Official Signals Discussion

Official discussion thread for Signals. Please do not post any spoilers or big hints.

Is there anyone who can help me to solve this hardware challenge

With any small hint

got it

Type your comment> @0xSebin said:

With any small hint

the iss hint is the first step. this challenge is almost like something youd see on “TV”.

feel free to pm for another nudge

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Thanks SAgnihotri - Problem is I don’t watch a lot of TV. :frowning:

If only I had a way to watch TV, my scan lines are too slow. :crying_cat_face:

Can someone please help me? I have the flag but it came out lets say hard to read and it is not being accepted.

Hi Mtitter,

I had also some troubles with the reading of the file.

I just tried and tried and found out that the i, l & 1 are kind the same in picture.

To help you, HTB{xlxx-xxxx_xxlxx1x1xx_xxx_xxx1x_xxxxxx}

The l is a lowcap (ell) L

I hope this helps you and others.

Kind regards,


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@tomiza Thanks. I got this one really quickly but was having trouble inputting the flag. Really fun challenge. Thanks @brigante!

Noob here. I need any type of nudge. I feel like it might have been a Spectogram thing but I analyzed it and I don’t see nothing,

Okay I got the flag but it keeps on saying incorrect. its really hard to read

Very interesting challenge. I had no idea about this signals.Thanks for the challenge.