Earlier quoted context omitted.
I'm on that as well, for me it seems it just decodes some Unicode characters and does arithmetic to print the message, I don't know why it's taking so long or how can I speed it up.
It's calculating prime numbers which is why it's slow. Now if only I was to work out which prime numbers it wants... :)
Google CTF 2019
111–120 of 140 posts
Re: Google CTF 2019
#112Earlier quoted context omitted.
Running it with pypy sped it up quite a bit and got it far enough to figure out the remaining portion of the URL.
Haha, I was gonna try exactly that, but I got too lazy trying to install pypy3 on my shitty centos box. My other option was to translate it into real assembly, but that also seemed like more work that I wanted to put into it.
I'm guessing the flag may be in the rest of the message to be decoded.
Re: Google CTF 2019
#113Earlier quoted context omitted.
Haha, I was gonna try exactly that, but I got too lazy trying to install pypy3 on my shitty centos box. My other option was to translate it into real assembly, but that also seemed like more work that I wanted to put into it.
I guessed the URL, but found nothing on it. I'm guessing the flag may be in the rest of the message to be decoded.
Re: Google CTF 2019
#114Earlier quoted context omitted.
I guessed the URL, but found nothing on it. I'm guessing the flag may be in the rest of the message to be decoded.
Check the pngs across the domain. There is something special in at least one of them.
I scrapped and downloaded around 55 pngs.
Re: Google CTF 2019
#115Earlier quoted context omitted.
Check the pngs across the domain. There is something special in at least one of them.
Already checked them out, for EXIF data, visually and also inverted colors. What I am missing? I scrapped and downloaded around 55 pngs.
As the comment above implies, it seems like my approach was wrong and the answer is in one of the images I guess
Re: Google CTF 2019
#116Earlier quoted context omitted.
Already checked them out, for EXIF data, visually and also inverted colors. What I am missing? I scrapped and downloaded around 55 pngs.
Yeah, I found 55 profiles/pngs. Tried ordering the profiles by the image # (from 2 to 56). Noticed the profile names are also a variation of two emojis, so tried looking into binary/morse, but nothing. As the comment above implies, it seems like my approach was wrong and the answer is in one of the images I guess
Re: Google CTF 2019
#117Earlier quoted context omitted.
Already checked them out, for EXIF data, visually and also inverted colors. What I am missing? I scrapped and downloaded around 55 pngs.
Yeah, I found 55 profiles/pngs. Tried ordering the profiles by the image # (from 2 to 56). Noticed the profile names are also a variation of two emojis, so tried looking into binary/morse, but nothing. As the comment above implies, it seems like my approach was wrong and the answer is in one of the images I guess
Re: Google CTF 2019
#118Earlier quoted context omitted.
Already checked them out, for EXIF data, visually and also inverted colors. What I am missing? I scrapped and downloaded around 55 pngs.
Yeah, I found 55 profiles/pngs. Tried ordering the profiles by the image # (from 2 to 56). Noticed the profile names are also a variation of two emojis, so tried looking into binary/morse, but nothing. As the comment above implies, it seems like my approach was wrong and the answer is in one of the images I guess
Re: Google CTF 2019
#119Re: Google CTF 2019
#120I’m always amazed how a company that creates the world’s most popular mobile OS and web browser is unable to code a decent mobile webpage. Scrolling this page is sufferable, anchor links don’t work well, etc. Basic stuff. Look no further than G Suite, Google Cloud for more examples.
I mean, it's not like this CTF requires you to unzip data, use a terminal (decrypt Base64, use Telnet and python scripts) and read weird files with unreadable characters
You should be able to read the page on mobile effortlessly.
The fact that is polemic is symptomatic.