How To: Security-Oriented C Tutorial 0x03 - Bits, Bytes, Broken?
Hey there, reader! In this tutorial we are going to explain how values are stored in variables as either signed or unsigned. Try to not get lost!
Hey there, reader! In this tutorial we are going to explain how values are stored in variables as either signed or unsigned. Try to not get lost!
If you're anything like me, the urge to bake comes in waves. Winter constitutes an especially large wave; when I need to put on a few extra pounds for insulation, I go a bit carb crazy and take any opportunity to make breads, pies, and cakes.
I think it was 1986 when I first discovered my love for making computers say stupid things out loud. My older brother got a Commodore 64 for his birthday, which came bundled with software that would speak out any term you typed in—and boy, that computer sure made a fool of itself after my five-year-old imagination got a hold of the keyboard.
Welcome back, my fledgling hackers! Over the years, we have examined multiple ways to own, exploit, or compromise a system. On the other hand, we have not spent a lot of time on denial-of-service (DoS) attacks.
This is second post in my series of posts for finding hacked accounts online. Please do read the part 1 of the post at http://null-byte.wonderhowto.com/how-to/find-hacked-accounts-online-part-1-0164611/
Last year, the Washington Post's Ashley Halsey wrote an article on what really happens to your luggage at airports. In it, they unwittingly published a photo of the master keys the TSA uses for TSA-approved baggage locks. Now, thanks to that picture and a French lock-picking enthusiast, anyone with a 3D printer can make their own master keys to unlock any TSA-recognized locks.
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 whether we can make it crash or overflow. This process is known as fuzzing. It is often the first step to developing an exploit, as we need to find some variable that is susceptible to overflowing.
I'm sure that many of us have heard of that nasty Shellshock vulnerability, but not very many people know how to exploit it. Try these few tricks on vulnerable websites!
If your iPhone is rebooting or your Messages app is constantly crashing, you might be the victim of an iOS exploit or just a buggy software update. While one problem sounds worse than the other, they both can get annoying real quick when you can't send any messages or even read new ones.
Doxing is the act of finding one's personal information through research and discovery, with little to no information to start with. You may have seen doxing in the news, for instance when not so long ago, hacker team Anonymous doxed and reported thousands of twitter accounts related to ISIS. Doxing can be useful for finding the address of a coworker, or simply investigating people on the internet. The tutorial I will provide to you now will teach you the basics of doxing and how you can prot...
Injustice: Gods Among Us is one of the most popular games to come out over the last couple of years. It was a hit on video game consoles, and it's got a solid 4.5 rating on both Google Play and the iOS App Store, with almost 2 million people rating the game combined.
Welcome back, my novice hackers! New hackers often ask me the same question: "What is the easiest platform to hack?" My response is always the same—it is not a platform, but rather a particular piece of software that is easiest to hack, which is on nearly every client-side system. That software is Adobe Flash Player.
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.
If you're anything like me, every time you travel you end up in a desperate panic for a decent W-Fi connection. Whether you want to post your photos, research the best beaches, or kill time during an overnight layover, a hotel's Wi-Fi quality is of paramount significance in making a reservation.
Chances are you've got a bunch of wooden takeout chopsticks doing nothing but cluttering up your utensils drawer. That's a darned shame, considering that chopsticks aren't just for shoveling food into your mouth—they're actually the best cooking tools a cook can have (plus they come in handy when you run out of extra-long matches). Sautéing, Grilling, Deep Frying, & Stir-Frying
April Fool's Day, aka National Screw with Your Friends Day, is finally here. You can always pull a conventional prank, like strategically placing a whoopee cushion on your mom's chair, but that joke has been exhausted generations before smartphones were around. We live in a day and age where smack cam is the new level of pranking, so it's time to step your game up, novices.
If you've never played Cards Against Humanity, it's time to get initiated. Originally funded through Kickstarter, the free to download card game is basically an obscene version of Apples to Apples.
Pretty soon, every restaurant and store you walk into will know exactly what you're doing. Retail analytics companies like Euclid, ShopperTrak, RetailNext, and Prism Skylabs have penetrated hundreds of food shops and retail stores across the country, installing sensors that track and log customers' moves while they dine and shop.
A long time ago, we recommended the Hover Zoom extension for Chrome as an easy way to blow up small image thumbnails without actually have to "click" on the images themselves. Over the past year, there have been reports that Hover Zoom now collects and sells your browsing data to third-party advertisers without your consent.
One of the biggest problems in data security is authentication of data and its source. How can Alice be certain that the executable in her inbox is from the venerable Bob, and not from the not-so-venerable Oscar? Clearly Alice wants to know because if this file is actually sent to her by Oscar, the file might not be a game, but a trojan that can do anything on her computer such as sift through her email and passwords, upload her honeymoon pictures, or even turn on microphones and webcams. Thi...
A well-executed jack-o'-lantern can be pretty damn impressive, but some of us lack the carving skills necessary to pull it off and end up disappointed. Sometimes you just don't want to put in all the time required to cut open a pumpkin, gut it, and chisel an elaborate face or cool design into it.
Welcome back, my budding hackers! One of the most time-consuming, but necessary, activities in hacking is reconnaissance. Before we can hack a system, we need to know what operating system it's running, what ports are open, what services are running, and hopefully, what applications are installed and running.
While Siri has never been my favorite, after using her in the new iOS 7, I have definitely become a fan. If you want to know why, check out the newest cool features that Siri has to offer!
Welcome back, my rookie hackers! Many newbie hackers focus upon the technical aspects of hacking and fail to give enough attention to social engineering. In fact, I would say that technical hacks should ONLY be attempted if social engineering attacks fail. Why bother spending hours or days trying to hack a password if someone will simply give it to you?
Russians are well known for their knack at documenting exciting and horribly beautiful events on the go, from insane car accidents to attempted insurance fraud and even a superbolide meteor streaking across the sky.
Welcome back, my rookie hackers! When Wi-Fi was first developed and popularized in the late '90s, security was not a major concern. Unlike wired connections, anyone could simply connect to a Wi-Fi access point (AP) and steal bandwidth, or worse—sniff the traffic.
Most of us have conducted an investigatory science project without even knowing it, or at least without knowing that's what it was called. Most science experiments performed, from elementary to high school students and all the way up to professional scientists, are investigatory projects.
Do you ever wonder how all these celebrities continue to have their private photos spread all over the internet? While celebrities' phones and computers are forever vulnerable to attacks, the common folk must also be wary. No matter how careful you think you were went you sent those "candid" photos to your ex, with a little effort and access to public information, your pictures can be snagged, too. Here's how.
When browsing the web, I enjoy my privacy. It's reassuring that I can peruse the internet without the worry of having my activity tracked back to me, allowing me to leave fun, anonymous comments when I get the urge to troll.
Let's say that you've got the look down, and you have your Steampunk props all ready to go. Congratulations! You're a Steampunk!
Notes: My guides are setup like old Lego instruction booklets; picture intense/text lacking. Just remember you're building from the ground up, each step is a layer to go onto the previous layer.
Introduction So today and yesterday I was playing with TNT (as we all do at one point or another) and I was curious about a few things. From this curiosity, I went on to discover some of the science behind some things you may or may not have known.
Introduction So, today and yesterday I was playing with TNT (as we all do at one point or another) and was curious about a few things. From this curiosity, I went onto discover some of the science behind some things you may or may not have known.
These days, using Reddit on your iPhone is just as good, if not better, than Redditing on a desktop browser. While there's an official Reddit app for iOS, there are plenty of third-party clients that have similar features as well as custom perks to enhance the experience. But figuring out which Reddit client is best for your daily use can be a lot of work — work that we can make easier on you.
Tapping your pencil? Hearing the rhythm in every action you take? Learn how to do random object and bucket drumming techniques in this free video.
The Mad Hatter from Tim Burton's Alice in Wonderland not only makes a great costume but a great project. The hour-glass shaped hat, the striped pants, the fingerless gloves, and the Hatter's signature scarf are the most important components in this costume. If you're fairly skilled with costuming already, this shouldn't take more than four or so hours.
Individually addressable LEDs, also commonly called "NeoPixels" after the popular Adafruit product, are a bright and colorful way to get started with basic Python programming. With an inexpensive ESP8266 or ESP32 microcontroller, it's easy to get started programming your own holiday lighting animations on a string of NeoPixels with beginner-friendly MicroPython!
A low-key iPhone feature that's been around since iOS 10 can make the iMessages you send to family and friends more exciting overall. One particular element is, if you'll forgive my decades-old slang, "da bomb" for emoji.
Having thousands of photos and videos in your Photos gallery can make it difficult to find the best ones, but your iPhone does make it a bit easier. Memories, which have been around since iOS 10, automatically group your photos and videos into mini-movies by location, date, or person. It's a fun feature that does the work for you, and it's getting better with the release of iOS 15.
Apple's iOS 14 introduced a new world of iPhone customization thanks to its updated widgets that can live on both the home screen and Today View. While they're incredibly useful, they're not very interactive, they restrict what's shown, and you can't resize them afterward. However, those issues pale in comparison to the annoying Photos widget in Today View's auto-generated Smart Stack.