To make the sauce, in a bowl, mix the soy sauce, fish sauce, oyster sauce, dark soy sauce, and sugar until combined.
To fry the eggs, in a pan over medium-high heat, add the cooking oil and fry the eggs one at a time until the edges are crispy and golden while the yolk stays runny, then remove.
To stir-fry the pork, in a wok over high heat, add the cooking oil and cook the pork for about 3 minutes until lightly browned.
To build the aroma, add the garlic and chilies and stir-fry briefly until fragrant.
To add the sauce, pour in the sauce and stir-fry until the pork is evenly coated.
To finish, add the Thai basil and stir-fry briefly until just wilted.
To serve, spoon the pork over steamed rice and top with the fried eggs.