ciphertext (hex): d19f4df5a093edd62458fd6843c5b3ff98a86b51e0b8e81ac3ef6accc6c8db876b6a737f7830a0e150fa3acf761c3aef398973a16080b01032fc2bc520a0e6d0
khoi phuc        : b'flag{padding_oracle_is_dangerous_ok}'
OK, giai ma thanh cong ma khong biet key
