picoCTF 2025

I participated in picoCTF 2025 and did not know what to expect.

This was my first CTF and I think that it was a good introduction to these kinds of events.

A lot of the challenges were straightforward.

I completed Shuffle, Chalkboard and had started to sink my teeth into the Sage challenge, when I came back the next morning to find that there was a message saying that the Sage, Outpost, MSS-Advance, Shuffle, and Chalkboard challenges had been removed.

This was frustrating because of the wasted time spent on solved challenges.

I had even started progress on Sage, but oh well:

• LatticeHacks

• Factoring a RSA modulus given parts of a Factor

I really only worked from March 7 to March 11 and I got rank 710.

I was working on the Echo Valley challenge, but I could never get the return address correctly overwritten. Probably related to ASLR.