Block cipher challenge

Level: CBC mode

Sorry, you're not an admin (need is_admin: true)



Ciphertext (hexencoded), for easy copy-paste

ba6bfe643893b3d6b8fb0a42b8c5d29a8813b8fd4f0bed79a88a84a9d29886c725a9cb92497eac8c2ac650447fc091795042f3e18ac3714188c4fe3dbafefe5e

Ciphertext (hexencoded):

ba6bfe643893b3d6b8fb0a42b8c5d29a 8813b8fd4f0bed79a88a84a9d29886c7 25a9cb92497eac8c2ac650447fc09179 5042f3e18ac3714188c4fe3dbafefe5e

Plaintext (hexencoded):

ba6bfe643893b3d6b8fb0a42b8c5d29a 7b22757365726e616d65223a20226775 657374222c202269735f677565737422 3a20747275657d090909090909090909

Plaintext:

\xbak\xfed8\x93\xb3\xd6\xb8\xfb\nB\xb8\xc5\xd2\x9a {"username": "gu est", "is_guest" : true}\t\t\t\t\t\t\t\t\t

Final plaintext

{"username": "guest", "is_guest": true}