Block cipher challenge

Level: CTR mode

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



Ciphertext (hexencoded), for easy copy-paste

7204926c730f95cca527d0fb06dfeb40267e1e04fc27fa27c736c1652c75bccff437ca19e335fb4dc6a0554cefdff5e9a3113dfd5850fc725ce0fbd221d35289

Ciphertext (hexencoded):

7204926c730f95cca527d0fb06dfeb40 267e1e04fc27fa27c736c1652c75bccf f437ca19e335fb4dc6a0554cefdff5e9 a3113dfd5850fc725ce0fbd221d35289

Plaintext (hexencoded):

7204926c730f95cca527d0fb06dfeb40 7b22757365726e616d65223a20226775 657374222c202269735f677565737422 3a20747275657d090909090909090909

Plaintext:

r\x04\x92ls\x0f\x95\xcc\xa5\'\xd0\xfb\x06\xdf\xeb@ {"username": "gu est", "is_guest" : true}\t\t\t\t\t\t\t\t\t

Final plaintext

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