UPK file format (again...)

[Gildor]

Property format is relatively complex to explain. Check this open-source tool, probably it could help
http://forums.epicgames.com/threads/597581-Partial-UPK-file-extraction-achieved

[Gildor]

Thanks for the link. I had to modify source code as it didn't read NetObjectCount in export table

strange, UT3 has NetObjectCount

The tool identify the object as Texture2D (well, I'm glad ) and save it as DDS file without making any interpretation of the properties. Obviously, this is not DDS format as the header doesn't match DDS format.

data inside engine has no DDS header

I found this document http://www.mediafire.com/?i0hdn9gdd4a1obh describing UT package file format. Although it relates to UE1 or UE2, in page 8 there's a description of object properties. This obviously doesn't apply to my object, but I found a similarity : properties end with property "None" as offset 0x2A2AB of my dump (previous post) is 0x000000E1 and name_table[0xE1] is "None". Is it just an accident or could this be true ?

Is there others similarities between this document and actual object properties, or is it completely different ?

UE2 and UE3 property format is different, and the tool mentioned above should support properties (otherwise it would not be able to get texture format and dimensions).
And yes, property block is finished with name "None".

[Gildor]

Check this link too:
http://erictheturtle.blogspot.com/2009/01/dissecting-mirrors-edge.html
(link under "I've already updated it to work with Mirror's Edge" text)
I've looked at the source - this tool has property serialization in UE3PackageViewer.Objects.UnrealObject.getAllProperties() method.