Block cipher challenge

Level: CBC mode

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



Ciphertext (hexencoded), for easy copy-paste

2518b9be714e3c66ec8d0b94587092515f8ea8a32a37aa55f135ab7629201f42f2ed1d116a5fb082a0312c89a1d0f4a2f33cc7c3e087a1ca2a37cb244f71eaf8

Ciphertext (hexencoded):

2518b9be714e3c66ec8d0b9458709251 5f8ea8a32a37aa55f135ab7629201f42 f2ed1d116a5fb082a0312c89a1d0f4a2 f33cc7c3e087a1ca2a37cb244f71eaf8

Plaintext (hexencoded):

2518b9be714e3c66ec8d0b9458709251 7b22757365726e616d65223a20226775 657374222c202269735f677565737422 3a20747275657d090909090909090909

Plaintext:

%\x18\xb9\xbeqN<f\xec\x8d\x0b\x94Xp\x92Q {"username": "gu est", "is_guest" : true}\t\t\t\t\t\t\t\t\t

Final plaintext

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