Is it permissible to benefit from gold extracted using a device that was brought into Sudan illegally?

There is no harm in benefiting from gold extracted through excavation. As for evading customs and taxes, it is permissible if they are unjustly taken, but it is not permissible if the state imposes them in return for services or to meet the needs of the nation and the interests of the people. In any case, it is not forbidden to use the device to benefit from what is extracted with it.