[APP][Pro] Stromer - Connect your Stromer e-bike to Homey

[Wout_van_den_Dool]

Retrieving API Credentials (MITM Method)

To use this app, you need to retrieve your Stromer API credentials. This requires intercepting the login request from the official Stromer app. Here’s how:

Method 1: Using Charles Proxy (Mac/Windows/Linux)

Step 1: Install Charles Proxy

1. Download Charles Proxy from https://www.charlesproxy.com/
2. Install and launch Charles
3. Accept the trial or enter license key

Step 2: Configure SSL Proxying

1. In Charles, go to Proxy → SSL Proxying Settings
2. Click “Add” under SSL Proxying
3. Enter:

• Host: api3.stromer-portal.ch
• Port: 443

4. Click OK

Step 3: Install Charles Certificate on iPhone

1. In Charles, go to Help → SSL Proxying → Install Charles Root Certificate on a Mobile Device
2. Follow the instructions to configure your iPhone to use Charles proxy
3. On iPhone, go to Settings → General → About → Certificate Trust Settings
4. Enable full trust for Charles Proxy certificate

Step 4: Configure iPhone Proxy

1. On iPhone, go to Settings → Wi-Fi
2. Tap the (i) icon next to your connected network
3. Scroll to HTTP Proxy → Configure Proxy → Manual
4. Enter your Mac’s IP address (shown in Charles)
5. Port: 8888
6. Save

Step 5: Intercept Login Request

1. Open Stromer OMNI app on iPhone
2. Log out if already logged in
3. In Charles, clear the session (Ctrl+K / Cmd+K)
4. Log in with your Stromer credentials
5. In Charles, find the request to api3.stromer-portal.ch → /mobile/v4/o/token/ or /o/token/
6. Click on the request → Request tab
7. Look for the JSON body containing:

{ “grant_type”: “password”, “username”: “your@email.com”, “password”: “yourpassword”, “client_id”: “YOUR_CLIENT_ID_HERE”, “client_secret”: “YOUR_CLIENT_SECRET_HERE” // Only for v3 API }

8. Copy the client_id (and client_secret if present)

Step 6: Clean Up

1. On iPhone, go back to Wi-Fi settings → HTTP Proxy → Off
2. Remove Charles certificate from iPhone (Settings → General → VPN & Device Management)

Method 2: Using mitmproxy (Mac/Linux - Advanced Users)

Step 1: Install mitmproxy

brew install mitmproxy # Mac # OR pip install mitmproxy # Linux/Mac

Step 2: Start mitmproxy

mitmproxy --listen-port 8080

Step 3: Configure iPhone Proxy

1. Settings → Wi-Fi → (i) → HTTP Proxy → Manual
2. Server: Your computer’s IP address
3. Port: 8080

Step 4: Install Certificate

1. On iPhone, browse to http://mitm.it
2. Install the certificate for iOS
3. Settings → General → About → Certificate Trust Settings → Enable

Step 5: Capture Credentials

1. Open Stromer app on iPhone
2. Log in with credentials
3. In mitmproxy terminal, press / to search
4. Search for token
5. Press Enter to view request
6. Look for client_id and client_secret in request body