IT Systems, Networks, Security and Education
[ Hacker Night School ] is where hackers from gurus to noobs can learn about new tools, or polish their skillz on the major applications everyone needs to know.
Https://tls.ulfheim.net/ has a beautiful graphical way to see every step of setting up a TLS connection. This is porn for network geeks, but also for hackers (sometimes the same people). To paraphrase Ultra Famous Hacking God Pablos Holman, Here’s the messages between website and client to set up TLS. Every one of these is an …
Continue reading “[ Hacker Night School ] :: The Illustrated TLS Connection”
The KBID XXX – TLS Downgrade I almost every course I teach I discuss the perils of “TLS fallback,” a fatal misconfiguration that negotiates a web server back to an old, insecure SSL/TLS version. From there it’s simple to use known exploits against the web server and boom, now it’s a Russian crimeware server. This …
Continue reading “[ Hacker Night School ] :: the POODLE attack, featuring TLS Downgrade”
A fellow teacher tells me about the “Holy Unblocker,” a proxy service that lets school kids get around their school’s web restrictions. It looks to me like it could be useful for other people, perhaps people living under regimes that want to control their access to knowledge and communications. This proxy is insidious: it uses …
Continue reading “[ Hacker Night School ] :: The Holy Unblocker”
Here’s an awesome Bluetooth exploit from 2018 that EVERY device was vulnerable to, called the KNOB attack. “We found and exploited a severe vulnerability in the Bluetooth specification that allows an attacker to break the security mechanisms of Bluetooth for any standard-compliant device. As a result, an attacker is able to the listen, or change …
Continue reading “The KNOB Attack: Does this exploit from 2018 still work?”
Here’s another Google Appspot pen-testing practice site, this one focused on XSS (Cross-Site Scripting). Oh, it’s so fun to have sites where you can rampage like Hannibal’s elephants without getting condemned to death by gladiator! “In this training program, you will learn to find and exploit XSS bugs. You’ll use this knowledge to confuse and …
Continue reading “XSS Game :: Learn Cross-Site Scripting, Bug-Test Google Apps, Step 3: Profit”
I’ll let them say it: “This codelab is built around Gruyere /ɡruːˈjɛər/ – a small, cheesy web application that allows its users to publish snippets of text and store assorted files. ‘Unfortunately,’ Gruyere has multiple security bugs ranging from cross-site scripting and cross-site request forgery, to information disclosure, denial of service, and remote code execution. …
Continue reading “Gruyere :: A Cheesy Web App For Your Hacking Delectation”
OWASP Juice Shop: Hmm, let’s see what we can hack here. This isn’t for beginners, but this realistic e-commerce site lets you root around and find things to break without the local gendarmerie knocking at your door. It’s pretty, it’s well-designed and well-coded, and it keys to the OWASP Top 10 Web Vulnerabilities (which you’d …
Continue reading “OWASP Juice Shop :: Get Your Web Hacking Jollies Here [ Hacker Night School ]”
When you say “Vulnerability Scanners” most people in our field immediately think of Nessus. But Nessus is just a commercial take-over of a previously open-source project, and the core developers don’t exactly love their work being commercialized at no benefit to them. (Don’t get me started here.) So they “forked” the project, creating the Open …
Continue reading “[ Hacker Night School ] :: Using the Greenbone Vulnerability Scanner”
OWASP supports two hackable-website packages, WebGoat and Mutillidae. “WebGoat is a deliberately insecure web application maintained by OWASP designed to teach web application security lessons. This program is a demonstration of common server-side application flaws. The exercises are intended to be used by people to learn about application security and penetration testing techniques.” – https://github.com/WebGoat/WebGoat …
Continue reading “[ Hacker Night School ] :: WebGoat, An OWASP Hacking Practice Website”
I’ve spoken in many classes about the process of dumping memory with DumpIt, then analysis with Volatility (preinstalled on the SIFT Workstation, a VM distro you should definitely explore). Meet LeetDev.net and their CTF Archives. Here’s a link to the CTF list page; click the Volatility graphic to go to the article, fortunately in English. …
Continue reading “[ Hacker Night School ] :: A Memory Forensics with Volatility Writeup”