While working through static analysis, we determined that this binary is indeed malicious, but we also saw how much mental work we needed to get to that point. Using a debugger, especially one with a GUI, can speed up that manual process a bit by giving us a visual indication of changes to the stack, the registers, and so on.
In this recipe, we'll work with EDB to analyze the polymorphed reverse shell binary, which should help us visualize and understand the impacts of polymorphism better.