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]

Originally Posted by 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???

The portable executable isn't the only Windows executable in existance - could you be working with a COM 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