Ghidra: Stack cookies detecting and skipping

[lab313ru]

For now it looks like this:

Is it possible to skip such variables at the start and the end of function?

[agnosticlines]

You mean detect stack cookies and omit them? That'd definitely be doable in a plugin as there's a nice metric for it, if at the function epilogue a data check is done against a variable on the stack.

But would be really nice to see this in core.

[lab313ru]

Algo is simple: some global variable xored with SP. And in the end of function it does the same

[paulsapps]

Maybe configure the address of the global it checks to avoid false positives