REDIRECTOR. The first hop's <serverinstanceinfo> XML, byte-for-byte against the oracle across three advertised addresses. Owns the response only; TLS and HTTP transport belong to a host, exactly as the Blaze adapter owns dispatch while the sidecar owns the socket. The <secure>0</secure> field is the client being told the second hop is plaintext -- independent corroboration of the plaintext Blaze finding, now expressed in code. NUCLEUS IS NOT PORTED, and that is a finding rather than an omission. Instrumented across every live session: listener bound YES 0.0.0.0:42131 since 00:21:32 handler logs on connect YES unconditional, before any parsing client received the URL YES OSDK_NUCLEUS fetched 10+ times client connected NO zero requests, including 4 full FUT flows So the long-standing nucleusConnect=0.0.0.0 anomaly is explained: FIFA never follows that URL on this path. The invalid address has never mattered because nothing dials it. Porting the stub would add an untested component for no parity gain. TLS CONSTRAINT RECORDED, NOT RESOLVED. All 9 observed handshakes negotiated AES256-GCM-SHA384 = TLS 1.2 with STATIC RSA key exchange. rustls supports only forward-secret (EC)DHE suites and cannot serve that. Whether the client also OFFERS ECDHE is unknown -- OpenSSL follows client preference by default, so preferring static RSA does not prove it is the only option. This must be instrumented from a real ClientHello before a TLS stack is chosen; the module docs say so rather than guessing. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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.