Best tools for reverse engineering dos programs?

[LouCypher]

Originally Posted by an0rma1

SoftIce (2.80 or 2.62, i remember 2.62 was better, but don't remember why)

2.80 had a problem displaying MCBs in memory dumps.

[computerline]

Originally Posted by an0rma1

I've tried many times to use ida plugin for dos debugging with dosbox, but not been able to make it working.

What problem you got ? you could try my dosbox build, I use it for IDA 6.6 https://mega.nz/#!YAcRCRaC!rmh_sleyg...VCCvDHTIgSzxQ8

[bilbo]

I remembered in my old days, when I discovered the happiness of reverse
engineering DOS programs, I was a big fan of Sourcer, the "commented disassembler". IDA wasn't yet born!

The last version is available here:
http://xlb.es/Disassemblers/Disassemblers/Sourcer8.01/

Best regards

[TQN]

The debugger which I first used is Turbo Debug (Borland)

[taos]

Debug.com and the Norton Guide with the list of interrupts IBM PC/AT. All in 5 1/4 diskette
GOD!!! I'm very old X-)

Sorry for the offtopic!

[pp2]

You should use dosbox or qemu for debugging or reversing. The main reason - these programs can emulate _every_ instruction and both opensource, so you can modify them to accompany your research.

E.g. you can add some unique feature: breakpoint on register value (break, when ax=3), breakpoint on memory value, breakpoint on register access, etc. This helps reversing a lot.

[an0rma1]

This is what i have in my DOSEXE tools folder:

386swat.604-qualitas
ac.010198-Veit Kannegieser
ac.110398-Veit Kannegieser
addcode.10-unique
afdpro.10-adtec
aplib.012-jibz
aplib.017-jibz
aplib.018-jibz
aplib.019-jibz
aplib.020-jibz
avputil.22-vadim bogdanov
axehack.230
bp7pat.100-phax
BWS GAME CRACKER'S TOOLKIT.101-bws
com2txt.111-nide naoyuki
com2txt.12a-darkstalker
crackermate.210-ChanWaiKwong Wilfred
Deb16fw.296-japheth
Deb32f.296-japheth
debug.118-paul vojta
debug.125-paul vojta
deglucker.004rc-vsl
deglucker.004src-vsl
deglucker.005-vsl
dog.212a-k3
edb.015-Serge Pachkovsky
emulation extra-romlsoft
es.240498-Veit Kannegieser
execom.11-thomas hanlin
execombine.10-jeremy lilley
exetools.21-dismember
filter.5-elicz
flux show.164
game wizard 32.30-Ray Hsu & Gerald Ryckman
game wizard 32.30-Ray Hsu & Gerald Ryckman-registered
game wizard 32.30a-Ray Hsu & Gerald Ryckman
gametools.321-Wong Wing Kin
gametools.323-Wong Wing Kin
glue.110
hacktools.294
hacktools.300-Oleg N Kolesnikov
insight debugger.10
insight debugger.101
insight debugger.123
insight debugger.124
kartz.03-tai pan
keymaker & tools.30
keypro emu.421-werong ho
megadebugger.10-nps
Mephistopheles II Beelzebub.229-Sir Raorn & Pentium
MicroCosm CopyControl full patch.303-unforgiven
MicroCosm CopyControl Master Disk Editor.1002-unforgiven
MicroCosm CopyControl Master Disk Generic Copier.135-unforgiven
MicroCosm CopyControl Master Disk Generic Copier.300-unforgiven
MicroCosm CopyControl SheLL ProtectioN RemoveR 301 MZ.100-unforgiven
MicroCosm CopyControl SheLL ProtectioN RemoveR 4 MZ.100-unforgiven
minichainer.10-the beatles
nowhere utils.20
open watcom debugger.19-japeth
pack-turbo power
patching engine.35-xoanon
patchpas.10-basile vorontsov
peek.10-gurtyak
player's tool.40a-uhc
player's tool.50b-uhc
program cracker.730-dr stein labs
program cracker.740b-dr stein labs
propack.214-rob northen
pwmodew.133-Charles Scheffold & Thomas Pytel
rose faq
rtd_dat.10-mr wicked
search and destroy patch.10b-stone
sice.262-numega
sice.280-numega
snapshot.30-dale co
superkey.113-kmz
tbfence.400-tbav
tdhack.142-meteo
tecc.003-jibz
tp7tpl patch.duckling
tracer.20-earsoft
trw2000.103-liu taotao
trw2000.105-liu taotao
trw2000.122-liu taotao
trw2000.122superbpm-liu taotao
trw2000.123-liu taotao
trw2000.123r-liu taotao
turbo debugger 32.55-borland
turbo debugger.20-borland
turbo debugger.31-borland
turbo debugger.50-borland
turbochainer.103-twt
ultra crack.12-animadei
undog-doublestar
vload.09b-onyx
windows keypro emu.170-werong ho
windows keypro emu.180-werong ho
windows keypro emu.181-werong ho
xck2com.170-leon
xckmaker.105-psh
xckview-snow panther
xlink.202-jinx
xray.15-Tom Kihlken

If anyone needs something i can reup the complete collection to somewhere

[Kurapica]

Good old W32Dasm can never let you down !

https://tuts4you.com/download.php?view.1138

[an0rma1]

Originally Posted by Kurapica

Good old W32Dasm can never let you down !

https://tuts4you.com/download.php?view.1138

Unfortunately, W32dasm (very good in its time,btw) only is for Windows programs, for msdos exes, you need IDA, or if running in DOS Sourcer (best disassembler for DOS)

[an0rma1]

Some user asked me for a updated version of DOSEXE pack, so i uploaded:

check here newest dosexe pack

http://www.multiupfile.com/f/d4bad142

please share if you want, also please please if you could contribute anything just tell me, i am always looking for more material

[dogfriend]

if you are familiar with IDA you should give it a try with the DOSBox plugin

[ranadharm]

also give a try to Olly

[sendersu]

Olly for DOS? )

[ycloud]

SoftICE
Turbo Debugger
debug.com
TRW

[sendersu]

Pardon me bumping this old good thread, but
@an0rma1 - any chance to reup your great ancient DOS collection?
thx in advance