InstallSHIELD Script Cracking
(Object oriented cracking: INSTALL WIZARDS CRACKING)
by NaTzGUL
(22 November 1997, slightly edited by Fravia+)
Advanced Cracking Series
Courtesy of Fravia's page
of reverse engineering
Well, a very interesting essay. Here we have a very "sound" approach to
Installshield cracking. Read and enjoy!
InstallSHIELD Script Cracking
(Object oriented cracking: INSTALL WIZARDS CRACKING)
Author : NaTzGUL [REVOLT´97]
Email : natzgul@hotmail.com
(Released on Nov.18.1997)
CONTENTS: A) INTRODUCTION (It´s only an Intro )
B) TOOLS YOU WILL NEED (Well i think most of ya got these Tools)
C) WHAT WE ARE DEALING WITH (I recommend that you read this before :D
D) FIRST APPROACH (The Alternate way)
E) SECOND APPROACH (Script Cracking!)
F) ADDON (Common InstallSHIELD Installation)
G) WIN32.HLP (Disscriptions that will help you)
H) LAST WORDS (Maybe ya dont need to read this)
I) GREETINGS (Don´t miss this Part, hehe!)
__________________________
A) INTRODUCTION
Welcome to my first Cracking Tutorial... I will try to write more
Essays and Tutorials in the Future.
I could have made more in the past, but i was afraid that anybody could read
my BAD English ;) so please excuse me and just try to follow me below.
LEVEL :
Well, I will try to give you all Informations and document all my Steps
and Listings, so maybe also a Beginner will be able to understand this
Tutorial (maybe ;).
TARGET : Our Target is Cakewalk HomeStudio from Twelve Tone Systems ,
The compressed File size (only really necessary parts) is
only 536 KB
PROTECTION : This Application has 3 Protection layers.
1.CD-CHECK
2.CD-KEY
3.SERIAL
__________________________
B) TOOLS YOU NEED
You will need the following Tools:
- SoftICE 3.x from Numega
(The best Debugger. Big Thanx to Numega)
- W32Dasm 8.9 from URSoft
(I love References) )
- Hex-Workshop or any other Hex-Editor
(Yeah, gimme the Bytes location)
- Icompx the InstallSHIELD de/compressor
(Thanx to Lord Caligo that has put it on his Page)
- A Wodka-Martini if you are a +Cracker and/or a cigarette ;)
You can get most tools from Lord Caligo´s Web-Page.
One of the best Cracking Resource i have ever seen!
http://cracking.home.ml.org/
__________________________
C) WHAT ARE WE DEALING WITH
After unzipping into C:/TEMP, we get the following ones:
_SETUP.LIB 151 KB
SETUP.EXE 659 KB
_SETUP.DLL 5,98 KB
SETUP.INS 89,5 KB
SETUP.PKG Not important
(There are a lot more files in the complete App, I got a
stripped one)
Let me first explain what we have here.
These are the typical Files from a InstallSHIELD Installation.
_SETUP.LIB is a compressed Data-Base from InstallSHIELD.
It can contain exe´s and dll´s supporting the Installation.
Sometimes these Support Files are in the same dir like SETUP.EXE
(unlikely), but in our case they are compressed into _SETUP.LIB
(You will see and understand later).
What I didn't get was the compressed Data-Base Files (xxx.1-x,xxx.z)
containing the App Files and so they can be very big ;).
Don´t mind it, because we dont need them anyway for cracking.
A compressed Data-Base File allways begins with "13 5D 65 8C 3A 01 02 00",
so if you cant find any xxx.z or xxx.1-x then just look for these bytes.
At the End of every compressed Data-Base File you can see all the File Names,
by the way.
SETUP.PKG contains all the File-Names in the App Data-Base which we
dont need and so we dont need SETUP.PKG either.
InstallSHIELD uses SETUP.PKG to refer the Files in the App Data-Base in
the copying process i believe. Anyway, we dont need it, so lets go on.
_SETUP.DLL is a InstallSHIELD Resource DLL and its not important for
us, because its only a Support File which is supplied with any
InstallSHIELD Installation.
SETUP.INS is the compiled Installation Script and its the most important
Part in a InstallSHILED Installation Process!
In Win95 it has got a globe connected to a phone as icon.
This File Controls any Action and has got most of the messages of the
Installation and it will play a major Role in our SECOND APPROACH.
SETUP.EXE is the head of all, it is the Installation Engine and
executes the Script and does all calls to DLL´s and Disk-Access (32 Bit!).
So far so good, now we know a lot more about InstallSHIELD =)
Lets start with the....
__________________________
D) FIRST APPROACH
(CD-CHECK)
ASSUMPTION : I assume the following things under SoftICE :
F5="^x;"
F7="^here;"
F8="^t;"
F9="^bpx;"
F10="^p;"
F11="^G @SS:ESP;"
F12="^p ret;"
Also the winice.dat File in your SoftICE dir should contain :
EXP=c:\windows\system\kernel32.dll
EXP=c:\windows\system\user32.dll
HINT : "*" in Front of the Text coming up means, that the text into
brackets must be typed under SoftICE!
START : Ok, now lets get to business and start cracking.
First we just start the Istallation (SETUP.EXE) and see whats happening.
Well, a MessageBox tells us, that "Setup must be run from the original CD".
Our next logical step now should be setting a Breakpoint on
GetDriveTypeA ("A" coz SETUP.EXE is a 32 Bit App).
Have a look at part G) WIN32.HLP of this tutorial to get more info
about GetDriveType!
* We press Crtl+D and SoftICE pops up and then we type in
"BPX GetDriveTypeA"
* Pressing "Crtl+D" ("F5") gets us back to Windows, where we start
Setup.exe again.
Ok, we are in SoftICE before the MessageBox appears.
We are in the Kernel32 at GetDriveTypeA, so lets get out of here
* by pressing "F11" one time. And now we are in INSHELP, damn! whats
that ? It wasnt in our dir !!
* Well i typed in "MOD INSHELP" to get more info about this file
and SoftICE shows me, that its located in :
C:\TEMP\_ISTMP0.DIR\INSHELP.DLL
Now we see that it´s a DLL and that IstallSHIELD has created a
Temporary directory called _ISTMP0.DIR and then it puts the file
INSHELP.DLL in there.
But where does this File come from ?
Ok, maybe you dont have forgotten what i told you in C) about
compressed Data-Bases ? Yes ? Then you should read it again now!
So this DLL must be in _SETUP.LIB, but how should we patch it ?
Well we got ICOMPX the InstallSHIELD de/compressor ;)
Let´s decompress _SETUP.LIB ("ICOMP _SETUP.LIB *.* -d -i")
These Files we will get :
INSHELP.DLL
UNINST.EXE
_ISRES.DLL
The last two files are only support Files and not important for us.
What we know now is that INSHELP.DLL makes the CD-CHECK and that it is
in _SETUP.LIB which we can decompress and then compress again.
By the way you may just type in "ICOMP" to get the full usage.
Now that we got all infos about this File and how to patch it lets
go on with SoftICE´ing ;).
We are still in INSHELP.DLL, so let me give you the listing first :
Your adresses may differ in the first four diggits ! (relocation)
And SoftICE pops up at 100011A0 (0) , so go there now!
DWORD TABLE:
:10001308 BA120010 DWORD 100012BA These are the DWORDS for the indirect jmps
:1000130C C7120010 DWORD 100012C7 I have place them here coz it will be
:10001310 D4120010 DWORD 100012D4 easier for you to follow me ;)
:10001314 E1120010 DWORD 100012E1
:10001318 EE120010 DWORD 100012EE
:1000131C B0110010 DWORD 100011B0
:10001320 FB120010 DWORD 100012FB
Start of this routine:
:10001160 81ECE8020000 sub esp, 000002E8 Create a temporary Stack-Frame
:10001166 B9FFFFFFFF mov ecx, FFFFFFFF ecx=FFFFFFFF (counter)
:1000116B 2BC0 sub eax, eax eax=0
:1000116D 56 push esi Save esi
:1000116E 57 push edi Save edi
:1000116F 8BBC24F4020000 mov edi, [esp + 000002F4] edi points to "C:\TEMP\"
:10001176 F2 repnz
:10001177 AE scasb Scan String for 0 (end)
:10001178 F7D1 not ecx ecx=lenght+1=9
:1000117A 2BF9 sub edi, ecx Adjust edi back
:1000117C 8BC1 mov eax, ecx Save lenght in eax
:1000117E C1E902 shr ecx, 02 Divide lenght by 4 =2
:10001181 8BF7 mov esi, edi esi=edi=ptr to "C:\TEMP\"
:10001183 8D7C2448 lea edi, [esp + 48] <------| edi="ptr" to [esp+48] :10001187 F3 repz | :10001188 A5 movsd | Copy "C:\TEMP\" to *edi :10001189 8BC8 mov ecx, eax | ecx="eax=lenght" :1000118B 83E103 and ecx, 00000003 | ecx="mod" 9/4="1" :1000118E F3 repz | :1000118F A4 movsb | Copy last byte(s) :10001190 C644244B00 mov [esp + 4B], 00 |------- "C:\TEMP\" :10001195 8D4C2448 lea ecx, [esp + 48] <------ "C:\"="RootPathName" :10001199 51 push ecx Handle it to GetDriveTypeA * Reference To: KERNEL32.GetDriveTypeA, Ord:00CEh | :1000119A FF15E0900010 Call dword ptr [100090E0] This calls GetDriveTypeA (return: eax="Type)" :100011A0 83F806 cmp eax, 00000006 <------ (0) SoftICE breaks in here ! :100011A3 0F8704010000 ja 100012AD (1) :100011A9 FF248508130010 jmp dword ptr [4*eax + 10001308] (2) :100011B0 8D442414 lea eax, [esp + 14] (3) :100011B4 6A32 push 00000032 FileSystemNameSize :100011B6 8D4C2414 lea ecx, [esp + 14] :100011BA 50 push eax lpFileSystemNameBuffer :100011BB 8D542414 lea edx, [esp + 14] :100011BF 51 push ecx lpFileSystemFlags :100011C0 8D442414 lea eax, [esp + 14] :100011C4 52 push edx lpMaximumComponentLength :100011C5 8D8C2420010000 lea ecx, [esp + 00000120] :100011CC 50 push eax lpVolumeSerialNumber :100011CD 8D54245C lea edx, [esp + 5C] :100011D1 68C8000000 push 000000C8 VolumeNameSize :100011D6 51 push ecx lpVolumeNameBuffer :100011D7 52 push edx lpRootPathName ("C:\") Ok, we are right after the GetDrivetypeA call. Let us first figure out what will happen if we trace further. (1) This conditional jmp will never happen if i can trust on the Description of GetDriveType. (2) My eax is 3 (Hard-Disk) so this ptr will be 3*4+10001308="10001314" so this jmp would lead us to 100012E1 (see the DWORD TABLE above !) :100012E1 33C0 xor eax, eax Set eax to 0 :100012E3 5F pop edi Restore edi from stack :100012E4 5E pop esi Restore esi from stack :100012E5 81C4E8020000 add esp, 000002E8 Delete temporary Stack-Frame :100012EB C20400 ret 0004 return Well it seems that EAX="0" stands for BAD BOY ;) Cracking this CD-CHECK could end here just by patching the instructions at the Start of this routine (10001160)... Original: :10001160 81ECE8020000 sub esp, 000002E8 Create a temporary Stack-Frame :10001166 B9FFFFFFFF mov ecx, FFFFFFFF ecx="FFFFFFFF" :1000116B 2BC0 sub eax, eax eax="0" :1000116D 56 push esi Save esi :1000116E 57 push edi Save edi Change to: :10001160 33C0 xor eax,eax eax="0" :10001162 40 inc eax eax="eax+1=1" GOOD BOY :10001163 C20400 ret 0004 Return Search for "81ECE8020000" in INSHELP.DLL with your Hex-Editor. You will only find one location (Offset 560). Replace the bytes with "33C040C20400" and save it. Ok, and now compress it back into _SETUP.LIB. Just type in "icomp inshelp.dll _setup.lib" and dont delete INSHELP.DLL, because we will need it again later ;) Do you want to know what this CD-CHECK would do further on ? If not just go over to the (CD-KEY) Section below! Hmmm, so you wanna learn more about CD-CHECKS ;) OK * What we do now is setting eax to 5 by typping in "r eax="5"" then the jmp will bring us to dptr[5*4+10001308]="dptr[1000131C]=100011B0" which means we are right after the jmp itself ! at (3) The instructions after (3) just pushes all the infos for the GetVolumeInformationA call at 100011D8. * Reference To: KERNEL32.GetVolumeInformationA, Ord:013Ah | :100011D8 FF15DC900010 Call dword ptr [100090DC] This calls GetVolumeInformation :100011DE 85C0 test eax, eax Do we got all infos? :100011E0 0F8481000000 je 10001267 (4) if yes goto 10001267 :100011E6 8D842410010000 lea eax, [esp + 00000110] Volume Name ("HD_C") * Possible StringData Ref from Data Obj>"CWHS_601"
|
:100011ED B938600010 mov ecx, 10006038
* Referenced by a Jump at Address:1000120C(C)
|
:100011F2 8A10 mov dl, [eax] Here it compares my Volume Name "HD_C"
:100011F4 3A11 cmp dl, [ecx] with "CWHS_601"
:100011F6 751A jne 10001212 (5) Bad jmp !
:100011F8 0AD2 or dl, dl
:100011FA 7412 je 1000120E
:100011FC 8A5001 mov dl, [eax+01]
:100011FF 3A5101 cmp dl, [ecx+01]
:10001202 750E jne 10001212 (5) Bad jmp !
:10001204 83C002 add eax, 00000002
:10001207 83C102 add ecx, 00000002
:1000120A 0AD2 or dl, dl
:1000120C 75E4 jne 100011F2
* Referenced by a Jump at Address:100011FA(C)
|
:1000120E 33C0 xor eax, eax All OK !
:10001210 EB05 jmp 10001217
To continue our tracing session you have to nop out the Bad jmps !
* Trace to the jmps "F10" and then "a" with two "nop"´s.
(4) This jmp will only occure if Setup is running from the original CD-Rom.
It then just bypasses the Volume and Filetype Check.
I also suggest that you read part F) of this Tutorial to get more and
detailed infos about GetVolumeInformation (FileSytemFlags) !!
Ok, now comes the part the (5) Bad jmps will jump to....
* Referenced by a Jump at Addresses:100011F6(C), :10001202(C)
|
:10001212 1BC0 sbb eax, eax eax=0
:10001214 83D8FF sbb eax, FFFFFFFF eax=1
* Referenced by a Jump at Address:10001210(U)
|
:10001217 85C0 test eax, eax if eax=0 then
:10001219 740D je 10001228 goto 10001228 GOOD BOY !
:1000121B 33C0 xor eax, eax otherwise return
:1000121D 5F pop edi with eax=0 BAD BOY !
:1000121E 5E pop esi
:1000121F 81C4E8020000 add esp, 000002E8
:10001225 C20400 ret 0004
* Referenced by a Jump at Address:10001219(C)
|
:10001228 8D4C2414 lea ecx, [esp + 14] ecx points to my File System Name "FAT"
* Possible StringData Ref from Data Obj ->"CDFS"
|
:1000122C B848600010 mov eax, 10006048
* Referenced by a Jump at Address:1000124B(C)
|
:10001231 8A11 mov dl, [ecx] here my File System Name "FAT"
:10001233 3A10 cmp dl, [eax] will be compared with "CDFS" !
:10001235 751A jne 10001251 (6) Bad jmp !
:10001237 0AD2 or dl, dl
:10001239 7412 je 1000124D
:1000123B 8A5101 mov dl, [ecx+01]
:1000123E 3A5001 cmp dl, [eax+01]
:10001241 750E jne 10001251 (6) Bad jmp !
:10001243 83C102 add ecx, 00000002
:10001246 83C002 add eax, 00000002
:10001249 0AD2 or dl, dl
:1000124B 75E4 jne 10001231
* Referenced by a Jump at Address:10001239(C)
|
:1000124D 33C0 xor eax, eax All OK !
:1000124F EB05 jmp 10001256
Again we have to nop out the (6) Bad jmps to continue !!
Otherwise we will land here...(10001251) BAD BOY
* Referenced by a Jump at Addresses:10001235(C), :10001241(C)
|
:10001251 1BC0 sbb eax, eax Old soup, look back (10001212) !
:10001253 83D8FF sbb eax, FFFFFFFF
* Referenced by a Jump at Address:1000124F(U)
|
:10001256 85C0 test eax, eax
:10001258 740D je 10001267 GOOD BOYS jmps to 10001267
:1000125A 33C0 xor eax, eax
:1000125C 5F pop edi
:1000125D 5E pop esi
:1000125E 81C4E8020000 add esp, 000002E8
:10001264 C20400 ret 0004
* Referenced by a Jump at Addresses:100011E0(C), :10001258(C)
|
:10001267 8A442448 mov al , [esp + 48] al=Drive Letter "C" 43h
:1000126B 8D8C24D8010000 lea ecx, [esp + 000001D8]
:10001272 51 push ecx
:10001273 A250600010 mov [10006050], al
^----------------------------"X:\Cakewalk\_setup.lib"
* Possible StringData Ref from Data Obj ->"C:\Cakewalk\_setup.lib"
|
:10001278 6850600010 push 10006050
:1000127D E8EE010000 call 10001470 In this Sub it will call FindFirstFileA
:10001282 83C408 add esp, 00000008 to look for "_setup.lib"
:10001285 83F8FF cmp eax, FFFFFFFF in "C:\Cakewalk\" directory
:10001288 750D jne 10001297 (7) Well it wont find it there and so it will
:1000128A 33C0 xor eax, eax return with eax=FFFFFFFF
:1000128C 5F pop edi
:1000128D 5E pop esi
:1000128E 81C4E8020000 add esp, 000002E8
:10001294 C20400 ret 0004
(7) Change it to "jmp 10001297" or "je 10001297" to continue!
* Referenced by a Jump at Address:10001288(C)
|
:10001297 E894FDFFFF call 10001030 (8) In this Sub eax will just be
:1000129C 5F pop edi set to 1 GOOD BOY ;)
:1000129D 83F801 cmp eax, 00000001 if eax was wasnt 1 this
:100012A0 1BC0 sbb eax, eax sub will turn eax to
:100012A2 5E pop esi FFFFFFFF and the inc
:100012A3 40 inc eax finally will make it 0 BAD BOY !
:100012A4 81C4E8020000 add esp, 000002E8
:100012AA C20400 ret 0004
(8) Here the call will go to...
:10001030 A130600010 mov eax, [10006030] eax=dword at [10006030]
:10001035 C3 ret Return
Setup calls a Sub in INSHELP while initialisation, which sets the
dword [10006030] to 1!
OK, we just have learned something more about CD-Protections under
Windows95 ;)
- INSHELP first checks if setup is running from a CD-ROM.
- Then it checks the Volume Name and the File System.
- And at least it just checks for a specific File "setup.lib".
- After all INSHELP will return "1" for OK and "0" for Error!
This CD-CHECK is defeated, now lets face the....
(CD-KEY)
Ok, the MessageBox never appears now, we get a Welcome Window instead ;)
We get an Edit area and a Text telling us to enter the 13 digit CD-KEY, brbrb.
We type in "1234567890123" and then i set a Breakpoint on
* GetWindowTextA : "BPX GetWindowTextA".
After pressing the NEXT-> Button SoftICE pops up, this is easy hehe ;)
* We are in GetWindowTextA so lets get back to the App and press "F11".
I looked at EAX, because it allways contains the Text lenght
GetWindowTextA returns,
but hell!! this isnt the lengh of my Text and so this cannot be my Text =(, brb.
Dont worry, this is just a little trick to prevent Beginners to crack it.
There are lotta other App out there using this trick btw !
Setup uses GetWindowTextA to retrieves our input, but it does not wait
for the user pressing NEXT->, it just gets the text anytime we type in
a single letter,
* so lets first disable our Breakpoint : "BD 0",
and then we type in "12345678901234" and then we enable our Breakpoint:
* "BE 0".(dont forget to leave SoftICE)
So, now comes the truth. I just deleted the last number with back-space
and BOOM! yeah we are in GetWindowTextA again so lets leave here
* again by pressing "F11".
Well, this looks much better, because EAX=0D=13, yeah our Key-lenght ;)
We are in Setup by the way. Right after the Call GetWindowTextA
there is a "LEA EAX,[EBP+FFFFFBF4]" which will let EAX points to our Text,
* so trace over it with "F8" or "F10".
* Do a "D EAX" and you will see our text "1234567890123" !!
* ok lets delete our Breakpoint, because we got what we wanted : "BC *".
And now we set a Breakpoint on Memory Access on our text loaction :
* "BPM EAX". Ok, exit SoftICE and it will fast pop up again.
SoftICE will break into different locations, but the one that is important
for us is the lstrcpyA.
You will land in there at the following instructions :
... ............
REPNZ SCASB SoftICE will break in here!
NOT ECX
MOV ESI,[EBP+0C] This is our old location
MOV EDI,[EBP+08] This will be our new location
... ............
So, if you see these instructions you can delete your old breakpoint,
* trace over the 2 MOVS with "F8" and then set a new Breakpoint on EDI:
* "BPM EDI". Otherwise just leave SoftICE until you are back in the
Installation Window. Press NEXT-> and you will break into lstrcpyA
several times again, but now dont delete the old Breakpoints,
just set the new ones on EDI after the 2 MOVS like before,
until you are in INSHELP!! yeah its the same dll ;).
Let me give you the listing first and consider again that the first
four digits of the adresses may differ from yours under SoftICE (relocation).
SoftICE will break in at 10001377!
Start of this routine:
:10001350 83EC34 sub esp, 00000034 Create a temporary Stack-Frame
:10001353 53 push ebx Save ebx
:10001354 56 push esi Save esi
:10001355 57 push edi Save edi
:10001356 E8D5FCFFFF call 10001030 Was this routine initialysed ?
:1000135B 85C0 test eax, eax Check ok ? (It will be)
:1000135D 750B jne 1000136A then goto 1000136A, else
:1000135F 33C0 xor eax, eax Set eax=0 BAD BOY!
:10001361 5F pop edi Restore edi
:10001362 5E pop esi Restore esi
:10001363 5B pop ebx Restore ebx
:10001364 83C434 add esp, 00000034 Delete temporary Stack-Frame
:10001367 C20400 ret 0004 Return
Well it seems that EAX=0 stands for BAD BOY again like in the CD-Check!
Cracking this CD-KEY could end here just by patching the instructions
at the Start of this routine (10001350)...
Dont patch it yet, if you wanna learn how to reverse ingineer this
KEY-Protection!!
Original:
:10001350 83EC34 sub esp, 00000034 Create a temporary Stack-Frame
:10001353 53 push ebx Save ebx
:10001354 56 push esi Save esi
:10001355 57 push edi Save edi
:10001356 E8D5FCFFFF call 10001030 Was this routine initialysed ?
Change to:
:10001350 33C0 xor eax,eax eax=0
:10001352 40 inc eax eax=eax+1=1 GOOD BOY
:10001353 C20400 ret 0004 Return
Search for "83EC34535657" in INSHELP.DLL with your Hex-Editor.
You will only find one location (Offset 750).
Replace the bytes with "33C040C20400" and save it.
Ok, and now compress it back into _SETUP.LIB.
Just type in "icomp inshelp.dll _setup.lib" and dont delete INSHELP.DLL,
because we will need it again later ;)
And now any KEY you type in will be valid, cool heh =)
Do you wanna learn how to reverse this CD-KEY Protection ?
If not just go over to the (SERIAL) Section below!
Ok, lets go on with this routine...
* Referenced by a Jump at Address:1000135D(C)
|
:1000136A 8B5C2444 mov ebx, [esp + 44] ebx will point to our KEY !
:1000136E 8D4C240C lea ecx, [esp + 0C] ecx will be the new location
:10001372 8BC3 mov eax, ebx eax=ebx=pointer to our KEY
:10001374 803B00 cmp byte ptr [ebx], 00 (9) KEY=NULL ?
:10001377 741B je 10001394 <------ SoftICE will break in here!! (9) Check if our KEY is emty, if yes goto 10001394 * Referenced by a Jump at Address:10001392(C) | :10001379 8A10 mov dl, [eax] (10) Get a char from our KEY :1000137B 0FBEF2 movsx byte ptr esi, edx esi="dl=the" char :1000137E 83FE30 cmp esi, 00000030 Compare char with "0" :10001381 7C05 jl 10001388 If lower goto 10001388, else :10001383 83FE39 cmp esi, 00000039 Compare char with "9" :10001386 7E03 jle 1000138B If lower,equal then goto 1000138B * Referenced by a Jump at Address:10001381(C) | :10001388 40 inc eax Increment char pointer :10001389 EB04 jmp 1000138F goto 1000138F * Referenced by a Jump at Address:10001386(C) | :1000138B 8811 mov [ecx], dl (11) Store number in new location :1000138D 40 inc eax Increment char pointer :1000138E 41 inc ecx Increment loacation pointer * Referenced by a Jump at Address:10001389(U) | :1000138F 803800 cmp byte ptr [eax], 00 End of KEY ? :10001392 75E5 jne 10001379 If not then goto 10001379 (10) This piece of code "will.class" tppabs="http://Fravia.org/will.class" retrieve only numbers from our KEY and then it (11) stores them at the new location, so if you typed in "1234a67b89" the new location will contain only "12346789" consider this !! * Referenced by a Jump at Address:10001377(C) | :10001394 8D7C240C lea edi, [esp + 0C] (12) edi will point to our KEY :10001398 2BC0 sub eax, eax Set eax="0" :1000139A C60100 mov byte ptr [ecx], 00 Teminate KEY with 0 :1000139D B9FFFFFFFF mov ecx, FFFFFFFF Set counter ecx to FFFFFFFF :100013A2 F2 repnz :100013A3 AE scasb Scan KEY for "0"="End" :100013A4 F7D1 not ecx :100013A6 49 dec ecx ecx="KEY" length :100013A7 83F90D cmp ecx, 0000000D (13) KEY length="13" diggits ? :100013AA 740B je 100013B7 If yes goto 100013B7, else :100013AC 33C0 xor eax, eax BAD BOY! :100013AE 5F pop edi :100013AF 5E pop esi :100013B0 5B pop ebx :100013B1 83C434 add esp, 00000034 :100013B4 C20400 ret 0004 (12) This part calculates our KEY length and then it checks if it is (13) 13 (0Dh) diggits long. If not it will return with eax="0" BAD BOY! * Referenced by a Jump at Address:100013AA(C) | :100013B7 8D44240C lea eax, [esp + 0C] eax points to the KEY at [esp+0C] :100013BB 50 push eax Handle it to Sub :100013BC E87F000000 call 10001440 (14) Generate code :100013C1 3D377B0E00 cmp eax, 000E7B37 (15) Compare code with E7B37 :100013C6 7565 jne 1000142D If not equal then goto 1000142D BAD BOY ! :100013C8 0FBE4C240C movsx byte ptr ecx, [esp + 0C] (16) ecx="1." number from KEY :100013CD 8D1489 lea edx, [ecx + 4*ecx] edx="ecx*5" :100013D0 0FBE44240F movsx byte ptr eax, [esp + 0F] eax="4." number from KEY :100013D5 8D0C50 lea ecx, [eax + 2*edx] ecx="edx*2+eax" :100013D8 8D1489 lea edx, [ecx + 4*ecx] edx="ecx*5" :100013DB 0FBE442410 movsx byte ptr eax, [esp + 10] eax="5." number from KEY :100013E0 8D0C50 lea ecx, [eax + 2*edx] ecx="edx*2+eax" :100013E3 8D1489 lea edx, [ecx + 4*ecx] edx="ecx*5" :100013E6 0FBE442411 movsx byte ptr eax, [esp + 11] eax="6." number from KEY :100013EB 8D0C50 lea ecx, [eax + 2*edx] ecx="edx*2+eax" :100013EE 2B0D54610010 sub ecx, [10006154] (17) Sub App-ID (E11) :100013F4 81F950D00000 cmp ecx, 0000D050 (18) Compare with D050 :100013FA 7531 jne 1000142D If not equal then goto 1000142D BAD BOY :100013FC 8D7C240C lea edi, [esp + 0C] (19) edi points to the KEY :10001400 B9FFFFFFFF mov ecx, FFFFFFFF Set counter to FFFFFFFF :10001405 2BC0 sub eax, eax Set eax="0" :10001407 F2 repnz :10001408 AE scasb Scan KEY for "0"="End" :10001409 F7D1 not ecx ecx="KEY" length+1 :1000140B 2BF9 sub edi, ecx Adjust edi back :1000140D 8BC1 mov eax, ecx eax="ecx" :1000140F C1E902 shr ecx, 02 ecx="ecx/4=3" :10001412 8BF7 mov esi, edi esi points to the KEY :10001414 8BFB mov edi, ebx edi="old" location of KEY :10001416 F3 repz :10001417 A5 movsd Copy KEY to old location :10001418 8BC8 mov ecx, eax ecx="KEY" length :1000141A 83E103 and ecx, 00000003 ecx="mod" ecx/4="1" :1000141D F3 repz :1000141E A4 movsb Copy last byte(s) :1000141F B801000000 mov eax, 00000001 eax="1" GOOD BOY! :10001424 5F pop edi :10001425 5E pop esi :10001426 5B pop ebx :10001427 83C434 add esp, 00000034 :1000142A C20400 ret 0004 * Referenced by a Jump at Addresses:100013C6(C), :100013FA(C) | :1000142D 33C0 xor eax, eax (20) eax="0" BAD BOY! :1000142F 5F pop edi :10001430 5E pop esi :10001431 5B pop ebx :10001432 83C434 add esp, 00000034 :10001435 C20400 ret 0004 To reverse engineer a KEY-Check i start at the end of the routine. I mean where the final check occures!. This will happen at line (18) 100013F4. Here ecx must be D050. Now lets go back to the previous line. Here ecx will be subtracted by E11 the App-ID, this means ecx must be D050+E11="DE61" at this point!! Now let us see what the instructions at (16) does ! Well, let me first extract the few lines from 100013C8 100013EB into a more comfortable format for you : (1000,100 and 10 are in decimal ; numbers are in asc-II!) ecx="(" ( (1. number) * 10 + 4. number ) * 10 ) + 5. number ) * 10 ) + 6. number After simplification we get : ecx="1." number * 1000 + 4. number *100 + 5. number *10 + 6. number Hmm, now we know how ecx is calculated, but whats D050 ? Well, if we typed in "0"="48=30h" as our 1.,4.,5. and 6. number, then we will get : ecx="30h" * 1000d + 30h * 100d + 30h * 10d + 30h="D050!" And now consider that E11 h="3601" d="3" * 1000d + 6 * 100d + 0 * 10d + 1! Now guess what our 4 numbers are ;)! Yes, thats right... the 1st number must be 3! the 4th number must be 6! the 5th number must be 0! and the 6th number must be 1! So our KEY is build like this "3xx601xxxxxxx" ,hehe! Ok, lets look back before (16) (14) This will call a sub at 10001440 which will calculate a code with our KEY. (15) This code will be compared with E7B37! If this compare fails we will land at (20) 1000142D BAD BOY! Let us first examine the sub which generates the code... :10001440 56 push esi Save esi :10001441 33D2 xor edx, edx edx="0" :10001443 57 push edi Save edi :10001444 33C9 xor ecx, ecx ecx="0," this will be our char position counter :10001446 8B74240C mov esi, [esp + 0C] esi will point to our KEY :1000144A 380E cmp [esi], cl Is the KEY emty ? :1000144C 7419 je 10001467 If yes goto 10001467 and return with code="0.html" * Referenced by a Jump at Address:10001465(C) | :1000144E C1E206 shl edx, 06 (21) edx="edx*2^6=edx*64d=edx*40h" :10001451 BFE1D61200 mov edi, 0012D6E1 edi="12D6E1" :10001456 0FBE040E movsx byte ptr eax, [esi + ecx] (22) get next number from our KEY :1000145A 03C2 add eax, edx eax="eax+edx" :1000145C 41 inc ecx ecx="ecx+1," counter +1 :1000145D 2BD2 sub edx, edx edx="0" :1000145F F7F7 div edi (23) eax="eax/edi," edx="mod" (eax/edi) :10001461 803C0E00 cmp byte ptr [esi + ecx], 00 Reach end of KEY ? :10001465 75E7 jne 1000144E If not goto 1000144E * Referenced by a Jump at Address:1000144C(C) | :10001467 8BC2 mov eax, edx (24) eax="edx," the code! :10001469 5F pop edi Restore edi :1000146A 5E pop esi Restore esi :1000146B C20400 ret 0004 return To reverse this sub we must start at the end of it at line 10001467 (24)! eax="edx" is the code and it must be E7B37 (15)! (23) Here we see that E7B37 is mod (eax/edi)="mod" (eax/12D6E1) (22) Well, this is shit!, because we will loose information (eax) by each loop. What we know is that eax will be clipped after every 4 number, because... 30*40*40*40+30*40*40+30*40+30="C30C30"> 12D6E1
Thus we can set a seed KEY "3xx6x1yyyyyyy", where x can be any number and
y will be the corrections.First go back to Setup and choice a seed KEY!
I used for example "3006010000000".
To get a valid KEY let us Brute-Force-Crack this babe =)
Its not the best way, but this code generating part is short, thus
it will be executed fast.
Trace to the location at line 100013C1 (15) where the code will be
compared with E7B37.
Trace over it to the next line 100013C6 and then we have to code a
little procedure.
* EBX is unused, so we will use it as counter. Type in "r ebx=0".
* Now type in "a" and let us add a little procedure, which will find
a valid KEY for us.
Please adjust the adresses yourself, since this will be typed directly
into memory!
* "JNZ GO_ON" Not a valid KEY, goto GO_ON
* FOUND&FAIL: "NOP" This will be our Stop Point
* GO_ON: "CMP EBX,1312CFF" Check only numbers from 0-19999999!
* "JZ FAIL" Yes, goto FAIL
* "MOV ESI,[ESP+C]" ESI points to our KEY
* "MOV EAX,EBX" EAX=EBX
* "MOV ECX,A" ECX=A=10d
* CONVERT_DEC: "XOR EDX,EDX" EDX=0
* "DIV ECX" EAX=EAX/ECX, EDX=MOD (EAX/ECX)
* "ADD DL,30" EDX=EDX+"0"
* "MOV [ESI+C],DL" STORE NUMBER INTO KEY
* "DEC ESI" ESI will point to the previous number
* "CMP EAX,0" Conversion completed ?
* "JNZ CONVERT_DEC" If not goto CONVERT_DEC
* "JMP 100013B7" Check this KEY !
The comparision at GO_ON makes sure that the App-ID will not be manipulated !!
* Ok, you typed in all this mess ;) Now you must clear all Break-Points "BC *"
* and then set a Break-Point on execution on line FOUND&FAIL!!
"BPX ".
Now leave SoftICE and wait.....
SoftICE will pop up at FOUND&FAIL, so first check EAX, it should be E7B37!
* If yes, you can get your KEY with "D [ESP+C]".
I have found "3006010147046" for my seed KEY ,btw =)
* To get out of this Loop set your EIP to 1000142D "r eip=1000142D" and clear all
Break-Points!
Then leave SoftICE, and you will be back in Setup. Cancel it and then start it again
and use your valid KEY!
Let's summarize:
- KEY must contain 13 numbers.
- KEY has got 4 fixed numbers "3xx601yyyyyyy".
Its the App-ID (3601), which may differ in other
App from Twelve Tone Systems. Setup handles this App-ID to
INSHELP before he calls it.
- yyyyyyy can be found with Brute-Force-Cracking.
This Protection is defeated, lets go over to the...
(SERIAL)
Well, the KEY was a little bit tricky, heh ? Anyway you are here now to face
the Serial!
Setup asks for a User-Name, Company and Serial, so lets type in sum crap.
I typed in "NaTzGUL" as User-Name, "REVOLT" as Company and "1234567890" as Serial.
Please proceed with the Serial like in the KEY Section!!
You will land into Setup!, damn the Script is doing the Check, brbrb!
I gave up! There are just too many push,pop and calls, believe me, else try it out!
To defeat this Protection we need a new method!
__________________________
E) SECOND APPROACH
ASSUMPTION:
I assume that you have read the first Approach and that the App (INSHELP) is
now once more unpatched in any way !
Original state ! You may uncompress the whole App again !
INTRO: Zen! yeah, thats what we need =)
As i told you in our first approach SETUP.INS is the main part of an
InstallSHIELD Installation!
SETUP.INS is a compiled Script, this means before compilation it may have
the following basic instructions :
- "IF,THEN,(ELSE)"
- "GOTO"
- "CALL"
- "RETURN()"
- "LOAD","OPEN","CLOSE"
- "MESSAGEBOX"
- etc.
To decrypt the whole mnemonic back to its instructions is not
necessary to crack this app,
so i though that the most important instruction should be
the "IF,THEN" one. It should occure very
often in the Script and it may have the following syntax :
IF cmp THEN....
cmp = (arg1) compare_type (arg2)
arg1 is a variable, arg2 can be a variable or a constant
(two constants makes no sense ,of coz !).
the compare_type can only be one of these six types :
Type: Coresponding jmp:
LOWER-EQUAL JLE
GREATER-EQUAL JGE
LOWER JL
GREATER JG
NOT-EQUAL JNE
EQUAL JE
A compiled COMPARE instruction could look like this :
Compare_mnemonic,result,Byte_A, arg1 , Byte_B, compare_type, Byte_C, arg2
Byte_A is refering arg1, Byte_B gets the compare_type and Byte_C is referring arg2 and
also says if arg2 is a variable or constant.
You maybe have realised , that there are some mnemonic´s are missing.
As i mentioned this instruction should occure very often in
SETUP.INS, so i examined the file for this byte structure and me found out :
>>>>>> COMPARE mnemonic (actually 128)!
| | |
28,01,32,result_var,Byte_A, arg1 , Byte_B, compare_type, Byte_C, arg2
Byte_A="B"=0x42 means variable_index(word) is following
Byte_B="A"=0x41 means constant (dword) is following
Byte_C="A"=0x41 if comparing with a constant
Byte_C="B"=0x42 if comparing two viriables
result_var = type of word (variable_index)
arg1 = type of word (variable_index)
compare_type = type of dword (1-6)
arg2 = type of word (variable_index) or dword (constant)
Example : lets say we have found the following bytes .
28,01,32, 03,00, 42, 01,00, 41, compare_type, 42, 02,00
This will compare a variable with index 0x0001 and a varible with index 0x002
with the specific compare_type and then stores the result (0/1)
of this comparision into the variable with index 0x003.
Now what we need are the type of comparisions, hmm... how should we obtain them?
Setup is executing this Script, so there is the place we have to
search for them!
I W32dasm Setup.exe and searched for the place where compare_type
gets compared with 1-6 and i found them at line 0043C89B.
* Referenced by a Jump at Address:0043C89F(C)
|
:0043C7B2 8B45F4 mov eax, [ebp-0C] eax=arg1
:0043C7B5 3945F8 cmp [ebp-08], eax compare arg2 with arg1
:0043C7B8 0F8E0C000000 jle 0043C7CA lower-equal? compare_type_1!
:0043C7BE C745FC01000000 mov [ebp-04], 00000001 return result 1 in [ebp-4]
:0043C7C5 E907000000 jmp 0043C7D1 jmp to end
* Referenced by a Jump at Address:0043C7B8(C)
|
:0043C7CA C745FC00000000 mov [ebp-04], 00000000 return result 1 in [ebp-4]
* Referenced by a Jump at Address:0043C7C5(U)
|
:0043C7D1 E906010000 jmp 0043C8DC jmp to end
* Referenced by a Jump at Address:0043C8A9(C)
|
:0043C7D6 8B45F4 mov eax, [ebp-0C]
:0043C7D9 3945F8 cmp [ebp-08], eax
:0043C7DC 0F8D0C000000 jnl 0043C7EE greater-equal? compare_type_2!
:0043C7E2 C745FC01000000 mov [ebp-04], 00000001
:0043C7E9 E907000000 jmp 0043C7F5
* Referenced by a Jump at Address:0043C7DC(C)
|
:0043C7EE C745FC00000000 mov [ebp-04], 00000000
* Referenced by a Jump at Address:0043C7E9(U)
|
:0043C7F5 E9E2000000 jmp 0043C8DC
* Referenced by a Jump at Address:0043C8B3(C)
|
:0043C7FA 8B45F4 mov eax, [ebp-0C]
:0043C7FD 3945F8 cmp [ebp-08], eax
:0043C800 0F8C0C000000 jl 0043C812 ;lower? compare_type_3!
:0043C806 C745FC01000000 mov [ebp-04], 00000001
:0043C80D E907000000 jmp 0043C819
* Referenced by a Jump at Address:0043C800(C)
|
:0043C812 C745FC00000000 mov [ebp-04], 00000000
* Referenced by a Jump at Address:0043C80D(U)
|
:0043C819 E9BE000000 jmp 0043C8DC
* Referenced by a Jump at Address:0043C8BD(C)
|
:0043C81E 8B45F4 mov eax, [ebp-0C]
:0043C821 3945F8 cmp [ebp-08], eax
:0043C824 0F8F0C000000 jg 0043C836 ;greater ? compare_type_4!
:0043C82A C745FC01000000 mov [ebp-04], 00000001
:0043C831 E907000000 jmp 0043C83D
* Referenced by a Jump at Address:0043C824(C)
|
:0043C836 C745FC00000000 mov [ebp-04], 00000000
* Referenced by a Jump at Address:0043C831(U)
|
:0043C83D E99A000000 jmp 0043C8DC
* Referenced by a Jump at Address:0043C8C7(C)
|
:0043C842 8B45F4 mov eax, [ebp-0C]
:0043C845 3945F8 cmp [ebp-08], eax
:0043C848 0F850C000000 jne 0043C85A not-equal ? compare_type_5!
:0043C84E C745FC01000000 mov [ebp-04], 00000001
:0043C855 E907000000 jmp 0043C861
* Referenced by a Jump at Address:0043C848(C)
|
:0043C85A C745FC00000000 mov [ebp-04], 00000000
* Referenced by a Jump at Address:0043C855(U)
|
:0043C861 E976000000 jmp 0043C8DC
* Referenced by a Jump at Address:0043C8D1(C)
|
:0043C866 8B45F4 mov eax, [ebp-0C]
:0043C869 3945F8 cmp [ebp-08], eax
:0043C86C 0F840C000000 je 0043C87E ; equal ? compare_type_6!
:0043C872 C745FC01000000 mov [ebp-04], 00000001
:0043C879 E907000000 jmp 0043C885
* Referenced by a Jump at Address:0043C86C(C)
|
:0043C87E C745FC00000000 mov [ebp-04], 00000000
* Referenced by a Jump at Address:0043C879(U)
|
:0043C885 E952000000 jmp 0043C8DC
* Referenced by a Jump at Address:0043C8D7(U)
|
:0043C88A C745FC00000000 mov [ebp-04], 00000000
:0043C891 E946000000 jmp 0043C8DC
:0043C896 E941000000 jmp 0043C8DC
* Referenced by a Jump at Address:0043C7AD(U)
|
:0043C89B 837DEC01 cmp [ebp-14], 1 ; This is the entry point of the compare-part
:0043C89F 0F840DFFFFFF je 0043C7B2 and [ebp-14] will be the compare_type!
:0043C8A5 837DEC02 cmp [ebp-14], 2
:0043C8A9 0F8427FFFFFF je 0043C7D6
:0043C8AF 837DEC03 cmp [ebp-14], 3
:0043C8B3 0F8441FFFFFF je 0043C7FA
:0043C8B9 837DEC04 cmp [ebp-14], 4
:0043C8BD 0F845BFFFFFF je 0043C81E
:0043C8C3 837DEC05 cmp [ebp-14], 5
:0043C8C7 0F8475FFFFFF je 0043C842
:0043C8CD 837DEC06 cmp [ebp-14], 6
:0043C8D1 0F848FFFFFFF je 0043C866
:0043C8D7 E9AEFFFFFF jmp 0043C88A
Ok, let us summerize the compare_types :
Type: math.exp.: Coresponding jmp: Compare Type (dword):
LOWER-EQUAL <= JLE 1 GREATER-EQUAL>= JGE 2
LOWER JG 4
NOT-EQUAL != JNE 5
EQUAL = JE 6
MESSAGEBOX byte structure :
2A,0,61,length(word),text will show a messagebox with the specific text!
Since the compare part of an IF-THEN instruction is what we really need for our interest
you could now go directly to the START further below!
Otherwise learn more about other instructions and how they are build up =)
The structure of a compiled IF-THEN instruction may look like this :
COMPARE , BRANCH_TO location IF !(result - arg_x)
(result - arg_x) will be zero if they are equal else it will be not zero.
The result comes from the comparision and arg_x can be a varible or a constant.
Now we come to the IF-THEN byte structure :
COMPARE-structure,BRANCH_TO_mnemonic,l_index, SUB, Byte_A,result,Byte_C,arg_x
BRANCH_TO_mnemonic = 22,0,70
SUB = 95 (in an IF-THEN instruction!)
Byte_A="B"=0x42 result of comparision will allways be a variable_index
Byte_C="A"=0x41 arg_x allways will be a constant in an IF-THEN instruction!
l_index = type of word (index)
result = type of word (variable_index)
arg_x = will be a dword (constant) =0x00000000 in an IF-THEN instruction!
The branch location will be an offset into the script and it is calculated like this :
location = dword [ l_index* 6 + Branch-Table-Offset+2]
Location-Table-Offset = Offset "_EWQ" ;in this script it was 14546!
Just search for "_EWQ" and you will find it (Its linked at the end of the script)!
GOTO byte stucture :
2C,00,70,l_index
There are more instructions i have decrypted, but we dont need them
for this tutorial.
Its quite easy to write a Decompiler with this information and if
you have found out the location where Setup is executing the script
then its not that hard to see what it is doing depending on the mnemonic,
But thats another story and this tutorial is getting damn big enough!
Now we can try out our first Script-Cracking attempt =)...
START:
(CD-CHECK)
First think about how this check was written with the Script instructions !!
The easiest way may be done like this :
(Assume: Return_of_INSHELP=0/1 (BAD/GOOD)! )
arg1=CALL(INSHELP,CD-CHECK)
IF arg1 = 0 THEN MESSAGEBOX "Setup must be run from the original CD":END
ELSE RETURN(1)
or this...
arg1=CALL(INSHELP,CD-CHECK)
IF arg1 != 0 THEN RETURN(1)
ELSE MESSAGEBOX "Setup must be run from the original CD":RETURN(0)
After compiling this pice of code, the bytes would look like this :
28,01,32,"B",arg1 (word),"A",6 (dword),"A",0 (dword),...,2A,0,61,27 (word),"Setup must be..."
or this...
28,01,32,"B",arg1 (word),"A",5 (dword),"A",0 (dword),...,2A,0,61,27 (word),"Setup must be..."
I have retrieved this part of SETUP.INS for you....(Offset 8D70)
arg1_Variable_index (word) <<> compare_type_5!
result_Variable_index (word) <<< | | | IF mnemonic <<<<< | | | | | * | | | | | | | | 00008D70 9A FF 42 2D 00 28 01 32 2D 00 42 9B FF 41 05 00 ..B-.(.2-.B..A.. 00008D80 00 00 41 00 00 00 00 22 00 70 53 01 95 42 2D 00 ..A....".pS..B-. 00008D90 41 00 00 00 00 2A 00 61 27 00 53 65 74 75 70 20 A....*.a'.Setup 00008DA0 6D 75 73 74 20 62 65 20 72 75 6E 20 66 72 6F 6D must berun from 00008DB0 20 74 68 65 20 6F 72 69 67 69 6E 61 6C 20 43 44 theoriginal CD We see that its compare_type_5 (!=")," so we just have to change it into 6 (=")" at Offset 8D7E to defeat this CD-CHECK, isnt it easy ! BTW, if you are using the patched INSHELP, this change will reverse the result from INSHELP, so dont use the patched INSHELP!!!! (CD-KEY) I seeked SETUP.INS for the bytes 2A,0,61 and found the CD-KEY notification part at Offset 8FD0 8FD0 42 00 00 28 01 32 2E 00 42 2D 00 41 02 00 00 00 B..(.2..B-.A.... KEY-length !<0 ? 8FE0 41 00 00 00 00 22 00 70 5A 01 95 42 2E 00 41 00 A....".pZ.•B..A. 8FF0 00 00 00 21 00 32 99 FF 41 01 00 00 00 2C 00 70 ...!.2™ÿA....,.p 9000 5C 01 00 00 01 00 3A 00 41 00 00 00 00 00 00 00 \.....:.A....... 9010 00 00 00 01 00 2C 00 70 59 01 00 00 0B 00 19 01 .....,.pY....... 9020 32 97 FF 42 97 FF 41 01 00 00 00 B4 00 80 6D 00 2—ÿB—ÿA....´.€m. 9030 42 9A FF 21 00 32 2D 00 42 00 00 21 00 32 9B FF Bšÿ!.2-.B..!.2›ÿ 9040 42 2D 00 28 01 32 2D 00 42 9B FF 41 05 00 00 00 B-.(.2-.B›ÿA.... KEY-CHECK here !! 9050 41 00 00 00 00 22 00 70 61 01 95 42 2D 00 41 00 A....".pa.•B-.A. 9060 00 00 00 28 01 32 2E 00 42 97 FF 41 01 00 00 00 ...(.2..B—ÿA.... Tries <="6" times ? 9070 41 06 00 00 00 22 00 70 5E 01 95 42 2E 00 41 00 A....".p^.•B..A. if not display 9080 00 00 00 3A 00 41 00 00 00 00 2A 00 61 2B 00 50 ...:.A....*.a+.P | this and End. 9090 6C 65 61 73 65 20 65 6E 74 65 72 20 79 6F 75 72 lease enteryour | 90A0 20 43 44 2D 4B 65 79 20 74 6F 20 63 6F 6E 74 69 CD-Key toconti | 90B0 6E 75 65 20 73 65 74 75 70 2E 41 01 00 FF FF 2C nuesetup.A..ÿÿ, | 90C0 00 70 60 01 00 00 05 00 2A 00 61 38 00 59 6F 75 .p`.....*.a8.You | 90D0 20 6D 75 73 74 20 65 6E 74 65 72 20 74 68 65 20 must enterthe 90E0 70 72 6F 70 65 72 20 43 44 2D 4B 65 79 20 74 6F properCD-Key to 90F0 20 69 6E 73 74 61 6C 6C 20 74 68 65 20 70 72 6F install thepro 9100 64 75 63 74 2E 41 03 00 FF FF B3 00 62 9B FF 21 duct.A..ÿÿ³.b›ÿ! Change Offset(904C) to 6 and this KEY-Protection will be history,hehe! You can now type in anything you want and it will be valid. BTW, if you also change Offset(8FDC) to 4 it will also accept an empty KEY! (Serial) Ok, now we will see if this Script-Cracking will defeat this damn Serial-Check ! This Check dont use INSHELP or any other DLL. It strickly uses the Script !! This means we cant espect a simple compare_type_5 or 6 before its messagebox ! There is no other way than using our beloved SoftICE a bit ! To see what Setup is comparing when he checks the Serial we must first type in User-Name,(Company) and a Serial. I used "123456789" as Serial. Now invoke SoftICE with its hotkey (Strg+D) and make sure you are inside Setup´s Adress-Context ("Setup" in the right, bottom egde) , otherwise leave SoftICE and invoke it again until you are there. If you are inside the Kernel or inside User API just * trace back with "F12" until you are in Setup! * Set BPX on 0043C89B "bpx 0043C89B" the entry point of the compare part! Now leave SoftICE and press NEXT-> .
SoftICE will pop up at 0043C89B several times and Setup will
perform comparisions !
Here is my history of the comparisions :
Comparisions: Compare_type:
(1) 0 != 1 5 Not important
(2) 0 >= 3 2 Not important (chr-position counter?)
(3) 9 <= 0 1 This looks like our Serial-length! (4) 61> 31 4 Well, its the first char of our Serial!
(5) 7A <31 3 and it setup is checking if it is (6) 41> 31 4 between "a"-"z","A"-"Z","0"-"9"
(7) 5A <31 3 (8) 30> 31 4
(9) 39 <31 3 (10) 3 <="0" 1 Not important(chr-position counter?) BREAK. It seems that it checks every char from our serial seperately. Since our Serial is not valid lets fake this check! (3) This really looks like a char position pointer, which is compared to our serial length. We have to reverse this compare to get out of this check! Here is the hex dump... 6240 00 28 01 32 2E 00 42 2D 00 41 02 00 00 00 41 00 .(.2..B-.A....A. This only checks if our Serial 6250 00 00 00 22 00 70 D7 00 95 42 2E 00 41 00 00 00 ...".p×.•B..A... is empty! 6260 00 B5 00 80 66 00 70 DB 00 62 26 00 21 00 32 2D .µ.€f.pÛ.b&.!.2- 6270 00 42 00 00 22 00 70 D4 00 95 42 2D 00 41 00 00 .B..".pÔ.•B-.A.. 6280 00 00 21 00 32 9B FF 41 01 00 00 00 2C 00 70 D6 ..!.2›ÿA....,.pÖ 6290 00 00 00 02 00 3A 00 41 00 00 00 00 2A 00 61 37 .....:.A....*.a7 62A0 00 50 6C 65 61 73 65 20 65 6E 74 65 72 20 79 6F .Pleaseenter yo 62B0 75 72 20 73 65 72 69 61 6C 20 6E 75 6D 62 65 72 ur serialnumber 62C0 20 74 6F 20 63 6F 6E 74 69 6E 75 65 20 77 69 74 tocontinue wit 62D0 68 20 73 65 74 75 70 2E 41 01 00 FF FF 00 00 00 hsetup.A..ÿÿ... 62E0 00 00 00 01 00 2C 00 70 D9 00 00 00 06 00 2F 00 .....,.pÙ...../. 62F0 62 24 00 21 00 32 2D 00 42 00 00 28 01 32 2E 00 b$.!.2-.B..(.2.. 6300 42 2D 00 41 03 00 00 00 41 00 00 00 00 22 00 70 B-.A....A....".p This checks if our Name 6310 D8 00 95 42 2E 00 41 00 00 00 00 3A 00 41 00 00 Ø.•B..A....:.A..is empty! 6320 00 00 2A 00 61 2E 00 50 6C 65 61 73 65 20 65 6E ..*.a..Please en 6330 74 65 72 20 79 6F 75 72 20 6E 61 6D 65 20 74 6F ter yourname to 6340 20 63 6F 6E 74 69 6E 75 65 20 77 69 74 68 20 73 continuewith s 6350 65 74 75 70 2E 41 01 00 FF FF 00 00 00 00 00 00 etup.A..ÿÿ...... 6360 01 00 2C 00 70 D3 00 00 00 02 00 01 00 41 32 00 ..,.pÓ.......A2. 6370 00 00 B8 00 00 00 06 00 B6 00 10 00 01 00 02 02 ..¸.....¶....... 6380 00 00 05 00 00 00 2F 00 62 9B FF 21 00 32 2D 00 ....../.b›ÿ!.2-. 6390 42 00 00 21 00 32 9A FF 42 2D 00 21 00 32 99 FF B..!.2šÿB-.!.2™ÿ 63A0 41 00 00 00 00 21 00 32 98 FF 41 00 00 00 00 00 A....!.2˜ÿA..... 63B0 00 10 00 29 01 28 01 32 2D 00 42 99 FF 41 01 00 ...).(.2-.B™ÿA.. (3) obviously! 63C0 00 00 42 9A FF 22 00 70 E5 00 95 42 2D 00 41 00 ..Bšÿ".på.•B-.A. 63D0 00 00 00 7A 00 32 97 FF 52 9B FF 42 99 FF 28 01 ...z.2—ÿR›ÿB™ÿ(. 63E0 32 2D 00 42 97 FF 41 04 00 00 00 41 61 00 00 00 2-.B—ÿA....Aa... (4) 63F0 28 01 32 2E 00 42 97 FF 41 03 00 00 00 41 7A 00 (.2..B—ÿA....Az. (5) 6400 00 00 27 01 32 2F 00 42 2D 00 42 2E 00 28 01 32 ..'.2/.B-.B..(.2 6410 2D 00 42 97 FF 41 04 00 00 00 41 41 00 00 00 28 .B—ÿA....AA...( (6) 6420 01 32 2E 00 42 97 FF 41 03 00 00 00 41 5A 00 00 .2..B—ÿA....AZ.. (7) 6430 00 27 01 32 30 00 42 2D 00 42 2E 00 26 01 32 2D .'.20.B-.B..&.2- 6440 00 42 2F 00 42 30 00 22 00 70 DF 00 95 42 2D 00 .B/.B0.".pß.•B-. 6450 41 00 00 00 00 28 01 32 2E 00 42 99 FF 41 02 00 A....(.2..B™ÿA.. 6460 00 00 41 03 00 00 00 22 00 70 DD 00 95 42 2E 00 ..A....".pÝ.•B.. 6470 41 00 00 00 00 2F 01 B7 00 41 00 00 00 00 00 00 A..../.·.A...... 6480 00 00 00 00 01 00 19 01 32 98 FF 42 98 FF 41 01 ........2˜ÿB˜ÿA. 6490 00 00 00 00 00 00 00 00 00 08 00 28 01 32 2D 00 ...........(.2-. 64A0 42 97 FF 41 04 00 00 00 41 30 00 00 00 28 01 32 B—ÿA....A0...(.2 (8) 64B0 2E 00 42 97 FF 41 03 00 00 00 41 39 00 00 00 27 ..B—ÿA....A9...' (9) 64C0 01 32 2F 00 42 2D 00 42 2E 00 22 00 70 E3 00 95 .2/.B-.B..".pã.• 64D0 42 2F 00 41 00 00 00 00 28 01 32 2D 00 42 99 FF B/.A....(.2-.B™ÿ 64E0 41 01 00 00 00 41 03 00 00 00 22 00 70 E1 00 95 A....A....".pá.• 64F0 42 2D 00 41 00 00 00 00 2F 01 B7 00 41 00 00 00 B-.A..../.·.A... 6500 00 00 00 00 00 00 00 01 00 19 01 32 98 FF 42 98 ...........2˜ÿB˜ 6510 FF 41 01 00 00 00 00 00 00 00 00 00 02 00 19 01 ÿA.............. 6520 32 99 FF 42 99 FF 41 01 00 00 00 2C 00 70 DC 00 2™ÿB™ÿA....,.pÜ. 6530 00 00 04 00 28 01 32 2D 00 42 98 FF 41 06 00 00 ....(.2-.B˜ÿA... (11) The Final check! 6540 00 41 0D 00 00 00 22 00 70 E6 00 95 42 2D 00 41 .A....".pæ.•B-.A 6550 00 00 00 00 2F 01 B7 00 41 00 00 00 00 00 00 00 ..../.·.A....... If you have change the byte at (3) offset (63BE) to 2 you will get to the final check. (11) Setup will finally check if 13 chars of your serial were valid! Just change byte at (11) offset (653D) to 5 and this Serial check will be defeated! Summarize: You see now that Script Cracking is much easier than the first approach! We only have to search for MessageBoxes and analyze the script. At all we only have to edit (patch) the script and thats all=")" If i find out more instructions then you even will be able to get a valid Serial(Keymaker)! A Decompiler will follow anyway. Its only a question of time when it will be written so watch out for it,hehe. __________________________ F) ADD-0ON This part will describe the most common InstallSHIELD Installation. If Setup.exe (InstallSHIELD 2.x) is a 16 Bit executeable, then its called The Installation launcher. It needs a support file called _inst32i.ex_ to install under a win32 OS. This Installation is a bit different from the one i have cracked in this Tutorial. _inst32i.ex_ is compressed but not with icompx, but it dont matter! and it contains the following files : INSTALL.EXE _INS0432._MP LZWSERV.EXE _INZ0432._MP WUTL95i.DLL _WUTL95.DLL BOOT16.EXE _INJ0432._MP You can retrieve these File-Names at the beginning of _inst32i.ex_ by yourself. Setup will do the initialization and then it uncompresses _inst32i.ex_ into your Windows-Temp (C:\Windows\Temp). When ya start the Installation you will see the following in Windows\Temp: <_ISTMP0.DIR> DIR This dir will be created by _ins0432._mp!
_INS0432._MP 659 KB This is exactly Setup.exe from this Tutorial !
_INZ0432._MP 20,1 KB This is LZWSERV.EXE (doing the de-compress.)
_WUTIL95.DLL 36,0 KB A win95 support file
_ISTMP0.DIR content :
_SETUP.LIB 151 KB This is exactly the same compressed lib file!
1f8584.DLL 89,0 KB Support DLL
_INSHELP.DLL 23,5 KB Yup, da same DLL!
_UNINST.EXE 292 KB Also da same one
You see now that there are the same files, but only renamed , thats all!
Copy and rename them if you wanna work with these files.
__________________________
G) WIN32.HLP
These Descriptions comes from win32.hlp
GetDriveType:
The GetDriveType function determines whether a disk drive is a removable,
fixed, CD-ROM, RAM disk, or network drive.
UINT GetDriveType(
LPCTSTR lpRootPathName // address of root path
);
Parameters
lpRootPathName
Points to a null-terminated string that specifies the root directory of
the disk to return information about. If lpRootPathName is NULL, the
function uses the root of the current directory.
Return Value
The return value specifies the type of drive. It can be one of the following values:
Value Meaning
0 The drive type cannot be determined.
1 The root directory does not exist.
2 The drive can be removed from the drive.
3 The disk cannot be removed from the drive.
4 The drive is a remote (network) drive.
5 The drive is a CD-ROM drive.
6 The drive is a RAM disk.
________
GetVolumeInformation:
The GetVolumeInformation function returns information about a file
system and volume whose root directory is specified.
BOOL GetVolumeInformation(
LPCTSTR lpRootPathName, // address of root directory of the file system
LPTSTR lpVolumeNameBuffer, // address of name of the volume
DWORD nVolumeNameSize, // length of lpVolumeNameBuffer
LPDWORD lpVolumeSerialNumber, // address of volume serial number
LPDWORD lpMaximumComponentLength, // address of system's maximum filename length
LPDWORD lpFileSystemFlags, // address of file system flags
LPTSTR lpFileSystemNameBuffer, // address of name of file system
DWORD nFileSystemNameSize // length of lpFileSystemNameBuffer
);
Parameters
lpRootPathName
Points to a string that contains the root directory of the volume to be described.
If this parameter is NULL, the root of the current directory is used.
lpVolumeNameBuffer
Points to a buffer that receives the name of the specified volume.
nVolumeNameSize
Specifies the length, in characters, of the volume name buffer.
This parameter is ignored if the volume name buffer is not supplied.
lpVolumeSerialNumber
Points to a variable that receives the volume serial number. This
parameter can be NULL if the serial number is not required.
lpMaximumComponentLength
Points to a doubleword value that receives the maximum length, in
characters, of a filename component supported by the specified file
system. A filename component is that portion of a filename between
backslashes.
The value stored in variable pointed to by *lpMaximumComponentLength is
used to indicate that long names are supported by the specified file system.
For example, for a FAT file system supporting long names, the function
stores the value 255, rather than the previous 8.3 indicator.
Long names can also be supported on systems that use the NTFS and HPFS
file systems.
lpFileSystemFlags
Points to a doubleword that receives flags associated with the
specified file system. This parameter can be any combination of the
following flags, with one exception: FS_FILE_COMPRESSION and
FS_VOL_IS_COMPRESSED are mutually exclusive.
Value Meaning
FS_CASE_IS_PRESERVED If this flag is set, the file system preserves
the case of filenames when it places a name on disk.
FS_CASE_SENSITIVE If this flag is set, the file system supports
case-sensitive filenames.
FS_UNICODE_STORED_ON_DISK If this flag is set, the file system
supports Unicode in filenames as they appear on disk.
FS_PERSISTENT_ACLS If this flag is set, the file system preserves
and enforces ACLs. For example, NTFS preserves and enforces ACLs,
HPFS and FAT do not.
FS_FILE_COMPRESSION The file system supports file-based
compression.
FS_VOL_IS_COMPRESSED The specified volume is a compressed volume;
for example, a DoubleSpace volume.
lpFileSystemNameBuffer
Points to a buffer that receives the name of the file system (such
as FAT, HPFS, or NTFS).
nFileSystemNameSize
Specifies the length, in characters, of the file system name
buffer. This parameter is ignored if the file system name buffer is
not supplied.
Return Value
If all the requested information is retrieved, the return value is
TRUE; otherwise, it is FALSE. To get extended error information,
call GetLastError.
Remarks
The FS_VOL_IS_COMPRESSED flag is the only indicator of volume-based
compression. The file system name is not altered to indicate
compression. This flag comes back set on a DoubleSpace volume, for
example. With volume-based compression, an entire volume is either
compressed or not compressed.
The FS_FILE_COMPRESSION flag indicates whether a file system
supports file-based compression. With file-based compression,
individual files can be compressed or not compressed.
The FS_FILE_COMPRESSION and FS_VOL_IS_COMPRESSED flags are mutually
exclusive; both bits cannot come back set.
The maximum component length value, stored in the DWORD variable
pointed to by lpMaximumComponentLength, is the only indicator that
a volume supports longer-than-normal FAT (or other file system)
file names. The file system name is not altered to indicate support
for long file names.
The GetCompressedFileSize function obtains the compressed size of a
file. The GetFileAttributes function can determine whether an
individual file is compressed.
________
GetWindowText:
The GetWindowText function copies the text of the specified
window's title bar (if it has one) into a buffer. If the specified
window is a control, the text of the control is copied.
int GetWindowText(
HWND hWnd, // handle of window or control with text
LPTSTR lpString, // address of buffer for text
int nMaxCount // maximum number of characters to copy
);
Parameters
hWnd
Identifies the window or control containing the text.
lpString
Points to the buffer that will receive the text.
nMaxCount
Specifies the maximum number of characters to copy to the buffer.
If the text exceeds this limit, it is truncated.
Return Value
If the function succeeds, the return value is the length, in
characters, of the copied string, not including the terminating
null character. If the window has no title bar or text, if the title
bar is empty, or if the window or control handle is invalid, the
return value is zero. To get extended error information, call
GetLastError.
This function cannot retrieve the text of an edit control in
another application.
Remarks
This function causes a WM_GETTEXT message to be sent to the specified window or control.
This function cannot retrieve the text of an edit control in another application.
__________________________
H) LAST WORDS
Yeah, you made it =)
This is the end of this tutorial and i hope i could teach you
something , more or less.
If you have any questions, suggestions or just wanna gimme some feedback,
then just email me!
Also plz inform me if you have find out any error - iam only a human being =)
I dont exactly know what The next Tutorial (natz-2) will discuss yet,
So just watch out for it!
NaTzGUL/REVOLT
natzgul@hotmail.com
__________________________
I) GREETINGS
Groups:
REVOLT, #CRACKING, UCF, PC97, HERITAGE,CRC32
#CRACKING4NEWBIES, CORE, RZR, PWA, XF, DEV etc.
PERSONAL:
CoPhiber, Spanky, Doc-Man, Korak, lgb, DDensity, Krazy_N, delusion,
riches, Laamaah, Darkrat, wiesel, DirHauge, GnoStiC, JosephCo, niabi,
Voxel,TeRaPhY, NiTR8, Marlman, THE_OWL, razzia, K_LeCTeR, FaNt0m,
zz187, HP, Johnastig, StarFury, Hero, +ORC, +Crackers, Fravia+,
LordCaligo, BASSMATIC, j0b ,xoanon, ED!SON etc.
(c) NaTzGUL. All rights reversed
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