openfut-observe.sh answers the one question no server log can: when a gate fails and a service logged nothing, did the client try and fail, or never try? Both look like silence. Two redirector gates were lost to that ambiguity -- "roster server logged nothing" was equally consistent with a broken roster service, a wrong roster URL, and a client that never asked. Built on iptables packet counters because this box has no tcpdump, no conntrack, and no readable kernel log. That last one is verified rather than assumed: an initial LOG-based version installed correctly and its rules matched (counters proved it), but the output went nowhere -- journalctl -k has no entries and dmesg is empty. Counters are also lower volume and record only SYNs, so no payload can be captured even in principle. Validated against the live client, not a loopback stand-in: an initial self-test using this host's own address counted almost nothing, because locally-generated packets never traverse PREROUTING. Against the real remote client it counts 8081 at ~4/min, matching the roster server's own log. Known gap, recorded rather than hidden: the catch-all TOTAL runs well above the sum of the named ports, so the client makes steady background attempts to ports not tracked here. It is present during a working session, so it is not the failure signature, and it is not chased further here. verify-build-identity.sh now rejects an argument that is not a commit hash. Passing the binary path instead of its stamp previously produced a plausible "REFUSING: binary was built from ./target/release/... but HEAD is <sha>", which reads as a real stale-build finding rather than a caller mistake -- and a safeguard that cries wolf is one people learn to route around. Usage error is now exit 2, distinct from a genuine stale build (1) and success (0).
OpenFUT
Offline Ultimate Team — like SPT, but for FIFA 23.
OpenFUT replaces EA's retired FUT servers with a fully offline, single-player backend. You own FIFA 23 legitimately. You just want to keep playing after EA shut down the servers.
Repositories
| Repo | Purpose |
|---|---|
openfut-core |
Game-independent offline FUT backend |
openfut-bridge |
FIFA 23 integration layer + reverse-engineering proxy |
Architecture
FIFA 23 client
│
▼
┌─────────────────┐
│ openfut-bridge │ ← intercepts FUT traffic, maps routes, logs unknown
└────────┬────────┘
│
▼
┌─────────────────┐
│ openfut-core │ ← offline FUT backend: profiles, packs, squads, SBCs
└─────────────────┘
│
▼
SQLite database
Core is game-independent. It speaks a clean REST API and knows nothing about FIFA 23 internals.
Bridge is FIFA-specific. It speaks FIFA 23's wire protocol and translates it into Core API calls. Bridge is where all reverse engineering work happens.
Current Status
| Feature | Status |
|---|---|
| Local profiles + clubs | ✅ Working |
| Coin system | ✅ Working |
| Pack generator | ✅ Working |
| Card collection | ✅ Working |
| Squad builder | ✅ Working |
| Objectives engine | ✅ Working |
| SBC engine | ✅ Working |
| Match rewards | ✅ Working |
| NPC transfer market | ✅ Working |
| Statistics | ✅ Working |
| FIFA 23 integration | 🔴 Reverse engineering in progress |
| Chemistry calculation | 🟡 In progress |
| Full Draft mode | 🟡 In progress |
| Squad Battles AI generator | 🟡 In progress |
| Objectives claim flow | 🟡 In progress |
Running
# Start the offline backend
cd openfut-core
cargo run
# Start the proxy (for traffic capture / FIFA integration)
cd openfut-bridge
cargo run
Core listens on http://127.0.0.1:8080 by default.
Bridge listens on http://127.0.0.1:8443 by default.
Design Principles
- Offline-first. No EA account required. No internet connection needed.
- Single-player only. This is not a multiplayer server emulator.
- Data-driven. All cards, packs, SBCs, and objectives are JSON files. Everything is moddable.
- Clean architecture. Core has zero knowledge of FIFA 23. Bridge has zero game logic.
- No copyrighted assets. No real player images, no EA trademarks in data files.
Disclaimer
This project is not affiliated with EA Sports. You must own FIFA 23 legitimately to use this software. This project does not bypass any ownership verification and is intended only to restore offline playability of a game whose online services have been retired.