During our last adventure into the realm of format string exploitation, we learned how we can manipulate format specifiers to rewrite a program's memory with an arbitrary value. While that's all well and good, arbitrary values are boring. We want to gain full control over the values we write, and today we are going to learn how to do just that.
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.
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!
As many of you know, processor's clock frequency improvement got stuck in about 2003, causing the origin of multicore CPU (and other technologies). In this article I'll introduce you on how to run code simultaneously in various processors (I suppose that all of you have a multicore CPU). When you write code without any parallel directive, it only executes in one CPU at the same time (see it below). OpenMP make simple to work with various cores (if not with all of them) , without so much heada...
Welcome back, my hacker novitiates! There are many ways to hack databases, and most of these techniques require SQL injection (SQLi), which is a way of sending SQL commands back to the database from a web form or other input. In this tutorial, we will use SQL injection to get access to the underlying server. So instead of getting access to the database and its data, we will use the database as an intermediary to gain access to the underlying server.
Last time in how to train you python, we covered the basics of variables and output. While we were covering variables, we talked briefly about strings. "String" is just a fancier way of saying "Word". A string is simply a set of characters encased in quotations, this lets python know that it is a word. Sometimes when we do things with strings we'll need to change them in order to do something. Python is case sensitive, for example "Null-Byte" is not the same as "null-byte". This is where mani...
Video: . Project Overview
Welcome back, my aspiring hackers! Those of you who use Windows in a LAN environment understand that Windows machines can share directories, files, printers, etc. using "shares." This protocol dates back to the 1980s when the then dominant computer firm, IBM, developed a way for computers to communicate over the LAN by just using computer names rather than MAC or IP addresses.
Welcome back, my fledgling hackers! Nearly every commercial enterprise worth hacking has an intrusion detection system (IDS). These network intrusion detection systems are designed to detect any malicious activity on the network. That means you!
If you're getting into automation, Bash scripting is usually the way to go. However, there are a couple of limitations, and one of them is logging into another device like a Raspberry Pi and running a script automatically. To help in those situations, we're going to automate delivering an SSH payload with an "expect" script.
Python is commonly touted as one of the best programming languages for beginners to learn, and its straightforward syntax and functionality makes that hard to argue with. But a lot of tutorials still use Python 2, which is outdated now. Python 3 introduces many new features, and it's important to be aware of them going forward, as well as the key differences between Python 3 and its predecessor.
UnrealIRCd is an open-source IRC server that has been around since 1999 and is perhaps the most widely used one today. Version 3.2.8.1 was vulnerable to remote code execution due to a backdoor in the software. Today, we will be exploiting the vulnerability with Metasploit, examining the underlying code to understand it, and creating our own version of the exploit in Python.
One of the most critical bugs to come out in the last five years was Shellshock, a vulnerability which allows attackers to execute arbitrary code via the Unix Bash shell remotely. This vulnerability has been around for a while now, but due to the ubiquity of Unix machines connected to the web, Shellshock is still a very real threat, especially for unpatched systems.
Now that we have installed the toolkit, set up our prefabs, and prepared Unity for export to HoloLens, we can proceed with the fun stuff involved in building a dynamic user interface. In this section, we will build the system manager.
Welcome back, my tenderfoot hackers! As you should know from before, Snort is the most widely deployed intrusion detection system (IDS) in the world, and every hacker and IT security professional should be familiar with it. Hackers need to understand it for evasion, and IT security professionals to prevent intrusions. So a basic understanding of this ubiquitous IDS is crucial.
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.
Welcome, in this tutorial we shall we looking at creating a safe(r) way to back up your important files. The contents we will be covering are as follows;
Apple's grand reveal of iOS 8 at WWDC in San Francisco is still a few days away, but that doesn't mean there isn't any speculation as to what features and enhancements might come packed in the new mobile operating system.
Choosing which programming language to learn next can seem like a nearly impossible task, regardless of whether you're a novice developer or a seasoned coding pro with years of experience creating apps and websites. But if you haven't already learned Python, look no further.
Microsoft Excel is one of the most powerful programs for modern businesses. By allowing you to manage, sort, and analyze large collections of data, Excel provides an essential service for any company interested in using the power of data science to its advantage.
An incorrectly scaled object in your HoloLens app can make or break your project, so it's important to get scaling in Unity down, such as working with uniform and non-uniform factors, before moving onto to other aspects of your app.
Welcome back everyone. This article isn't going to contain anything related to scripting, but rather some updates about the series. We'll be quickly discussing what we've covered so far and what is to come.
In the last Ruby article, we talked about how to store information in three different kinds of storages: variable, array, and a hash. After we get the data, we have many ways of using them, but, for right now,
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 hacker apprentices! Metasploit framework is an incredible hacking and pentesting tool that every hacker worth their salt should be conversant and capable on.
Before lead was removed from gasoline, lead from car exhaust got into the air, was breathed in by kids, lowered their IQs, and increased crime rates (there is a very strong correlation between IQ and criminal behavior).
The most common Wi-Fi jamming attacks leverage deauthentication and disassociation packets to attack networks. This allows a low-cost ESP8266-based device programmed in Arduino to detect and classify Wi-Fi denial-of-service attacks by lighting a different color LED for each type of packet. The pattern of these colors can also allow us to fingerprint the tool being used to attack the network.
Format strings are a handy way for programmers to whip up a string from several variables. They are designed to save the programmer time and allow their code to look much cleaner. Unbeknownst to some programmers, format strings can also be used by an attacker to compromise their entire program. In this guide, we are going to look at just how we can use a format string to exploit a running program.
Apple added "Announce Messages with Siri" with the release of iOS 13.2, and it came as a welcome surprise for me; I missed the feature from its initial run during iOS 13 beta testing. However, while users online gleefully showed off their newfound Announce Messages with Siri capabilities, I was frustrated to see that I didn't have the setting, even though I just updated my iPhone to 13.2. So, what's the fix?
Designing and manufacturing waveguides for smartglasses is a complex process, but DigiLens wants us to know that they have a software solution that partially solves that problem.
We used to view homemade dressings as something whose variables of flavor and texture outweighed our desire to make them up on the fly. We often found ourselves nervous that they'd come out too runny or too tart or even too thick.
OK, In my last Tutorial we made a Server for sending Instructions to a Client. This time we will build the Client. Fire up your favourite Python environment and get the Code here.
Recently, I've been learning Ruby as a second scripting language. But one topic I never covered with the many lessons online were sockets. So I did some research and came up with a very simple client/server connection that sends a string over the socket.
The new Samsung Galaxy S4 has something no other phone has ever had before—weather sensors. Older devices like the Galaxy Nexus, S3, Note, and Note 2 do have a atmospheric pressure sensor, aka a barometer. However, they do not have a thermometer or hygrometer like the GS4 does, which measures ambient temperature and humidity.
There are many ways to calculate basic math problems and solve algebraic equations, geometric expressions, and trigonometric functions on your iPhone, but Apple just came out with one that will blow you away.
Microsoft's built-in antimalware solution does its best to prevent common attacks. Unfortunately for Windows 10 users, evading detection requires almost no effort at all. An attacker armed with this knowledge will easily bypass security software using any number of tools.
Antibiotic use in infants has been associated with a host of childhood conditions later in life. Yet when an infection is suspected in a newborn, usually a sample of their blood is drawn to check for the presence of bacteria and 5 to 8 percent of them receive antibiotics while the diagnosis is pending.
This tutorial follows the same idea as my original tutorial for windows, but I've redone it to work with Mac OS X. Here's how to get a meterpreter session from your victim opening a malicious word document:
Welcome my aspiring hackers and programmers! Today i will introduce you to a programming language that as a hacker you should have in your set of hacking/programming skills (except if you're only interested in web hacking/programming...then you should go learn some html or PHP instead of C#).
I saw many people asking for a Tutorial about writing their own Remote Administration Tool, so I now introduce you in a basic kind of RAT. This program is not for real use, but for learning how you could write this kind of tool. It will be basicly coded and not very refined. I used Python 3, so you have to install it if you want to use this program unchanged. Also this RAT is for Windows and almost all features won't work under Linux.
