# Imago Qualitatis

Description :

```text
A wondrous electromagnetic wave was captured by a metal-stick-handed devil.
“But.. What? No, not this way. Maybe, if I turn around like this… Aha!”

Attached file : [ImagoQualitatis.7z]
```

The ImagoQualitatis.7z archive contains the `gqrx_20230421_133330_433000000_1800000_fc.raw` file of size 4GB+.

I searched about the term `gqrx` on google, and found that it was a radio transmission raw file.
/
The software used to generate this file was `gqrx sdr`, which is an open source software defined radio receiver (SDR) powered by the GNU Radio and the Qt graphical toolkit.

Then I installed it on my machine using the following command

`sudo apt-get install gnuradio gqrx`

Then Launched the software with the command `gqrx`. It loaded the software.


I dont know how to play the `raw` file in this software.

This tutorial helped me to load the raw file on the gqrx software.

I played the raw file and observed the spectrum displayed on in the software console. I saw flag characters were display with some delay in between them.


Noted down the characters on paper.

> `Flag : DANTE{n3w_w4v35_0ld_5ch00l}`

# [Original Writeup](https://themj0ln1r.github.io/posts/dantectf23)

Original writeup (https://themj0ln1r.github.io/posts/dantectf23).