判断 64F5查看mian伪代码
v8=:"AL_RT^L*.?+6/46
对v7按R
v7 = ‘ebmarah’;
v6=7

key1=":\"AL_RT^L*.?+6/46"
key2="ebmarah"[::-1]
key3=""
for i in range(len(key1)):
    key3+=chr(ord(key2[i%7])^ord(key1[i]))
print(key3)

flag

RC3-2016-XORISGUD