Block cipher challenge

Level: CTR mode

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



Ciphertext (hexencoded), for easy copy-paste

e2ce8d74c465a6870196a13f20df4c0923f134c24de88de38286afac3e6d18b78f695390a5680ac54e2024ad6d8d1034b1438a1f6acafc9fdf72fd3ebade31a6

Ciphertext (hexencoded):

e2ce8d74c465a6870196a13f20df4c09 23f134c24de88de38286afac3e6d18b7 8f695390a5680ac54e2024ad6d8d1034 b1438a1f6acafc9fdf72fd3ebade31a6

Plaintext (hexencoded):

e2ce8d74c465a6870196a13f20df4c09 7b22757365726e616d65223a20226775 657374222c202269735f677565737422 3a20747275657d090909090909090909

Plaintext:

\xe2\xce\x8dt\xc4e\xa6\x87\x01\x96\xa1? \xdfL\t {"username": "gu est", "is_guest" : true}\t\t\t\t\t\t\t\t\t

Final plaintext

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