SIGFLAG
@SIGFLAG_CTF
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CTF Team of @jkulinz
Linz, Österreich
Joined March 2017
We played @MidnightSunCTF this weekend and took 1st place as a merged team with @LosFuzzys and @SIGFLAG_CTF! Excited to meet all the other finalists in Stockholm for the MIDNIGHT SUN Finals Huge thanks to @HackingForSoju for organizing the CTF and keeping it fun right to the end
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Peak from #glacierctf was a challenge with three ingredients: (1) An XSS vulnerability, but with (2) a strict CSP that made it impossible to include external JS scripts, and (3) a bullet-proof implementation of an image upload contact form. We hacked it anyway. Read on. (1/5)
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9th place at SaarCTF together as KuK Hofhackerei with @SIGFLAG_CTF
@We_0wn_Y0u @TeamAustriaECSC and more! Thanks @saarsec for organizing, @JoePichlmayr and CSA for sponsoring accomodations for our guests, and IAIK @tugraz for providing the space!
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Learn a few things about ext4 and Java decompilation in a new blog post by our teammate Robert on the recently released @sadservers_com SRE/DevOps challenges Kihei and Belo Horizonte
sigflag.at
A walkthrough through a new set of SRE/DevOps challenges
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Big shout-out to @daho_at for being the first one in our team to get into the CVE index! ;)
CTFs can result in real-world improvements like this year's pbctf. The result: CVE-2023-25825 ( https://t.co/tkYyZti1fv) found by @SIGFLAG_CTF on @zoneminder
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New audio data decoding write-up by our team mate Daniel on decompressme-2 from pbctf 2023 @pb_ctf
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Reverse Engineering of an unknown audio codec.
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New blog post by our teammate Robert on the recently released @sadservers_com SRE/DevOps challenges Pokhara and Roseau
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A walkthrough through a new set of SRE/DevOps challenges
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Let's kick-off 2023 with a comprehensive write-up by Robert Führicht on the @sadservers_com SRE/DevOps challenges
sigflag.at
A walkthrough through a set of SRE/DevOps challenges
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And Backdoor CTF 2022 comes to an end! Congrats to the winning teams 🎉 #Drovosec, @BlackB6a, @SIGFLAG_CTF Thanks everyone for participating and see you next year ❤️
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Want to play some CTFs in the upcoming weeks? Join SIGFLAG on-site in Linz when we participate in #HITCONCTF2022 (26.11, today), do a TryHackMe beginner session (07.12) or attend the bi0sctf (17.12) - details at
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THANKS to 100+ hackers that visited our BECOME A HACKER workshop today! This was AMAZING! Shoutout to Jürgen Weiss from ARES CI & @Dynatrace & @epunkt_com for sponsoring us. See you at the next competition!
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Wow, your interest in our workshop is amazing!! Due to an update of our compression algorithm we now have even more free seats for you!
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SIGFLAG is looking for new members. And we want to let you get a taste of hacker air.
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Missing the taste of hacker air? We start the new semester with the 2nd edition of our beginner-friendly IT security workshop. Register for free! https://t.co/i68o5sTDpd
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We are looking forward to our very first hackathon! It will take place on September 17th in the GRAND GARAGE at the Tabakfabrik Linz. Please register at https://t.co/DElcvFvTHz
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Even an up-to-date #log4j 2.17.2 didn't stop us from extracting secrets from the environment. Read how we used a ReDoS side channel attack in #GoogleCTF
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Even with the latest Log4j version, some injection attacks are still possible
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Had a lot of fun escaping the maze on the final day of @OverTheWireCTF - check out my write-up if you are curious
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Programmatically escaping from a maze with Trémaux and dead-end filling
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Merry Christmas everyone! As a special we play the Musical Stegano challenge from @OverTheWireCTF on real synthesizers. Enjoy! :)
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#ructfe2019 was a great pleasure! Thanks to @RuCTFE ! And here is the write-up for the single flag in engine that we stole from NARF! ;)
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How to get first blood without understanding the service. Take 2.
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Our team member @_mroland wrote about exploiting Buggy .Net from #hitconctf ;)
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This style of exception handling should certainly make you suspicious!
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Informatik-Studierende der JKU @SIGFLAG_CTF und der FH Hagenberg qualifizierten sich für das Finale des internationalem „Hacker“-Wettbewerbs @VolgaCTF. 📷 oben: Markus Vogl, Tobias Höller; unten: Mario Kahlhofer, Thomas Pointhuber
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