• GoogleCTF 2023 Writeup

    Last weekend, I played GoogleCTF with b01lers. We ranked 55th in the end. I solved 2 misc, 1 rev, 1 crypto, and 3 pwn. This writeup will mostly focus on my own thought process while solving the challenges, and I’d recommand reading the official writeups as well.

    Challenge solved after the competition are marked as [*]


  • Greycat CTF Quals 2023 Writeup

    Last weekend, I participated in Grey Cat CTF Qual 2023 with b01lers. We ranked 22nd overall. I think the challenges are interesting and decided to post writeups on the challenges I solved. I solved 6 crypto and 1 pwn (with help from teammate) during the competition.

    Challenge solved after the competition are marked as [*]


  • b01lersCTF 2023 - Padlock

    For the past year, b01lers has been a huge success in my opion, with our 2023 edition of b01lers CTF, more interesting challeges are solved by the curious individuals. We received a lot of feedback, and most of them are positive! I’m glad for hosting such a wholesome event for everyone :)


  • ACSC 2023 Writeup

    This year I participated in Asian Cyber Security Challenge and placed 38th place out of all participants. This documents the writeups for all of the challenges I solved. The writeup will be in chronological order ;) Challenge solved after the competition are marked as [*]


  • HackTM 2023 - d-phi-enc

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    In CTF, there are many people who mistakenly encrypt p, q in RSA.
    But this time...
    
    Solves: 51 solves
    

  • GoogleCTF 2022 - segfault labyrinth

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    Be careful! One wrong turn and the whole thing comes crashing down
    
    nc segfault-labyrinth.2022.ctfcompetition.com 1337
    
    Solves: (189 pt/ 56 solves)
    

  • TetCTF 2022 - Ezflag

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    We found an internal storage system exposed to the internet. By ambushing one of the employee, we got some files and the credentials of the system: "admin:admin". Unfortunately, our agent was poisoned and cannot continue hacking. Can you help us?
    
    Service: http://18.220.157.154:9090/
    or
    Service: http://3.22.71.49:9080/
    
    Author: @nyancat0131
    Solves: 47(part1) / 20(part2) / 591
    

  • HITCONCTF - cclemon

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    Speak in 🍋
    
    Author: david942j
    Solved: 24/286
    

19 post articles, 3 pages.