Second session. FUT core loop, the EASFC/POW online layer, a central account
backend, and a lot of corrections. Everything risky is behind an env flag with
the default set to whatever was live-proven.
WORKING END TO END (live-verified this session):
* match loop -- POST/PUT/POST/DELETE ut/%s/match, rewards via FutDestroyMatch
(0x180121b60). Play a match, get coins, W/D/L updates.
* packs -- buy, cards land in the club, session survives (FUT_PACK_AUTOCLUB=1)
* quick sell -- POST ut/delete/%s/item was UNMAPPED and paid NOTHING; six cards
were destroyed for 0 coins. Now credits discardValue.
* POW/EASFC online -- the "EA FC servers unreachable" banner is powdll's layer,
a THIRD http api on :8094 nobody had served. Redirect needs no root: powdll
FUN_18005a460 reads FIFA_POW_URL from the same client-config store as
ROSTERUPDATE_URL. FUT_POW=1.
* account backend -- fut_account.py replaces 7 hardcoded copies of the persona
across 5 files; club/persona/online-profile editable via CLI.
CORRECTIONS TO ENDPOINT_MAP (all re-extracted from the deserializers):
* FutStoreGetPackTypes: id/packType/isPremium/quantity/saleType/purchaseLimit/
purchaseCount are NOT skipped no-ops -- all are parsed. extPrice inner objects
take externalPriceId(0x11a), not amount/currency.
* FutMoveCard 0x180128600 has NO skip handler (FUN_180135ff0 appears zero times,
unique among FUT deserializers) and parses only itemData -> dreamSquads.
* class -> deserializer resolution: the name literal is preceded by a 4-BYTE
HEADER and the factory LEA points at the header, so look up name_addr - 4.
Six attempts failed on this; now ghidra_env.class_deser(). Unlocked 11 SBC/
Draft schemas.
* live-only endpoints the request table never lists: ut/%s/squad/list,
ut/%s/user/club, ut/%s/club/stats/*, ut/%s/clientdata/<key>. The template
table is a floor, not a ceiling -- the log is the only ground truth.
* 163 RS4 call names exist; we served 17. All now served.
FIXED: club/stats/* was answering with the entire 28-item club inventory on every
poll (it fell through to the generic /club route).
UNSOLVED: the pack reveal's "Send to Club" (PUT ut/%s/item) kills the FUT session
whatever we answer -- {} included -- while its sibling quick-sell endpoint accepts
a bare {}. Seven hypotheses eliminated by live test, documented in
REBUILD_RESEARCH.md S14c so none get re-walked. FUT_PACK_AUTOCLUB routes around it.
Also unfixed: store tiles render "unknown" (displayGroup is parsed RECURSIVELY by
the same element parser; sending it FROZE the store, so FUT_STORE_GROUPS=1 is
default off).
Tests: test_fut_contract.py 380 (live, read-only) + test_match_rewards.py 51 (pure).
Note: fut_store.py carries some pre-existing uncommitted changes from before this
session (pack catalogue ids, pending-pile behaviour) that could not be separated
from this session's additions in the same file.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VUT92pz6RWKih9dSr8ZpxW
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.