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How To: Attend Defcon Without Looking Like a Noob or Spending a Fortune

Defcon is the largest hacker conference with something for everyone, whether it be the talks, parties, villages, or any of the hundreds of events. In this guide, we'll take a holistic view at everything that goes into attending the con for the first time, from securing your electronics and making the most of your time to the logistics of getting there and finding the right place to stay.

How To: Attack Web Applications with Burp Suite & SQL Injection

Web applications are becoming more and more popular, replacing traditional desktop programs at an accelerated rate. With all these new apps out on the web comes various security implications associated with being connected to the internet where anyone can poke and prod at them. One of the simplest, yet the most prevalent types of security flaws found in modern web apps are SQL injections.

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: Discover & Attack Raspberry Pis Using Default Credentials with Rpi-hunter

When setting up a Raspberry Pi, it's easy to overlook changing the default password. Like many IoT devices, the Raspberry Pi's default Raspbian operating system installs with a widely-known default password, leaving the device vulnerable to remote access. Using a tool called rpi-hunter, hackers can discover, access, and drop custom payloads on any weak Pi connected to the same network.

Advice from a Real Hacker: How I Would Build the God's Eye of Furious 7

In the recent hit movie Furious 7, the storyline revolves around the acquisition of a hacking system known as "God's Eye" that is capable of finding and tracking anyone in real time. Both the U.S. spy agencies and an adversarial spy agency (it's not clear who the adversary is, but the location is "beyond the Caucasus mountains," which could imply Russia?) desperately want their hands on this system.

How To: Create a Reverse Shell to Remotely Execute Root Commands Over Any Open Port Using NetCat or BASH

Reverse shells are useful for issuing commands to a remote client when the client is behind something such as a NAT. You might say, "But can't a normal shell or simple SSH tunnel do the same thing?". No, it can't. All over the internet I see a lot of confusion regarding the difference between a normal shell and a reverse shell. Let's clear this up before we get started.

How To: Hack WPA WiFi Passwords by Cracking the WPS PIN

A flaw in WPS, or WiFi Protected Setup, known about for over a year by TNS, was finally exploited with proof of concept code. Both TNS, the discoverers of the exploit and Stefan at .braindump have created their respective "reaver" and "wpscrack" programs to exploit the WPS vulnerability. From this exploit, the WPA password can be recovered almost instantly in plain-text once the attack on the access point WPS is initiated, which normally takes 2-10 hours (depending on which program you use).

How To: The Null Byte Guide to 3D Printing for Hackers

3D printers allow hackers and makers alike to create something from nothing. They're an incredible technology that lets you build protective cases and covers for gear such as a wardriving phone and Raspberry Pi-Hole. 3D printers can even help you out in a bind when something breaks, and it's impossible to get the part, since you can just print one out yourself.

How To: Check Your MacOS Computer for Malware & Keyloggers

While you might suspect your MacOS computer has been infected with malware, it can be difficult to know for sure. One way to spot malicious programs is to look for suspicious behavior — like programs listening in on our keyboard input or launching themselves every time we boot. Thanks to free MacOS tools called ReiKey and KnockKnock, we can detect suspicious programs to discover keyloggers and other persistent malware lurking on our system.

How To: Run Kali Linux as a Windows Subsystem

Kali Linux is known as being the de facto penetration-testing Linux distribution but can be a pain to use as an everyday OS — even more of a pain if that means carrying around a second laptop or the constant frustration of using the finicky Wi-Fi on virtual machines. But there's another option: installing a Kali subsystem on your Windows computer as a convenient compromise.

How to Hack Wi-Fi: Automating Wi-Fi Hacking with Besside-ng

Besside-ng is the hidden gem of the Aircrack-ng suite of Wi-Fi hacking tools. When run with a wireless network adapter capable of packet injection, Besside-ng can harvest WPA handshakes from any network with an active user — and crack WEP passwords outright. Unlike many tools, it requires no special dependencies and can be run via SSH, making it easy to deploy remotely.

Advice from a Real Hacker: How to Create Stronger Passwords

People who know that I am a professional hacker often ask me what they can do to make their computers and personal information safe from people like me. The answer, of course, is that nothing will make you completely safe, but there are a number of measures any computer user can take to reduce the chances of being a victim of a hacker.

Android for Hackers: How to Backdoor Windows 10 & Livestream the Desktop (Without RDP)

The Windows 10 desktop and microphone can be livestreamed without using Remote Desktop Protocol (RDP) software and without opening any ports on the target computer. A hacker with low user privileges can monitor and exfiltrate a target's every move and private conversation in real time no matter where they are. Hackers are watching and listening, and there are few ways to protect yourself.

How To: Use Websploit to Scan Websites for Hidden Directories

Websites are often misconfigured in ways that allow an attacker to view directories that are not ordinarily meant to be seen. These directories can contain sensitive information such as private credentials or configuration files that can be used to devise an attack against the server. With a tool called Websploit, hackers can scan targets for these hidden directories without difficulty.

Hacking macOS: How to Perform Situational Awareness Attacks, Part 1 (Using System Profiler & ARP)

The first few minutes after gaining access to a MacBook are critical — but where do we begin? Using tools built into macOS, we can develop an in-depth understanding of running background processes, detect antivirus software, locate sensitive files, and fingerprint other devices on the network. All of this can be done without installing additional software or modifying any files.

Mac for Hackers: How to Organize Your Tools by Pentest Stages

With all of the bare-bones setup out of the way in our Mac for Hackers series, your Apple machine should be ready to run a significant amount of pentesting tools. We can pull tools from GitHub and compile them, we can pull dependencies or tools from Homebrew, we have both Python and Ruby. Everything is ready to go and now it's time to start building a toolbox on our local host.

How To: Bypass File Upload Restrictions Using Burp Suite

When attempting to gain access to a server, there may come a point when you need to get around file upload restrictions to upload something. If we can find a way to get around the restrictions, then we can upload anything we want to the server, effectively compromising it. That is what we'll be doing here today, so let's get started!

Behind the Hack: How I Discovered the 8-Try Master Combo Lock Exploit

In my last guide, I showed how you could crack the combination of any Master Lock combination padlock in 8 tries or less using my online calculator. Now, as promised, I'll be showing you how I devised the attack, which is based off the well-known technique that reduces the 64,000 possible combinations of a Master Lock down to just 100. Here, I will be drilling open a Master combo lock to show you how the insides work.