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.
Welcome back, my aspiring hackers! In many of my earlier tutorials, I mentioned the complementary nature of hacking and forensics. Both disciplines, hacking and forensics, benefit from a knowledge of the other. In many cases, both disciplines will use the same tool. In this tutorial, we will use another tool that can be used in either discipline—Sysinternals—a suite of tools developed by Mark Russinovich.
Hi everyone. Recently I've been studying some topics about Assembly, memory and exploitation, and thought I could write something nice, easy and fast about it, just because I like to share what I learn, and probably sharing what you learn and trying to explain it to a stranger is the best way to learn it better. It worked for me, and I hope it will be useful for you too.
The ability to make a meal for yourself used to be one of those life skills you had to learn or otherwise you would starve, but the rise of convenience foods, takeout, and other aspects of modern living have made it entirely possible to be a grown person and not know what to do in the kitchen.
In recent years, Hollywood has taken a shine to hackers, with hackers appearing in almost every heist or mystery movie now. This can be both good and bad for our profession. As we know, whichever way Hollywood decides to depict our profession is how most people will perceive it.
By now, you've probably already installed 10.10 Yosemite, the newest version of Mac OS X, on your computer. While you most certainly noticed the visual changes, you might have missed some of the really cool additions.
The paper towel is a wondrous invention. It allows cooks to wipe up really gross stuff without having to constantly do laundry and drain fried foods so they're crunchy and crispy instead of oily and heavy. But did you know that your humble paper towel has several other uses besides the obvious ones? Read on to find out these essential hacks.
Third-party ROMs like CyanogenMod are the ultimate form of customization for softModders. Hard-working developers offer us alternate Android experiences to replace our often bloatware-riddled stock ROMs.
Alright, I'll admit it, iOS can be quite nice. Android loyalist that I may be, I'm not so stubborn that I can't recognize a good thing when I see it. Apple's iOS has a lot of strengths, and our Nexus 4s, god bless 'em, are growing a little long in the tooth.
If you're marginally inclined towards computers, you've probably been approached at some point by a family member who wants you to "fix" their system during a visit home. With the holidays coming up, these opportunities (or ambushes) are even more likely.
Back in 1996, the Super Nintendo had pretty much reached its end of life, since everyone in the Mario club began switching from 2D to 3D gaming. The third home console by Nintendo, the Nintendo 64 (N64), ushered in the new 3D gaming generation of Nintendo fanatics, paving way for the Wii.
There are quite a few flaws with Apple's mobile products, and one that drives me crazy is their reliance upon iTunes for all your music syncing needs. If you want a song on your iPhone, you pretty much have to use iTunes to get it on there. Either that or buy it directly from the iTunes app on your device.
Are you interested in beginning research of your family's history? I began this journey about 3 or 4 years ago and here is what I found. I've done almost ALL of my research online, and gotten farther, faster and more comprehensively than anyone else who has researched my family the old fashioned ways. This is the kind of thing that technology is made for. Here's how to use it.
First off, don't be frustrated. YOU CAN DO IT! Contrary to the message in the image above, it's NOT over. It's just beginning. And when it comes to solving the New York Times crossword puzzle, the old cliche does apply: practice makes perfect.
Apple just made it easier to change a widget's size on your iPhone's Home Screen, so you no longer have to delete widgets and add different-sized versions of them. With iOS 18, you can adjust a widget's size straight from its current widget size on your Home Screen. The new method also works on iPad with iPadOS 18.
Important emails can slip through the cracks in any email client, especially sent emails you were expecting responses to but never received — and ultimately forgot about. Apple has an easy solution for this problem, helping you get answers in Mail for all your pending questions.
Sure, you can remove apps from your iPhone's Home Screen without deleting them. But there's something satisfying about seeing them laid out and well-organized on the Home Screen, just a tap away, especially if you use user-selectable or custom icons for all your apps. Still, there may be days or situations when you want to hide apps without removing them entirely from the Home Screen.
Apple includes a lot of helpful features for iCloud email addresses, but one of its best-kept secrets will give you total control over organizing your inbox like a pro.
The latest 17.4 update for Safari includes a prompt for EU users to choose a different default web browser available in their region. It also gives us new ways to customize the Favorites Bar on an iPad. And Apple Cash virtual numbers are now supported as an AutoFill suggestion. But there are also some hidden changes in Safari 17.4 for iOS and iPadOS that you might not ever notice unless you keep reading.
If you're still using a third-party task manager on your iPhone, you might want to check out Apple's updated Reminders app. With each new update, Reminders gets more powerful yet remains one of the simplest task managers to use, and iOS 17's new to-do list features reinforce that statement.
Handwritten notes are no doubt useful at home, work, and school, but digitizing them with your smartphone will make them easier to edit, organize, and review. You'll also always have a digital copy ready if your handwritten notes get lost or erased. And Google Keep for Android, iOS, or iPadOS makes the conversion from physical form to digital a cinch, especially when it comes to checklists.
There are two types of people in this world: those who recognize Wordle grids of yellow, green, and gray/black blocks and those who do not. No matter which category you fall in, there's a Wordle-inspired game that's perfect for you.
The standard way to sort your notes and to-dos in Reminders has always relied on you putting them in the correct list and group. Then came smart lists for flagged and scheduled tasks, followed shortly by a smart list for tasks assigned to you. In iOS 15, Apple brings yet another way to find your reminders more easily — tags.
There has been drag-and-drop functionality for iPhone since at least iOS 11, but iOS 15 adds a new ability that makes essential emails even easier to find when you need them.
If you're not planning to upgrade to a new iPhone 13, the new version of the iPhone operating system will breathe some new life into your iOS device.
Apple introduces several new privacy settings with iOS 15, including the ability to better manage the metadata in your photos. With just a few taps, you can effectively spoof a photo's geolocation and change its creation date and time, providing a sort of disguise over your personal information. If you constantly take and share photos, it's a welcomed feature, but its results are not permanent and can be reversed.
While Touch ID has been a part of the iPhone's legacy since 2013, Apple waited until 2016 to add biometrics to its MacBook lineup, and it's not as impressive. An iPhone with Touch ID can register up to five fingerprints, but Macs can only register a maximum of three per account. If that seems unfair, there's an easy trick to doubling that number, meaning six of your fingerprints could unlock your laptop!
Since iOS 11, your iPhone has been capable of offloading hardly used apps to free up storage space for more useful data. But offloading only gets rid of the app's binary, meaning its documents and data are stored on your device in case you reinstall the app. That can take up a lot of space itself, so it's good to periodically review files for offloaded apps and purge the content you no longer need.
A slideshow is a tried-and-true way to show off pictures and videos from your adventures, whether it's a long trip overseas, an extravagant wedding, or a quick hiking trip up a mountain. However, in iOS 13 and under, you could only start a slideshow from a photo or video or choose media individually to include in one. But iOS 14 makes it even easier to do in your iPhone's Photos app.
When it comes to posting to social media from your smartphone, the process is typically the same. Find the app. Open the app. Tap the app's version of the compose button.
The Snapdragon version of the Galaxy Note 20 and 20 Ultra — the one sold in the US — can't be rooted. Without root, the level of customization is limited. Such a large group of Android users shouldn't miss out on mods, and they don't have to.
Your iPhone's home screen just got a whole lot more exciting thanks to iOS 14, which is finally giving Android a run for its money in terms of home screen customization. What's new? Widgets in three different sizes, a new searchable App Library, and most importantly, the ability to hide entire home screen pages.
You can easily remove audio from videos in the Photos app on your iPhone, but the same cannot be said about removing video and just keeping the audio track. However, another stock Apple app can help extract the sound clip, and it barely takes any work to set it up.
Google Photos is one of the most useful apps for storing, sorting, searching, and sharing all of the photos and videos you capture on your smartphone — but if you travel, it just got a lot more useful.
Everything you post on social media lives there forever — even if you delete it. Just ask anyone that's ever posted something stupid. Instagram does not provide built-in tools to save or download images and videos from other users, but there are workarounds. Third-party tools make saving other people's photos and videos easy, and there are always screenshots.
For enterprise augmented reality platform makers, remote assistance apps represent one of the greatest opportunities to show off the power of immersive computing. These apps enable experts to guide front-line workers or customers with AR prompts and other content in the field of view of their smartphones or smartglasses.
Router gateways are responsible for protecting every aspect of a network's configuration. With unfettered access to these privileged configurations, an attacker on a compromised Wi-Fi network can perform a wide variety of advanced attacks.
You're a busy, on-the-go professional, so you deserve an email client that keeps up with you. "Mail" on iPhone wasn't always the best option, but thanks to iOS 13, it feels like a completely different app. That said, there are plenty of alternatives that offer a different experience. Better yet, these apps are free. You won't need to spend a dime to try them out for yourself.
Every summer for the last 26 years, hoards of hackers have descended on the Las Vegas Strip for DEFCON, the biggest hacker conference in the US. There's a wealth of talks every season (DEFCON 27 has at least 95 scheduled), and there have been some essential topics to learn from in past discussions. We've dug through the last ten years and found the 15 most popular talks you should watch.
Open-source intelligence researchers and hackers alike love social media for reconnaissance. Websites like Twitter offer vast, searchable databases updated in real time by millions of users, but it can be incredibly time-consuming to sift through manually. Thankfully, tools like Twint can crawl through years of Twitter data to dig up any information with a single terminal command.
