mhws_beta_server

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Here’s a project simulating server requests for the Monster Hunter Wilds Beta Test version.

Note

This project is intended for OBT1, and there are currently no plans to update it for OBT2. If you want to use it for the latter, please refer to WiseHorror/mhws_beta_server.

Disclaimer

This project is intended solely for educational and learning purposes and must not be used for commercial purposes. Please delete this software within 24 hours of downloading. We do not take any responsibility for any illegal usage or distribution of this software.

Notes

The cert directory contains certificate files generated for mhws.io

Known Issues

Haven't tested if it can be launched from scratch; maybe later if needed.

Usage

A simple tutorial, not very detailed. If you don't understand, you can search or ask me, but please think for yourself first.

• Start mhws_beta_server

  go run . --cert-domain hjm.rebe.capcom.com,40912.playfabapi.com --api-host hjm.rebe.capcom.com

  For more information, use --help command
• Add ./cert/root.crt as a trusted root certificate
• Add the following to your hosts file and flush the system DNS cache:

  127.0.0.1 hjm.rebe.capcom.com
  127.0.0.1 40912.playfabapi.com
  

  Note：After adding, you may not be able to connect to other Capcom games. Restore the hosts file and flush the cache to fix; if necessary, try restarting your system.

Below is the old tutorial, for reference only, validity not guaranteed.

TL;DR

What's needed

• Something to bypass Steam and launch Steam applications, e.g. steamclient, unsteam
• A tool that can capture and modify process HTTP/HTTPS traffic. e.g. mitmproxy + Proxifier, Charles

You are not required to use any specific tool; find the one that suits you best.

Here we use mitmproxy + Proxifier as an example. Other tools work on the same principle, just different implementations.

Charles is recommended as it is more stable.

Steps (not detailed)

It is recommended to follow the steps in order, though sometimes the order is not important:

• Install python3 (recommended version 3.8 or higher) and add python to your system PATH so you can run mitmproxy (make good use of search engines).

• Install go (a.k.a. golang), version 1.23.1 or higher, and add go to your system PATH to run mhw_beta_server.

  • Version 1.23.1 or higher is not strictly required; for lower versions you can modify the third line of go.mod.
  • No pre‑compiled binaries are provided here, so you'll need to compile it yourself (more on that later). Any network issues you encounter along the way can also be resolved with a search engine.

• Install Proxifier.

• Install mitmproxy. Open a new terminal (whether cmd or powershell) and run the following command:

  pip install mitmproxy

  • You may run into network issues – use a search engine to solve pip network problems.

• Configure the hosts file by adding the following line:

  your_ip    your_host
  

  • Here, your_ip is the listening address of the fake server mhws_beta_server – it can be localhost, a LAN address, or a public IP.
  • your_host is the domain name for your service. Any valid domain name works; the default used here is mhws.io. You can use a different domain, but then you'll need to sign a certificate yourself and place it in the cert directory.
  • For example, you could write:

    127.0.0.1    mhws.io
    

• Configure Proxifier:

  • Profile -> Proxy Servers -> Add... and fill in as follows, then click OK:

    Address: 127.0.0.1
    Port: 8080
    Protocol: HTTPS
    

  • Profile -> Proxification Rules
    • Change the Action of the Default rule to Direct.
    • Click Add, check Enabled, and configure as follows:

      Name: Python
      Applications: python.exe
      Action: Direct
      

      OK
    • Click Add, check Enabled, and configure as follows:

      Name: Wilds
      Application: monsterhunterwildsbeta.exe
      Action: Proxy HTTPS 127.0.0.1
      

      OK
  • Keep Proxifier running.

  Note: Make sure that in the Rules list, Python is above Wilds, and Wilds is above Localhost.

• Configure mitmproxy:

  • Install the mitmproxy certificate (searchable via a search engine).
  • In a location of your choice, write the following content into a main.py file:

    import mitmproxy.http
    
    class CapcomPatcher:
      def __init__(self):
        pass
    
      def request(self, flow: mitmproxy.http.HTTPFlow):
        flow.request.host = "your_host"
        return
    
    addons = [
      CapcomPatcher(),
    ]

    Note: In the line flow.request.host = "your_host", replace your_host with the value you used in the hosts file (default is mhws.io).
  • Open a new terminal in that location and run the following command, keeping the terminal open:

    mitmweb.exe --ssl-insecure -s ./main.py

• Start mhw_beta_server:

  • Open a terminal in the project directory and run the following command, keeping the terminal open:

    go run . your_ip

    Note: In the command above, replace your_ip with the value you used in the hosts file – it could be the loopback address, a LAN address, or a public IP.

• Bypass Steam to launch the game – there are many methods, search for them.

PS

Proxifier + mitmproxy is just the solution I personally use because it's convenient for debugging. In practice it's quite cumbersome; for everyday use I recommend Charles.

Finally, make good use of search engines! Make good use of search engines! Make good use of search engines!

Thanks

@atYuguo

@EdLovecraft

@Evilmass

@pangliang