$drop_db = "DROP DATABASE IF EXISTS {$_DVWA[ 'db_database' ]};";
if( !@mysqli_query($GLOBALS["___mysqli_ston"],  $drop_db ) ) {
	dvwaMessagePush( "Could not drop existing database<br />SQL: " . ((is_object($GLOBALS["___mysqli_ston"])) ? mysqli_error($GLOBALS["___mysqli_ston"]) : (($___mysqli_res = mysqli_connect_error()) ? $___mysqli_res : false)) );
	dvwaPageReload();
}
$create_db = "CREATE DATABASE {$_DVWA[ 'db_database' ]};";
if( !@mysqli_query($GLOBALS["___mysqli_ston"],  $create_db ) ) {
	dvwaMessagePush( "Could not create database<br />SQL: " . ((is_object($GLOBALS["___mysqli_ston"])) ? mysqli_error($GLOBALS["___mysqli_ston"]) : (($___mysqli_res = mysqli_connect_error()) ? $___mysqli_res : false)) );
	dvwaPageReload();
}
dvwaMessagePush( "Database has been created." );

$base_dir= str_replace ("setup.php", "", $_SERVER['SCRIPT_NAME']);
$avatarUrl  = $base_dir . 'hackable/users/';
$insert = "INSERT INTO users VALUES
	('1','admin','admin','admin',MD5('password'),'{$avatarUrl}admin.jpg', NOW(), '0'),
	('2','Gordon','Brown','gordonb',MD5('abc123'),'{$avatarUrl}gordonb.jpg', NOW(), '0'),
	('3','Hack','Me','1337',MD5('charley'),'{$avatarUrl}1337.jpg', NOW(), '0'),
	('4','Pablo','Picasso','pablo',MD5('letmein'),'{$avatarUrl}pablo.jpg', NOW(), '0'),
	('5','Bob','Smith','smithy',MD5('password'),'{$avatarUrl}smithy.jpg', NOW(), '0');";
if( !mysqli_query($GLOBALS["___mysqli_ston"],  $insert ) ) {
	dvwaMessagePush( "Data could not be inserted into 'users' table<br />SQL: " . ((is_object($GLOBALS["___mysqli_ston"])) ? mysqli_error($GLOBALS["___mysqli_ston"]) : (($___mysqli_res = mysqli_connect_error()) ? $___mysqli_res : false)) );
	dvwaPageReload();
}
dvwaMessagePush( "Data inserted into 'users' table." );

<?php
if( isset( $_GET[ 'Login' ] ) ) {
	// Check Anti-CSRF token
	checkToken( $_REQUEST[ 'user_token' ], $_SESSION[ 'session_token' ], 'index.php' );

	// Sanitise username input
	$user = $_GET[ 'username' ];
	$user = stripslashes( $user );
	$user = ((isset($GLOBALS["___mysqli_ston"]) && is_object($GLOBALS["___mysqli_ston"])) ? mysqli_real_escape_string($GLOBALS["___mysqli_ston"],  $user ) : ((trigger_error("[MySQLConverterToo] Fix the mysql_escape_string() call! This code does not work.", E_USER_ERROR)) ? "" : ""));

	// Sanitise password input
	$pass = $_GET[ 'password' ];
	$pass = stripslashes( $pass );
	$pass = ((isset($GLOBALS["___mysqli_ston"]) && is_object($GLOBALS["___mysqli_ston"])) ? mysqli_real_escape_string($GLOBALS["___mysqli_ston"],  $pass ) : ((trigger_error("[MySQLConverterToo] Fix the mysql_escape_string() call! This code does not work.", E_USER_ERROR)) ? "" : ""));
	$pass = md5( $pass );

	// Check database
	$query  = "SELECT * FROM `users` WHERE user = '$user' AND password = '$pass';";
	$result = mysqli_query($GLOBALS["___mysqli_ston"],  $query ) or die( '<pre>' . ((is_object($GLOBALS["___mysqli_ston"])) ? mysqli_error($GLOBALS["___mysqli_ston"]) : (($___mysqli_res = mysqli_connect_error()) ? $___mysqli_res : false)) . '</pre>' );

	if( $result && mysqli_num_rows( $result ) == 1 ) {
		// Get users details
		$row    = mysqli_fetch_assoc( $result );
		$avatar = $row["avatar"];

		// Login successful
		$html .= "<p>Welcome to the password protected area {$user}</p>";
		$html .= "<img src=\"{$avatar}\" />";
	}
	else {
		// Login failed
		sleep( rand( 0, 3 ) );
		$html .= "<pre><br />Username and/or password incorrect.</pre>";
	}

	((is_null($___mysqli_res = mysqli_close($GLOBALS["___mysqli_ston"]))) ? false : $___mysqli_res);
}

<?php
if( isset( $_POST[ 'Login' ] ) && isset ($_POST['username']) && isset ($_POST['password']) ) {
	// Check Anti-CSRF token
	checkToken( $_REQUEST[ 'user_token' ], $_SESSION[ 'session_token' ], 'index.php' );

	// Sanitise username input
	$user = $_POST[ 'username' ];
	$user = stripslashes( $user );
	$user = ((isset($GLOBALS["___mysqli_ston"]) && is_object($GLOBALS["___mysqli_ston"])) ? mysqli_real_escape_string($GLOBALS["___mysqli_ston"],  $user ) : ((trigger_error("[MySQLConverterToo] Fix the mysql_escape_string() call! This code does not work.", E_USER_ERROR)) ? "" : ""));

	// Sanitise password input
	$pass = $_POST[ 'password' ];
	$pass = stripslashes( $pass );
	$pass = ((isset($GLOBALS["___mysqli_ston"]) && is_object($GLOBALS["___mysqli_ston"])) ? mysqli_real_escape_string($GLOBALS["___mysqli_ston"],  $pass ) : ((trigger_error("[MySQLConverterToo] Fix the mysql_escape_string() call! This code does not work.", E_USER_ERROR)) ? "" : ""));
	$pass = md5( $pass );

	// Default values
	$total_failed_login = 3;
	$lockout_time       = 15;
	$account_locked     = false;

	// Check the database (Check user information)
	$data = $db->prepare( 'SELECT failed_login, last_login FROM users WHERE user = (:user) LIMIT 1;' );
	$data->bindParam( ':user', $user, PDO::PARAM_STR );
	$data->execute();
	$row = $data->fetch();

	// Check to see if the user has been locked out.
	if( ( $data->rowCount() == 1 ) && ( $row[ 'failed_login' ] >= $total_failed_login ) )  {
		// User locked out.  Note, using this method would allow for user enumeration!
		//$html .= "<pre><br />This account has been locked due to too many incorrect logins.</pre>";

		// Calculate when the user would be allowed to login again
		$last_login = strtotime( $row[ 'last_login' ] );
		$timeout    = $last_login + ($lockout_time * 60);
		$timenow    = time();

		/*
		print "The last login was: " . date ("h:i:s", $last_login) . "<br />";
		print "The timenow is: " . date ("h:i:s", $timenow) . "<br />";
		print "The timeout is: " . date ("h:i:s", $timeout) . "<br />";
		*/

		// Check to see if enough time has passed, if it hasn't locked the account
		if( $timenow < $timeout ) {
			$account_locked = true;
			// print "The account is locked<br />";
		}
	}

	// Check the database (if username matches the password)
	$data = $db->prepare( 'SELECT * FROM users WHERE user = (:user) AND password = (:password) LIMIT 1;' );
	$data->bindParam( ':user', $user, PDO::PARAM_STR);
	$data->bindParam( ':password', $pass, PDO::PARAM_STR );
	$data->execute();
	$row = $data->fetch();

	// If its a valid login...
	if( ( $data->rowCount() == 1 ) && ( $account_locked == false ) ) {
		// Get users details
		$avatar       = $row[ 'avatar' ];
		$failed_login = $row[ 'failed_login' ];
		$last_login   = $row[ 'last_login' ];

		// Login successful
		$html .= "<p>Welcome to the password protected area <em>{$user}</em></p>";
		$html .= "<img src=\"{$avatar}\" />";

		// Had the account been locked out since last login?
		if( $failed_login >= $total_failed_login ) {
			$html .= "<p><em>Warning</em>: Someone might of been brute forcing your account.</p>";
			$html .= "<p>Number of login attempts: <em>{$failed_login}</em>.<br />Last login attempt was at: <em>${last_login}</em>.</p>";
		}

		// Reset bad login count
		$data = $db->prepare( 'UPDATE users SET failed_login = "0" WHERE user = (:user) LIMIT 1;' );
		$data->bindParam( ':user', $user, PDO::PARAM_STR );
		$data->execute();
	} else {
		// Login failed
		sleep( rand( 2, 4 ) );

		// Give the user some feedback
		$html .= "<pre><br />Username and/or password incorrect.<br /><br/>Alternative, the account has been locked because of too many failed logins.<br />If this is the case, <em>please try again in {$lockout_time} minutes</em>.</pre>";

		// Update bad login count
		$data = $db->prepare( 'UPDATE users SET failed_login = (failed_login + 1) WHERE user = (:user) LIMIT 1;' );
		$data->bindParam( ':user', $user, PDO::PARAM_STR );
		$data->execute();
	}

	// Set the last login time
	$data = $db->prepare( 'UPDATE users SET last_login = now() WHERE user = (:user) LIMIT 1;' );
	$data->bindParam( ':user', $user, PDO::PARAM_STR );
	$data->execute();
}

<?php
if( isset( $_GET[ 'Login' ] ) ) {
	// Get username
	$user = $_GET[ 'username' ];

	// Get password
	$pass = $_GET[ 'password' ];
	$pass = md5( $pass );

	// Check the database
	$query  = "SELECT * FROM `users` WHERE user = '$user' AND password = '$pass';";
	$result = mysqli_query($GLOBALS["___mysqli_ston"],  $query ) or die( '<pre>' . ((is_object($GLOBALS["___mysqli_ston"])) ? mysqli_error($GLOBALS["___mysqli_ston"]) : (($___mysqli_res = mysqli_connect_error()) ? $___mysqli_res : false)) . '</pre>' );

	if( $result && mysqli_num_rows( $result ) == 1 ) {
		// Get users details
		$row    = mysqli_fetch_assoc( $result );
		$avatar = $row["avatar"];

		// Login successful
		$html .= "<p>Welcome to the password protected area {$user}</p>";
		$html .= "<img src=\"{$avatar}\" />";
	}
	else {
		// Login failed
		$html .= "<pre><br />Username and/or password incorrect.</pre>";
	}

	((is_null($___mysqli_res = mysqli_close($GLOBALS["___mysqli_ston"]))) ? false : $___mysqli_res);
}

<?php
if( isset( $_GET[ 'Login' ] ) ) {
	// Sanitise username input
	$user = $_GET[ 'username' ];
	$user = ((isset($GLOBALS["___mysqli_ston"]) && is_object($GLOBALS["___mysqli_ston"])) ? mysqli_real_escape_string($GLOBALS["___mysqli_ston"],  $user ) : ((trigger_error("[MySQLConverterToo] Fix the mysql_escape_string() call! This code does not work.", E_USER_ERROR)) ? "" : ""));

	// Sanitise password input
	$pass = $_GET[ 'password' ];
	$pass = ((isset($GLOBALS["___mysqli_ston"]) && is_object($GLOBALS["___mysqli_ston"])) ? mysqli_real_escape_string($GLOBALS["___mysqli_ston"],  $pass ) : ((trigger_error("[MySQLConverterToo] Fix the mysql_escape_string() call! This code does not work.", E_USER_ERROR)) ? "" : ""));
	$pass = md5( $pass );

	// Check the database
	$query  = "SELECT * FROM `users` WHERE user = '$user' AND password = '$pass';";
	$result = mysqli_query($GLOBALS["___mysqli_ston"],  $query ) or die( '<pre>' . ((is_object($GLOBALS["___mysqli_ston"])) ? mysqli_error($GLOBALS["___mysqli_ston"]) : (($___mysqli_res = mysqli_connect_error()) ? $___mysqli_res : false)) . '</pre>' );

	if( $result && mysqli_num_rows( $result ) == 1 ) {
		// Get users details
		$row    = mysqli_fetch_assoc( $result );
		$avatar = $row["avatar"];

		// Login successful
		$html .= "<p>Welcome to the password protected area {$user}</p>";
		$html .= "<img src=\"{$avatar}\" />";
	}
	else {
		// Login failed
		sleep( 2 );
		$html .= "<pre><br />Username and/or password incorrect.</pre>";
	}

	((is_null($___mysqli_res = mysqli_close($GLOBALS["___mysqli_ston"]))) ? false : $___mysqli_res);
}

<?php
if( isset( $_POST[ 'Change' ] ) ) {
	// Check Anti-CSRF token
	checkToken( $_REQUEST[ 'user_token' ], $_SESSION[ 'session_token' ], 'index.php' );

	// Hide the CAPTCHA form
	$hide_form = true;

	// Get input
	$pass_new  = $_POST[ 'password_new' ];
	$pass_new  = stripslashes( $pass_new );
	$pass_new  = ((isset($GLOBALS["___mysqli_ston"]) && is_object($GLOBALS["___mysqli_ston"])) ? mysqli_real_escape_string($GLOBALS["___mysqli_ston"],  $pass_new ) : ((trigger_error("[MySQLConverterToo] Fix the mysql_escape_string() call! This code does not work.", E_USER_ERROR)) ? "" : ""));
	$pass_new  = md5( $pass_new );

	$pass_conf = $_POST[ 'password_conf' ];
	$pass_conf = stripslashes( $pass_conf );
	$pass_conf = ((isset($GLOBALS["___mysqli_ston"]) && is_object($GLOBALS["___mysqli_ston"])) ? mysqli_real_escape_string($GLOBALS["___mysqli_ston"],  $pass_conf ) : ((trigger_error("[MySQLConverterToo] Fix the mysql_escape_string() call! This code does not work.", E_USER_ERROR)) ? "" : ""));
	$pass_conf = md5( $pass_conf );

	$pass_curr = $_POST[ 'password_current' ];
	$pass_curr = stripslashes( $pass_curr );
	$pass_curr = ((isset($GLOBALS["___mysqli_ston"]) && is_object($GLOBALS["___mysqli_ston"])) ? mysqli_real_escape_string($GLOBALS["___mysqli_ston"],  $pass_curr ) : ((trigger_error("[MySQLConverterToo] Fix the mysql_escape_string() call! This code does not work.", E_USER_ERROR)) ? "" : ""));
	$pass_curr = md5( $pass_curr );

	// Check CAPTCHA from 3rd party
	$resp = recaptcha_check_answer(
		$_DVWA[ 'recaptcha_private_key' ],
		$_POST['g-recaptcha-response']
	);

	// Did the CAPTCHA fail?
	if( !$resp ) {
		// What happens when the CAPTCHA was entered incorrectly
		$html .= "<pre><br />The CAPTCHA was incorrect. Please try again.</pre>";
		$hide_form = false;
	}
	else {
		// Check that the current password is correct
		$data = $db->prepare( 'SELECT password FROM users WHERE user = (:user) AND password = (:password) LIMIT 1;' );
		$data->bindParam( ':user', dvwaCurrentUser(), PDO::PARAM_STR );
		$data->bindParam( ':password', $pass_curr, PDO::PARAM_STR );
		$data->execute();

		// Do both new password match and was the current password correct?
		if( ( $pass_new == $pass_conf) && ( $data->rowCount() == 1 ) ) {
			// Update the database
			$data = $db->prepare( 'UPDATE users SET password = (:password) WHERE user = (:user);' );
			$data->bindParam( ':password', $pass_new, PDO::PARAM_STR );
			$data->bindParam( ':user', dvwaCurrentUser(), PDO::PARAM_STR );
			$data->execute();

			// Feedback for the end user - success!
			$html .= "<pre>Password Changed.</pre>";
		}
		else {
			// Feedback for the end user - failed!
			$html .= "<pre>Either your current password is incorrect or the new passwords did not match.<br />Please try again.</pre>";
			$hide_form = false;
		}
	}
}

<?php
if( isset( $_GET[ 'Change' ] ) ) {
	// Get input
	$pass_new  = $_GET[ 'password_new' ];
	$pass_conf = $_GET[ 'password_conf' ];

	// Do the passwords match?
	if( $pass_new == $pass_conf ) {
		// They do!
		$pass_new = ((isset($GLOBALS["___mysqli_ston"]) && is_object($GLOBALS["___mysqli_ston"])) ? mysqli_real_escape_string($GLOBALS["___mysqli_ston"],  $pass_new ) : ((trigger_error("[MySQLConverterToo] Fix the mysql_escape_string() call! This code does not work.", E_USER_ERROR)) ? "" : ""));
		$pass_new = md5( $pass_new );

		// Update the database
		$insert = "UPDATE `users` SET password = '$pass_new' WHERE user = '" . dvwaCurrentUser() . "';";
		$result = mysqli_query($GLOBALS["___mysqli_ston"],  $insert ) or die( '<pre>' . ((is_object($GLOBALS["___mysqli_ston"])) ? mysqli_error($GLOBALS["___mysqli_ston"]) : (($___mysqli_res = mysqli_connect_error()) ? $___mysqli_res : false)) . '</pre>' );

		// Feedback for the user
		$html .= "<pre>Password Changed.</pre>";
	}
	else {
		// Issue with passwords matching
		$html .= "<pre>Passwords did not match.</pre>";
	}

	((is_null($___mysqli_res = mysqli_close($GLOBALS["___mysqli_ston"]))) ? false : $___mysqli_res);
}

<?php
if( isset( $_GET[ 'Change' ] ) ) {
	// Checks to see where the request came from
	if( stripos( $_SERVER[ 'HTTP_REFERER' ] ,$_SERVER[ 'SERVER_NAME' ]) !== false ) {
		// Get input
		$pass_new  = $_GET[ 'password_new' ];
		$pass_conf = $_GET[ 'password_conf' ];

		// Do the passwords match?
		if( $pass_new == $pass_conf ) {
			// They do!
			$pass_new = ((isset($GLOBALS["___mysqli_ston"]) && is_object($GLOBALS["___mysqli_ston"])) ? mysqli_real_escape_string($GLOBALS["___mysqli_ston"],  $pass_new ) : ((trigger_error("[MySQLConverterToo] Fix the mysql_escape_string() call! This code does not work.", E_USER_ERROR)) ? "" : ""));
			$pass_new = md5( $pass_new );

			// Update the database
			$insert = "UPDATE `users` SET password = '$pass_new' WHERE user = '" . dvwaCurrentUser() . "';";
			$result = mysqli_query($GLOBALS["___mysqli_ston"],  $insert ) or die( '<pre>' . ((is_object($GLOBALS["___mysqli_ston"])) ? mysqli_error($GLOBALS["___mysqli_ston"]) : (($___mysqli_res = mysqli_connect_error()) ? $___mysqli_res : false)) . '</pre>' );

			// Feedback for the user
			$html .= "<pre>Password Changed.</pre>";
		}
		else {
			// Issue with passwords matching
			$html .= "<pre>Passwords did not match.</pre>";
		}
	}
	else {
		// Didn't come from a trusted source
		$html .= "<pre>That request didn't look correct.</pre>";
	}

	((is_null($___mysqli_res = mysqli_close($GLOBALS["___mysqli_ston"]))) ? false : $___mysqli_res);
}

<?php
if( isset( $_POST[ 'Submit' ]  ) ) {
	// Get input
	$target = trim($_REQUEST[ 'ip' ]);

	// Set blacklist
	$substitutions = array(
		'&'  => '',
		';'  => '',
		'| ' => '',
		'-'  => '',
		'$'  => '',
		'('  => '',
		')'  => '',
		'`'  => '',
		'||' => '',
	);

	// Remove any of the characters in the array (blacklist).
	$target = str_replace( array_keys( $substitutions ), $substitutions, $target );

	// Determine OS and execute the ping command.
	if( stristr( php_uname( 's' ), 'Windows NT' ) ) {
		// Windows
		$cmd = shell_exec( 'ping  ' . $target );
	}
	else {
		// *nix
		$cmd = shell_exec( 'ping  -c 4 ' . $target );
	}

	// Feedback for the end user
	$html .= "<pre>{$cmd}</pre>";
}

<?php
if( isset( $_POST[ 'Submit' ]  ) ) {
	// Check Anti-CSRF token
	checkToken( $_REQUEST[ 'user_token' ], $_SESSION[ 'session_token' ], 'index.php' );

	// Get input
	$target = $_REQUEST[ 'ip' ];
	$target = stripslashes( $target );

	// Split the IP into 4 octects
	$octet = explode( ".", $target );

	// Check IF each octet is an integer
	if( ( is_numeric( $octet[0] ) ) && ( is_numeric( $octet[1] ) ) && ( is_numeric( $octet[2] ) ) && ( is_numeric( $octet[3] ) ) && ( sizeof( $octet ) == 4 ) ) {
		// If all 4 octets are int's put the IP back together.
		$target = $octet[0] . '.' . $octet[1] . '.' . $octet[2] . '.' . $octet[3];

		// Determine OS and execute the ping command.
		if( stristr( php_uname( 's' ), 'Windows NT' ) ) {
			// Windows
			$cmd = shell_exec( 'ping  ' . $target );
		}
		else {
			// *nix
			$cmd = shell_exec( 'ping  -c 4 ' . $target );
		}

		// Feedback for the end user
		$html .= "<pre>{$cmd}</pre>";
	}
	else {
		// Ops. Let the user name theres a mistake
		$html .= '<pre>ERROR: You have entered an invalid IP.</pre>';
	}
}

<?php
if( isset( $_POST[ 'Submit' ]  ) ) {
	// Get input
	$target = $_REQUEST[ 'ip' ];

	// Set blacklist
	$substitutions = array(
		'&&' => '',
		';'  => '',
	);

	// Remove any of the charactars in the array (blacklist).
	$target = str_replace( array_keys( $substitutions ), $substitutions, $target );

	// Determine OS and execute the ping command.
	if( stristr( php_uname( 's' ), 'Windows NT' ) ) {
		// Windows
		$cmd = shell_exec( 'ping  ' . $target );
	}
	else {
		// *nix
		$cmd = shell_exec( 'ping  -c 4 ' . $target );
	}

	// Feedback for the end user
	$html .= "<pre>{$cmd}</pre>";
}

<?php
$page[ 'body' ] .= <<<EOF
<script>

/*
MD5 code from here
https://github.com/blueimp/JavaScript-MD5
*/

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	function rot13(inp) {
		return inp.replace(/[a-zA-Z]/g,function(c){return String.fromCharCode((c<="Z"?90:122)>=(c=c.charCodeAt(0)+13)?c:c-26);});
	}

	function generate_token() {
		var phrase = document.getElementById("phrase").value;
		document.getElementById("token").value = md5(rot13(phrase));
	}

	generate_token();
</script>
EOF;

$page[ 'body' ] .= "
<div class=\"body_padded\">
	<h1>Vulnerability: Open HTTP Redirect</h1>

	<div class=\"vulnerable_code_area\">
		<h2>Hacker History</h2>
		<p>
			Here are two links to some famous hacker quotes, see if you can hack them.
		</p>
		<ul>
			<li><a href='{$link1}'>Quote 1</a></li>
			<li><a href='{$link2}'>Quote 2</a></li>
		</ul>
		{$html}
	</div>

	<h2>More Information</h2>
	<ul>
		<li>" . dvwaExternalLinkUrlGet( 'https://cheatsheetseries.owasp.org/cheatsheets/Unvalidated_Redirects_and_Forwards_Cheat_Sheet.html', "OWASP Unvalidated Redirects and Forwards Cheat Sheet" ) . "</li>
		<li>" . dvwaExternalLinkUrlGet( 'https://owasp.org/www-project-web-security-testing-guide/stable/4-Web_Application_Security_Testing/11-Client-side_Testing/04-Testing_for_Client-side_URL_Redirect', "WSTG - Testing for Client-side URL Redirect") . "</li>
		<li>" . dvwaExternalLinkUrlGet( 'https://cwe.mitre.org/data/definitions/601.html', "Mitre - CWE-601: URL Redirection to Untrusted Site ('Open Redirect')" ) . "</li>
	</ul>
</div>\n";