Block cipher challenge

Level: CTR mode

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



Ciphertext (hexencoded), for easy copy-paste

2b452739b6ed6ba95d5529e3c3220aab232ed380a17fcef9e25af2d14b58e529b90e9280c9e492afa5f4af6bd221893ea32c5a865f71550b71af74f6ccdf1245

Ciphertext (hexencoded):

2b452739b6ed6ba95d5529e3c3220aab 232ed380a17fcef9e25af2d14b58e529 b90e9280c9e492afa5f4af6bd221893e a32c5a865f71550b71af74f6ccdf1245

Plaintext (hexencoded):

2b452739b6ed6ba95d5529e3c3220aab 7b22757365726e616d65223a20226775 657374222c202269735f677565737422 3a20747275657d090909090909090909

Plaintext:

+E\'9\xb6\xedk\xa9]U)\xe3\xc3"\n\xab {"username": "gu est", "is_guest" : true}\t\t\t\t\t\t\t\t\t

Final plaintext

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