Block cipher challenge

Level: CTR mode

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



Ciphertext (hexencoded), for easy copy-paste

60637baaed3e9d02cb26dc88eed84213b0f1f53f152f43de95078dae985aca427257c3748f4660b0eec294ec923ff73b5570c0e89d98a1cc491b607937ab32fa

Ciphertext (hexencoded):

60637baaed3e9d02cb26dc88eed84213 b0f1f53f152f43de95078dae985aca42 7257c3748f4660b0eec294ec923ff73b 5570c0e89d98a1cc491b607937ab32fa

Plaintext (hexencoded):

60637baaed3e9d02cb26dc88eed84213 7b22757365726e616d65223a20226775 657374222c202269735f677565737422 3a20747275657d090909090909090909

Plaintext:

`c{\xaa\xed>\x9d\x02\xcb&\xdc\x88\xee\xd8B\x13 {"username": "gu est", "is_guest" : true}\t\t\t\t\t\t\t\t\t

Final plaintext

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