funman300
21a81ad63c
Multi-agent pass over the store subsystem, 11 agents, findings run through three
adversarial verifiers. Full writeup in docs/plan-2026-08-05-store-subsystem.md.
THE REAL DISCARD TABLE IS RECOVERED. quick_sell() paid an invented rating tier
(600/300/150/50) that was wrong for every single card. The real table is
fcc_discardcoins in the client's own game DB, 141 rows keyed (cardtype, level, rare),
read out of the running client and verified 22/22 against live items:
value = round_half_up(rating * price / 100)
level = 3 if rating >= 75, 2 if 65..74, else 1 (0x180141e8a..0x180141ea3,
derived from rating, NOT a wire field)
cardtype = FUN_1800d8330(cardsubtypeid), decoded from its jump table and checked
across every subtype 0..599 with zero disagreements
A 94-rated gold rare is 752, not 600. A 76 rare is 608, not 150. A 55 bronze is 17,
not 50.
This also closes a disagreement nobody had noticed: the CLIENT already computes and
displays the correct value locally whenever our discardValue (atom 0xd7) is 0 or
absent. FUN_18013fe00 stores our value at item +0x38 and the guard at 0x180141025
skips the local computation when it is non-zero. So the screen has been showing the
real number while the server paid a made-up one, on every quick sell ever made.
Verified beyond what the report claimed, because a missing table row pays ZERO and
that would be a regression the old flat tier could not produce: across all 236 items
in the live profile, 230 map to cardtype 1 and 6 to cardtype 6, and NOT ONE would pay
0 coins. Table reproduces at 141 rows and the worked example lands exactly.
ZERO WIRE CHANGE, FUT_DISCARD_TABLE default off. Nothing new is sent; only the coin
figure the server credits moves. This is the patch worth defaulting on after one
in-game check, which is simply quick-selling a card and seeing the coins paid match
the value the card was already displaying.
THE GROUPING BUG IS NOT IN CARDSDLL, and the fix ranked first would have wasted a
launch. Live in the running client all three display groups own exactly the right
pack, there is exactly one copy of each pack record in 4 GiB, and nothing we send is
mis-parsed. The parsed model is correct and the Scaleform layer picks the wrong pack
when turning a tile click into a category id. displayGroupAssetId is served as 1/5/6
while the screen's category field reads 3, and group tiles carry a hardcoded
CATEGORY_ID of 0. Confirmed by direct read: ordinal 3, assetId 6, i.e. Premium, while
the last click was Gold.
The heap map that made this possible, all scoped to one pid: display-group vector
control block, 3 elements of 0x108; group record fields at +0x00 sortPriority,
+0x04 displayGroupAssetId, +0x40 a one-element pack vector; inner pack record 0x1a8
with packType at +0x38, ids at +0x70/+0xac, price at +0xa0, quantities at +0xc0..+0xd0.
extPrice SHOULD BE DELETED, not corrected. Both sub-parsers read only
externalPriceId; amount and currency are discarded. Sending the key at all creates an
"mtx" currency row that switches on a real-money price line the client can never fill
offline, which is the literal "or %1s" on every tile.
A WORRY NOBODY HAD RAISED, and I confirmed it from our own logs: the client has sent
packId 6 on every purchase it has ever made, four for four tonight and six for six
across history. We have never observed a successful buy of anything but Premium Gold.
Also settled: FUT_STORE_DISPLAYGROUP=0 is the right resting state, argued from
mechanism rather than from history; FUT_USERINFO=packs stays off because the
unopened-pack counter is client-mutable and the flag ladder silently drops squadList;
POST /user is a latent hard freeze that has never fired because the client never
issues that POST.
Honest coverage: the ActionScript layer is unread by everyone and every remaining
store mystery lives there.
Live: 439 contract checks pass, market suite passes, both flags off.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
60 lines
2.7 KiB
Python
60 lines
2.7 KiB
Python
"""DIMENSION 5 pass 4: who READS the unopened-pack count, and who consumes the
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CreateUser response record.
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Established so far (this run):
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userInfo 0x35e arm -> model+0x20950 = preOrderPacks + recoveredPacks, then raises
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event 0x273d. Writers of +0x20950: 0x18010e06a and 0x18011e12f. Reader: 0x18011c200
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(= model vtable slot 0x4d8). 0x273d compared at 0x18007e85f and 0x1800b3944, raised
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again at 0x180199e07.
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HYPOTHESIS: the 0x4d8 getter is called from UI/flow code that decides whether a
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pending-packs tile exists, and one of the 0x273d handlers is the refresh path.
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CONTROL: every call site is filtered by whether its containing function reaches the
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model singleton FUN_18011a830 / DAT_1802e6398. Call sites on OTHER classes' vtables
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that happen to use offset 0x4d8 must be rejected by that filter; if the filter rejects
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nothing it is not filtering.
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"""
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import traceback, os
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OUT = "/tmp/claude-1000/-home-alex-Documents-OpenFUT/8e521ca1-ca3e-4138-bb96-df1744dd1d30/scratchpad/store"
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SITES_4D8 = [0x1800160c0, 0x180019816, 0x18007136b, 0x18007e498, 0x1800ad460,
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0x1800aeccf, 0x1800aece6, 0x1800af449, 0x1800b1d48]
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SITES_4E0 = [0x1800173d1, 0x180019861, 0x18007137b, 0x1800ad498, 0x1800bcb71,
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0x18013f222]
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OTHER = [0x18010e06a, 0x18007e85f, 0x1800b3944, 0x180199e07, 0x18011c200]
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try:
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seen = {}
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for label, sites in (("get4d8", SITES_4D8), ("call4e0", SITES_4E0), ("other", OTHER)):
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print("\n===== %s =====" % label)
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for s in sites:
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f = func(s)
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if f is None:
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print(" %#x -> no function" % s)
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continue
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ent = int(f.getEntryPoint().getOffset())
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src = seen.get(ent)
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if src is None:
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src = dec(ent, 300)
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seen[ent] = src
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uses_model = ("FUN_18011a830" in src) or ("DAT_1802e6398" in src)
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print(" site %#x fn %s @ %#x len=%d model=%s" % (
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s, f.getName(), ent, len(src), uses_model))
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open(os.path.join(OUT, "dec_fn_%x.c" % ent), "w").write(src)
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# The CreateUser response object: find its class literal, vtable and consumers.
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print("\n===== FutCreateUserServerResponse =====")
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for lit in find_all(b"RS4:FutCreateUserServerResponse\x00"):
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print(" literal @ %#x" % lit)
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for frm, typ, fn, ent in xrefs_to(lit):
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print(" xref from %#x (%s) in %s @ %#x" % (frm, typ, fn, ent))
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if ent:
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src = dec(ent, 300)
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open(os.path.join(OUT, "dec_createuser_factory_%x.c" % ent), "w").write(src)
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print(" -> dec_createuser_factory_%x.c len=%d" % (ent, len(src)))
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print(src[:1800])
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except Exception:
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traceback.print_exc()
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