直接异或给的串中所有字符
文件名改为你网上下载的那个文件

with open('task', 'rb') as f:
    b = f.readlines()
print(b)
c = b''
for i in b:
    c += i
print(c)
data = list(c)
print(data)
for k in range(200):

    flag = ""

    for i in range(len(data)):
        flag += chr(data[i] ^ ord('f'))  # 与f的ASCII码进行异或
        print(flag)