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One of the first steps in reconnaissance is determining the open ports on a system. Nmap is widely considered the undisputed king of port scanning, but certain situations call for different tools. Metasploit makes it easy to conduct port scanning from directly inside the frame ...more

With just one line of Ruby code embedded into a fake PDF, a hacker can remotely control any Mac computer from anywhere in the world. Creating the command is the easy part, but getting the target to open the code is where a hacker will need to get creative. Ruby is just one wa ...more

Using Netcat to backdoor a macOS device has its short-comings. If the compromised Mac goes to sleep, the Netcat background process will occasionally fail to terminate correctly; This leaves Netcat running infinitely in the background and the attacker with no new way into the d ...more

As Android bug bounty hunters and penetration testers, we need a properly configured environment to work in when testing exploits and looking for vulnerabilities. This could mean a virtual Android operating system or a dedicated network for capturing requests and performing ma ...more

While hackers have taken advantage of numerous vulnerabilities in Adobe's products to deliver payloads to Windows users via PDF files, a malicious PDF file can also wreak havoc on a Mac that's using the default Preview app. So think twice before double-clicking a PDF open on y ...more

We already know that the connection between virtual and augmented reality is pretty tight, with tools like Unity making porting some apps between the two platforms fairly frictionless. But there are some things currently going in VR that just don't need to come to the world of ...more

Airgeddon is a multi-Bash network auditor capable of Wi-Fi jamming. This capability lets you target and disconnect devices from a wireless network, all without joining it. It runs on Kali, and we'll cover installing, configuring, and using its jamming functionalities on a smal ...more

Those of us with modern smartphones know that 4G LTE networks have provided us with a phenomenal experience. One light years beyond what we had access to before. For some time, AT&T has been teasing its dive into the next iteration of network speeds, agonizingly doing so witho ...more

The HoloLens is the world's first untethered holographic head-mounted computer, which Microsoft has been rather proud of—and they have every reason to be. Of course, as soon as we developers get adjusted to the idea of keeping the scope of our projects inside the bounds of the ...more

Welcome back, my greenhorn hackers! In the first part of this series, I introduced you to the basics of networking including IP addresses, ports, NAT, and DHCP. In this lesson, I want to introduce you to the basics of TCP/IP, i.e., Transmission Control Protocol (TCP) and Inte ...more

You need a good microphone on your computer in order to make audio recordings, voice chat, or use speech recognition. However, not every computer comes with a built-in mic, and not every built-in mic works great. You can purchase a cheap computer microphone on Amazon for as l ...more

Android comprises an entire ecosystem of apps, games, functions, and features, so it would only make sense that it has its own lexicon. Words, phrases, and acronyms that didn't exist ten years ago are now used in an off-the-cuff style by developers and support technicians acro ...more

Hello fellow training hackers. I do not know if many of you are familiar with ruby, but since it is a useful scripting language, that hasn't been covered too much here on Null Byte, I thought why not do some How-tos about it now and then. The idea is to write simple scripts ...more

Welcome back, my budding hackers! As I have mentioned many times throughout this series, knowing a bit of digital forensics might keep you out of a lot of trouble. In addition, digital forensics is a burgeoning and high paying career. Some knowledge and certifications in this ...more

Hi Folks. This is my first post. I will teach how to create a server and client python reverse shell using sockets and python language. The script i'll post here is going to be very simple, and from here you'll have the possibility to adapt to your own purpose. For example, my ...more

If you're just starting out with Android—or smartphones in general, for that matter—there are a lot of little things to learn. One of the first terms you'll likely encounter is "Wi-Fi," which is a wireless internet connection served up by a router in your home, office, or loca ...more

Smartphones generally have limited storage, but counter this issue with an always-on internet connection. This led to the proliferation of cloud storage services, which allow us to store and access our large media libraries remotely. The problem here is that most cloud storag ...more

Rumors have had Google making a foray into the mobile carrier world for quite some time, but today, the Mountain View tech giant finally made things official. The new service, dubbed Project Fi, will be a Mobile Virtual Network Operator, or MVNO, that uses existing Sprint and ...more

Carriers really suck, don't they? We constantly have to monitor our data usage, even though many of us are on "unlimited" plans, which, in reality, will just be throttled to a slower 2G or 3G connection when we hit a certain download threshold. Even when we're not actively us ...more

Using shortcuts to control the playback of your music on your computer makes life just a little bit easier. Instead of needing to open up an app, we've shown you how to use keyboard shortcuts, a Notification Center widget, and even Siri to control music on your Mac. Now we're ...more

Google's Chrome Remote Desktop, which allows for remote access to your personal computer from your smartphone, has been out for almost a year now. Sadly, it's only been available for Android devices—until now. So, if you got an iPhone (or other iOS device), you can now access ...more

You can find hundreds, if not thousands, of complaints about Wi-Fi performance issues with iOS 8 across all Apple devices. Even I had the issue on my iPhone 5S. The Wi-Fi connection on my router was strong, but I was getting extremely slow speeds. So slow, that I would resort ...more

It's hard enough to keep tabs on the battery life of one device, let alone all of the different gadgets that a typical consumer owns in this day and age. Say your smartphone is running low on juice, so you switch to your tablet only to find out that it's almost dead as well. B ...more

Ever use an open hotspot on your Note 3, only to find out that it's severely restricted to what sites you can access? While getting online with free Wi-Fi is great for those who have a limited data plan, when that one site you absolutely need to visit is blocked, you're left f ...more

It used to be easy to hack tethering—root your device and install a third-party or modded tethering app. But snuck in amongst the changes in Android 4.3, a new data-monitoring service of sorts made its debut. There used to be a time when your data connection was yours. You pai ...more

Apple and Google are not only two of the biggest names in the tech world, but also two of the biggest competitors. So, it's no surprise that you can't watch movies or TV shows purchased from iTunes on an Android device. Likewise, you can't watch any videos purchased on Google ...more

You don't need to be a robot to be overly concerned with battery life, especially if we're talking about Terminators, which have nuclear or hydrogen fuel cells that keep them running for years straight. It will be a long time before smartphones get that upgrade, so in the mean ...more

Even if you have the fastest internet connection in the world, it's not going to be fast if your Android device isn't optimized to use all of the bandwidth. I have pretty fast speeds at home, but every now and then my web surfing on my Nexus 7 tablet is halted in its tracks—fo ...more

The first thing I do when I get a new phone is ditch the USB cable. At least, when it comes to data transfer. My brand new HTC One came with a USB cord that feels sturdy, but like any other cable, it will eventually fall apart from overuse. It will probably still charge just f ...more

Last time, I showed how to start putting together an AC arc welder from scavenged microwave parts, focusing on the transformer modifications. Now, I'll show you how to finish up your DIY stick welding machine by fixing up the electrical system and performing the finishing touc ...more

Cars are quite different than they used to be. Sure, modern cars have some cool things, but repairing them are becoming difficult. Even simple things like changing a headlight bulb. The pontiac G6 is not as hard as some of them, but it can take some time. The headlight is tuc ...more

REQUIREMENTS: LED's,connecting wires,tip 31 transistor,battery,3.5 mm audio jack,soldering machine,soldering wire,soldering paste. Now Make the Connection of Components as Shown Below

I just returned from a trip overseas and I came across this great article over at The Chronicles of Harriet about the role of black men in the evolution of Dandyism. Dandyism rose to prominence at the end of the 19th century, so there's a clear connection to Steampunk. I hope ...more

Sprint has announced that it will be the first U.S. carrier to release Jelly Bean 4.1 for the Samsung Galaxy S III. The over-the-air updates have already started, with users receiving a notification on how to update on their phone. The reason Jelly Bean has garnered so much at ...more

The reason that Facebook is so popular is because it connects us to people that we could have never been connected to before. When people log on, they look for messages, comments, likes, and any other notifications that connect us to those people. These same notifications, tho ...more

Lightning has struck, but not everyone is excited. Apple's new 8-pin Lightning connector for the iPhone 5 has replaced the aging 30-pin connector. Many users have concerns that their current third-party devices will no longer operate properly with the smaller all-digital desig ...more

You must have seen some expensive mp3 players and CD players which have LEDs fixed on them and they dance to the tune looking really pretty. Imagine you could make your own LEDs and configure them to dance to Daft Punk or Swedish House Mafia. I’m going to tell you how it can ...more

Wish your home wireless network was faster? You can always buy a signal booster, but if you'd rather not spend the money, here are a few tips and tricks to speed up your wireless connection, including how to make a homemade signal booster with things you probably already have ...more

I've noticed that a few people using the crypto-currency, Bitcoin are having issues importing private keys to their Bitcoin wallet. This is easy to do and doesn't require anything other than your Bitcoin client/daemon (as of ver0.6.0 ) and the command line. Step 1: Setting Up ...more

Offline maps help you get around an unfamiliar area whenever you anticipate encountering bad cellular reception and no internet connectivity. Google Maps and other map apps have had offline maps for a while now. But Apple Maps only had a little-known caching workaround to prod ...more

Gaming on smartphones has grown considerably since the days of The Impossible Game and original Temple Run. Mobile games can be just as in-depth as console and PC video games, but some of those require external controllers for the best gameplay possible. One controller you can ...more

There are three tiers to Android customization: things you can do by default, things you can do with ADB, and things you can do with root. While root is still pretty tricky to get, ADB mods just got a lot easier. Back in Android 9, Google added a feature that allowed you to w ...more

Mobile gaming has exploded in recent years, with experts predicting 2.4 billion global mobile players by the end of 2019. It already accounts for 47% of the worldwide gaming market, besting console and PC. No wonder we've seen the rise of gaming smartphones, a class of phones ...more

While our time with the Protostar VM from Exploit Exercises was lovely, we must move on to bigger things and harder challenges. Exploit Exercises' Fusion VM offers some more challenging binary exploitation levels for us to tackle. The biggest change is that these levels are al ...more

No more carrying around heavy laptops and thousands of Linux Live CDs and USBs to always be ready for pentesting on the fly! I hope you had a good Christmas and happy new year! Update1: Added the section "weaponizing your Android" where I talk about apps and fundamental Kali ...more

Computer viruses are terrifying. They are undetectable, dangerous, and operate constantly right under your nose. For the average computer user, there are only a few repair options. You could buy expensive antivirus software that causes more problems than it fixes, you can wipe ...more

There are many impressive accomplishments in Minecraft, too many to name in fact. Sprawling builds, complex machines, and massive servers are the hallmark of Minecraft and things keep getting bigger and better. No one doubts the epic scale Minecraft has reached, but every once ...more

Getting files from an Android device to a Mac or iOS device is not always easy or convenient, and the same goes for transferring content from a Mac or iOS device to an Android device. But we're here to tell you there is a better way than using USB cables, email, and cloud stor ...more

If you want to carry a variety of network adapters without looking suspicious, a perfect solution is accessing them through Airserv-ng. Tucked away in the Aircrack-ng suite, this tool allows a hacker to plug any number of network adapters into a Raspberry Pi and access them ov ...more

With a tiny computer, hackers can see every website you visit, exploit services on the network, and break into your Wi-Fi router's gateway to manipulate sensitive settings. These attacks can be performed from anywhere once the attacker's computer has been connected to the rout ...more

Samsung isn't known for its timely rollout of major Android updates, and Android 9.0 Pie won't be an exception. If we go by their Oreo update timeline, we can expect Android Pie to officially touch down for the Galaxy S9 and S9+ sometime around November, with the final version ...more

It's not uncommon for hackers to attempt to move laterally between devices in proximity of a compromised device to maintain a prolonged presence in the network. Malware utilizing USB flash sticks to self-replicate and compromise air-gapped machines isn't a new concept. In bot ...more

We know Android 9.0 will have the formal designation of Pie, following Google's age-old tradition of naming their OS after items you'd normally find on a dessert menu. And thanks to a slew of new features that centers around your overall security, P could also stand for Privac ...more

In the previous article in this short series, we learned how to find our neighbor's name using publicly accessible information and how to monitor device activity on their home network. With this information at our disposal, it's time to get into installing and configuring the ...more

File inclusion can allow an attacker to view files on a remote host they shouldn't be able to see, and it can even allow the attacker to run code on a target. To demonstrate these vulnerabilities, we'll be practicing PHP file inclusion using the Damn Vulnerable Web App. We'll ...more

In October of 2017, Mathy Vanhoef released "Key Reinstallation Attacks: Forcing Nonce Reuse in WPA2." This paper demonstrates a way to decrypt traffic on practically any WPA2 network, the most commonly used form of wireless security (seeing as all other forms of Wi-Fi encrypti ...more

Whether you're riding the subway on your way home from work, or stuck in the backseat of the car on a long road trip, there are times when you need to entertain yourself without a mobile data connection. A good mobile game would pass the time perfectly, but not every game work ...more

It's been a while when the major web browsers first introduced HTTP Strict Transport Security, which made it more difficult to carry Man In The Middle (MITM) attacks (except IE, as always, which will support HSTS since Windows 10, surprised?). SSLStrip and the HSTS Chronicles ...more

Probably SSH is not as clean and fast as other useful tools like netcat, but it has some features which are very useful, and when you'll need them, here's how to behave with that huge amount of computers all over your house. Probably, you already know what SSH means, but for ...more

Jailbreaking gives you root access to the iOS file system, allowing you to install third-party apps and tweaks on your iPhone that aren't available in the App Store. It opens up a whole new realm for what your device can do, but it can also cause instability across the system ...more