s = list(b'x1|\xDDX')
s[0] ^= 0x34
s[2] ^= 0x32
s[3] ^= 0x88
s = bytes(s)
print(s)


fdf4171153285e0672509842d625d55b0206d3e9
<mask token>

<mask token>
s[0] ^= 52
s[2] ^= 50
s[3] ^= 136
<mask token>
print(s)

s = list(b'x1|\xddX')
s[0] ^= 52
s[2] ^= 50
s[3] ^= 136
s = bytes(s)
print(s)

s = list(b'x1|\xDDX')
s[0] ^= 0x34
s[2] ^= 0x32
s[3] ^= 0x88
s = bytes(s)
print(s)

