http://bugs.winehq.org/show_bug.cgi?id=13683
--- Comment #28 from Christopher Thielen christopher@thielen.co --- I believe I've found the resource at least. I wrote a sloppy port of the linked u9tools.zip's u9bmp to run under Linux with SDL and simply dump all the resources as .bmp files (there are around 8,000).
The file static/bitmap* contain textures but also 2D items like what appears in the backpack as well as the missing cursor!
So in the very least, I now know which file is opened to load this missing cursor resource from. Perhaps I can trace from the fopen() call and see what happens to these resources - I'll try first and see if they end up as regular cursors, else I imagine they're just D3D surfaces. Either way, you'd think they'd show up.