I am playing as a part of @blackb6a this time for perfect blue’s annual pbctf. This time there are six crypto challenges and I first blooded 🩸 half of them. I solved five of them, and collaborated with TWY (who made 99% of the process) for Seed Me. In this blog post, I will cover Seed Me and Yet Another RSA. I tried to make the whole post beginner friendly, hence included more details than necessary.

I was originally going to discuss all of the crypto challenges, but I found it is too demanding and tiring.

This is another time @blackb6a unites and plays UIUCTF together. It was my fourth time playing UIUCTF, and I still found the challenges fun. Although the crypto challenges are relatively easy, I had a lot of fun solving phpfuck with @02E774.

This is me playing another Google CTF with @blackb6a, ending up on the 25th place. I aced the crypto challenges and solved some challenges with my teammates. I have a strong feeling that Black Bauhinia grown a lot between the two Google CTFs and I am often backed by my teammates this time. Anyway, I will be covering all of the crypto challenges in this blog post.

This is the summary for me on the second day I played DEF CON CTF. The commentary for day 1 is available here. In this blog post, only the solutions for qoo-or-ooo, back-to-qoo and pooow-buddy are written. Since there are a lot of new stuff, I may not be able to explain them well. Please bear with me…

I played DEF CON CTF Quals once again with @Shellphish and we ended up at the 10th place. This blog post describes what actually was going on from my side. If you are looking for an informative blog post, this is not a good-read for you. There would be a little useful information, since I am just hanging around most of the time. I will even shamelessly copy some memes online to make the blog post looked rich in content.

After all, I am only able to solve nooombers (on day 1), qoo-or-ooo and back-to-qoo (on day 2). What happened on day 2 from my point of view is considerably more interesting.