An installshield Decompiler Advanced reversing by fravia+ fra_00xx | 981030 adq 0010 AD 0T Our tools |
- May 12, 2020 Download Decompiler for free. Binary executable decompiler. Decompiler reads program binaries, decompiles them, infers data types, and emits structured C source code. Designed with a pluggable architecture, it currently has: - support for x86, 68k, PowerPC processors (partial support for Arm, Mips, Sparc, Z80, m6502, PDP-11) - support for EXE, Elf, AmigaOS Hunk executable formats - support for.
- Sid is designed to decompile installshield.inx scripts created with installshield 6 or 7 Regards kar10s crystalby. Commented: 2004-05-05.
Help with OOOLLLD Installshield decompiler I recieved an old (win 95 era) program I have wanted for a long time recently. It won't install, and acts like there was a problem when the person copied the disk for me.
This is an overview of the main structure of isDcc. It describes how the main algorithms work, so you should have a good understanding of computer algorithm design. An installshield decompiler
Written by adq
Decompiler Installshield Wizard App
v1.01 - Couple of bugs fixed
Decompiler Installshield Wizard Windows 7
isDcc was written with the help of wisdec v1.0, by NaTzGUL/SiraX, see NaTzGUL's InstallSHIELD Script Cracking. Wisdec is a masterful piece of work, which obviously involved reverse engineering the installshield compiler to discover the format of the compiled script files. I used wisdec to explore the compiled files, changing scripts, recompiling them, and observing the differences reported by wisdec. It took a couple of evenings to divine the format of an installshield 2 file in this manner.
Here, I shall describe a couple of things about installshield files which are essential to understand the following:
- High level code structures: Some higher level code structures (e.g. FOR, WHILE) are transformed by the installshield compiler into lower level sequences, often involving lots of gotos.
- Functions: In the compiled files, functions are indicated by a special 'function start' opcode, and a 'function end' opcode.
- Function prototypes: In the header, there is a set of function prototypes describing each of the functions present in the file, indicating their parameter types, what type of function it is (e.g. a DLL function, or a script function), and it's name if it is a DLL import function.
The first thing written was a parser for the header. This code is fairly simple: it reads values in from the file, processes them, and stores them in appropriate data structures.
However, the main script decoder is rather more complex. It involves three passes through the script code:
The first pass actually reads the raw opcodes from the file, and transforms them into an internal structure describing the code. This is implemented as a massive table-driven algorithm. The table is keyed by opcode. Each entry contains a function pointer to a specific parser function, along with some extra information, such as the parameter count. For an 'installshield system function', a generic decoder function is available, since they all have the same format. The main loop of this stage reads in an opcode, looks it up in the table, and executes the associated function there. This function takes care of the specific processing for that opcode, before returning to the main loop. This continues until the end of the file is encountered.
The first pass actually reads the raw opcodes from the file, and transforms them into an internal structure describing the code. This is implemented as a massive table-driven algorithm. The table is keyed by opcode. Each entry contains a function pointer to a specific parser function, along with some extra information, such as the parameter count. For an 'installshield system function', a generic decoder function is available, since they all have the same format. The main loop of this stage reads in an opcode, looks it up in the table, and executes the associated function there. This function takes care of the specific processing for that opcode, before returning to the main loop. This continues until the end of the file is encountered.
The second pass works out function/prototype pairings, and fixes local variable counts. Because of the way a compiled script works, it is only possible to work out which function prototype is associated with which function body after a call has been made to that function. This stage goes through the interpreted code, looking for function calls, and associating function bodies with prototypes when it finds one. It also works out which variables in the function are locals, and which are parameters, since, again, this is not possible until it is discovered which function prototype pairs with which function. Note that it doesn't actually alter the code in the function to reflect this; it just works out which variables are which. Note that this means any function which is not called cannot be matched to it's prototype, and therefore has to be discarded.
The third, and final pass, goes through the code again, this time transforming the code in function bodies to reflect whether a local or a parameter variable is being accessed, to simplify any later processing.
Now, we have a huge memory structure, representing the compiled file. The next step will be to optimise the code sequences, and recover more of the original structure, for example FOR loops, and IF/ELSE sequences. However, this part is still under development.
Finally, the memory structure is decoded into a .RUL file and output it.
Installshield 5 brings a few changes. Some functions have had extra parameters added, necessitating special decoder functions for some installshield system functions. Also, user defined datatypes are possible, which changed the header slightly. It has also had a large number of functions added to it. To find these, I examined the handy installshield documentation. (I even found some hidden features - see below)
Several functions have been removed from installshield 5, notably the CompressGet family. Installshield have completely revamped their method of installation, and have unfortunately decided to completely unsupport the previous method.
All this means that you cannot recompile an installshield 3 script with the installshield 5 compiler, and vice versa.
Due to the fact that the code automatically discards unused functions, installshield scripts tend to halve in size when recompiled. For example, even if you only use one of the SdDialog functions, the compiler includes all of them in the compiled file.
Incidentally, I discovered a hidden feature of installshield scripts: the call statement. It seems you can have subroutines based on call/return as well as functions. I saw one script which used this feature, which prompted me to investigate further. I wonder why they don't tell anyone about it, since it is still in the compiler.
Currently I am developing code the recover higher level code structures, so that installshield 3 scripts should soon be recompilable too.
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InstallShield 2015 » InstallScript Debugger
In order to find bugs that are occurring only with certain hardware or software configurations, you may need to debug your installation on a system other than your development machine. In that case, it is not necessary to install InstallShield on that computer.
Chrome offline installer bagas31. To debug the installation on a debug machine, instead of on your installation development machine:
1. | Compile and build your installation on the development machine. |
2. | Move copies of the following files from your development machine to the debug machine. |
• | InstallShield Program Files FolderSystemISDbg.exe |
This is the executable file for the InstallScript Debugger.
• | InstallShield Program Files FolderSystemSciLexer.dll |
This file must be present on the debug machine in the same folder as the ISDbg.exe file.
• | InstallShield Program Files FolderProgram0409ISDbg.chm (for the English version of InstallShield) or InstallShield Program Files FolderProgram0411ISDbg.chm (for the Japanese version of InstallShield) |
This is the help file that you can optionally copy to the debug machine so that you can access the InstallScript Debugger help from within the debugger.
3. | Register the ISDbg.exe file by passing it the /REGSERVER command-line parameter. |
4. | Copy your project file and your project folder to the debug machine. This should include your built setup disk images (Setup.exe and media and support files from the Disk ImagesDiskN folders). |
Tip: If the project files on your development machine are accessible to the debug machine over a network, you can skip step 4.
5. | Launch Setup.exe with the /d command-line parameter to debug the installation and provide the location of the debug symbols (.dbg) file. For example, if Setup.dbg is in C:Test, type the following statement at the command line: |
setup /d'C:Test'
Note that if your installation, script, and debug files are all in their original location on the development system, you do not need to specify the path to the debug file—use the following: Fabfilter crack mac.
setup /d Marlin firmware for mac.
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