Knowing that the input and the output is equal to each other, and we have "CTF{" and the first 4 char and the last char have to be "}" and the input is len 15. 
With that we input "CTF{0000000000}" to the input and then check the xmm0 register before the strncmp call.
And then look up the output position at the shuffle table and get those output as our new input for the next input. For the full write up check [this](https://github.com/acheron2302/CTF-writeup)