Is it really not ELF? The file starts with the \x7FELF magic, but I'm not by my laptop to see what `file btry` outputs.
GP is likely referring to how fields in the ELF and program header are abused for instructions and data in a way that happens to not break things on Linux.
alt Hacker News
GP is likely referring to how fields in the ELF and program header are abused for instructions and data in a way that happens to not break things on Linux.