 All right. Hello everyone welcome back to their YouTube video. My name is John Hammond and this time around I want to be showcasing some of the challenges from the junior CTF, which was going on this this past weekend, so honestly, uh, I had a lot of fun with the CTF. I think I plateaued it right now Currently we're at 13th place. I guess Okay, yeah tied for 13. We've been fluctuating. The highest I got us was about third place and I approve of that I do I do have I do have proof of that I'll I'll showcase a little photo here. We we were doing well up at the top for a little bit, but I plateaued I can't solve any more challenges. So I'll try and review and showcase demonstrate the stuff that I did solve And we'll we'll move along So honestly not the best CTF in that there was a whole lot of guessing and there were a lot of language barriers So, uh, I kind of struggled with some of the challenges and stuff, but I still wanted to show them off to you Um, the ones that I did solve So the first one that was apparently a trivial web task Which I struggled with for a little bit because it's just this image no description and I had googled this I had like google reverse image searched it Uh, I downloaded it ran exit tool foremost bin walk all the usual line for to see like what the heck it was But it's just a web challenge, but there was no website or web link or anything So, um, I didn't think to look at the web source or like the html of this web page But once you do that, you'll notice Okay, here's the challenge and everything and There's two images here One of which is actually visible to us, which is this guy So I'll copy that link Let's crank it out and there is the actual image that's being presented to us But this width equals zero is obviously hidden behind that other image So that has to be something interesting and there it is it's So believe it or not, this is our flag Which I guess I mean you just have to assume that there is no flag format for the ctf also So that's a good a good real good thumbs up for the ctf really good. Um, and I'll just Save this as juniors So of course, you'd have to type this all out by hand and try and correct it If you if try and submit that if you wanted to and that was also a fun thing that I had to do With some other challenges All right thing and I'll just save it So when we actually get in there You would type this all out, but To avoid that I try to just run like tesseract on it And I was able to to do some ocr and like optical character recognition And you could actually see it so it is able to get this all out and then I just td Sorry tr delete all new lines and that would be the flag But this is not uh foolproof This does have some miscrevencies like this. Oh is actually a zero um So I didn't want to type it all out, but I just looked through it and tried to find the mistakes and I ended up submitting that as the flag so Silly thing should have known to view the source as a web challenge But I didn't think I thought they would like link me to an actual website It wouldn't be in the challenge description itself So odd on that but I did end up solving the challenge and uh tesseract is a really cool thing to do ocr If you haven't heard of it tesseract ocr Yeah, so definitely check that out if you haven't seen it before Um obstacle character recognition is pretty nice Um for when you have a bunch of stuff and an image and you can't like copy and paste that and you don't want to have to type it out by hand So yeah Thanks for watching guys. Hope you enjoyed this one Um really simple really easy first couple of challenges are apparently they said these tasks are not supposed to be difficult They're all designed for school teams I didn't solve a whole lot, but I will showcase the ones that I did get and demonstrate them for you guys So thanks for watching. I'll see you in the next video