Web security // Security Researcher @osec_io // CTF with @0tolerance_ctf @greunion_ctf
Greece
Joined June 2015
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deltaclock retweeted
Results are in! Nikolaos Mourousias (@deltaclock) and Bruno Halltari (@BrunoModificato) of OtterSec successfully exploited the Oracle Autonomous AI Database with 4 bug chain of 3 collisions and 1 zero-day winning them $6,250 and 2.5 Master of Pwn points
deltaclock retweeted
Boom! Day 3 of #Pwn2Own Ireland kicks off with a successful demonstration from Nikolaos Mourousias (@deltaclock) and Bruno Halltari (@BrunoModificato) of OtterSec targeting Oracle Autonomous AI Database. They head off to the disclosure room to dish the deets.
deltaclock retweeted
A logical bug that I've reported to MariaDB has just been disclosed! 🎉
It's a nice logic issue that allows any user (no matter their rights) to update the password of any other user, including root :D
You can find more details 👇
hackerone.com/reports/387643…
deltaclock retweeted
Dialed in! Nikolaos Mourousias (@deltaclock), Caue Obici (@caueobici) & Bruno Halltari (@BrunoModificato) of OtterSec used a Code Injection bug to exploit LM Studio in the second round, earning $20,000 and 4 Master of Pwn points. Full win! #Pwn2Own #P2OBerlin
deltaclock retweeted
Let's goooo! Nikolaos Mourousias, Caue Obici & Bruno Halltari (@deltaclock, @caueobici & @BrunoModificato) of OtterSec was able to exploit LM Studio! If confirmed, they win $40,000 and 4 Master of Pwn points. They're off to the disclosure room to explain how they did it. #Pwn2Own #P2OBerlin
deltaclock retweeted
We teamed up with @WreckTheLine & @redrocket_ctf and secured 🥇1st place at @LakeCtf! Huge thanks to @polygl0ts for putting together an awesome CTF - it was an incredible experience!🇨🇭🔥
deltaclock retweeted
Unrestrict the restricted mode for USB on iPhone. A first analysis @citizenlab #CVE-2025-24200 👉 blog.quarkslab.com/first-ana…
deltaclock retweeted
Just unrestricted an issue that shows a fun new attack surface. Android RCS locally transcribes incoming media, making vulnerabilities audio codecs now fully-remote. This bug in an obscure Samsung S24 codec is 0-click
project-zero.issues.chromium…
deltaclock retweeted
🏆It's a three-peat! Team Europe wins again the International Cybersecurity Challenge 2024 in Santiago, Chile 🇨🇱!
Congratulations to all the players and coaches for their outstanding performance!👏
Find out more and get ready for ICC 2025: europa.eu/!x6tPFW
deltaclock retweeted
And with the typical delay that distinguishes our team, here is the final scoreboard 🚩
Props to @kalmarunionenDM, IcySea and @0rganizers for reaching the podium, we wait you and the other top 10 teams at the finals!
Full scoreboard at ctf.m0lecon.it
deltaclock retweeted
What a weekend it was! We are super proud of the results. It was great playing alongside top-notch players in the CTF community! 🥳
Shout-out to @GoogleVRP for yet another amazing competition and of course, to our awesome friends from @0tolerance_ctf & @redrocket_ctf . Cya in Malaga!
deltaclock retweeted
Shout-out to @GoogleVRP for yet another amazing competition and of course, to our awesome friends from @0tolerance_ctf & @redrocket_ctf . Cya in Malaga!
deltaclock retweeted
This years Google CTF Qualification is over. Congratulations to @kalmarunionenDM, kijitora and Zer0RocketWrecks! The top 8 teams qualified for Hackceler8 2024 in Málaga. More details at goo.gle/ctf.
¡Vamos!
deltaclock retweeted
Just released the write-up for CVE-2024-4367, a bug I found recently in PDF.js (and hence in Firefox), resulting in arbitrary JavaScript execution when opening a malicious PDF.
codeanlabs.com/blog/research…
deltaclock retweeted
Here we go! The LakeCTF participants just arrived from Italy, the US, Vietnam, Germany, Japan, Sweden, Greece, Malaysia, Romania, Chez Republic, and the Netherlands...just to name a few 🙌
Welcome to @EPFL and #Switzerland, glad to have you with us!#LakeCTF #CTF #cybersecurity
deltaclock retweeted
Let's Cheer for Team Europe at the 2nd International Cybersecurity Challenge in the United States!
#ENISA is proud to welcome our new talented Team Europe as they compete in #ic3games2023, demonstrating their cybersecurity skills & expertise!
Learn more: europa.eu/!8BR3kD
deltaclock retweeted
Last weekend we traveled to Timișoara🇷🇴 and won HackTM Finals! We competed in the following:
🚩Jeopardy [ we aced it 🏆]
👑KoTH with chatGPT [ nice bypasses @seetf_sg ]
🪙Attack/Defense in blockchain [ WOW 🥈]
📱HW / Andoird [ 0 solves]
Thanks for organising @WreckTheLine!
deltaclock retweeted
This weekend, we competed in @pwnmectf quals and we secured 2nd place 🔥!
Infrastructure could be better but the challenges were interesting.
Looking forward to see all these familiar faces in Paris. À bientôt à Paris🥖! @WreckTheLine @redrocket_ctf
🙌 Big thanks to all you CTF warriors who joined our epic competition!
🚀 We'll hit up those who qualified for the campus finals to confirm student status and work out the deets.
🏆 Massive thanks again for joining us and bringing the heat 🔥🔥🔥.
ctf.pwnme.fr/hackerboard
