I've worked as an embedded software engineer, so this stuff is second nature to me. I have good English skills, combined with a deep understanding of low level computing concepts. This combination is rather hard to find, especially on an outsourcing website.
I can also tutor over skype.
Here's an assembly related project that I've done: https://www.freelancer.com.au/projects/Java-Python/Instagram-signed-body-getInstagramString.3095529.html (You may need to remove the .au for the link to work with your account.)
Please let me know what you timeframe is, so that I can make sure that I'm free at the right time.
Cheers,
Calin