Block cipher challenge

Level: CTR mode

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



Ciphertext (hexencoded), for easy copy-paste

ed258a8be8abd856be3a3c3a027c9f52f02882fdd1b4ef22b8b451a0e34f0583c64d93e77102ce6f4c7ab172de13a318263cd6fec608b46296ff84b6a2eafb27

Ciphertext (hexencoded):

ed258a8be8abd856be3a3c3a027c9f52 f02882fdd1b4ef22b8b451a0e34f0583 c64d93e77102ce6f4c7ab172de13a318 263cd6fec608b46296ff84b6a2eafb27

Plaintext (hexencoded):

ed258a8be8abd856be3a3c3a027c9f52 7b22757365726e616d65223a20226775 657374222c202269735f677565737422 3a20747275657d090909090909090909

Plaintext:

\xed%\x8a\x8b\xe8\xab\xd8V\xbe:<:\x02|\x9fR {"username": "gu est", "is_guest" : true}\t\t\t\t\t\t\t\t\t

Final plaintext

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