Explore advanced topics in symmetric cryptanalysis through a 41-minute conference talk presented at RSA Conference. Delve into two key areas: an efficient strategy for constructing better differentials on multiple-branch-based designs, with a focus on application to Orthros, and rotational-XOR differential rectangle cryptanalysis on Simon-like ciphers. Learn from presenters Kazuma Taka, a student from the University of Hyogo, and Mingming Zhu, a Masters Candidate from the School of Cyber Science and Technique at Hubei University, as they share their insights and research findings in this cutting-edge cryptography session.