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Hack Like a Pro: How to Build Your Own Exploits, Part 3 (Fuzzing with Spike to Find Overflows)

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.

How To: The Ultimate Guide to Using TWRP: The Only Custom Recovery You'll Ever Need

Just the fact that you own an Android device means you're privy to an entire world of third-party development. Many of the mods you'll see here on Gadget Hacks can be performed fresh out of the box, but with root and Xposed, the list grows longer. But to truly be able to take advantage of all that Android's massive development community has to offer, you'll need to have a custom recovery installed.

How To: Understanding Signature Schemes: How Data Sources Are Authenticated, Secured, & Spoofed

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...

How To: Build Wonder Woman's Armor for Halloween

Wonder Woman has always been a Halloween and cosplay staple. It's a costume that's both dependable and stylish — just like the Amazon who wears it. This year's reprise with Gal Gadot offers a fresh take on the old standby, with more muted colors, a tougher demeanor, and a decided lack of stars or stripes. Tahnee Harrison from CineFix's DIY Costume Squad has come up with a compromise between the old and new costumes. It's got the cut, styling, and details of Gal Gadot's 2017 costume, but the b...

How To: Apple Lets You See All the Ratings & Reviews You've Ever Given Apps, Games, Movies, TV, Music, Podcasts & Books

Voicing your displease with a shoddy third-party app or professing your love for an album you've just bought is normal, which is why we have ratings and reviews. You hate something, you write something. You love something, you rate it. But feelings change over time, so your ratings or reviews may need to be updated.

Coinbase 101: Fees & Fine Print You Need to Know Before Trading Bitcoins & Other Cryptocurrencies

Coinbase is the primary go-to for many users when it comes to investing in Bitcoin (BTC), Ethereum (ETH), Litecoin (LTC), Ripple (XRP), and more, due to its user-friendly interface. But before you join them, know that the ease of use comes with a price. Coinbase charges fees for each transaction, and your bank might even add charges on top of that. Plus, there is some fine print to be aware of.

How To: Activate Your Samsung Galaxy's Vault to Keep Your Apps, Files, and History Safe from Prying Eyes and Hackers

One UI has an exciting privacy feature that lets you lock apps, photos, videos, and files on your Galaxy device behind Samsung's defense-grade Knox security platform. Only you can unlock it using a pattern, PIN, or passcode, or with biometrics like fingerprint and iris locks. It's like having a safe built right into your smartphone, and it couldn't be easier to set up.

How To: The Easiest Way to Download High-Res Cover Art for Albums, Movies, Books, Podcasts, Apps & More — Right from Your iPhone

The internet is saturated with low-quality pictures, making it difficult to find a high-resolution image for specific albums, TV shows, movies, podcasts, music videos, apps, and books. Apple uses high-quality images, but it seems impossible to download cover art, posters, thumbnails, icons, and other images from within its apps on your iPhone. Now, with the help of a shortcut, it's as simple as can be.