• If you wonder about the rbp register or about compiler flag to omit the frame pointer https://stackoverflow.com/questions/41912684/what-is-the-purpose-of-the-rbp-register-in-x86-64-assembler
• https://blog.rchapman.org/posts/Linux_System_Call_Table_for_x86_64/
• https://www.cs.virginia.edu/~evans/cs216/guides/x86.html
• https://www.sandpile.org/x86/gpr.htm
• https://en.wikibooks.org/wiki/X86_Assembly/Interfacing_with_Linux

Tutorials

• Introduction to radare2 and iaito (previously Cutter) https://www.jamieweb.net/blog/radare2-cutter-part-2-analysing-a-basic-program/
• Hack Tricks is a bomb https://book.hacktricks.xyz/reversing-and-exploiting/reversing-tools-basic-methods
• Megabeets https://www.megabeets.net/decrypting-dropshot-with-radare2-and-cutter-part-2/