22. can see the pattern x1aLxd23kxcax1dxd7detected previously with the username that
contained 20 a.
can then remove the first 8 bytes of information and reencode our payload to get a new
cookie:
x1aLxd23kxcax1dxd7 x982x10oxc6pqxe4xdcxde9xc5xa2x87/xc6