Completed the refusing-modes workflow (ground truth + 4 per-mode investigations + adversarial verify each + synthesis). All four mode families -- Seasons, Draft, SBC/Objectives, Tournaments -- are NOT_SERVER_REACHABLE, HIGH confidence, all four adversarial refutations failed. Live re-confirmed on pid 24653 (slide proven via FNV control): every named mode-gating byte reads ENABLED=1 (IS_FRIENDLY_SEASON_ENABLED +0x1fd3a, IS_TOURNAMENT_QUIT_ENABLED +0x1fd3b, IS_DRAFT_MODE_ENABLED +0x1fd3d, plus the unnamed offline-draft-enable +0x1fd3e) yet the tiles stay greyed. The new lead this pass added -- do the six /hub mode sub-objects gate availability? -- is refuted: friendlySeason/offlineSeason/onlineSeason/draftSummary/tournament/ tournamentProgress carry only stats and display strings, no enabled/available/ unlocked atom. They are cosmetic, exactly like hub.tradePile. The one server-writable input that exists (friendlySeasonsEnabled -> +0x1fd3a via applier FUN_18011dc50) has its sole reader in the packed FIFA17.exe front-end via a vtable getter with no CardsDLL caller, and it is already 1. The refusal is decided in the Denuvo-packed Frostbite front-end, which has no server surface. docs/plan-2026-08-06-refusing-modes.md: full evidence chains, gate-byte table, the six sub-deser field maps, per-mode verdicts. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Lrx9to3pihN6Sm9sXgc8np
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.