SemaSCDG crashes when enabling hooks on windows executables

[Thib-fkr]

Pre-requisites (starting with the default config file)

• enable the hook plugin with plugin_hooks = true in the config file
• enable sim files with sim_file = true in the config file
• fix the plugin hook initialisation crashes (pull requests SemaSCDG.py crashes when enabling plugins #42 and SemaSCDG.py crashes when enabling plugin_hook #43 )

Issue

When analysing a windows executable that contains any recognized hard-coded byte sequence from PluginHooks.internal_function_hooks:

File ".../sema_scdg/application/SemaSCDG.py", line 563, in run
    self.setup_hooks(proj, state, os_obj)
  File ".../sema_scdg/application/SemaSCDG.py", line 475, in setup_hooks
    self.plugins.enable_plugin_hooks(self.content, state, proj, self.call_sim)
  File ".../sema_scdg/application/plugin/PluginManager.py", line 54, in enable_plugin_hooks
    self.hooks.hook(state,proj,call_sim)
  File ".../sema_scdg/application/plugin/PluginHooks.py", line 248, in hook
    call_sim.custom_simproc_windows["custom_hook"]["MagicRATForceHook"](plength=len(self.internal_functions_hooks[fun])),
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'WindowsSimProcedure' object has no attribute 'custom_simproc_windows'

custom_simproc_windows does not seem to appear in any other place than when it is used in PluginHooks.hook().

Additional information

Adding something similar to the following snippet in procedures/WindowsSimProcedure.__init__() seems to prevent the crash from happening.

self.custom_simproc_windows = {}
self.custom_simproc_windows["custom_hook"] = {}
from .windows.custom_hook.HookName import HookClass # Replace HookName by the name of the relevant file in procedures/windows/custom_hook/ and HookClass by the name of the SimProc
self.custom_simproc_windows["custom_hook"]["HookName"] = HookClass # Same here with HookName and HookClass

While I was able to confirm that the class hooked this way were initialized by placing print statements in HookClass.__init__(), I was not able to confirm whether or not the hook themselves (HookClass.run()) are properly executed.