30,353 users solved
Author: Mark E. Haase

Description

This vault uses some complicated arrays! I hope you can make sense of it, special agent. The source code for this vault is here: VaultDoor1.java

Hints

Look up the charAt() method online.

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解题过程

很简单的逻辑
VaultDoor1是一个验证用户输入的flag是否正确的方法,会将picoCTF{后以及}以前的部分传入checkPassword

flag明文在checkPassword中，直接人脑读取即可

picoCTF{d35cr4mbl3_tH3_cH4r4cT3r5_ff63b0}