WxMCTF '23 Pwn 2 - ICS5U
Here at WLMAC, we offer superior courses like ICS5U. Don't believe me? Here's my ICS5U ISP which is a program that can tell you if ANY Java expression is valid. The flag can be located at /flag.txt
Hint: https://docs.oracle.com/javase/tutorial/java/javaOO/initial.html