README.md

challenges

osu/smoked (415 solves / 105 points)

Simply watch the replay where flag is written with smoke.

osint/kfc-with-who? (384 solves / 106 points)

Challenge refers to the famous osu! streamer, ThePooN. Flag is in his channel.

osu/sanity-check 1/2

Either play the map and save osr, or edit osr file with online tools to fake the score.

misc/egg-pain-∞ (111 solves / 126 points)

Select all objects and we can clearly see all objects on the grid form a QRCode. Draw it or use some PS skills to get the code and scan it.

forensics/nathan-on-osu (162 solves / 117 points)

The vulnerability is aCropalypse in older Windows systems. Use online tool such as https://acropalypse.app/ and set resolution to 1920x1080 to recover the flag.