Code:
Syntax: SOF <extracted_stream> <main_data>
Drawbacks:
1. Slower than you would expect.
2. Files size of more than 2Gigabytes are not supported.
If you're sure that the stream is inside but the tool doesn't detect it, it's because i splitted the search in two to use two threads, so the file's one half might be left on the other side and not caught by the tool.
Note: That -1 difference in the screenshot is HxD way of working, if you want to use HxD always consider one less offset than original.
E.g Start offset : X, End offset : Y
for HxD, Block would be X to (Y - 1)
Please report back bugs, Thank you.