Block cipher challenge

Level: CTR mode

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



Ciphertext (hexencoded), for easy copy-paste

002c6ceda06eeea6cef2b8096315731558225b2fb1bd8d0ee004b062ef0bb37b1f530fa84647ce31f9471e610c5edab137774a96ef730e9f71c2ac93448db7f0

Ciphertext (hexencoded):

002c6ceda06eeea6cef2b80963157315 58225b2fb1bd8d0ee004b062ef0bb37b 1f530fa84647ce31f9471e610c5edab1 37774a96ef730e9f71c2ac93448db7f0

Plaintext (hexencoded):

002c6ceda06eeea6cef2b80963157315 7b22757365726e616d65223a20226775 657374222c202269735f677565737422 3a20747275657d090909090909090909

Plaintext:

\x00,l\xed\xa0n\xee\xa6\xce\xf2\xb8\tc\x15s\x15 {"username": "gu est", "is_guest" : true}\t\t\t\t\t\t\t\t\t

Final plaintext

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