CrackingUnpackingI Need to unpack this program (EXECryptor 2.20 - 2.40)

03 Jan 2009, 18:43

hi

Can any one experienced with unpacking help me to unpack this file

it a file from a program called AudioConverter Studio
the file is a trial version, but i don't want to crack it, JUST UNPACK

the file i want to unpack is 'converter.exe' which link is here

the program cannot be unpacked using unpacker by RSI

the full program package (only 4 MB) can be downloaded from here if needed


thanks for advance

Rating 0 Comments 27
Dielbach
0
Dielbach 03 Jan 2009, 21:52 #
Hello my Friend Sup.....!

Go to Offset 0056E068 in Ollydebugger (Push EBP), replace in C3 Return and have Fun! ;) :b :h
tHeGeNiUs
0
tHeGeNiUs 03 Jan 2009, 22:17 #
Dielbach said:Hello my Friend Sup.....!

Go to Offset 0056E068 in Ollydebugger (Push EBP), replace in C3 Return and have Fun! ;) :b :h


thanks very much Dielbach, file was dumped, OEP found, IAT fixed and program
runs like a swiss watch :h

can you please tell me how can i find that address in any execryptor target ?

thanks
Dielbach
0
Dielbach 03 Jan 2009, 22:35 #
C3 removed the Nag and Trial Limit in your Unpacked.exe!
tHeGeNiUs
0
tHeGeNiUs 03 Jan 2009, 22:38 #
thanks Dielbach

does that mean that the file can be unpacked without doing this patch ??

thanks
Dielbach
0
Dielbach 03 Jan 2009, 22:41 #
Here ist the Unpacked Patched exe:

http://www.sendspace.com/file/dfivyh
tHeGeNiUs
0
tHeGeNiUs 03 Jan 2009, 22:46 #
thanks but i already fixed the file and now works

thanks for your help
Dielbach
0
Dielbach 03 Jan 2009, 22:47 #
No Problem!
You have some Problem's, tell me! :b
tHeGeNiUs
0
tHeGeNiUs 03 Jan 2009, 23:42 #
thanks man
tHeGeNiUs
0
tHeGeNiUs 04 Jan 2010, 04:26 #
hi again Dielbach

i want to ask you again about Execryptor

i have some programs which is packed with it, however after upacking successfully
they show a message 'file corrupt' and the program close after a while

how can i patch the CRC or the 'the file corrupt' check ?

thank you
Dielbach
0
Dielbach 04 Jan 2010, 10:43 #
API Create FileA, GetFileSize usw.
tHeGeNiUs
0
tHeGeNiUs 04 Jan 2010, 14:14 #
sorry, i don't understand what you are saying

can you explain it ? - thanks
william22
0
william22 04 Jan 2010, 21:26 #
Interessting stuff.
Maybe Dielback can help us with Advanced Virtual Com Port?
Dielbach
0
Dielbach 05 Jan 2010, 21:29 #
What is the Problem with the App Advanced Virtual Com Port ??

Give me a link. ;)
Dielbach
0
Dielbach 05 Jan 2010, 21:48 #
The Problem is EXECryptor! ;D ;D :b

Please: http://www.sendspace.com/file/a3sf9w
tHeGeNiUs
0
tHeGeNiUs 05 Jan 2010, 22:31 #
hi dielbach

the problem here is not EXECryptor
we already unpacked it using Unpacker by RSI

william wonders if you can help us in cracking it...this program is a really nasty thing

anyway, the program link is here
Dielbach
0
Dielbach 06 Jan 2010, 13:07 #
So, look at Adress

004082CC . 50 PUSH EAX
004082CD . E8 34610000 CALL 0040E406 ;
004082D2 . 8B86 C8010000 MOV EAX,DWORD PTR DS:[ESI+1C8]
004082D8 . 83C4 0C ADD ESP,0C
004082DB . 85C0 TEST EAX,EAX ----------------- Here!!
004082DD . 75 68 JNZ SHORT 00408347 ; Avcp_u.00408347
004082DF . 68 0BE00000 PUSH 0E00B


Good Luck!
tHeGeNiUs
0
tHeGeNiUs 06 Jan 2010, 13:15 #
hi dielbach

thanks, but i already found this line

if you forced the condition at 004082DD to JMP, the program will never expire

but this is not the problem

the problem is that program can only MAKE 2 COM PORTS in the trial version, and i also overriden the message the tells you that, so the program will just put a new port image, but the port is not working(unlike the first 2 ports,when you click one it says it's opened or closed, the new one will say please choose a port)

and another thing, did you notice that the program gets the information
from a windows service file called 'AvcpService.exe' ??
this file is suspicious to be the file to be cracked
(if you attached it to olly and paused it then run 'Avcp.exe', it will wait for the
service to give something....)


this is the whole thing, the REAL HARD THING
Dielbach
0
Dielbach 06 Jan 2010, 14:44 #
Is the Message Cannot add port.Error Code 06.... ???
Dielbach
0
Dielbach 06 Jan 2010, 15:00 #
The program does not run properly for me.
Sorry.
Dielbach
0
Dielbach 06 Jan 2010, 15:04 #
00406C20 --------75
00406CA3 --------74

the new Port is in the Program.
Dielbach
0
Dielbach 06 Jan 2010, 15:15 #
Sorry, the Program Kill's my E-mail Account on my System and so only!
Shit. 0-) 0-)
tHeGeNiUs
0
tHeGeNiUs 06 Jan 2010, 16:27 #
ok, thanks for trying to help, Dielbach
Dielbach
0
Dielbach 06 Jan 2010, 16:42 #
The next target once again like to. :b
william22
0
william22 08 Jan 2010, 15:53 #
+ 0 Dielbach pm 06 Jan 2010, 14:44 ! " #
Is the Message Cannot add port.Error Code 06.... ???


Yes it is. It means the trial period is over.
Looking for a way to reset the trial days. Trial-Reset isn't working.
Keeps me pretty busy this nasty program, well it has'nt been cracked ever...
tHeGeNiUs
0
tHeGeNiUs 09 Jan 2010, 00:31 #
that service file....
william22
0
william22 26 Jan 2010, 21:12 #
The files are just not completely unpacked is it? Isn't there a plugin/program
to re-Line-up the jumps & calls.
This is really execryptor at work...

Is there someone who can give me more info on that?
Gregoria
0
Gregoria 03 Apr 2012, 01:00 #
HI
i have problem`s with unpacking of execryptor
i used the Unpacker.ExeCryptor.2.x.x.RC2 for the litle program but when i wont to fire it up in ollydbg,
olly terminating the process and i cant finish it. 0-)

i think it was an crc check but im not sure
any one can help me

here is the link
link

many thanks
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