Reverse-engineered the exact FIFA17 store/purchase/credits response
shapes (wf a245577b + wf_76fcf89b) and applied them:
- Store catalog: root key MUST be "purchase" (atom 608) not
"purchaseGroups"; packs keyed by "id" (int16) not packId; price is a
"currencies":[{name,funds,finalFunds}] array; name is "description".
Our old {purchaseGroups:...} hashed to unknown atoms -> empty -> "store
not available". Now the store displays.
- Pack buy: gate open_pack on a transaction with "packId" and state !=
TRANSACTIONCANCEL (the TRANSACTIONCREATED create step) -- fixes the
phantom-buy. Reveal response = {"createPackResponse":{itemList,
numberItems,purchasedPackId,duplicateItemIdList}}
(FutCreatePackServerResponse).
- Coins: /user/credits must return currencies[name=="coins"].funds, not
{"credits":N} (the hub/store read currencies). squad_route also
reconstructs the active squad from club item-id references.
Verified via curl: store shows 3 packs; cancel spends nothing; Bronze
buy awards 5 real players and deducts 400 coins. NOTE: the FUT HUB coin
counter reads from userMassInfo (not /user/credits) -- still blocked on
the userMassInfo-freeze wall (separate reverse in progress).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PN5bmpDVQR1aXgefyWAt7o
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.