rot

打开文件，告诉是rot加密，写个python脚本跑一下

a = [83,89,78,84,45,86,96,45,115,121,110,116,136,132,132,132,108,128,117,118,134,110,123,111,110,127,108,112,124,122,108,118,128,108,131,114,127,134,108,116,124,124,113,108,76,76,76,76,138,23,90,81,66,71,64,69,114,65,112,64,66,63,69,61,70,114,62,66,61,62,69,67,70,63,61,110,110,112,64,68,62,70,61,112,111,112]
b = []
for i in a:
    i = i-13
    b.append(i)

for j in b:
    print(chr(j),end='')

结果跑了一个寂寞，还好给了一个MD5，抱着侥幸的心理解密一下得到flag为

flag{www_shiyanbar_com_is_very_good_@8Mu}