In a wok, heat oil over high heat until beginning to smoke. Add shrimp and stir fry until shrimp turn pink and opaque throughout, 3-5 minutes. Remove to a plate. Add garlic to wok and stir fry, tossing constantly, until aromatic, about 30 seconds. Add tomato puree, soy sauce, wine, sugar, and chicken broth. Reduce heat to medium. Cook, stirring, 1 minute. Return shrimp to wok. Toss to mix well. Remove from heat, stir in scallions, season to taste with salt and pepper, and serve.