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>
73 lines
2.8 KiB
Python
73 lines
2.8 KiB
Python
"""ADVERSARIAL Q3.
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Attacking dim1 claim 10: "sortPriority is inert at the UI. It reaches pack+0x1a0 and is
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pushed to no Flash field ... Both are dead ends for this bug."
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An objdump scan of the store cluster found 0x1800108cd/0x1800108d3
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mov eax,[rsi+0x1a0] ; cmp [rbx+0x1a0],eax
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which is the shape of a SORT COMPARATOR on two 0x1a8 models, and 0x18002cc62
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mov [rbx+0x1a0],esi
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inside FUN_18002cc90, which FUN_18002c3c0 tail-calls AFTER setting +0x1a0 = sortPriority.
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Both were missed by "grep the push list".
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Also decompile:
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FUN_18002c8b0 -- the per-group filter in FUN_180014610; if it can HIDE a group the
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tile ordinals the user sees stop matching the group ordinals.
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FUN_18007e5e0 / FUN_18007df60 -- the six-panel binding (dim1 claim 7).
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FUN_18007e7f0 cases 0x7551 / 0x753f -- the CATEGORY_ID round trip.
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callers of FUN_1800147f0.
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"""
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import sys, traceback
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OUT = "/tmp/claude-1000/-home-alex-Documents-OpenFUT/8e521ca1-ca3e-4138-bb96-df1744dd1d30/scratchpad/store/adv/q3_out.txt"
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try:
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fh = open(OUT, "w")
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def P(*a):
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s = " ".join(str(x) for x in a)
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print(s); fh.write(s + "\n")
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for a in (0x1800108cd, 0x18002cc62, 0x180010b5c, 0x180011c2c):
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f = func(a)
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P("%#x -> %s @ %#x size=%#x" % (a, f.getName() if f else "NONE",
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int(f.getEntryPoint().getOffset()) if f else 0,
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int(f.getBody().getNumAddresses()) if f else 0))
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P()
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P("=== callers of FUN_1800147f0 ===")
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for frm, typ, fn, ent in xrefs_to(0x1800147f0):
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P(" from %#x %s in %s @ %#x" % (frm, typ, fn, ent))
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P("=== callers of FUN_180014610 ===")
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for frm, typ, fn, ent in xrefs_to(0x180014610):
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P(" from %#x %s in %s @ %#x" % (frm, typ, fn, ent))
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P("=== callers of FUN_18002c8b0 ===")
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for frm, typ, fn, ent in xrefs_to(0x18002c8b0):
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P(" from %#x %s in %s @ %#x" % (frm, typ, fn, ent))
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P("=== callers of the comparator's containing function ===")
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cf = func(0x1800108cd)
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if cf:
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for frm, typ, fn, ent in xrefs_to(int(cf.getEntryPoint().getOffset())):
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P(" from %#x %s in %s @ %#x" % (frm, typ, fn, ent))
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tg = []
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if cf: tg.append(int(cf.getEntryPoint().getOffset()))
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tg += [0x18002cc90, 0x18002c8b0, 0x18007e5e0, 0x18007df60, 0x180014b60]
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for t in tg:
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f = func(t)
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P()
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P("======== DECOMPILE %s @ %#x ========" % (f.getName() if f else "?", t))
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src = dec(t, 300)
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P("len(src) =", len(src))
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P(src)
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P("======== END %#x ========" % t)
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# full FUN_18007e7f0 (big) -- print only, it is the CATEGORY_ID round trip
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P()
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P("======== DECOMPILE FUN_18007e7f0 (full) ========")
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src = dec(0x18007e7f0, 600)
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P("len(src) =", len(src))
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P(src)
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P("======== END ========")
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fh.close()
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except Exception:
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traceback.print_exc()
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try: fh.close()
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except Exception: pass
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