Block cipher challenge

Level: CTR mode

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



Ciphertext (hexencoded), for easy copy-paste

d49650af18de38168146a4a3f4a09a6923d8b8f78c333039ca43130867ecad234e64ed26d349a6f54049b7920b6258e8e04e98c2fd00ceeb0f6bfeca49e99cf8

Ciphertext (hexencoded):

d49650af18de38168146a4a3f4a09a69 23d8b8f78c333039ca43130867ecad23 4e64ed26d349a6f54049b7920b6258e8 e04e98c2fd00ceeb0f6bfeca49e99cf8

Plaintext (hexencoded):

d49650af18de38168146a4a3f4a09a69 7b22757365726e616d65223a20226775 657374222c202269735f677565737422 3a20747275657d090909090909090909

Plaintext:

\xd4\x96P\xaf\x18\xde8\x16\x81F\xa4\xa3\xf4\xa0\x9ai {"username": "gu est", "is_guest" : true}\t\t\t\t\t\t\t\t\t

Final plaintext

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