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The tutorial focuses on identifying and understanding a use-after-free vulnerability in heap level 2 of exploit-exercises.com. The code features a while loop in main that prints variables auth and service, both pointers to memory objects. Auth holds attributes name and an integer, while service points to a string. The program reads input securely using fgets to prevent buffer overflows. Commands like auth, reset, service, and login are checked with if statements. Initially, auth and service pointers are , with the vulnerability set to be explored further.
