Rating: 5.0


Can you program something that is fast enough to submit the solution before the time runs out?


On this page we get a code to send back via a POST method in less than 1 second


rm index header

curl --output index -D header http://timesink.be/speedy/index.php

cookie=$(cat header | grep Cookie | cut -d ' ' -f 2 | tr -d ';')
code=$(cat index | cut -d '>' -f 13-14 | cut -d '<' -f 1)

curl -X POST --cookie "$cookie" --data-raw "inputfield=$code" http://timesink.be/speedy/index.php

We get this response :

<div align="center">
<h1>Are you fast enough? </h1>
<div align="center">You took: 0 second(s) to complete the task.</div>

<div align="center">Congratulations, you completed the task in under 1 seconds!</div>
<div algin="center">The flag is: brixelCTF{sp33d_d3m0n}</div>

flag : `brixelCTF{sp33d_d3m0n}`

Original writeup (https://github.com/Pynard/writeups/blob/main/2020/BRIXEL/challenges/fast_enough.md).