Information#
Version#
| By | Version | Comment |
|---|---|---|
| noraj | 1.0 | Creation |
CTF#
- Name : INS'hAck 2018
- Website : ctf.insecurity-insa.fr
- Type : Online
- Format : Jeopardy
- CTF Time : link
Self congratulation - Misc#
This website is pretty cool, right? I mean, we did a pretty good job esthetically and stuff, huh?
Please submit as `INSA{insert string found here}
Embedded into the image we can see some kind of what looks like a barcode. But it isn't.
Just replace white pixels with 0 and black pixels with 1 and you get: 001100010011001000110011001101000011010100110110001101110011100000.
Let's use ruby to convert binary to ASCII:
irb(main):019:0> ["001100010011001000110011001101000011010100110110001101110011100000"].pack("B*")
=> "12345678\x00"Here is the flag: INSA{12345678}.