How To: Security-Oriented C Tutorial 0x17 - Structs
What's up, peeps? In this quick tutorial, we will be looking at structs, a special kind of data type.
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How To: Security-Oriented C Tutorial 0x13 - Pieces of a Puzzle
Before we begin learning about another vulnerability, we are going to explore printf in a bit more detail. This will be quick little tutorial.
How To: Security-Oriented C Tutorial 0x11 - Command Line Arguments
In many programs on Linux, you'll come across programs which allow you to specify additional arguments instead of just simply running the program by itself. If you've used the Kali distribution, I'm more than certain you'll have come across these with the command line tools, else if you have been following these tutorials, we have already come across three tools which also use the same technique, i.e. gcc, gdb and wc. How do we do this with C? Let's find out.
How To: Security-Oriented C Tutorial 0x0B - User Input
Hey readers! This tutorial will be the entry point for the introduction of buffer overflows. Something like requesting user input is a very common place for vulnerabilities to pop up and we will definitely have fun while trying to make programs crash. But for now, let's start with how we can get input from a user.
How To: Security-Oriented C Tutorial 0x09 - More on Strings
What's up guys! It's time to discuss strings in more detail. Review
How To: Turn Your Old iPhone into a Hidden Live-Streaming Security Camera
If you're tired of your roommate stealing your Cheetos out of the pantry or simply want to indulge in something creepy, then keep reading. With the iPhone 5 finally released, many people will soon be selling or giving away their older iPhones. But should they? Instead of ditching your old iPhone, why not use it to engage in some Big Brother type espionage? There are some really awesome ways to use your old iPhone, but spying on people is definitely the most bang for your buck. First, you'll w...
How To: Lock Any App on Your iPhone Behind Face ID, Touch ID, or Your Passcode for Extra Privacy & Security
Apple does not provide a native way to lock apps on your iPhone behind Face ID, Touch ID, or your passcode. For a long time, we've wanted that option for improved privacy and security, but Apple does allow developers to use its authentication protocols. Apps like Messenger, Outlook, and WhatsApp give the option to lock them down, but for the apps that don't, you can force it with a little time and effort.
How To: Quickly Disable Touch ID on Your iPhone for Extra Security in a Pinch
In the US, law enforcement officials can make you unlock your smartphone with a fingerprint, but they can't force you to input a password or PIN, which would violate your Fifth Amendment rights. To help you from ever being in a scenario where you're forced to put your finger on the Touch ID sensor, Apple has a built-in way for you to disable biometrics on your locked or unlocked iPhone in mere seconds.
How To: Security-Oriented C Tutorial 0x16 - Functions Part IV: Recursion
Hello again, and welcome back to another tutorial on functions, this time, covering recursion. What Is Recursion?
How To: Security-Oriented C Tutorial 0x15 - File I/O
Hello readers, in this tutorial, we will be discussing how to perform file operations such as reading and writing.
How To: Security-Oriented C Tutorial 0x12 - Scope
What's up readers? We have ever so slightly touched upon this concept of scope with variables but still don't really know what it means. In this tutorial we will learn the behaviors of variables existing in our programs and within functions.
How To: Security-Oriented C Tutorial 0x0E - Functions Part II: Memory
In the last tutorial, we learned how to make functions and how they work on the high level. This time, we will take a peek under the hood again, stare deep into its soul and see its ugliness face to face to see how it works in the lower level.
How To: Security-Oriented C Tutorial 0x06 - Operators
Hello again! In this tutorial, we are going to go over something called "operators" which will help us build upon conditions of control structures and also some variable manipulation. Without further ado, let's dive in!
How To: Security-Oriented C Tutorial 0x04 - Control Structures Part I: If Statements
Welcome back to another C tutorial, this post covering the first part of control structures, if statements. Let's get right into it.
How To: Security-Oriented C Tutorial 0xF8 - PE File Infection
How is it goin', fellow 1337 haXX0rZ! dtm here with another article, this time, we'll be looking at infecting PE files, executables in particular for this write-up. Obviously some prerequisite knowledge will be needed since this isn't really newbie-friendly. If you are still a beginner, fear not, it might still be interesting to read! Hopefully!
Security Alert: Your Wireless Mouse or Keyboard Can Be Hacked
If you use a wireless mouse or keyboard, you could be leaving yourself open to attacks from hackers. Researchers at Bastille had discovered in January 2016 that attackers could make use of a cheap $15 antenna to sneak into your computer through a wireless mouse or keyboard dongle (receiver).
How To: Security-Oriented C Tutorial 0xFA - Enhancing Our Crypter
Hello again, readers! In our previous crypter tutorial, we looked at how we could obfuscate our malware (or any program) by using a simple one-byte XOR key. In this quick tutorial, we will be looking at how a simple little tweak can create a better means of obfuscation. Let's get right into it!
How To: Security-Oriented C Tutorial 0xFC - A Simple XOR Encryptor
Welcome to a tutorial on XOR encryption. We'll be looking at what XOR is and how we can use it to encrypt or decrypt data.
How To: Security-Oriented C Tutorial 0x19 - Functions Part V: Passing by Reference
Hello there! This will probably be the final tutorial on functions where we will be looking over a method called pass by reference. This technique allows us to modify large amounts of data without the overhead and return multiple values. Let's go!
How To: Security-Oriented C Tutorial 0xFD - Software on Steroids - Upgrading Our Malware
Welcome back to a tutorial on malware. We'll be discovering a method to beef up our little trooper. Without further ado, let's jump right in!
How To: Security-Oriented C Tutorial 0xFF - An Introduction to Malware
Welcome to an introduction on writing basic malware, an optional sub-series in which I expose you to malware and its technologies. This is written for those who wish to seek a beginning in malware analysis or enlightenment on the subject. We will be justifying the writing and covering types of malware.
How To: Security-Oriented C Tutorial 0x10 - Pointers and Addresses
In previous tutorials we have encountered these things called pointers and addresses but we still don't know what they really are. Let's learn a bit more to clear things up.
How To: Security-Oriented C Tutorial 0x0F - Functions Part III: The Stack
Welcome back to another tutorial on functions. Last time, we looked inside memory to see what functions looked like in the flesh and all that Assembly was pretty nasty. At least you have some exposure to it. This time, we will be examining how functions work with the stack.
How To: Security-Oriented C Tutorial 0x07 - Arrays and Strings
Welcome to another C tutorial. We will be looking at arrays, discussing what they are, when they are used and their special relationship with the char variable. Let's begin.
How To: Security-Oriented C Tutorial 0x02 - Variables && Data Types
Hello again, reader! In this post, we are going to cover some data types and how to declare variables. It shouldn't be too hard so just sit back, relax, grab some popcorn and enjoy the ride (while you still can!).
How To: Security-Oriented C Tutorial 0x01 - Hello, World!
Welcome back, reader! In this tutorial, we will be covering our first program! So let's get to it. We all know the unspoken tradition of the first program when learning a language and of course, here we will respect and complete it. Fire up your favorite text editor (be it vim, emacs, gedit, it's all the same to me, no h8) and try to keep up.
How To: Boost Your Security with a VPN & Private Email Service
Your sensitive personal data should be strongly protected, and it's never more vulnerable than when you are online. The internet connection is a prime avenue of exposure, and email is one of the least secure forms of communication. Fortunately, there is an easy solution to both of those problems.
How To: Security-Oriented C Tutorial 0x18 - Malloc and the Heap
Hey guys, in this tutorial, we are going to learn about the heap segment and how to use it for storing data in our programs. We will also go into the details of its use in conjunction with the char pointer and struct data types.
How To: Security-Oriented C Tutorial 0x14 - Format String Vulnerability Part I: Buffer Overflow's Nasty Little Brother
What's up readers? Today I'll be introducing to you a new vulnerability called the Format String vulnerability (in case you missed the title). It won't be much, just a little motivation to keep you guys going. A little teaser, if you may.
How To: Security-Oriented C Tutorial 0x0D - Functions Part I: Introduction
Welcome to a tutorial explaining functions. This article will help clarify some things we have already been exposed to such as function prototypes, function calls, return values, etc.
How To: Security-Oriented C Tutorial 0x08 - A Trip Down Memory Lane
Before I continue with a topic on strings, we first require some fundamental understanding of how memory works, i.e. what it is, how data looks in memory, etc. as this is crucial when we are analyzing vulnerabilities and exploitation. I highly suggest that your mind is clear and focused when reading the following article because it may prove to be confusing. Also, if you do not understand something, please verify all of your doubts, otherwise you may not completely understand when we touch on...
How To: Protect Your iPhones & iPads by Installing Apple's Emergency 14.8 iOS Security Update
With all of the hype around the new iPhone 13 series and new iPad and iPad mini unveiled this week, it would be easy to overlook a very critical update for the device you already have in your pocket.
How To: Lock Your Apple Watch with a Passcode to Increase Security & Keep Prying Eyes Out
While there isn't as much personal data residing on your Apple Watch as there is on your iPhone, it's still a good idea to set a passcode for it and lock it up when you're not using it. If you don't, while it's charging or otherwise off your wrist, others may be able to sneak a peek at your activity, messages, emails, and other personal details. Plus, you won't be able to use Apple Pay without one.
How To: Security-Oriented C Tutorial 0x21 - Linked Lists
Welcome to the final tutorial of the series on standard C. This article will cover the linked list abstract data type (ADT). There will be a lot of abstraction to try to deliver the understanding in the most basic way for easiest interpretation of what they are and how they work, then we will get into the guts of it and learn the technical code underneath. For those who have yet to grasp the concept of pointers, it's advisable that you do that first before approaching this. Having learned thi...
How To: Security-Oriented C Tutorial 0xFB - A Simple Crypter
Welcome to a tutorial on crypting technology. In this article, we will be discussing types of crypters, how they work and why they work. After defining these, we will then make our own basic crypter using the function I gave to you as a task to complete by yourself in the previous tutorial.
How To: Security-Oriented C Tutorial 0x0C - Buffer Overflows Exposed!
Welcome finally, to a tutorial on buffer overflows! At last we have reached an exciting part of this series where I will dedicate the entire article on explaining and exploiting the notorious vulnerability. Grab some popcorn, sit back and enjoy the show.
How To: Apply online for Social Security retirement benefits
When you decide its time to retire, you will most likely need to cash in your Social Security benefits. In this official two part tutorial, presented by the American Social Secuity Administration, learn exactly how to use their website and apply online. Applying online is very easy, and takes a lot less time than applying in person. By applying online for social security, you will bypass all of the long lines and waiting that usually happens in one of the offices. Plus, you won't ever have to...
How To: Hack security cameras using Google Search
There's nothing more tedious, yet exciting, than watching surveillance cameras at work. They prey on the innocent and the unknowing. They protect businesses, workplaces, and homes. They catch criminals in the act, find hilarious anomalies, and are just darn cool when you're not the one that's supposed to be eavesdropping with them.
How To: Do the Breach of Security Prank on Someone at a Superstore
Kipkay has developed a shoplifting prank, and all you need is a little electromagnetic strip to play this prank at Walmart (or wherever). You also need to bring a magnet. You swipe the strip thirty times with the magnet and this will actually magnetize the strip. Use this as inspiration for one of your April Fools Day pranks!
How To: Build a fake cardboard security camera
Home security is as important as having a job. You have to protect your family and your valuables. If you can't afford a high tech security system, then maybe a fake security camera will do the trick. This security camera dud is also a cheap alternative for a film prop. Watch this video tutorial to learn how to build a fake cardboard security camera.