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ASIS CTF - xtr BambooFox CTF: The Vault BSidesSF 2021: Log 'em All De Danske Cybermesterskaber: 80s Commitments De Danske Cybermesterskaber: Kuuuurveen FaustCTF 2021 - Attack & Defense - thelostbottle Hack.lu CTF - Nodenb LKVM Escape MidnightSun Quals: kgbfskfsb MidnightSun Quals: Revver Pwn2win - Hackus Qiling Sandbox Escape Real World CTF 4th: Secured Java Sudo Exploit Writeup Union CTF 2021: Cr0wnAir
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  • ASIS CTF - xtr

    Oct 15, 2022 web XSS RCE

    Writeup by: andyandpandy, Anakin Solved by: Fr3d, c3lphie, Anakin, andyandpandy, patriksletmo, ly4k and more Writeup This challenge took us 21 hours to solve. Only 3 out of 524 teams solved it. Overview The challenge included a scenario where we had arbitrary javascript execution on a website. From here we were able to …

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  • MidnightSun Quals: Revver

    Apr 4, 2022 rev z3

    Revver, Midnight Sun CTF writeup Solved by: zzz, Zopazz Writeup by: Zopazz Description: Automated reversing is a solved problem, right. Writeup General challenge information In this challenge we were provided with a netcat session, which would respond with one of 20 random dynamically generated shellcodes encoded as …

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  • MidnightSun Quals: kgbfskfsb

    Apr 3, 2022 web race-conditions

    kgbfskfsb, MidnightSun CTF writeup Writeup by: Nigma, nrabulinski Solved by: sebastianpc, Eldar Zeynalli (Hako), nrabulinski, Nigma Description: DeNiS Sergeev wants a secret mission payload… Attachments: kgbfskfsb.tar.gz The challenge description pretty clearly hints towards DNS stuff and sure enough, after …

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  • Qiling Sandbox Escape

    Jan 24, 2022 clone-and-pwn qiling sandbox-escape

    Writeup by: Oliver Lyak (ly4k) Solved by: Zopazz, Oliver Lyak (ly4k) QLaaS QLaaS (Qiling as a Service) was a Clone-and-Pwn challenge with difficulty Schrödinger (whatever that means). The challenge was solved by 23 out of 947 teams. We are provided with the following attachment: …

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  • Real World CTF 4th: Secured Java

    Jan 23, 2022

    Writeup by: Nicolai Søborg Solved by: Nicolai Søborg, Rasmus Have This year we managed to land a 13 place, again! (which is really a shame as top 12 gets swag …) Secured Java The challenge is a single python file that allows you to “run untrusted Java in a safe way”. The code boils down to: you …

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  • LKVM Escape

    Dec 17, 2021 web race-conditions

    Writeup by: Zanderdk | linkedin Solved by: ZZZ | linkedin, N00byedge | linkedin Indie VMM - HXP 2021 In this challenge we are given a root access to a linux machine running in the linux tools hypervisor and the goal is to escape out of the hypervisor to access the flag file on the host system. During this challenge we …

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  • Hack.lu CTF - Nodenb

    Oct 30, 2021 web race-conditions

    Writeup by: andyandpandy Solved by: andyandpandy, Hako Writeup The challenge has a race condition vulnerability, where you can delete your user and rapidly after send another request for the flag, which is successful when timed correctly. Description Web challenge Challenge author: pspaul/SonarSource To keep track of …

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  • Pwn2win - Hackus

    Jun 18, 2021

    Writeup by: andyandpandy Solved by: andyandpandy, eskildsen, 2by4 Writeup This is most likely an unintended solution. TL;DR: Create a note with two iframes. First iframe gets /s/secret-note, second gets from evil.com, which returns a html page where another iframe is loaded based on an 0-day …

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  • FaustCTF 2021 - Attack & Defense - thelostbottle

    Jun 13, 2021 attack-defense game python misc

    Writeup author: Bawstaws The Lost Bottle is the most awesome pirate game. It is about a young pirate, that lost her favorite bottle of old rum. She is now doomed to drink ordinary rum until she finds her bottle. Flags: 2531.00 Tags: rev, misc, game Introduction After discovering that this is a game challenge I quickly …

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  • De Danske Cybermesterskaber: Kuuuurveen

    May 9, 2021 Crypto

    Writeup by: ChrRaz Kuuuurveen We are given the following challenge description. A client and a server have been communicating the flag over an encrypted channel. Der er en Kuuuuuuuuuuuuuuurveeeeeee, er den ikke smuk? En client og en server kommunikere over en krypteret kommunikationskanal. Se om du ved hjælp af source …

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Recent Posts

  • Welcome to Kalmarunionen
  • ASIS CTF - xtr
  • MidnightSun Quals: Revver
  • MidnightSun Quals: kgbfskfsb
  • Qiling Sandbox Escape
  • Real World CTF 4th: Secured Java
  • LKVM Escape
  • Hack.lu CTF - Nodenb

Categories

WRITEUPS 10 DDC-2021 2 MIDNIGHTSUN 2 BSIDESSF-2021-CTF 1 FAUST-CTF-2021 1 HACK.LU-CTF 1 HXP 1 REAL-CVE 1 REAL-WORLD-CTF 1

Tags

WEB 4 RACE-CONDITIONS 3 CRYPTO 2 ATTACK-DEFENSE 1 C++ 1 CLONE-AND-PWN 1 GAME 1 MISC 1 PYTHON 1 QILING 1 RCE 1 REAL-WORLD 1 REV 1 SANDBOX-ESCAPE 1 SUDO 1 SUNDHEDSKORT 1 USE-AFTER-FREE 1 XSS 1 Z3 1

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