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Exploit Development: How to Manipulate Code Execution with the Instruction Pointer

The one thing that separates a script kiddy from a legitimate hacker or security professional is the ability to program. Script kiddies use other people's tools, while hackers and security pros write their own tools. To that end, we're going to see how a stack overflow vulnerability allows us to flood a variable with enough input to overwrite the instruction pointer with our own commands.

Basics of Ruby: Part 1 (Data Types/Data Storage)

Ruby is a dynamic, general-purpose programming language created by Yukihiro "Matz" Matsumoto in Japan around the mid-90's. It has many uses but with it's flexibility, it makes a great language to write exploits in. In fact, the entire Metasploit Framework is written in Ruby! The sole purpose of this series is to teach hackers the basics of Ruby, along with some more advanced concepts that are important in hacking.

Exploit Development: How to Learn Binary Exploitation with Protostar

Being able to write your own hacking tools is what separates the script kiddies from the legendary hackers. While this can take many forms, one of the most coveted skills in hacking is the ability to dig through the binary files of a program and identify vulnerabilities at the lowest level. This is referred to as binary exploitation, and today we're going to check out a tool known as Protostar.

How To: Linux Basics for the Aspiring Hacker: Configuring Apache

Welcome back, my hacker novitiates! In an earlier Linux Basics tutorial, I had demonstrated the basics of the Apache web server. Since Apache is the world's most widely used web server on the Internet (as of July 2015, Apache was 38%, IIS was 26%, and Nginx is 15%), the more you know about it and understand it, the more success you are likely to have hacking it.

How To: Simplify radicals which are not perfect squares

Need help reducing radical expressions without perfect square or cube roots? Take heart: this free math lesson will ensure that you know everything you need to know for that next big test. Examples include square roots, cube roots, and 4th roots. You'll also learn a technique to simplify n-root expressions as well as how to simplify variables in radical expressions.

How To: Make ADB & Fastboot Work in Any Folder on Windows

Unless you're experienced using the Linux terminal, running ADB and Fastboot commands can get confusing very fast. The problems often stem from having to hunt for various files — usually IMG or ZIP files that you need to mod your Android phone — and then move them to your platform-tools folder, which, depending on how you installed ADB in the first place, could be anywhere.

How To: Take Control of the Mouse & Keyboard in Python

While hackers adore the command line, working with the GUI (graphical user interface) of an operating system has some advantages. This is especially true when it comes to post-exploitation. When we can control the mouse and keyboard of a remote computer, we can truly say we have complete control over the device. Today, I'm going to introduce to you the PyAutoGUI module, which does just that, and just how much fun you can have with it!

How To: Factor and collect like terms

In this video, the instructor shows how to collect like terms and factorize. When you are given a linear equation, the first thing you do is to try to organize it. Pair up the like terms. Add the numerical coefficients of terms with the same variables. This is called collecting the like terms. In case you see any common factor across all the terms, pull it out and tag it to the parenthesis. In this way, you can factorize the equation. Next, bunch together your like terms and sum them up. The ...

How To: Get breast implants

There is a wide rage of variables to consider when considering getting breast implants. This includes everything from if you are a good candidate, the type of implants, the size of the implants, the type of surgery, the size and the possible side-effects.

How To: Seize Control of a Router with RouterSploit

A router is the core of anyone's internet experience, but most people don't spend much time setting up this critical piece of hardware. Old firmware, default passwords, and other configuration issues continue to haunt many organizations. Exploiting the poor, neglected computer inside these routers has become so popular and easy that automated tools have been created to make the process a breeze.

How To: Get Started Writing Your Own NSE Scripts for Nmap

The road to becoming a skilled white hat is paved with many milestones, one of those being learning how to perform a simple Nmap scan. A little further down that road lies more advanced scanning, along with utilizing a powerful feature of Nmap called the Nmap Scripting Engine. Even further down the road is learning how to modify and write scripts for NSE, which is what we'll be doing today.

How To: Program a $6 NodeMCU to Detect Wi-Fi Jamming Attacks in the Arduino IDE

Hackers and makers are often grouped under the same label. While hackers draw on computer science skills to write programs and find bugs, makers use electrical engineering to create hardware prototypes from microprocessor boards like the Arduino. We'll exercise both sets of skills to program a $6 NodeMCU to display the status of a Wi-Fi link via an LED, allowing us to monitor for jamming attacks.

How To: Perform Directory Traversal & Extract Sensitive Information

With all the web applications out on the internet today, and especially the ones built and configured by novices, it's easy to find vulnerabilities. Some are more perilous than others, but the consequences of even the slightest breach can be tremendous in the hands of a skilled hacker. Directory traversal is a relatively simple attack but can be used to expose sensitive information on a server.

How To: Use Beginner Python to Build a Brute-Force Tool for SHA-1 Hashes

Developers creating login systems know better than to store passwords in plain text, usually storing hashes of a password to prevent storing the credentials in a way a hacker could steal. Due to the way hashes work, not all are created equal. Some are more vulnerable than others, and a little Python could be used to brute-force any weak hashes to get the passwords they were created from.