The modbus-vcr from reidmefirst

Ettercap build & run failiure

Hi,
I came across this plugin and want to give it a try, but I am not able to build the Ettercap with this plugin. I tried it with the newest version (0.8.3), added the plugin into the plug-ins/modbus_vcr and modified CMakeLists (just added modbus_vcr to the PLUGINS list). Then I commented all calls (at least I think) to sslw functions, but during building I keep getting this errors:

/home/matej/repositories/ettercap-0.8.3/plug-ins/modbus_vcr/modbus_vcr.c: In function ‘modbus_insert_redirect’:
/home/matej/repositories/ettercap-0.8.3/plug-ins/modbus_vcr/modbus_vcr.c:985:6: error: ‘GBL_CONF’ undeclared (first use in this function); did you mean ‘EC_GBL_CONF’?
  if (GBL_CONF->redir_command_on == NULL){
      ^~~~~~~~
      EC_GBL_CONF
/home/matej/repositories/ettercap-0.8.3/plug-ins/modbus_vcr/modbus_vcr.c:985:6: note: each undeclared identifier is reported only once for each function it appears in
/home/matej/repositories/ettercap-0.8.3/plug-ins/modbus_vcr/modbus_vcr.c:992:34: error: ‘GBL_OPTIONS’ undeclared (first use in this function); did you mean ‘IP_OPTIONS’?
  str_replace(&command, "%iface", GBL_OPTIONS->iface);
                                  ^~~~~~~~~~~
                                  IP_OPTIONS
/home/matej/repositories/ettercap-0.8.3/plug-ins/modbus_vcr/modbus_vcr.c: In function ‘modbus_remove_redirect’:
/home/matej/repositories/ettercap-0.8.3/plug-ins/modbus_vcr/modbus_vcr.c:1028:6: error: ‘GBL_CONF’ undeclared (first use in this function); did you mean ‘EC_GBL_CONF’?
  if (GBL_CONF->redir_command_on == NULL)
      ^~~~~~~~
      EC_GBL_CONF
/home/matej/repositories/ettercap-0.8.3/plug-ins/modbus_vcr/modbus_vcr.c:1032:34: error: ‘GBL_OPTIONS’ undeclared (first use in this function); did you mean ‘IP_OPTIONS’?
  str_replace(&command, "%iface", GBL_OPTIONS->iface);
                                  ^~~~~~~~~~~
                                  IP_OPTIONS
plug-ins/CMakeFiles/modbus_vcr.dir/build.make:62: recipe for target 'plug-ins/CMakeFiles/modbus_vcr.dir/modbus_vcr/modbus_vcr.c.o' failed
make[2]: *** [plug-ins/CMakeFiles/modbus_vcr.dir/modbus_vcr/modbus_vcr.c.o] Error 1
CMakeFiles/Makefile2:789: recipe for target 'plug-ins/CMakeFiles/modbus_vcr.dir/all' failed
make[1]: *** [plug-ins/CMakeFiles/modbus_vcr.dir/all] Error 2
Makefile:129: recipe for target 'all' failed
make: *** [all] Error 2

I've tried to add the prefixes manually, then it builds ok, but when I try to start the script, I got stuck at "modbus_vcr: plugin running..."

I've also tried to go through source code to pinpoint a possible problem, but I am not that skilled in C to fully understand it (also I really don't know how to write an Ettercap plugin).

Could you please point me to the version where it works, or help me fix this issue? I would really like to use this plugin for Modbus attack scenario and there are not much other MitM tools to use.

Thanks, Matej

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