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Big name individual hackers and hacker groups everywhere in the news are getting caught and thrown in jail. Everytime I see something like this happen, I won't lie, I get a little sad. Then I wonder, how are these guys getting caught? If a group like LulzSec, with all the fame ...more

While the legality of recording phone conversations varies from state to state, it's still a sought-after feature for most people. How else are we going to shame all of those bad Comcast customer service reps? Since it's a legal gray area, HTC and other smartphone manufacturer ...more

Welcome back, my budding hackers! As you know, I firmly believe that to be a true professional hacker, you need to be proficient in Linux. This is for a number of good reasons. Most hacker tools are developed in Linux (well over 90 percent). Linux offers us greater granulari ...more

When I left off on our last hack, we had hacked into the ubiquitous Windows Server 2003 server by adding ourselves as a user to that system so that we can return undetected at any time. The problem with this approach is that a sysadmin who is on their toes will note that a new ...more

Welcome back, my rookie hackers! I recently began a series on using Metasploit, and my goal with it is to teach you the very basics the incredibly powerful hacking tool has to offer while progressively moving on to the more advanced features. In my first Metasploit installme ...more

Remember that scene in The Matrix when Trinity uses a realistic Nmap port scan, followed by an actual SSH exploit (long since patched) to break into a power company? Well, believe it or not, but that scene is not far fetched at all. If you want to exploit vulnerabilities and r ...more

Today, we are going to combine what we learned from the Introduction to Cryptography article with our Java programming skills. If you are new to Java, check out Matthew's Learn Java: Part One for a quick beginner's lesson, or check out some of the Java tutorials directly on Or ...more

Welcome back, my hacker novitiates! As you know by now, the Metasploit Framework is one of my favorite hacking tools. It is capable of embedding code into a remote system and controlling it, scanning systems for recon, and fuzzing systems to find buffer overflows. Plus, all o ...more

Automating port scanners, directory crawlers, and reconnaissance tools can be complicated for beginners just getting started with Kali Linux. Sparta solves this problem with an easy-to-use graphical interface designed to simplify a penetration tester's tasks. Sparta, authored ...more

Hello fellows nullbyters, first of i will start saying that im addicted to this community, i feel the challenge growing up so fast, all the newbies, amateurs,advanced and professionals hackers around trying their best to help the community, badly but we got some script-kids to ...more

Welcome back, my hacker novitiates! When we are trying to find vulnerabilities in a website to attack, we need a solid web server vulnerability scanner. Internet-facing web apps can open enormous opportunities for us as they are often riven with vulnerabilities and can often ...more

While the USB Rubber Ducky is well known by hackers as a tool for quick in-person keystroke injection attacks, one of the original uses for it was automation. In this guide, I'll be going the latter, explaining how we can use it to automate Wi-Fi handshake harvesting on the Ra ...more

Now that we've talked about encryption and managing your passwords, let's continue this series on getting your Mac ready for hacking by turning our attention to the terminal. The terminal is a key component of any pentester's setup. We're going to be spending a lot of time wo ...more

Keystroke injection attacks are popular because they exploit the trust computers have in human interface devices (HIDs). One of the most popular and easily accessible keystroke injection tools is the USB Rubber Ducky from Hack5, which has a huge range of uses beyond simple HID ...more

Very often we have processes in Linux that we want to always run in the background at startup. These would be processes that we need to start at bootup and always be available to us. If we are running a Linux distribution with a GUI (graphical user interface) like Kali or Ubu ...more

Kali Linux is the obvious first choice of an operating system for most new hackers, coming bundled with a curated collection of tools organized into easy-to-navigate menus and a live boot option that is very newbie-friendly. But Kali isn't the only distribution targeted at pen ...more

Welcome back, my tenderfoot hackers! Web apps are often the best vector to an organization's server/database, an entry point to their entire internal network. By definition, the web app is designed to take an input from the user and send that input back to the server or datab ...more

Welcome back, my hacker apprentices! Although there is a multitude of different hacker types, the one target they all share is the database. I often refer to the database as the hacker's Holy Grail, or the ultimate prize for an effective hack. That's because the database—alm ...more

Welcome back, my tenderfoot hackers! In continuing my series on digital forensics using Kali, I want to introduce you to two complementary tools, both built right into Kali Linux. These are Brian Carrier's tools Autopsy and Sleuth Kit. Carrier is one of the leading authoriti ...more

Android Debug Bridge (or ADB for short) serves as a remote terminal interface for executing shell commands on any Android device. Put simply, ADB lets you send commands from your computer to your phone or tablet, some of which would require root access if they were performed o ...more

Welcome back, my greenhorn hackers! This tutorial will be the fourtenth in the Linux for hackers series and will focus on the MySQL database. Although this is not strictly a Linux tutorial, MySQL is the database of choice on most Linux distributions. In addition, it is the mo ...more

One of the first steps when pentesting a website should be scanning for hidden directories. It is essential for finding valuable information or potential attack vectors that might otherwise be unseen on the public-facing site. There are many tools out there that will perform t ...more

Welcome back, my novice hackers! Previously in my "Spy on Anyone" series, we used our hacking skills to turn a target's computer system into a bug to record conversations and found and downloaded confidential documents on someone's computer. In this tutorial, I will show you ...more

Many windows users, if not all, run into a virus infection once in a while. This is unavoidable when using Microsoft's operating system. Without digressing too much, the fact that Windows is such a popular OS with no controlled software sources makes it easy for viruses and ma ...more

As you progress in the world of information security, you'll find yourself in situations where data protection is paramount. No doubt you will have files to hide and secrets to share, so I'm going to show you how to use the GNU Privacy Guard (GnuPG or GPG for short) to encrypt ...more

There's over 20 million people out there who use Ubuntu as their main operating system, and the number is steadily increasing due to its thriving community. While it's easy enough to download Ubuntu on your PC, the process to get it on your mobile devices can be fairly more di ...more

The USB Rubber Ducky is a well-known hacking device in the cybersecurity industry, but it needs to be preprogrammed before it can be used. That means it's not easy to issue commands to a target computer since you can't interact with it from afar after plugging it in. And if yo ...more

Welcome back, my tenderfoot hackers! Now that we have begun this trip down web app hacking lane, we need to first address target reconnaissance. Like any hack, reconnaissance is critical. (Are you tired of me saying that yet?) There is no better telltale sign of a script-kid ...more

Welcome back, my amateur hackers! As many of you know, Null Byte will soon be re-establishing its IRC channel. In preparation of that event, I want to show how to set up a secure IRC client with OTR, or Off the Record. OTR does all the right things to make your instant messa ...more

Hey Everyone! Welcome to my post. We have seen a numerous GUI Tool in kali linux. Armitage, wireshark, Burpsuite etc,. Lets see an another GUI tool. GHOST PHISHER: Open terminal and type ghost-phisher and you will see various tabs ghost phisher has cool features : 1.HTTP S ...more

Welcome back, my greenhorn hackers! Earlier in this series, I showed a you a couple of different ways of fingerprinting webservers. Probably the easiest way, is to use netcat and connect to port 80 and pull the webserver banner. The banner is simply the application advertisi ...more

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 ...more

Welcome back, my hacker novitiates! In the previous two posts in this series, we looked at the basics of buffer overflows. In this post, we will look at one technique for finding buffer overflows. We will try to send random, oversized, and invalid data at a variable to see wh ...more

Introduction The 3 major anonymity networks on the Internet are Tor/Onionland, I2P and Freenet. If you feel confused on which one is the "best" one to use the answer is simple. Use all three! Each anonymity network is designed for a different specific purpose. One network al ...more

A lot of people still trust their web browsers to remember every online account password for them. If you're one of those users, you need to adopt a more secure way of managing passwords, because browser-stored passwords are hacker gold mines. With a USB Rubber Ducky and physi ...more

If you're ever in a situation where you need to take a peek at the wireless spectrum, whether it's for Bluetooth or Wi-Fi devices, there's a fascinating Python 3-based tool called Sparrow-wifi you should check out. It's cross-platform, easy to use, and has an impressive GUI th ...more

Welcome back, my novice hackers! We've done a number of tutorials using one of my favorite hacking tools, Metasploit. In each of them, we've used the msfconsole, which can be reached through either the menu system or through simply typing "msfconsole" from the terminal. This ...more

Firefox's hidden advanced menu gives you several ways to tweak the way it works under the hood. Here are a set of settings to change to get it to browse faster than ever. Step 1: Go to About:Config Go to the URL bar (A.K.A awesome bar) and enter about:config. If you want to ...more

With just two microcontrollers soldered together, you can inject keystrokes into a computer from a smartphone. After building and programming the device, you plug it into a desktop or laptop, access it over a smartphone, and inject keystrokes as you would with a USB Rubber Duc ...more

Ransomware is software that encrypts a victim's entire hard drive, blocking access to their files unless they pay a ransom to the attacker to get the decryption key. In this tutorial, you'll learn how easy it is to use the USB Rubber Ducky, which is disguised as an ordinary fl ...more

Hello my anxious hackers, the week has started and here we begin a new series that I think will help many here and not only, for those that have the opportunity to follow our tutorials but they are not yet part of the community. Don't be a script-kid? what do you mean? In pro ...more

Welcome back, my novice hackers! In this third installment of my Hacking Web Apps series, we will look at the authentication of web applications. Remember, there are many ways to hack web applications (as I pointed out in my first article), and cracking authentication is just ...more

If you need a tiny, flexible attack platform for raining down human-interface-device (HID) attacks on unattended computers, the USB Rubber Ducky is the most popular tool for the job. By loading the Ducky with custom firmware, you can design new attacks to be effective against ...more

While hackers adore the command line, working with the GUI (graphical user interface) of an operating system has some advantages. This is especially true when it comes to post-exploitation. When we can control the mouse and keyboard of a remote computer, we can truly say we ha ...more

Welcome back, my budding hackers! In my continuing effort to build your basic Linux skills for hacking, I want to show you how to build a secure "tunnel" to MySQL. Of course, the techniques I use here could be used for any application, but since MySQL is such a critical app ...more

Null Byte users have often requested video content, but the question has always been what format would best serve our community. This week, we partnered with Null Space Labs, a hackerspace in Los Angeles, to test the waters by hosting a series of talks on ethical hacking for s ...more

Welcome back, my newbie hackers! Hackers often are associated with clandestine and illegal activity, but that is not necessarily always the case. Hackers are increasingly being used and employed for law enforcement, national security, and other legitimate purposes. In this in ...more

With the number of web applications out there today, it comes as no surprise that there are just as many vulnerabilities waiting for hackers to discover. Finding those vulnerabilities can be a difficult task, but there are plenty of tools available to make the process easier. ...more

This tutorial is one technique to use the full functionality of your Pi. The small size makes it ideal for inside hacks, but still has the capabilities of a average desktop or computer. I should mention that a tutorial that OTW has done, but I'm gonna take it a step further. O ...more

The biggest complaint I have with my Nexus 7 is the lack of support for different types of media files. I have a lot of movies and music that I've downloaded off the web, in many different formats, and I want them on my tablet. Want to play that 1080p MKV file of your favorit ...more

While hackers know and love the Raspberry Pi, many don't know of its cheaper cousin, the microcontroller. Unlike a Pi, which can be used more or less like a regular computer, microcontrollers like the Wi-Fi connected ESP8266 require some necessary programming skill to master. ...more

OTW's great Tutorial Hack Like a Pro: How to Save the World from Nuclear Annihilation gives me the inspiration to try this on Win7 sp1. I did this under Bugtraq 2 Black Widow but it works almost similar on Kali-Linux. Step 1: Start All Services Und Run Metasploit On bugtraq ...more

For years, PuTTy has reigned supreme as the way to establish a Secure Shell (SSH) connection. However, those days are numbered with the addition of the OpenSSH server and client in the Windows 10 Fall Creators Update, which brings Windows up to par with macOS and Linux's abili ...more

This is the best how-to's website that I've ever seen, and I wanted to join it. It taught me a lot, but, because I'm here to learn too, please correct me if I'm wrong. You probably know that Ettercap is a very powerful tool for man in the middle attacks. You probably know tha ...more

Welcome back, my greenhorn hackers! In many cases when a computer, phone, or mobile device is seized for evidence, the system will have graphic images that might be used as evidence. Obviously, in some cases these graphic images may be the evidence such as in child pornograph ...more

Welcome back, my aspiring hackers! Although this article may have been better placed first in this series, I doubt that anyone would have read it when just starting out studying Linux. Now, that you are well into your Linux studies and have some familiarity with how it operat ...more

Hello, fellow hackers. I'm sure we've all seen it somewhere: the undying question of "How do I hack the game so-and-so?" And the answer usually is, "Come back when you actually know how to hack!" But how does one even go about "hacking" a game? What could that even mean? Wha ...more

You've protected your Ubuntu system from physical attacks, annoyed network hackers, and sandboxed potentially malicious applications. Great! Now, the next logical steps to locking down your OS include thoroughly auditing Ubuntu for weak points, using antivirus software that re ...more