Post 56 - Deja vu

07 Dec 2023

Task 12, Day 06, Memory corruption Memories of Christmas Past

Memory corruption can occur when you inadvertantly access memory you shouldn’t be able to, such as variable without a max number of characters. This overflows the memory allocated and goes into memory for something else. C++ doesn’t check variable boundaries.

At least sometimes, programs stop reading a variable when the first NULL character is reached. This allows storing shorter strings in variables with larger capacity.

The Task

Abuse the memory to beat the unbeatable game and get the flag.

Flag gotten.

Recommended room

Buffer Overflows