Block cipher challenge

Level: CTR mode

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



Ciphertext (hexencoded), for easy copy-paste

0a8a56e955528c14418be9bb70a49e5b119baae2180db0b3418fae1f2a04f06a1b7347d0c1a15fb547cf6848b6a56abe8058f59ca5dd940b43785863402c8fc8

Ciphertext (hexencoded):

0a8a56e955528c14418be9bb70a49e5b 119baae2180db0b3418fae1f2a04f06a 1b7347d0c1a15fb547cf6848b6a56abe 8058f59ca5dd940b43785863402c8fc8

Plaintext (hexencoded):

0a8a56e955528c14418be9bb70a49e5b 7b22757365726e616d65223a20226775 657374222c202269735f677565737422 3a20747275657d090909090909090909

Plaintext:

\n\x8aV\xe9UR\x8c\x14A\x8b\xe9\xbbp\xa4\x9e[ {"username": "gu est", "is_guest" : true}\t\t\t\t\t\t\t\t\t

Final plaintext

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