mirror of
https://github.com/carlospolop/hacktricks
synced 2024-11-22 20:53:37 +00:00
48 lines
3.2 KiB
Markdown
48 lines
3.2 KiB
Markdown
|
# One Gadget
|
||
|
|
|
||
|
|
<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** 🐦 [**@hacktricks\_live**](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>
|
||
|
|
|
||
|
|
## Basic Information
|
||
|
|
|
||
|
|
[**One Gadget**](https://github.com/david942j/one\_gadget) allows to obtain a shell instead of using **system** and **"/bin/sh". One Gadget** will find inside the libc library some way to obtain a shell (`execve("/bin/sh")`) using just one **address**.\
|
||
|
|
However, normally there are some constrains, the most common ones and easy to avoid are like `[rsp+0x30] == NULL` As you control the values inside the **RSP** you just have to send some more NULL values so the constrain is avoided.
|
||
|
|
|
||
|
|
.png>)
|
||
|
|
|
||
|
|
```python
|
||
|
|
ONE_GADGET = libc.address + 0x4526a
|
||
|
|
rop2 = base + p64(ONE_GADGET) + "\x00"*100
|
||
|
|
```
|
||
|
|
|
||
|
|
To the address indicated by One Gadget you need to **add the base address where `libc`** is loaded.
|
||
|
|
|
||
|
|
{% hint style="success" %}
|
||
|
|
One Gadget is a **great help for Arbitrary Write 2 Exec techniques** and might **simplifies ROP** chains as you only need to call one address (and fulfill the requirements).
|
||
|
|
{% endhint %}
|
||
|
|
|
||
|
|
<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** 🐦 [**@hacktricks\_live**](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>
|