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[MRCTF2020]Unravel!!.md

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[MRCTF2020]Unravel!!

知识点

AES解密

SilentEye

解题

三个文件

c@pc /m/c/U/c/D/a/Unravel> ll
total 11M
-rwxrwxrwx 1 c c 399K Mar 12  2020 JM.png*
-rwxrwxrwx 1 c c 5.8M Mar 15  2020 Look_at_the_file_ending.wav*
-rwxrwxrwx 1 c c 4.8M Mar 12  2020 win-win.zip*

先看看第一个文件

image-20231130105832762

似乎是base64,解码看看

image-20231130111631531

发现salted,应该是AES3DES

找密钥,binwalk看看照片

image-20231130111834449

发现AES密钥

image-20231130112245185

使用SilentEyeDecodeEnding.wav

image-20231130112427165