x64dbg plugin instruction callback:)

[5ing]

How can I perform instruction callback, for example, an instruction will call a system function, and it will call the callback function I specified before it executes the system function.

[blaquee]

No such functionality exists. This would require you to write a plugin that has a tracing capability to do that. Or an alternative approach would be to write a plugin that sets a breakpoint on system calls in question and provide its own callback mechanism.