http://phinguin.dev/tags/ptrace/ Recent content in Ptrace on phinguin123 Hugo en-us 2026 phinguin Sun, 23 Jul 2023 12:00:00 +0900 http://phinguin.dev/blog/a-debugger-from-ptrace/ Sun, 23 Jul 2023 12:00:00 +0900 http://phinguin.dev/blog/a-debugger-from-ptrace/ A small C debugger that single-steps a program, rewrites its registers and memory, and changes what it does. Then figuring out why real debuggers don’t work like that — a breakpoint is literally one byte, 0xCC.