Great ! so : https://xdaforums.com/zenfone2/development/script-boot-recovery-image-signature-t3690522
I guess you already tried it on z00d @wYoshi ?
I have tried. Apparently, It's the same error of Magisk: "The boot partition couldn't be found". Looks like z00d uses a exotic boot name or partition.
About the link above, "Boot/Recovery image signature patcher for Zenfone 2 [Z00A/Z008/Z00X]", there is a typo in the text that says z00d, but it is only for Z00A,Z008 or Z00X, as you can see by the title or the file content.