Soak 4-inch wooden skewers in cold water for 1 hour. Thread 1 prawn onto each skewer so that the prawns lie flat.
Whisk together the soy, garlic, ginger, sesame oil, white wine vinegar, lime juice and peanut oil together in a small bowl. Place prawn skewers onto a plate and drizzle with peanut oil to lightly coat. Season with salt and pepper.
Heat grill. Grill shrimp 2 minutes per side or until just cooked through. Place shrimp on a platter, drizzle with vinaigrette and sprinkle with sesame seeds.