Cyber Security: ollama-assisted pentest
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Step-by-Step: Install Ollama on Linux (Ubuntu, Debian)
Ollama lets you run LLMs like LLaMA, Mistral, or custom models on your local machine (no internet or cloud needed).
1. Update your system
sudo apt update && sudo apt upgrade -y
2. Install Ollama
curl -fsSL https://ollama.com/install.sh | sh
This will:
- Download the latest version of Ollama
- Install it as a system service
3. Start the Ollama service
ollama run llama3
This will:
- Download the `llama3` model (or whichever you pick)
- Start the chat interface in your terminal
> You can also install other models like:
ollama run mistral ollama run codellama ollama run orca-mini
Use Cases: Ollama for Pentesting
Once installed, you can do things like:
Example: Generate Nmap scan script
Prompt: Create a bash script using nmap to scan all ports on a subnet and save the results
Example: Red team phishing template
Prompt: Write a convincing phishing email template for an internal security awareness test
Example: Payload obfuscation
Prompt: Obfuscate this PowerShell reverse shell for an AV evasion lab (educational use)
Example: Summarize a Metasploit exploit module
Prompt: Explain how this Metasploit exploit works, step-by-step (paste code here)
Advanced Use: Connect Ollama to Chat UIs
You can also use it with:
- Open WebUI (like ChatGPT in your browser)
[1](https://github.com/open-webui/open-webui)
- LM Studio (GUI-based alternative)
Easy desktop app for chatting with Ollama models
Tip: Run Code-Ready Models
Models best for pentesting use:
| Model | Use Case |
|---|---|
| `codellama` | Script writing, payloads |
| `llama3` | General reasoning + code |
| `mistral` | Fast and lightweight reasoning |
| `wizardcoder` | Complex code generation |
| `phi3` | Small, smart, fast |