XYCTF 2025 WP

MISC

签个到吧

题目给了一堆代码

>+++++++++++++++++[<++++++>-+-+-+-]<[-]>++++++++++++[<+++++++++>-+-+-+-]<[-]>+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++[<+>-+-+-+-]<[-]>+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++[<+>-+-+-+-]<[-]>+++++++++++++++++++++++++++++++++++++++++[<+++>-+-+-+-]<[-]>+++++++++++++++++++++++++++++[<+++>-+-+-+-]<[-]>+++++++++++++++++[<+++>-+-+-+-]<[-]>++++++++++++[<+++++++++>-+-+-+-]<[-]>+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++[<+>-+-+-+-]<[-]>++++++++[<++++++>-+-+-+-]<[-]>+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++[<+>-+-+-+-]<[-]>+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++[<+>-+-+-+-]<[-]>+++++++++++++++++++[<+++++>-+-+-+-]<[-]>+++++++++++++++++++++++++++++[<++++>-+-+-+-]<[-]>++++++++[<++++++>-+-+-+-]<[-]>+++++++++++++++++++[<+++++>-+-+-+-]<[-]>+++++++++++[<++++++++>-+-+-+-]<[-]>+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++[<+>-+-+-+-]<[-]>+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++[<+>-+-+-+-]<[-]>++++++++++++[<+++++++>-+-+-+-]<[-]>++++++++++[<+++++++>-+-+-+-]<[-]>+++++++++++++++++++[<+++++>-+-+-+-]<[-]>++++++++++[<+++++>-+-+-+-]<[-]>++++++++[<++++++>-+-+-+-]<[-]>++++++++++[<+++++>-+-+-+-]<[-]>+++++++++++++++++++++++++++++++++++++++++++++++++++++[<+>-+-+-+-]<[-]>+++++++++++++++++++[<+++++>-+-+-+-]<[-]>+++++++++++++++++++++++[<+++>-+-+-+-]<[-]>+++++++++++[<++++++++++>-+-+-+-]<[-]>+++++++++++++++++++++++++++++++++++++++++++++++++++++[<++>-+-+-+-]<[-]>++++++++[<++++++>-+-+-+-]<[-]>+++++++++++[<+++++>-+-+-+-]<[-]>+++++++++++++++++++[<+++++>-+-+-+-]<[-]>+++++++[<+++++++>-+-+-+-]<[-]>+++++++++++++++++++++++++++++[<++++>-+-+-+-]<[-]>+++++++++++[<+++>-+-+-+-]<[-]>+++++++++++++++++++++++++[<+++++>-+-+-+-]<[-]

很明显的brainfuck，但是运行后发现不行，看了下代码发现没有.

这里让ai修复一下

>+++++++++++++++++[<++++++>-]
>++++++++++++[<+++++++++>-]
>+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++[<+>-]
>+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++[<+>-]
>+++++++++++++++++++++++++++++++++++++++++[<+++>-]
>+++++++++++++++++++++++++++++[<+++>-]
>+++++++++++++++++[<+++>-]
>++++++++++++[<+++++++++>-]
>+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++[<+>-]
>++++++++[<++++++>-]
>+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++[<+>-]
>+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++[<+>-]
>+++++++++++++++++++[<+++++>-]
>+++++++++++++++++++++++++++++[<++++>-]
>++++++++[<++++++>-]
>+++++++++++++++++++[<+++++>-]
>+++++++++++[<++++++++>-]
>+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++[<+>-]
>+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++[<+>-]
>++++++++++++[<+++++++>-]
>++++++++++[<+++++++>-]
>+++++++++++++++++++[<+++++>-]
>++++++++++[<+++++>-]
>++++++++[<++++++>-]
>++++++++++[<+++++>-]
>+++++++++++++++++++++++++++++++++++++++++++++++++++++[<+>-]
>+++++++++++++++++++[<+++++>-]
>+++++++++++++++++++++++[<+++>-]
>+++++++++++[<++++++++++>-]
>+++++++++++++++++++++++++++++++++++++++++++++++++++++[<++>-]
>++++++++[<++++++>-]
>+++++++++++[<+++++>-]
>+++++++++++++++++++[<+++++>-]
>+++++++[<+++++++>-]
>+++++++++++++++++++++++++++++[<++++>-]
>+++++++++++[<+++>-]
>+++++++++++++++++++++++++[<+++++>-]
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<[.>]

官方解法:

https://ashupk.github.io/Brainfuck/brainfuck-visualizer-master/index.html#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

读寄存器1的极大值

得到flag{W3lC0me_t0_XYCTF_2025_Enj07_1t!}