Progress has not been as fast as I hoped lately. There are several reasons for this, but most of it is probably due to a lack of planning. When I finally started programming RustRAT I had a very specific idea of what I wanted to start with. After I finished that specific, little part of RustRAT, progressed seemed to halt to a grind.
While I have slowed down some, progress seems slower than it is because my plan is less detailed for this part of the development.
RustRAT uses libffi (more specifically the libffi-rs bindings) to call arbitrary functions at run-time. This works by putting the function’s argument and return types into a struct and providing libffi with a function pointer. Libffi then makes sure that all the arguments are placed in the correct registers or on the stack and calls the function pointer. I am not that proficient with Rust yet, but if anything is unsafe, I am pretty sure this is it.