Skip to content

Raise metadata registration sanity limit for Unity 6 games #604

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
HHHEEEWWW wants to merge 1 commit into
base: development
Choose a base branch
from
Open

Raise metadata registration sanity limit for Unity 6 games #604

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
12 changes: 10 additions & 2 deletions LibCpp2IL/BinarySearcher.cs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -349,10 +349,18 @@ public ulong FindMetadataRegistrationPost24_5()
if (i % 2 == 0)
{
//Count
ok = mrWords[i] < 0xC_0000;
// Sanity limit for metadata registration count fields.
// Unity 6 (6000.x) games can legitimately exceed 0xC0000
// (e.g. Pax Autocratica on 2026-08 update had ~0xD04C4),
// which made real registrations get rejected and interop
// generation fail with "Failed to find code registration
// or metadata registration!". Subsequent checks
// (typeDefinitionsSizesCount / numTypes vs metadata)
// still validate candidates, so this is only a coarse filter.
ok = mrWords[i] < 0x4_00000;

if (!ok)
LibLogger.VerboseNewline($"\t\t\tRejected Metadata registration at 0x{va:X}, because it has a count field 0x{mrWords[i]:X} at offset {i} which is above sanity limit of 0xC0000. If metadata registration detection fails, may need to bump up the limit.");
LibLogger.VerboseNewline($"\t\t\tRejected Metadata registration at 0x{va:X}, because it has a count field 0x{mrWords[i]:X} at offset {i} which is above sanity limit of 0x400000. If metadata registration detection fails, may need to bump up the limit.");
}
else
{
Expand Down