homepage ;

interested in [web/software/architectural] security, reverse engineering
& doujin music & BMS
ctf w/ IrisSec, 💦 sometimes

articles
╔═▷ bpf in seccomp
╔═▷ css injection quick sheet
╔═▷ smt solvers and s-boxes
╔═▷ building OnePlus kernels

some writeups
╔═▷ irisctf 2023 author writeups
╔═▷ irisctf 2025 author writeups
╔═▷ other writeups on irissec.xyz || github

mailto s ​at​ ryuumusu.me