Reverse Engineering sometimes results in Remote Code Execution
Question: How can signature-based Intrusion Detection systems be defeated? Answer: Using polymorphic shellcodes! This might sound really crazy and cyber, but it has nothing to do with inventing fancy new hacking techniques, it’s rather about puzzling. By replacing assembly instructions with other assembly instructions
Better late than never. This article will give you some insights about my discovered generic Cross-Site Request Forgery Protection Bypass in Ubiquiti’s UniFi v3.2.10 and below, as published some time earlier this year on HackerOne. This vulnerability basically allows an attacker to compromise
Hamburg – just about one year ago, the first BSides was organized by Arron and Caroline. Now, one year later on 28th December, just after a relaxed Christmas time, they invited again – for the next #BSidesHH. It was powered by the great
TYPO3 is the most widely used enterprise content management system with more than 500.000 installations. I have recently discovered a Non-Persistent Cross-Site Scripting vulnerability in its core and disclosed the details of the vulnerability publicly as CVE-2015-5956. This blog article should give you
I have published another security advisory about a vulnerability, which I have “recently” reported to Yahoo! via their Bug-Bounty program hosted by HackerOne. So this blog post is about the technical details of the CVE-2014-7216 (which is not very thrilling), but
One very common tool among penetration testers is Metasploit, which includes a lot of nice exploits and payloads. The 5th assignment of the SecurityTube Linux Assembly Expert certification is about Metasploit shellcode analyses for Linux/x86 target systems. The task is to
The Wassenaar Arrangement. Maybe you have already heard about that. With the implementation of this multilateral export control regime on conventional arms, dual-use goods and technologies, security researchers like me could be called lords of war and weapons dealers now – sounds cool, but unfortunately it’s
Anti-Virus and Intrusion Detection Systems could become really nasty during a penetration test. They are often responsible for unstable or ineffective exploit payloads, system lock-downs or even angry penetration testers 😉 . The following article is about a simple AV and IDS
While the year 2014 comes to an end, two very interesting conferences have taken place in Hamburg. The annual Chaos Communication Congress 31C3 occupied the Congress Center of Hamburg (CCH) for 4 days and the first BSidesHH was held in the heart of the city. Luckily, I
It’s been a while since I’ve published my last article, this is mainly because I’m currently working on a nice project overseas in Asia and enjoying this relaxed life here a little bit. Therefore I also keep this blog post