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A collection of 3 posts
writeup

2024 DEVCORE Wargame

今年 Wargame 有八題,難度比往年高超多,都是有趣又實用的魔法,我在比賽結束前解了三題,結束後晚上解了兩題牆,剩下 Spring、酷拉皮卡 Kurapika、Notes Space Supercalifragilisticexpialidocious 簽到題 PHP Syntax Checker


'; highlight_file(__FILE__); exit(); } $code = strval($_GET['code']); try { create_function('', $code); echo "valid"; } catch (ParseError $e) { echo "syntax err
Aug 25, 2024 11 min read
writeup

2023 ACSC CTF Qual Writeup

這次賽程只有 24 hr ,題目的難度都挺高,每個都參雜一些密碼學,也許是因為亞洲賽區大家數學都很好吧,我好不容易解完數學的那些題目都已經超過二十隊解,最後才 56 th 不能出國玩QQQQ 亞洲人之恥... 題目都相當好玩,唯一缺點是時間太少來不及看 Web Admin Dashboard 題目需要得到 admin 權限來瀏覽 index 獲得 flag。有個登入後可以 report 的功能,還有一個受 CSRF Token 保護的 addadmin 頁面可以將帳號提升為 admin
Feb 26, 2023 6 min read
writeup

2022 SECCON CTF Quals WriteUps

This CTF is my First one after I join Balsn, and this writeup is my first one in full english. Balsn get the 16th place at the end. I solved some web challenges with my idol ginoah. The challenges are awesome! web skipinx This challenge is solved by teamate Peter
Nov 15, 2022 6 min read
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