Hi!
21-Авг-2006 17:32 [EMAIL PROTECTED] (Aitor Santamarэa) wrote to
[email protected]:
>> Not need to convert exe/sys to plain sys, especially because combo may
>> give additional features (like information about status) without additional
>> executables.
AS> I was talking of converting COM to SYS. I may try to make it an EXE
AS> (in the future a COMBO), but it seems that I won't be saved from UPX
AS> greediness.
There is two ways:
1. force fixing UPX.
2. convert DISPLAY to plain executable:
2.1. by defining EXE header directly (as data structure) in source (thus,
avoiding extra step with COM2EXE);
2.2. or link directly to executable (for TLINK, omit /t option).
(1) is useful in any case; (2.1) is best between "COM2EXE" and "plain .EXE"
(because it allows to imitate COM2EXE behavior, but it also allows define
header in more flexible way).
AS> So either there is a way for a device driver to safely go beyond its
AS> original size, or perhaps I could try:
AS> NASM => APACK => COM2EXE.
No! Packer should come _after_ COM2EXE!
AS> Eric, it wasn't clear for me what is the DISPORG.EXE thing that you
AS> mentioned.
As I understand, DISPORG.EXE is unUPXed executable, and Eric shows,
that without bug in UPXed header, DISPLAY may be loaded into UMB. (Issue is
only that DISPORG.EXE is 62k in size).
AS> If it is just the same DISPLAY.EXE where you just modified
AS> the EXE header, I can make just a temporary tool to patch it.
AS> Best could be that I contact the UPX guys for it, but it may in turn
AS> it could be that the decompressing algorythm may well NEED those 12X+
AS> KB to run.
No! As I already show (please, see attentive my previous letters),
identical executable (with only different initial values for CS:IP and
SS:SP) does NOT requires so many memory.
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