Mix crabmeat, cream cheese, steak sauce, and garlic powder together in a medium bowl. Place 1 1/2 teaspoons of crab mixture in the center of each wonton wrapper. Moisten the edges of the wrapper with water; fold in half diagonally and press edges to seal. Repeat with remaining filling and wonton wrappers. Heat 1/4-inch oil in a large skillet over medium-high heat. When oil is hot (around 350 degrees F), carefully add the wontons, in batches as necessary, and fry until lightly browned, about 1 to 2 minutes on each side. Remove to a paper towel-lined platter to drain before serving.