開啟題目檔案，一大堆01碼，用py轉換成hex

f=open("in.txt","r")
print hex(int(str(f.read()),2))
f.close()

 轉換出來就是下面這一溜

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
 

發現最前面除了0x是526172211，是rar檔案的檔案頭，於是在Winhex中貼上進去(最後面的L要去掉，表示型別的)

 儲存為rar檔案，打開發現裡面有個圖片，解壓出來檢視屬性，

這裡的base64碼解碼就是flag了。