Steaks: Brush the steaks with olive oil; sprinkle liberally with salt and pepper, to taste. Heat a heavy saute pan over medium-high heat. Add the steaks and cook for about 4 minutes per side for medium-rare. Remove the steaks to a cutting board and let rest for 10 minutes. Slice crosswise into thin strips. Set aside.
Bean salad: In a large bowl, combine the beans, olive oil, lime juice, garlic, scallions, cilantro, and oregano. Mix gently. Season with salt and black pepper, to taste.
Put the bean salad on a platter and arrange the warm steak slices on top.