Maybe this message is from aliens.
We are given the following text file (originally - a single long line, split into several lines for clarity):
1 2 3 4 5 6 7 7fffffffffffffffffffffffffffffffbffff0e10419dff07fdc3ffdaeab 6deffdbfff6ffed7f7aef3febfffb7ff1bfbc675931e33c79fadfdebbae7 aeddedb7dafef7dc37df7ef6dbed777beedbedb77b6de24718f260e0e718 79fffffffffffffffffffffffffffffffffffffffffff07f87fc7f9fffff fffdbfbbfdbfeffffffffebfdffdfff7ffffff871c33e6fe7bffffffd5ae feed62dcffffffeadf9fb8bb0efffffff56df5db6dbf7ffffffaa0c21e19 e3bffffe07ffffffffff9fffffffffffffffffffffffffffffffffffffff
Converting it to a binary file and doing a
binwalk on it brings no useful results. However it does look like it has some repeating patterns in it. Let’s convert it into a binary string representation with the following script:
1 print bin(int(open("msg.txt","r").read(),16))[2:].replace("0",".").replace("1","#")
The script generates series of
#’s. Let’s copy the output into
Notepad++, reduce the font to a minimum (press
Ctrl+- repeatedly), and resize the window continuously to see if we can spot something.
The following pattern is revealed:
The flag is