# Kali Linux Course #686: Weevely$ Mastery
## Section 1: Introduction to Weevely$
### Overview of Weevely$
Weevely$ is a powerful web shell that is often utilized in penetration testing and cybersecurity assessments. It is designed to assist ethical hackers in gaining remote access to web applications and servers, allowing them to execute commands, upload files, and perform various tasks. This web shell is particularly useful when testing the security of web applications, especially those vulnerable to remote file inclusion (RFI) or similar exploits.
In this section, we will delve into the installation, configuration, and effective usage of Weevely$. We will provide comprehensive code examples, real-world use cases, and the necessary technical explanations to ensure a solid understanding of the tool.
### 1.1 Installation and Configuration on Kali Linux
#### Step 1: Update Your System
Before installing any new tools, it is advisable to ensure that your Kali Linux distribution is up-to-date. Open your terminal and run the following commands:
"`bash
sudo apt update
sudo apt upgrade
"`
#### Step 2: Install Weevely$
Weevely$ can be installed directly from the Kali repositories, which makes the installation process straightforward. Use the following command:
"`bash
sudo apt install weevely
"`
To verify that the installation was successful, you can check the version of Weevely$:
"`bash
weevely –version
"`
#### Step 3: Configuration
After installation, you may want to configure Weevely$ based on your specific testing needs. You can do this by editing the `weevely` configuration file located at `/etc/weevely.conf` (if it exists) or by creating your own configuration settings during your pentesting operations.
### 1.2 Step-by-Step Usage
#### Step 1: Generating a Web Shell
To get started, you must generate a web shell that you will upload to the target server. Use the command below to create a new web shell. You will need to specify a password that will be used to access the shell later:
"`bash
weevely generate
"`
Replace `
#### Step 2: Uploading the Web Shell
Next, you need to upload the `shell.php` file to the target server. This step usually involves exploiting a vulnerability in the web application to upload the shell. Common methods include:
– File upload vulnerabilities
– Remote file inclusion flaws
– Misconfigured directories allowing write access
**Example: Exploiting an Upload Vulnerability**
If the target application has a file upload feature that does not properly validate the file type, you may attempt to upload your web shell. After a successful upload, the web shell would be accessible via a URL like:
"`
http://target.com/uploads/shell.php
"`
#### Step 3: Opening a Session
Once you have successfully uploaded the web shell, you can connect to it using the following command:
"`bash
weevely http://target.com/uploads/shell.php
Replace `
### 1.3 Real-World Use Cases
Weevely$ can be applied in various scenarios during a penetration test. Here are some common use cases:
1. **Command Execution**: When a vulnerable web application allows the execution of system commands, Weevely$ can be used to run commands like `ls`, `cat`, `wget`, etc.
# List files in the current directory
weevely> ls
2. **File Management**: Upload or download files to and from the target server.
# Upload a local file to the target
weevely> upload /path/to/local/file.txt /path/to/remote/
3. **Database Interaction**: If the web application is connected to a database, you can exploit it via the web shell to gain sensitive information.
4. **Persistence**: You can create additional backdoors or web shells for later access or testing.
### 1.4 Technical Explanations
#### What Happens During Upload?
When uploading a web shell, you’re essentially placing a remote command execution script on the target server. This script is typically in PHP or a similar server-side scripting language. Once executed, the shell provides the ability to run commands as the user that the web server runs.
#### Security Considerations
While using Weevely$, it’s essential to follow ethical guidelines. Ensure that you have explicit permission to test the systems you are targeting. Unauthorized access to computer systems is illegal and unethical.
### External References
For further reading and in-depth understanding, consider the following resources:
1. [Weevely Official Documentation](https://www.kali.org/tools/weevely$)
2. [OWASP – Web Application Security Testing](https://owasp.org/www-project-web-security-testing-guide/)
3. [Pentester Academy – Web Application Penetration Testing](https://www.pentesteracademy.com/courses)
### Conclusion
In this section, we have covered the fundamentals of installing and using Weevely$ on Kali Linux. You should now be familiar with generating web shells, uploading them to vulnerable web applications, and using them effectively in penetration tests. As you progress through this course, we will explore more advanced techniques and scenarios to further enhance your knowledge and skills in using Weevely$.
nnMade by pablo rotem / פבלו רותם