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For Ubuntu 16:

64 bit: libc-2.23.so

32 bit: libc-2.23.so

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For Ubuntu 18:

64 bit: libc-2.27.so

32 bit: libc-2.27.so

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For Ubuntu 19:

64 bit: libc-2.29.so

32 bit: libc-2.29.so

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For Ubuntu 20:

64 bit: libc-2.30.so

32 bit: libc-2.30.so

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FOR ARM:

libc-2.24.so

ld-2.24.so

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Windows 版本：

Windows Server 2019（1809） 17763.2366

DLL 文件下载 / DLL Library Download: DLL.zip

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Real 类环境仅供学习，flag 不是最终目的。当然你硬要拿 flag 的话就到环境变量里看看吧。

Real Category Challenge only for study, You may find the flag at the environmental variable.

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