Publications

Exploiting CVE-2021-25770: A Server-Side Template Injection in YouTrack

11/02/2021 Exploiting CVE-2021-25770, a Server-Side Template Injection that leads to remote code execution using a known Freemarker sandbox escape.

Analysis and exploitation of the iOS kernel vulnerability CVE-2021-1782

10/02/2021 Two weeks ago, CVE-2021-1782 was fixed by Apple. If the patch for this kernel vulnerability is simple, a way to exploit the bug was still to be discovered. This blog post aims to explain how an exploit is possible while providing a PoC.

Unleash the dino: Time-based strategies to improve password cracking

23/12/2020 In this article we share technical details on how Kraqozorus automatically generates password cracking strategies that improve both the number of cracked hashes and time required to run the attacks.

Typo3: leak to Remote code execution.

17/12/2020 Typo3 is an open source CMS we have recently encountered during one of our missions. We successfully exploited a configuration leak on this CMS to gain remote code execution on this application. This article describes the different steps to go from unauthenticated user to unsafe object deserialization and gain code execution.

Investigating IDA Lumina feature

15/12/2020 Lumina is a built-in function recognition feature of the well-known IDA pro disassembler that relies on an online signature database. Unfortunately, the database server is not available for local private use. Have you ever raged at a misstyped hotkey that sent your database content to the Lumina servers, wondered how it works, what kind of data is sent, and wished for a local server under your control? This blog post might answer some of your questions.

This is for the Pwners: Exploiting a WebKit 0-day in PlayStation 4

10/12/2020 Despite an active console hacking community, only few public PlayStation 4 exploits have been released. In this post, we will give a walk-through on the exploitation of a 0-day WebKit vulnerability on 6.xx firmware.

Pull up your bootloader

09/12/2020 SoC usually have the capability to customize the hardware behavior at system boot based on the value of input pin states called configuration word. However, the set of pull-up and pull-down resistors that control the configuration word can be hard to locate, especially on chips using BGA casings. In this study you will see that you don't always have to use expensive equipment to uncover these pins, sometimes all you need is a scope, a decent camera and knowing what you're looking for.

iOS 1-day hunting: uncovering and exploiting CVE-2020-27950 kernel memory leak

01/12/2020 Back in the beginning of November, Project Zero announced that Apple has patched a full chain of vulnerabilities that were actively exploited in the wild. This chain consists in 3 vulnerabilities: a userland RCE in FontParser as well as a memory leak and a type confusion in the kernel. In this blogpost, we will describe how we identified and exploited the kernel memory leak.

Don't fear the bark, ts_rewrite to dodge the mark

26/11/2020 You probably already have encountered a fanatical WAF during an engagement that turned you crazy preventing your almighty SQL injection from being exploited properly. This will never happen again thanks to a novel advanced technique based on artificial intelligence and block chain analysis. Read this article to know how. Disclaimer: this is click-bait.

Treasure Chest Party Quest: From DOOM to exploit

25/11/2020 In this blogpost, we will find what happens when two security researchers find a random printer and then manage to find vulnerabilities in it.