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How To: Use the Chrome Browser Secure Shell App to SSH into Remote Devices

Many guides on Null Byte require using the Secure Shell (SSH) to connect to a remote server. Unfortunately for beginners, learning to use SSH can become a confusing mix of third-party programs and native OS support. For Chrome OS users, using SSH is even more difficult. We'll fix this by using the Chrome Secure Shell to establish an SSH connection from any device that can run a Chrome browser.

How To: Generate Private Encryption Keys with the Diffie-Hellman Key Exchange

When we are building programs that communicate over a network, how can we keep our data private? The last thing we want is some other lousy hacker sniffing our packets, so how do we stop them? The easy answer: encryption. However, this is a very wide-ranging answer. Today we're going to look specifically at how to encrypt data in Python with dynamically generated encryption keys using what is known as the Diffie-Hellman key exchange.

How To: Use Pupy, a Linux Remote Access Tool

In one of my previous articles, I discussed ShinoBot, a remote administration tool that makes itself obvious. The goal is to see if the user could detect a remote administration tool or RAT on their system. In this article, I'll be demonstrating the use of Pupy, an actual RAT, on a target Ubuntu 16.04 server.

Networking Foundations: Subnetting Based on Host Requirements

Hello everyone! I hope you are having a great day so far. Today, instead of caring about networks we are going to talk about subnetting based on host requirements as promised in my first article about subnetting. Just like in the previous articles we will jump right into the examples because that's the best way to learn.

Guide: Wi-Fi Cards and Chipsets

Greetings aspiring hackers. I have observed an increasing number of questions, both here on Null-Byte and on other forums, regarding the decision of which USB wireless network adapter to pick from when performing Wi-Fi hacks. So in today's guide I will be tackling this dilemma. First I will explain the ideal requirements, then I will cover chipsets, and lastly I will talk about examples of wireless cards and my personal recommendations. Without further ado, let's cut to the chase.

How To: Linux Basics for the Aspiring Hacker: Configuring Apache

Welcome back, my hacker novitiates! In an earlier Linux Basics tutorial, I had demonstrated the basics of the Apache web server. Since Apache is the world's most widely used web server on the Internet (as of July 2015, Apache was 38%, IIS was 26%, and Nginx is 15%), the more you know about it and understand it, the more success you are likely to have hacking it.

How To: Assemble a CNC machine router kit

A CNC router machine is probably the most useful tool a hobbyist can own, but the price for a CNC machine on the market is way more than the average hobbyist is willing to spend. You can build your own CNC with very basic tools, little knowledge of machinery, mechanics, or electronics, but be warned, these machines are inherently dangerous, so wear the proper protection and use common sense. At the very least, read the instructions and precautions on every tool you use.

How To: Tell When Someone Opens the Emails You Send Them (Using Hidden Trackers or Read Receipt Requests)

You may not always want to, but there will probably be a time when you'll want to know if an email you send — like a job application or a support request — is opened by the recipient. It's actually easy to implement, and you may be using an email client on your device right now that supports email tracking.

How To: Block Someone from Using Their Camera During Zoom Video Calls

As a meeting host on Zoom, you can't control what a participant does during your live video call, but you do have the power to turn off their camera so that other people aren't subjected to distractions. So if you catch someone in your call purposely making obscene gestures or accidentally exposing themselves while using the bathroom, you can block their camera, as long as you know how.

How To: Filter Unknown Senders in iMessage to Block Unwanted Notifications & Keep Your Messages App Clean

If your job revolves around prospective clients and customers, you may frequently receive iMessages from unknown numbers. Although this isn't necessarily a bad thing, being bombarded with messages from strangers can create disarray in your inbox if you're not careful. Luckily, Apple makes it easier to organize your conversations by allowing you to filter unknown numbers in the Messages app.

How To: Improve Battery Life on Your iPhone Running iOS 12

Performance and stability improvements, as well as new features, are just some reasons to install iOS 12, but new changes mean new battery health challenges. It can be difficult to boost battery life while taking advantage of everything this update has to offer. Luckily, there are plenty of ways to avoid unnecessary battery drain when using iOS 12 on your iPhone.