Check the home directory of flag03 and take note of the files there.
There is a crontab that is called every couple of minutes.
To do this level, log in as the level03 account with the password level03. Files for this level can be found in /home/flag03.
喔喔出現不一樣的題形了，一樣先登入 level03
There is a vulnerability in the below program that allows arbitrary programs to be executed, can you find it?
To do this level, log in as the level01 account with the password level01. Files for this level can be found in /home/flag01.
一樣先登入 level01, 密碼也是 level01
This level requires you to find a Set User ID program that will run as the 「flag00」 account. You could also find this by carefully looking in top level directories in / for suspicious looking directories.
Alternatively, look at the find man page.
To access this level, log in as level00 with the password of level00.
首先，以 level00 登入，密碼也是 level00
根據提示，要找到一個可以在flag00使用者上執行的 set user ID 程式，可以從根目錄中的可疑資料夾中找到…不過我不是很確定哪些資料夾是可疑的就先略過，看來只能用find來慢慢找了 0A0