Helen was first crypto challange in APAIUT-CERT CTF which had 20 points .
challange was a text file including lot of dot’s.
First i tested with Notepad++ from View > Show Characters > All Characters and found lot of dot’s with higher level something like Morse Code .
but i couldnt decode it with Morse then i tried PigPen and Mason cipher but couldnt achive anything again.
third and last way was Braille of Blind people , found dictionary in google an tried to decode it
This Link : http://www.euroblind.org/resources/braille-converter/
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