Hi there,

where to find a description of the subject? I wrote a simple PowerPC disassembler, but I wrote it for ELF file format, while MorphOS native executables has a MOS header with some data in front of the ELF contents. Any clue? It seams, that the header is some sort of encryption. Perhaps against disassemblers? :)

Thanks in advance,
Martin.

[ Edited by MarK 08.03.2013 - 07:31 ]

MorphOS components are DRMed indeed.

MorphOS native executables has a MOS header with some data

This is true only for system components released by the team. As jaca stated they are encrypted. Plain MorphOS native executables (not being system components/applications, or released by third parties) are just regular ELFs.

> It seams, that the header is some sort of encryption. Perhaps against disassemblers? :)

According to Laire (German), the encryption has been put in place to prevent the MorphOS components from running on older MorphOS versions. Without the encryption, the ELF binaries could be stripped and made to run on MorphOS 1.x (dependencies unconsidered).