Microsoft SMBv3 CVE-2020-0796 whitepaper that discusses the workings, exploitation, and mitigations.
You can download it from the following link: https://packetstormsecurity.com/files/download/161675/CVE-2020-0796.pdf
Source: https://packetstormsecurity.com/files/161675/Microsoft-SMBv3-CVE-2020-0796-Exploitation.html