# Imago Qualitatis
Description : 
```textA 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. 
![gqrx](https://themj0ln1r.github.io/assets/img/post_img/dante23_imago1.png)
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.
![gqrx](https://themj0ln1r.github.io/assets/img/post_img/dante23_imago2.png)
Noted down the characters on paper.
> `Flag : DANTE{n3w_w4v35_0ld_5ch00l}`
# [Original Writeup](https://themj0ln1r.github.io/posts/dantectf23)