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# TU CTF 2018 - easyDOS

## Description
A witch holds the key, but they know some old school tricks. (Difficulty: Normal)

nc 18.217.136.192 12345

## Solution
This challenge implied some guessing and we somehow overthought it at the beginning.

When connecting we see the following text.

![msg1](./img/msg1.png)

No matter which path we pick, the next message will be:

![msg2](./img/msg2.png)

Followed by:

![msg3](./img/msg3.png)

So what do we want? Definitely the flag. But how do we get it? In the end the answer was quite simple...

![msg4](./img/msg4.png)


TUCTF{W)(3N_V1RU2_AU7H0R2_W3R3_CR3471V3}


## Techno
Note that the server was infected by [Tecnho](http://malware.wikia.com/wiki/Techno). Once connected, we had only a given amount of time before it was triggered.

Original writeup (https://github.com/ctf-epfl/writeups/tree/master/tuctf18/easyDOS#tu-ctf-2018---easydos).