Pablo Guides

# Course #570: Introduction to smbmap$ for Effective Network Penetration Testing

## Section 1: Installation and Configuration on Kali Linux

### 1.1 Overview of smbmap$

`smbmap$` is a powerful tool designed for penetration testing and security auditing of SMB (Server Message Block) shares on networks. It allows users to enumerate shares, check for write access, and identify vulnerable SMB configurations. In this section, we will cover its installation and basic configuration on Kali Linux, enabling you to utilize this tool effectively in network penetration testing.

### 1.2 Prerequisites

Before we begin, ensure you have the following prerequisites:
– A working installation of Kali Linux (up to date).
– Basic knowledge of the command line interface (CLI).

### 1.3 Installation

To install `smbmap$`, follow these steps:

1. **Open Terminal** on your Kali Linux machine.

2. **Install Dependencies**: `smbmap$` requires Python 3 and some additional libraries. Install these by running the following commands:

   sudo apt update

   sudo apt install python3 python3-pip

   sudo apt install git

 

3. **Clone the Repository**: Download `smbmap$` from its GitHub repository:

   git clone https://github.com/ShawnDEvans/smbmap.git

 

4. **Navigate to the smbmap Directory**:

   cd smbmap

 

5. **Install Required Python Packages**: Use `pip` to install the required Python dependencies:

   pip3 install -r requirements.txt

 

6. **Verify Installation**: You can check if `smbmap$` is installed successfully by running:

   python3 smbmap.py –help

 

If you see the help information and options, the installation is successful.

### 1.4 Configuration

`smbmap$` does not require extensive configuration, but it’s a good practice to familiarize yourself with its options. The typical usage syntax is:

"`bash
python3 smbmap.py -H -u -p "`

Here, replace ``, ``, and `` with the target IP address and relevant user credentials. You can also use the `-d` option to specify a domain.

—

## Step-by-Step Usage and Real-World Use Cases

### 2.1 Basic Usage

Once you’ve installed and configured `smbmap$`, you can start using it to enumerate SMB shares. Here are some common commands and their explanations.

#### Command 1: Basic Enumeration

To enumerate shares on a target machine, use:

"`bash
python3 smbmap.py -H
"`

This command will list all the shares available on the target SMB server.

#### Example Output

"`plaintext
[+] IP: 192.168.1.10 Name: TARGET-SERVER NetBIOS Name: TARGET-SERVER
Disk Permissions
—- ————
share1 READ, WRITE
share2 READ
share3 NO ACCESS
"`

### 2.2 User Credentials

If you have valid credentials, you can specify them to enumerate shares with access permissions.

"`bash
python3 smbmap.py -H -u -p "`

#### Example Use Case: Testing MySQL Backup Access

Imagine you're testing an environment where MySQL backups are stored on an SMB share. You can check if there are any writable shares:

"`bash
python3 smbmap.py -H 192.168.1.10 -u backup_user -p password123
"`

If the output shows a writable share, you might be able to upload a malicious backup or access sensitive data.

### 2.3 Advanced Options

`smbmap$` provides several options for advanced usage.

#### Command 2: Recursive Enumeration

To recursively enumerate the contents of a share, use the `-R` flag:

"`bash
python3 smbmap.py -H -u -p -R
"`

This will display the full directory structure along with file permissions.

#### Command 3: File Uploads and Downloads

You can also upload or download files using `smbmap$`:

– **Upload a file** to a share:

    python3 smbmap.py -H  -u  -p  -u  -d 

  

– **Download a file** from a share:

    python3 smbmap.py -H  -u  -p  -g  -d 

  

### 2.4 Case Study: Penetration Testing Scenario

#### Scenario: Accessing a Misconfigured SMB Share

1. **Target Identification**: You discover a target IP `192.168.1.100` with an open SMB port (445).
2. **Initial Enumeration**:

   python3 smbmap.py -H 192.168.1.100

 

3. **Find Shares**: The output shows a share named `insecure_share` with READ and WRITE permissions.
4. **Upload a Payload**: You prepare a payload to gain a reverse shell.

   python3 smbmap.py -H 192.168.1.100 -u guest -p " -u /path/to/payload.exe -d insecure_share

 

5. **Execute the Payload**: Depending on your access, you could either execute the payload through the network or wait for it to be opened by an unsuspecting user.

### 2.5 Additional Use Cases

– **Backup Analysis**: Assessing whether sensitive backups are accessible.
– **Misconfigured Shares**: Finding shares that should not be publicly writable.
– **Data Exfiltration**: Using `smbmap$` to find and exfiltrate sensitive data from poorly secured SMB shares.

### 2.6 Conclusion of Usage Section

This section covered the installation, basic usage, and real-world application scenarios for `smbmap$`. As you become familiar with these commands and concepts, you will enhance your skills in conducting effective network penetration tests.

### External Reference Links

– [smbmap GitHub Repository](https://github.com/ShawnDEvans/smbmap)
– [Kali Linux Official Website](https://www.kali.org/)
– [Understanding SMB Protocols](https://docs.microsoft.com/en-us/windows/win32/api/_smb/)

Remember, ethical hacking should always be conducted with permission and within the bounds of the law.

—

Made by pablo rotem / פבלו רותם