Re: Infiltrate Challenge #1

[Nicolas Waisman <nicolas () immunityinc com>]

We have a winner!! Congratulation Gaston, we hope to see you at
Infiltrate in April!

The challenge have two simple step.

Challenge1.mp3
The audio have a cheerful lady reading a list of numbers in spanish, the
where two possibles ways to resolve it: listening to the audio and
writing the number by hand (very error prone) or extracting it
programatically like Gaston did (Check solution_1.py).

As a result, you get an image in .png file format, this was hidden a
simple message using a simple LSB steganographic algorithm (solution_2.py).

For those curious, the secret message was
#BOOM# NORTH KOREA WAS HERE :]

(Sounds familiar, right?)

See you at Infiltrate
Nico



On 01/07/2015 12:35 PM, Nicolas Waisman wrote:
> While jogging through South Beach beautiful boardwalk, we accidentally
> tune-up this weird radio station. Our attribution experts (tm) said
> that this is most likely HM01 from La Havana.
>
> We thought we could use some help from the community to find out the
> the secret message, and give a free Infiltrate  ticket
> (http://www.infiltratecon.com) to the first person that find the
> message and send a write-up to infiltrate () immunityinc com
>
> Here is the file:
>  http://www.infiltratecon.com/downloads/Challenge1.mp3
>
> Cheers
> Nico
> _______________________________________________
> Dailydave mailing list
> Dailydave () lists immunityinc com
> https://lists.immunityinc.com/mailman/listinfo/dailydave

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