1605e6effd66e93f17c2adf74e4544a66bed1b30
5 Commits
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 funman300
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1605e6effd |
fifa17-recon: the envelope rule, and the one key of the auth body that is silently eaten
The open question was whether a response deserializer DESCENDS a wrapper or PROBES for
one. Three roots spend an identical three tokenizer calls before dispatch, yet we serve
some bodies wrapped and some flat, and not all of those could be right.
TOKEN ENUM, decoded from the class table at DAT_18023dd40 and the switch in the
classifier FUN_1801c67a0 (the push/pop arms key off container state 2 = object,
3 = array):
9 START_OBJECT case 0x64, pushes state 2
10 END_OBJECT case 0x65, pops state 2
11 FIELD_NAME confirmed independently: FUN_18013bd40 tests +0xd0 == 0xb then
atom-hashes the string at +0xf8
12 START_ARRAY case 0x66, pushes state 3
13 END_ARRAY case 0x67, pops state 3
1 error the caseD_78 sink
So the three tokens are `{`, the first FIELD_NAME, and the token opening that field's
value. The envelope is structurally required and its name is NEVER hashed, which is why
FutCreatePack's ladder has no arm for createPackResponse (0xbe) and does not need one.
Coverage for that absence: the ladder has exactly four arms (0xec, 0x16e, 0x1dd, 0x264)
and 0xbe does not occur anywhere in the full 4702-char decompile, printed in full.
The competing reading rested on a factual error. It claimed the /purchased root spends
the same three tokens. FUN_180124ee0 spends TWO and hands off to FUN_18013bd40, which
spends the third. Same total, split across two functions. /purchased never was a
counterexample.
THE BUG THIS FOUND IS NOT THE ONE THAT WAS PREDICTED. The doc expected starterPack,
squad and userData to be swallowed on POST /user. They are not. FutCreateUser
(0x18014cc60) has ladder arms for exactly the five keys we send, and four of them
dispatch correctly at the outer level. The one that does not is `login`: its name is
eaten as the anonymous envelope and its value as the third token. It has an arm, so the
client wants it, and it has never once been delivered.
The second-order consequence matters more than the first. The key order of that dict is
load-bearing and nothing said so. Put userData first and the client loses the entire
user record, silently, with no error and no log line. That warning now sits in the code
next to the dict, which is the only place someone about to reorder it would look.
No behaviour change here. The utas_server.py edit is a comment. 439 contract checks
still pass. The probable proper fix, wrapping all five keys one level down inside a
single envelope key, is a hypothesis with a mechanism rather than a proven fix, and it
touches the login path, so it is not made here and would go behind a flag defaulting
off.
Writeup is section 2 of docs/plan-2026-08-05-pack-opening.md, added by the previous
commit. Opened by this and still UNKNOWN: GET /hub is answered with a flat two-key
body, which under this rule a three-token root would silently truncate, but there is no
FutGetHubServerResponse class and neither atom has a code xref, so /hub may not go
through a generated root at all.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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funman300
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afdbb364ca |
fifa17-recon: pack opening reversed end to end, and there is no pack-inventory endpoint
A twelve-agent pass over the parts of pack opening we did not understand, run against
the live client (CardsDLL slide proven, not assumed) plus static CardsDLL. Findings
below survived an adversarial verification round that corrected several of them; where
a verifier and a finder disagreed, the verifier won.
THE HEADLINE IS A NEGATIVE, and it deletes work rather than creating it. There is no
pack-inventory endpoint in FIFA 17 and there never was. Proven three independent ways:
the 48-entry UTAS route template array at 0x18021df80, a regex for "ut/" over the whole
PE, and the 125-row client action table at 0x1802caa20, which is the complete set of
requests the client can originate. "Serve the pack inventory" comes off the backlog.
The unclaimed-pack tile and My Packs are two fields on responses we already build.
Corrections to ENDPOINT_MAP.md, both freeze-risky as written:
* duplicateItemIdList is an array of OBJECTS (element parser 0x180138e10: itemId
0x16d, duplicateItemId 0xeb, itemLoans 0x16f, duplicateItemLoans 0xed), not the
int list documented at :1095 and :218. Control that this is not a misread:
dreamSquads 0xe9 in FutMoveCard genuinely is a bare int array and parses with no
inner object loop. We serve [], so this is a docs bug today and a live freeze the
moment somebody implements it from the map as written.
* FutDiscardCardServerResponse is {"items":[{"id":N}],"totalCredits":N}. There is no
top-level id. :968-971 is wrong twice over.
packContentInfo is DECORATIVE. It is read only into a store-tile view model, and
nothing compares the declared counts against the delivered itemList, so open_pack()
does not have to honour the distribution.
The reveal is entirely CLIENT-SIDE. Walkout, tiering, colours and ordering are
arithmetic over fields we already send. Genuine outstanding server work reduces to
three items: duplicates, quick-sell credit, unopenedPacks.
Perishable intel captured: the real FIFA 17 retail pack catalogue, 41 SKUs with Origin
offer ids, recovered from the client heap as a parsed copy of data/store/storecfg.xml.
It is in no file on disk, only in a running process.
futmem/ is a standalone read-only Rust crate for this kind of work (maps, find,
strings, read). Read-only by construction: it opens /proc/<pid>/mem with File::open
and there is no code path in it that can write to another process, because a live game
session depends on that. Its own [workspace] table keeps it out of the parent
workspace. Chunked scanning overlaps by pattern_len-1 so a match spanning a chunk
boundary is still found.
utas_server.py gains FUT_PORT/FUT_LOG so a throwaway instance can be started without
bouncing the one the live client is using. Defaults unchanged (8099, /tmp/utas_server.log).
Noted for the record: this edit came from a research agent that had been told not to
touch server code. It is benign and useful, but it was out of scope.
Not committed: the doc proposes ENDPOINT_MAP.md changes as pasteable text rather than
applying them, and every proposed server change defaults off per the house rule.
Nothing in this commit changes a response the client sees.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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funman300
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897259c8fb |
fifa17-recon: the /settings 42-flag gate, and why Seasons never asks
ENDPOINT_MAP said this class reads one key, `configs`, and that was true and useless. What it missed is what happens after each element closes: the client feeds the STRING VALUE of `type` back through the atom hasher and switches on the result, 42 arms wide. A flag is a row, not a key, and the client hashes our string itself. Followed it to the end. FUN_18011dc50 is the only writer of the IS_* UI gate bytes inside FutDataManagerImpl, every line is `byte = (field == 1)`, and the constructor never touches those bytes. So a flag nobody sends is a gate nobody opens. friendlySeasonsEnabled and enableDraftMode have never been sent by anything, which is a mechanism for Seasons refusing while making zero requests to any of the four servers. The store is the control that makes this readable: IS_STORE_ENABLED is the same kind of byte and its screen works, because storeEnabled and friends already ship through the Blaze config store. That list has no seasons or draft flag. Ship the gates behind FUT_SETTINGS (off/keep/gates, default gates), and re-assert the working store flags in the same array on purpose: once a populated array makes the applier run, it writes EVERY gate byte, so omitting them could switch off a screen that works today. maximumTradePileSize=100 rides along as a positive control, because a boolean that changes nothing cannot distinguish "the flag did not help" from "the array never reached the consumer". check_settings_flags.py asserts each shipped name against the atom table AND the recovered switch, since a misnamed flag is silently inert and looks exactly like a failed fix. enableSquadBuildingSetsFeature is the reason both checks are needed: a real atom with no arm here. Live: 439 contract checks pass, market unit suite passes. Not yet tested in game. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> |
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funman300
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0f83d73364 |
fifa17-recon: the consumables panel asks 41 times a session and we answer with players
Round 3, 10 agents. The headline is measured, not inferred: GET club/stats/consumables
is requested 41 times per session by the real client (ProtoHttp), and _club_stat_set()
answers it with the PLAYER stat set. The panel reads 14 consumables* names that we
have never sent, so it is told '205 players' when it asked how many contracts the club
owns, and it has nothing to show.
That also explains why last round's 126-item consumable shelf was never requested. It
serves type=contract|training|healing|development and an UNTYPED /club with no
team=/league=, and all 9 of the client's untyped requests this session carry team=. The
only +126 item(s) line in the whole log came from one of our own probes.
Vocabulary recovered: the 14 consumables* rows plus badgeDBid 0x2e, kitsHome 0x29,
kitsAway 0x2a, leagueLogos 0x2f, trophiesSeasonOnline 0x38.
Other measured surfaces the client asks for and we fob off: GET /settings 11x answered
with an empty config array (a 40-flag feature gate, the biggest untouched lever in the
project), leaderboards/options 5x with {}, user/accountinfo 4x with {}.
club/stats/staff is a DIFFERENT class (FutStaffBonus); the staff counts come from the
Stats2 store, which is why the staff screen worked while we answered {}.
Refuted: ENDPOINT_MAP's claim that objectives have no route. FUN_180151610 builds
<base>/objective/%d/reward and FUN_180147780 builds .../complete.
New modules only. utas_server.py is deliberately untouched: whether to wire the counts
depends on a free observation the human can make on the client that is already running,
and spending a restart before that is what this round exists to avoid.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VUT92pz6RWKih9dSr8ZpxW
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funman300
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59934b4ef0 |
fifa17-recon: FUT squad blocker solved + userInfo delivered
The client now issues PUT /squad and the hub renders coins, record and the
squad roster. Three separate root causes, all verified live.
Squad blocker (the long-standing "client never sends PUT /squad"):
AddPlayerToSquad, GetSquads and SelectSquadById issue ZERO network requests
(pure local model reads/mutations, FutSquadServiceImpl vtable 0x180233ff0);
only SaveCurrentSquad writes, and it is unguarded. The client simply needed a
populated ACTIVE squad model, which arrives via the massinfo `squad` member.
No response of ours was ever being rejected.
userMassInfo is NOT required to be {}:
0x180174630 is a FLAT {userInfo, squad, settings, userData} body -- the old
"wrapper key is user" note was wrong, and the historical freeze was the
malformed squad member, not the envelope.
clubNameChangeAllowed must be false:
sending true advertises a club-rename flow whose UI model is never populated;
the client shows a naming prompt and dies confirming it (ACCESS_VIOLATION
reading 0x0 at FIFA17.exe+0x71b8651, 4/4 runs, no CardsDLL frame and no request
in flight). Isolated by a single-variable run; guarded by a contract check.
Endpoint/schema corrections found in live traffic, invisible to static analysis:
* GET ut/%s/squad/list is a real endpoint and must return {"squad":[...]},
not the active-squad object (the /list suffix is appended by the caller, so
it never appeared in the request table)
* PUT lands on ut/%s/squad/<id>, not a bare ut/%s/squad
* userInfo currencies are read as name/funds/finalFunds/active -- there is no
"value" key, so coins always rendered 0
* squad-list elements take STRING formation/squadType, not ints
* the CardsDLL script-API thunk<->name table was off by one (AddPlayerToSquad
is 0x18004aa70; 0x18004aff0 is GetPotentialChemistry_Club)
FUT_MASSINFO / FUT_USERINFO ladders keep every step of the bisect reproducible.
Contract suite 311 -> 358 checks. Tooling added: PyGhidra harness (Ghidra's
Java/OSGi script path is broken on this box), minidump reader, live code grabber.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VUT92pz6RWKih9dSr8ZpxW
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