windows loader????

[adityamolugu]

hi,
how does windows loader work???. i have a executable which does not follow PE format,but i am able to run that...hows that possible???

[WX_0]

hi,
how does windows loader work???. i have a executable which does not follow PE format,but i am able to run that...hows that possible???

The portable executable isn't the only Windows executable in existance - could you be working with a COM (http://www.fileformat.info/format/com/corion.htm) file? It's one 64k segment, no more, but possibly less.


+-------------------------+
00h | Old-style header info |
+-------------------------+
20h | Reserved |
+-------------------------+
3Ch | Offset to segmented |
| .EXE header |
+-------------------------+
40h | Relocation table and |
| MS-DOS stub program |
+-------------------------+
| Segmented .EXE Header |
| . |
| . |
| . |


Source: http://support.microsoft.com/kb/65122