## Step.1 執行 `flag` 檔案 ``` $ ./flag ``` 會得到這個錯誤訊息 ``` Welcome to LoTuX CTF, try to find the flag >.0 [Errno 2] No such file or directory: 'LoTuX_CTF/flag.txt' ``` ## Step.2 創建 `LoTuX_CTF` 資料夾、`flag.txt` ``` $ mkdir LoTuX_CTF $ touch LoTuX_CTF/flag.txt ``` ## Step.3 再次執行 `flag` 會得到這個錯誤訊息 ``` Nothing here... Where can I buy the flag? [Errno 2] No such file or directory: 'Shop/flag.txt' ``` 創建對應資料夾跟檔案 ``` $ mkdir Shop $ touch Shop/flag.txt ``` ## Step.4 再次執行 `flag` 會得到這個錯誤訊息 ``` Nothing here... Ummm... What is that? [Errno 2] No such file or directory: 'Shop/SecretRoom/flag.txt' ``` 創建對應資料夾跟檔案 ``` $ mkdir Shop/SecretRoom $ touch Shop/SecretRoom/flag.txt ``` ## Step.5 再次執行 `flag` 得知需要 key ``` There is a security box. What is the key? There is no key or the key is not correct ``` 到 SecretRoom 尋找 key ``` $ cd Shop/SecretRoom $ ls ``` 會發現有很多 locker ``` flag.txt locker10 locker3 locker5 locker7 locker9 locker1 locker2 locker4 locker6 locker8 SecurityBox ``` 可以用 ls 遞迴列出所有 locker 的內容 ``` $ls -R ``` 發現 locker8 有 key.txt ``` ./locker8: key.txt ``` 把 key.txt 放入 SecurityBox ``` mv locker8/key.txt SecurityBox/ ``` ## Step.6 再次執行 `flag` 會得到這個錯誤訊息 ``` Nothing in the box... Maybe I should go back home. [Errno 2] No such file or directory: 'Home/flag.txt' ``` 創建對應資料夾跟檔案 ``` $ mkdir Home $ touch Home/flag.txt ``` ## Step.7 再次執行 `flag` 會得到這個錯誤訊息 ``` I'm so tired. Let's call it a day. [Errno 2] No such file or directory: 'Home/Drawer/MagicSpell.txt' ``` 創建對應資料夾跟檔案 ``` $ mkdir Home/Drawer $ touch Home/Drawer/flag.txt ``` ## Step.8 再次執行 `flag` ，輸入 "blablabla"，得知要取得 spell ``` I'm so tired. Let's call it a day. blablabla This is not the spell! ``` ``` cat Home/Drawer/MagicSpell.txt ``` 得到 spell ``` Curious teach me ``` ## Step.9 執行 `flag` 輸入 spell ``` *Something happened in SecretRoom* ``` 檢查 SecretRoom 會發現 locker3 有 flag ``` ./locker3: flag.txt ``` 取得 flag ``` $cat locker3/flag.txt ``` {%hackmd M1bgOPoiQbmM0JRHWaYA1g %}