3 #the first bytes of an image must be 4d 5a
5 assembly simple-assembly.exe
6 valid offset 0 set-byte 4d
7 invalid offset 0 set-byte 4e
9 valid offset 1 set-byte 5a
10 invalid offset 1 set-byte 0
12 #the spec says it should be 0x90 but no modern COFF loader cares about this.
13 valid offset 2 set-byte 00