Block cipher challenge

Level: CTR mode

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



Ciphertext (hexencoded), for easy copy-paste

6e131d0eb087be9ec56f2bf130e78a013820f0aaa8c5cd1c34ab579a7a76ea573be87a4d8d93c6b9f0e8cac33c3aa0e76b75cfd8565e82226239dade7f80c787

Ciphertext (hexencoded):

6e131d0eb087be9ec56f2bf130e78a01 3820f0aaa8c5cd1c34ab579a7a76ea57 3be87a4d8d93c6b9f0e8cac33c3aa0e7 6b75cfd8565e82226239dade7f80c787

Plaintext (hexencoded):

6e131d0eb087be9ec56f2bf130e78a01 7b22757365726e616d65223a20226775 657374222c202269735f677565737422 3a20747275657d090909090909090909

Plaintext:

n\x13\x1d\x0e\xb0\x87\xbe\x9e\xc5o+\xf10\xe7\x8a\x01 {"username": "gu est", "is_guest" : true}\t\t\t\t\t\t\t\t\t

Final plaintext

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