[mm10121991]

Yes, obsiduim has a custom way to detect hwbp. If I remember well, It sets the hwbp to some specific location in the code to trigger the seh and the seh will set some values in memory.
after returning from the seh, those values will be tested to detect if hwbps were modified.

if you want to get near oep on 4.x targets, you can use this script.
It worked on many targets but I don't guarantee that it will work always.
Use a hidden olly.No hwbp and start it from entrypoint.