How do I install the Msi Wrapper skill?

Run npx skillmds@latest add abelrguezr/msi-wrapper in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Msi Wrapper safe to use?

This skill has not completed SkillMD's automated safety review yet. Capability flags: makes network calls. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Msi Wrapper?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Msi Wrapper free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Msi Wrapper?

abelrguezr (@abelrguezr) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Msi Wrapper by abelrguezr — Agent Skill

Name: Msi Wrapper
Rating: 4.2 (5 reviews)
Author: abelrguezr

Msi Wrapper

Create MSI installer wrappers for Windows privilege escalation and persistence. Use this skill when you need to wrap executables or batch files in MSI installers for authorized penetration testing, security assessments, or red team operations on Windows systems. Trigger this skill for any request involving MSI packaging, ExeMSI configuration, or Windows installer-based privilege escalation techniques.

abelrguezr Updated Sep 10, 2026

File contents

MSI Wrapper Skill

Overview

This skill helps you create MSI installer wrappers using ExeMSI, a tool that wraps executables in legitimate-looking MSI installers. This technique is valuable for:

Bypassing application whitelisting controls
Achieving persistence on Windows systems
Privilege escalation scenarios
Lateral movement operations

Prerequisites

Windows system with administrative access
ExeMSI tool downloaded from https://www.exemsi.com/download/
Target binary or batch file to wrap

Quick Start

Download ExeMSI from the official website
Execute the application on your Windows system
Select your target binary or batch file to wrap
Configure wrapper settings (see Configuration Guide below)
Build the MSI installer by clicking through the wizard

Configuration Guide

Key Settings

When configuring ExeMSI, focus on these critical configuration areas:

Executable Selection

Choose the binary you want to wrap
For command-line execution only, you can select a .bat file instead of cmd.exe
This allows you to execute specific commands without spawning a full command shell

Command Line Parameters

Configure what commands should execute when the MSI runs
Set appropriate parameters for your use case
Test parameters in a controlled environment first

Installation Behavior

Configure how the wrapper behaves during installation
Set execution timing (immediate vs. deferred)
Configure any persistence mechanisms needed

For Batch Files

If you only need to execute command lines:

Create your .bat file with the desired commands
In ExeMSI, select the .bat file instead of cmd.exe
Configure the command execution settings
Build the MSI installer

Usage Notes

Customization: When packing your own binaries, you can modify configuration values to suit your needs
Testing: Always test in a controlled environment before deployment
Stealth: The wrapper can be customized to appear as legitimate software
Flexibility: Works with various executable types and batch scripts

Security Considerations

⚠️ Important: This technique should only be used:

In authorized penetration testing engagements
On systems you own or have explicit written permission to test
For educational and defensive security purposes
In compliance with applicable laws and regulations

Workflow Example

1. Identify target binary → 2. Download ExeMSI → 3. Configure wrapper
4. Build MSI → 5. Test in lab → 6. Deploy (if authorized)

Troubleshooting

Build fails: Verify you have administrative privileges
Execution issues: Check that the wrapped binary path is correct
Antivirus detection: Test in isolated environment; consider additional obfuscation techniques

References

ExeMSI Documentation: https://www.exemsi.com/documentation/getting-started/
HackTricks Windows Privilege Escalation Guide
Windows MSI Installation Internals

---name: msi-wrapperdescription: Create MSI installer wrappers for Windows privilege escalation and persistence. Use this skill when you need to wrap executables or batch files in MSI installers for authorized penetration testing, security assessments, or red team operations on Windows systems. Trigger this skill for any request involving MSI packaging, ExeMSI configuration, or Windows installer-based privilege escalation techniques.---# MSI Wrapper Skill## OverviewThis skill helps you create MSI installer wrappers using ExeMSI, a tool that wraps executables in legitimate-looking MSI installers. This technique is valuable for:- Bypassing application whitelisting controls- Achieving persistence on Windows systems- Privilege escalation scenarios- Lateral movement operations## Prerequisites- Windows system with administrative access- ExeMSI tool downloaded from https://www.exemsi.com/download/- Target binary or batch file to wrap## Quick Start1. **Download ExeMSI** from the official website2. **Execute the application** on your Windows system3. **Select your target** binary or batch file to wrap4. **Configure wrapper settings** (see Configuration Guide below)5. **Build the MSI installer** by clicking through the wizard## Configuration Guide### Key SettingsWhen configuring ExeMSI, focus on these critical configuration areas:#### Executable Selection- Choose the binary you want to wrap- For command-line execution only, you can select a `.bat` file instead of `cmd.exe`- This allows you to execute specific commands without spawning a full command shell#### Command Line Parameters- Configure what commands should execute when the MSI runs- Set appropriate parameters for your use case- Test parameters in a controlled environment first#### Installation Behavior- Configure how the wrapper behaves during installation- Set execution timing (immediate vs. deferred)- Configure any persistence mechanisms needed### For Batch FilesIf you only need to execute command lines:1. Create your `.bat` file with the desired commands2. In ExeMSI, select the `.bat` file instead of `cmd.exe`3. Configure the command execution settings4. Build the MSI installer## Usage Notes- **Customization**: When packing your own binaries, you can modify configuration values to suit your needs- **Testing**: Always test in a controlled environment before deployment- **Stealth**: The wrapper can be customized to appear as legitimate software- **Flexibility**: Works with various executable types and batch scripts## Security Considerations⚠️ **Important**: This technique should only be used:- In authorized penetration testing engagements- On systems you own or have explicit written permission to test- For educational and defensive security purposes- In compliance with applicable laws and regulations## Workflow Example```1. Identify target binary → 2. Download ExeMSI → 3. Configure wrapper4. Build MSI → 5. Test in lab → 6. Deploy (if authorized)```## Troubleshooting- **Build fails**: Verify you have administrative privileges- **Execution issues**: Check that the wrapped binary path is correct- **Antivirus detection**: Test in isolated environment; consider additional obfuscation techniques## References- ExeMSI Documentation: https://www.exemsi.com/documentation/getting-started/- HackTricks Windows Privilege Escalation Guide- Windows MSI Installation Internals

Frequently asked questions