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After running the script, padbuster outputs the decrypted plaintext. After running the script, padbuster outputs the decrypted
Output:
...
Decrypted value found:
"user": "guest", "role": "user", "flag": "FLAGn0t_4ll_0r4cl3s_4r3_1n_d3lph1"
The attack decrypted the data, revealing that the flag was hidden inside the encrypted token the whole time. The attack decrypted the data, revealing that the
(Alternative Scenario: If the flag wasn't in the token, we could use the same technique to forge a new token. By knowing the Intermediate state, we can XOR it with desired plaintext to generate a valid ciphertext for an admin account, e.g., changing role: "user" to role: "admin".)