Block cipher challenge

Level: CTR mode

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



Ciphertext (hexencoded), for easy copy-paste

94302dcca6147939e2828c0840332cdd046360ad1b361f4c79ed1bc59db9c025c4acfa50159d9905037eacf00f2551dadbe43d2fceee75853e47489a12518e10

Ciphertext (hexencoded):

94302dcca6147939e2828c0840332cdd 046360ad1b361f4c79ed1bc59db9c025 c4acfa50159d9905037eacf00f2551da dbe43d2fceee75853e47489a12518e10

Plaintext (hexencoded):

94302dcca6147939e2828c0840332cdd 7b22757365726e616d65223a20226775 657374222c202269735f677565737422 3a20747275657d090909090909090909

Plaintext:

\x940-\xcc\xa6\x14y9\xe2\x82\x8c\x08@3,\xdd {"username": "gu est", "is_guest" : true}\t\t\t\t\t\t\t\t\t

Final plaintext

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