funman300
afdbb364ca
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>
124 lines
4.8 KiB
Python
124 lines
4.8 KiB
Python
# -*- coding: utf-8 -*-
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"""
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q_pack_inv_7 -- DIMENSION 1 pass 7: who READS unopened(0xcd) and the unopenedPacks total.
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HYPOTHESES
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(a) The store pack element built by FUN_18013af30 is 0x158 bytes; `unopened`
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(atom 0x35d) lands at byte offset 0xcd and `useDefaultImage` at 0xcc.
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Any x86 access with disp32 == 0xcd inside .text is a candidate reader.
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(b) The FUT model singleton (DAT_1802e6398, written by FUN_18011d780) has a
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vtable whose slot +0x4e0 is the unopenedPacks-total setter. Find the vtable
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by locating the ctor that both calls FUN_18011d780 and stores a vtable ptr.
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(c) displayGroup(0xd9) is an OBJECT {priority(0x250):int, value(0x377):string};
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value lands at element offset 0x00 and priority at 0x34, and the My Packs UI
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FUN_1800150d0 compares offset 0 against the literal "mypacks".
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CONTROLS
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* The disp32==0xcc scan MUST return FUN_1800150d0 (hand-verified: it reads
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*(char *)((longlong)puVar10 + 0xcc) to pick the pack background image).
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* The disp32 scanner is also run for 0x34 and must return FUN_1800150d0 too.
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* class_deser("FutSquadSaveServerResponse") must still be 0x180171a60.
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"""
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import struct
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import traceback
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OUT = "/tmp/claude-1000/-home-alex-Documents-OpenFUT/8e521ca1-ca3e-4138-bb96-df1744dd1d30/scratchpad/packres"
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def disp32_readers(disp):
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"""functions containing a modrm with mod=10 and this disp32."""
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pat = struct.pack("<I", disp)
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out = {}
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for h in find_all(pat, blocks=(".text",)):
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try:
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prev = read_bytes(h - 1, 1)[0]
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except Exception:
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continue
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if not (0x80 <= prev <= 0xBF):
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continue
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f = fm.getFunctionContaining(addr(h))
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if f is None:
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continue
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e = int(f.getEntryPoint().getOffset())
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out.setdefault(e, []).append(h)
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return out
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try:
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got = sorted(set(x[0] for x in class_deser("FutSquadSaveServerResponse")))
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print("CONTROL FutSquadSaveServerResponse -> %s %s"
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% ([hex(g) for g in got], "PASS" if 0x180171A60 in got else "FAIL"))
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for disp, tag, ctl in ((0xCC, "useDefaultImage (CONTROL)", 0x1800150D0),
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(0xCD, "unopened", None),
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(0x34, "displayGroup.priority (CONTROL)", 0x1800150D0)):
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r = disp32_readers(disp)
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print("\n### disp32 %#x %s : %d functions" % (disp, tag, len(r)))
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if ctl is not None:
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print(" CONTROL %#x present: %s" % (ctl, "PASS" if ctl in r else "FAIL"))
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for e in sorted(r):
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f = fm.getFunctionContaining(addr(e))
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print(" %#x %-30s sites=%s"
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% (e, f.getName(), [hex(x) for x in r[e][:6]]))
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print("\n########## MODEL SINGLETON CTOR / VTABLE ##########")
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ctors = set()
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for (fr, ty, fn, en) in xrefs_to(0x18011D780):
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print(" caller of FUN_18011d780: %#x %s @%#x" % (fr, fn, en))
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if en:
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ctors.add(en)
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for e in sorted(ctors):
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s = dec(e)
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print("\n--- ctor candidate %#x len=%d" % (e, len(s)))
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print(s[:4000])
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open(OUT + "/d1_modelctor_%x.txt" % e, "w").write(s)
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print("\n########## VTABLE SCAN in .rdata for tables >= 0x950 bytes ##########")
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LO, HI = 0x180001000, 0x1801E4F62
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blk = None
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for b in mem.getBlocks():
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if b.getName() == ".rdata":
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blk = b
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start = int(blk.getStart().getOffset())
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end = int(blk.getEnd().getOffset())
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data = read_bytes(start, end - start + 1)
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n = len(data) // 8
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qs = struct.unpack_from("<%dQ" % n, data, 0)
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i = 0
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found = []
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while i < n:
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if LO <= qs[i] <= HI:
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j = i
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while j < n and LO <= qs[j] <= HI:
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j += 1
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if (j - i) * 8 >= 0x950:
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found.append((start + i * 8, (j - i) * 8))
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i = j
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else:
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i += 1
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print("candidate vtables >= 0x950 bytes: %d" % len(found))
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for va, sz in found:
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f4e0 = qword(va + 0x4E0)
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f940 = qword(va + 0x940) if sz > 0x940 else 0
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n4e0 = fm.getFunctionAt(addr(f4e0))
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n940 = fm.getFunctionAt(addr(f940)) if f940 else None
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print(" vtable %#x size %#x [+0x4e0]=%#x %s [+0x940]=%#x %s"
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% (va, sz, f4e0, n4e0.getName() if n4e0 else "?",
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f940, n940.getName() if n940 else "?"))
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if n4e0 is not None:
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s = dec(f4e0)
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print(" --- [+0x4e0] len=%d\n%s" % (len(s), s))
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open(OUT + "/d1_vt%x_slot4e0_%x.txt" % (va, f4e0), "w").write(s)
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print("\n########## pack-element consumers ##########")
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for va, tag in ((0x180014380, "find_group"), (0x18002C3C0, "tile_from_packelem"),
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(0x180012950, "group_ctor")):
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s = dec(va)
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print("\n--- %s %#x len=%d" % (tag, va, len(s)))
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print(s)
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open(OUT + "/d1_%s.txt" % tag, "w").write(s)
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print("\nDONE q_pack_inv_7")
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except Exception:
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traceback.print_exc()
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