Anyone who has used Linux long enough is familiar with sudo. Short for superuser do (or substitute user do, depending on who you ask), it allows users to run commands as either root or another user on the system. From a hacker's point of view, sudo is often all that stands between them and root access. We'll be exploring an older vulnerability in sudo that allows a user to run commands as root.
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.
The default Camera app got a few more tricks up its sleeves when iOS 11 was released, and the best addition by far was the inclusion of a built-in QR code reader since that meant no more third-party apps just for QR code scanning. However, Apple's built-in QR code scanner did have a vulnerability at one point that would let hackers direct you to a compromised website without you even noticing it.
Since I first announced the new Null Byte recognition for excellence a few weeks ago, several of you have written me asking, "How can I study for this certification exam, and what material will be covered on the exam?" Now I have an answer for you. The White Hat Hacker Associate (CWA) will cover 14 domains or areas. Everything you need to know is here on Null Byte. There will be no questions that are not covered here on this site, guaranteed.
Welcome back, my tenderfoot hackers! Recently, Microsoft released a new patch (September 8, 2015) to close another vulnerability in their Windows Vista, 7, 8, and 8.1 operating systems. The vulnerability in question (MS15-100) enabled an attacker to gain remote access to any of these systems using a well-crafted Media Center link (MCL) file.
I'm sure that many of us have heard of that nasty Shellshock vulnerability, but not very many people know how to exploit it. Try these few tricks on vulnerable websites!
Welcome back, my budding hackers! When we are looking for ways to hack a system, we need a specific exploit to take advantage of a certain vulnerability in the operating system, service, or application. Although I have shown you multiple ways to exploit systems here in Null Byte, there are still many more exploits available that I have not yet shown you.
While websites may run smoothly without any noticeable vulnerabilities, there's always the looming threat that any background weakness in the site can be exploited by hackers. Once a site is compromised, it can be difficult to get it fixed without the proper help. Google has recently launched a new series entitled "Webmasters help for hacked sites”, which teaches web developers and site owners how to avoid getting hacked and how to recover their website if it gets compromised in any way.
With all of the bare-bones setup out of the way in our Mac for Hackers series, your Apple machine should be ready to run a significant amount of pentesting tools. We can pull tools from GitHub and compile them, we can pull dependencies or tools from Homebrew, we have both Python and Ruby. Everything is ready to go and now it's time to start building a toolbox on our local host.
Your Android phone is a computer not unlike a laptop or desktop PC and it shares the same vulnerabilities. This clip presents a quick overview of how to safeguard against viruses and data loss. With the Lookout app, it's easy! So easy, in fact, that this video guide can present a complete overview of the process in about two minutes. For more information, including step-by-step instructions on how to adjust your own Facebook tagging settings, take a look.
How to sharpen a knife using a sharpening stoneIn this video we are about to see how to sharpen a knife using a sharpening stone. First of all we need to know the faults and the damages on the edges of the knife where it is to be repaired. Then get a sharpening stone to make a sharp knife. Now rub the knife at a 45 degree angle with a fair amount of pressure. Now repeat the process by changing the positions of the knife on either hand. This is done to get the knife cutting towards the stone t...
Directory traversal, or path traversal, is an HTTP attack which allows attackers to access restricted directories by using the ../ characters to backtrack into files or directories outside the root folder. If a web app is vulnerable to this, an attacker can potentially access restricted files that contain info about all registered users on the system, their permissions, and encrypted passwords.
It's always a good idea to know how an attack works at the very basic level. Manual techniques for exploitation often find holes that even the most sophisticated tool cannot. Sometimes, though, using one of these tools can make things so much easier, especially if one has a solid foundation of how it works. One such tool can help us perform a cross-site request forgery with minimal difficulty.
No operating system is stricken with as many vulnerabilities as Windows, and it's often a race to release the latest patches to fix things. From an attacker's point of view, knowing which patches are present on a Windows machine can make or break successful exploitation. Today, we will be covering three methods of patch enumeration, using Metasploit, WMIC, and Windows Exploit Suggester.
It looks like there is a fatal flaw in the current macOS High Sierra 10.13.1, even straight from the login menu when you first start up the computer. This severe vulnerability lets hackers — or anyone with malicious intentions — do anything they want as root users as long as they have physical access to the computer.
A vulnerability in the design of LiDAR components in driverless cars is far worse than anything we've seen yet outside of the CAN bus sphere — with a potentially deadly consequence if exploited.
Welcome back, my greenhorn hackers! Throughout this series on Metasploit, and in most of my hacking tutorials here on Null Byte that use Metasploit (there are many; type "metasploit" into the search bar and you will find dozens), I have focused primarily on just two types of modules: exploits and payloads. Remember, Metasploit has six types of modules:
Welcome back, my hacker novitiates! In previous guides, we have used one of the most powerful hacking platforms on the planet, Metasploit, to perform numerous hacks. They ranged from exploiting Windows XP and Windows 7/8 vulnerabilities, to installing a keylogger and turning on a webcam remotely. We have even been able to save the world from nuclear annihilation, see if our girlfriend is cheating, spy on suspicious neighbors, evade antivirus detection, and more.
There are countless ways in which you can turn your love of tech and coding into a full-fledged career — from developing apps and websites as a freelancer to working in the IT departments of small startups or major tech companies. But one of the best ways that you can put your programming skills to good use is to join the increasingly important world of cybersecurity.
Reconnaissance is one of the most important and often the most time consuming, part of planning an attack against a target.
Apple's Gatekeeper security software for macOS (Mac OS X) is vulnerable to remote attacks up to version 10.14.5. An attacker that's anywhere in the world can exploit MacBooks and other Mac computers by sharing a single ZIP file.
Particular vulnerabilities and exploits come along and make headlines with their catchy names and impressive potential for damage. EternalBlue is one of those exploits. Originally tied to the NSA, this zero-day exploited a flaw in the SMB protocol, affecting many Windows machines and wreaking havoc everywhere. Here, we will use EternalBlue to exploit SMB via Metasploit.
Apple released an iOS 11.2.2 update on Monday to iPads, iPhones, and iPod touches. The update comes as no surprise since news broke last week of a massive security vulnerabilities, named Meltdown and Spectre, which are found in smartphone chips throughout the industry. This update in large part addresses the security risks imposed by these chip flaws.
Google caught a lot of flak for the Pixel 2 XL's POLED display issues, regardless of whether the problems were real or perceived. It's too late to contract another screen manufacturer at this point, but Google is doing the next-best thing: Fixing as many user complaints as possible with software updates.
OpenVAS is a powerful vulnerability assessment tool. Forked from Nessus after Nessus became a proprietary product, OpenVAS stepped in to fill the niche. OpenVAS really shines for information gathering in large networks where manual scanning to establish a foothold can be time-consuming. OpenVAS is also helpful for administrators who need to identify potential security issues on a network.
Research group OpenAI, a research institute co-founded by Tesla CEO Elon Musk, says it is possible to trick driverless cars' neural networks into mistaking images for something else.
Hello aspiring hackers, It's been a while since I wrote a tutorial, so I figured I might just share one of the tools that I have created to help the community grow.
Five Phases of Hacking:- The five phases of Hacking are as follow:
Before we begin learning about another vulnerability, we are going to explore printf in a bit more detail. This will be quick little tutorial.
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.
Hello fellows nullbyters, first of i will start saying that im addicted to this community, i feel the challenge growing up so fast, all the newbies, amateurs,advanced and professionals hackers around trying their best to help the community, badly but we got some script-kids too but anyway, today we are going to learn how to install and use clanAV in kali linux.. INTRODUCTION
Hackers are claiming money for a security flaw in Apple's new update. Quick Summary:
Now that we have control over a victim's browser, we need to use some attacks to maintain the connection, or even better: upload a shell.
Step 1: Introduction: Hello! Hackers
Heartbleed, move over. There's a new bug in town, and this time it's also affecting Mac and Linux computers. It's called Shellshock (its original official title is CVE-2014-6271), and it's currently got a 10 out of 10 severity rating over at the National Cyber Awareness System. While some updates have been issued to fix this bug, they were incomplete, and your system is probably still vulnerable, as it has been for the last probably 20 years.
Each day, we read about another security breach somewhere in our digital world. It has become so commonplace that we hardly react anymore. Target, J.P. Morgan, iCloud, Home Depot, and the list goes on and on.
In a era where cyber security is becoming increasingly important, Comcast has decided to use its customers' routers to provide hotspot access to the public. A new program, outlined by Dwight Silverman over on the Houston Chronicle website, seeks to provide Xfinity customers with city-wide Wi-Fi hotspots by using, well...other customers' wireless routers.
Incorporating features such as CarPlay, UI enhancements such as the new call screen, and several bug fixes, iOS 7.1 was the first major update to Apple's operating system since iOS 7 was released in June of last year.
Considering how often many of us fly on commercial airlines, the idea that a hacker could somehow interfere with the plane is a very scary thought. It doesn't help to learn that at Defcon, a researcher found that the Automatic Dependent Surveillance Broadcast (ADS-B), transmissions that planes use to communicate with airport towers are both unencrypted and unauthenticated.
Step 1: What Exploit Development Is and Why Should I Be Interested on About This Topic
