OpenFUT-Bridge/docs/setup-notes.md

Proxy Setup Notes

Research notes for routing FIFA 23 traffic through OpenFUT Bridge.

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Goal

Intercept all FUT API calls from FIFA 23 so the Bridge can:

1. Log every request for reverse engineering
2. Route known endpoints to OpenFUT Core
3. Return placeholder responses for the rest

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PC (FIFA 23 via EA App / Steam)

Option A: Windows hosts file

Redirect utas.fut.ea.com and related domains to localhost.

# C:\Windows\System32\drivers\etc\hosts
127.0.0.1   utas.fut.ea.com
127.0.0.1   utas2.fut.ea.com
127.0.0.1   ea.com

The Bridge must listen on port 443 (HTTPS) or 80 (HTTP). FIFA 23 expects HTTPS — you'll need a self-signed cert and need to trust it.

Option B: mitmproxy

1. Install mitmproxy
2. Set Windows system proxy to 127.0.0.1:8080
3. Configure mitmproxy to forward FUT traffic to Bridge

mitmproxy --mode transparent \
  --listen-host 127.0.0.1 \
  --listen-port 8080

⚠️ FIFA 23 may use certificate pinning — this is unconfirmed. If pinning is active, the hosts file approach or a traffic-level redirect may be needed instead.

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RPCS3 (PS3 emulator)

RPCS3 has built-in network settings:

1. Open RPCS3 → Configuration → Network
2. Set DNS to point to your OpenFUT Bridge IP
3. Configure PSN Status to RPCN or custom
4. The Bridge intercepts DNS and HTTP/HTTPS traffic

Research needed: RPCS3 FIFA 23 title ID and specific network behavior.

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Certificate Handling

EA's FUT API uses HTTPS. Options:

1. Self-signed cert — generate with openssl and add to system trust store
2. HTTP downgrade — if the client accepts HTTP (unlikely for production)
3. Traffic-level redirect — use iptables/nftables to redirect port 443 traffic
4. No cert — if FIFA 23 PC doesn't verify certs (to be tested)

Generating a self-signed cert

openssl req -x509 -newkey rsa:4096 -keyout key.pem -out cert.pem -days 365 -nodes \
  -subj "/CN=utas.fut.ea.com"

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Status

🔴 Not tested yet. All of the above is research / theoretical. The first step is to capture real FIFA 23 traffic with mitmproxy and document actual endpoints.

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Next Steps

1. Set up mitmproxy on a FIFA 23 PC
2. Start FIFA 23 and navigate to FUT mode
3. Export the mitmproxy capture
4. Add real endpoints to docs/endpoint-map.md
5. Add mappings to src/mapper.rs