1920x1080
	localhost # comment this out to allow connections from anywhere
	alwaysshared

	<!doctype html>
	<html>
	<head>
	<meta name="viewport" content="width=device-width" />
	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
	<title>Simple Transactional Email</title>
	<style>
	/* -------------------------------------
	GLOBAL RESETS
	------------------------------------- */

	KEYMAPOPTS="us us"
	HOSTNAMEOPTS="-n alpine"
	INTERFACESOPTS="auto lo
	iface lo inet loopback

	auto eth0
	iface eth0 inet dhcp
	hostname alpine
	"
	TIMEZONEOPTS="-z UTC"

	#!/bin/bash
	sed -i -e 's/Anarchy/Arch/g' /etc/lsb-release
	sed -i -e 's/Anarchy/Arch/g' /etc/os-release
	sed -i -e 's/anarchy/arch/g' /etc/os-release
	sed -i -e 's/arch-linux/www.archlinux/g' /etc/os-release
	echo 'SUPPORT_URL="https://bbs.archlinux.org/"' >> /etc/os-release
	echo 'BUG_REPORT_URL="https://bugs.archlinux.org/"' >> /etc/os-release
	cp /etc/os-release /usr/lib/os-release
	head -n -2 /etc/lightdm/lightdm-gtk-greeter.conf > lightdm-gtk-greeter.conf
	mv lightdm-gtk-greeter.conf /etc/lightdm/

	////////
	// The vm module lets you run a string containing javascript code 'in
	// a sandbox', where you specify a context of global variables that
	// exist for the duration of its execution. This works more or less
	// well, and if you're in control of the code that's running, and you
	// have a reasonable protocol in mind// for how it expects a certain
	// context to exist and interacts with it --- like, maybe a plug-in
	// API for a program, with some endpoints defined for it that do
	// useful domain-specific things --- your life can go smoothly.