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th3jackers 2015 CTF misc100 writeup

24 January 2015 No Comment

Weird Text (misc100)

Description: Giv m th flg plz !

Part of the supplied file was:

______
____________
_
_______
{
_______
1
______________________
3

_____________
3

____________________
________
4

______
____________
_
_______
}

And it looked like it could be flag{STUFF_HERE}

So if you guess that “______ ____________ _ _______” was flag.
It’s easy to know the obfuscation used.
6 = f
12= l
1 = a
7 = g

It’s obvious it’s using charset of abcdefghijklmnopqrstuvwxyz

So i wrote a little script to parse it and give the solution.
misc100.py

Although doing it by hand would have been feasible too, it’s not long.

flag{g1v3-m3-th4-flag}

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