# Information society - easy

This challenge was really easy - but only if you were born before 1990 or
already knew the band Information Society prior to 34C3. tl,dr: The flag is a
```PNG``` picture file which was encoded into audio modem tones (This noise
sounded so familiar!).

After trying 10000 steps which did not lead to anything useful, we
duckduckwent to the internet for help. As it turned out, Information Society
is a band who did something similar back in 1992. They basically modulated the
lyrics of an easter egg track and put the resulting audio file on their *Peace
And Love INC.* album.

That's all we need to know! Thankfully we do not need a modem. Instead we just
use a software called minimodem by [Kamal
Mostafa](http://www.whence.com/minimodem). We feed minimodem our
```information_society_bonustrack.flac```, copy+pasta the minimodem parameters
from the [video title](https://www.youtube.com/watch?v=y3ZT-1y4eeY) and
redirect the command line output into a file. By the way, ```minimodem
--help``` might be useful, if you are interested in what all these parameters
mean.

```minimodem --rx -8 300 -M 2225 -S 205 -f information_society_bonustrack.flac
> output```

After the program is finished, we check the magic number of ouf file or simply
use file command and see, that we got a ```PNG```! Finally, open it up - et
voilà, our flag:

![Imgur](https://i.imgur.com/Ot3lGYK.png)

## 34C3_tut_tut_wat!  

Original writeup (http://admin-admin.at/34c3junior-information-society).