Katycat Category: Forensics Points: 175 Description: katycat trying to find the flag but she is lazy. will you help her to find the flag? Author: cryptonic007 Given: katy.png Writeup Let’s take a peek at what we are working with: Welp at least it’s a cute cat lol. Next step I like to do is check the contents of the PNG in a hex editor. I use HxD to do this....
Picture Lab: Activity 10 Category: Forensics Points: 100 Description: Dear APCSA students, You thought you were done with Picture Lab. Unfortunately, you were wrong. We’re sorry. We should not have pushed this challenge out, it was irresponsible for us to deploy a meme challenge in the middle of a very serious “Catch-The-Flag” competition. We originally wrote this challenge as a joke, hoping that it would poke fun at Collegeboard’s APCSA “Picture Lab”; however, we now realize that this decision was insensitive and outright disrespectful to all those who have to solve the challenge....
Sensitive Category: Forensics Points: 150 Description: Author: Lumpus Hint: “Not sure what to make of this…” Given: File named “sensitive” Writeup The file didn’t have any extension added to the end so I couldn’t tell the type of file, so I ran the “file” command on Linux. It told me it was a data file, which doesn’t give much help. I opened the file in HxD (a hex editor) and noticed that it was a PDF via the header and footer....
Alien Transmission 1 Category: Forensics/OSINT Points: 219 Description: I was listening to my radio the other day and received this strange message… I think it came from an alien? ~BobbaTea#6235 Given: command_1 Writeup Listening to the message doesn’t really give us much, but we have a few ways to try to analyze this. First thing I do is pop it open in Sonic Visualizer to see if anything pops up in the spectrogram or if I can see anything interesting like a pattern in the frequencies, but nothing special there....