All rights reserved. Covered by US Patent. Come for the solution, stay for everything else. Welcome to our community! I lost my visual basic source code file. But I have only exe file. Please any body help me. Giving VB direct access to the host functions, is as simple as setting their address in the corresponding constant pool slot. Ripping functions with VBDec is simple.
Simply right click on the function in the left hand treeview and choose the Rip menu option. VBDec will generate all of the embedding data for you. Multiple functions can be ripped at once by right clicking on the top level module name. A corresponding const pool will also be auto-generated along with stubs to update the object Info pointers and asm stubs to call interlinked sub functions. Each compilation unit such as a module, class, form etc gets its own constant pool which is shared for all of the functions in that file.
Pool entries are built up on demand as the file is processed by the compiler from top to bottom. VBDec is capable of automatically deciphering these entries and figuring out what they represent. Once the correct type has been determined, it can generate the C or VB source necessary to fill out the const pool in the host code.
The constant pool viewer form allows you to manually view these entries. In testing it has been performing extremely well outputting complete const pools which require little to no modification. Some const pool entries may show up as Unknown.
When you click on a specific entry the raw data at that offset will be loaded into the lower textbox. This has been seen when using the App Object.
These types of entries are not currently supported using this technique and would not make sense in our context anyways. Interlinked sub functions are supported. A corresponding native stub will be generated along with an entry in the const pool for it. Early binding and late binding to COM objects is also supported. Late binding is done entirely through strings in the const pool.
The following is taken from the early binding sample which loads the Sapi. SpVoice COM object. Generation of this code is generally automatic by VBDec but there may be times where the tool can not automatically detect which kind of const pool entry is being specified. In these cases you may have to manually explore the const pool and extract the data yourself. In the above scenario the file data at the const pool address may look similar to the following:.
Looking at the file offsets for these virtual addresses we find the GUIDs given above. String entries are held as BSTRs , which is a length prefixed unicode string. Since we are in complete control of the const pool, and BSTRs can encapsulate binary data.
You can also dynamically swap out const pool entries to change functionality as the P-Code runs. An example of this is found in the early bind sample. As the strings get used by the runtime, it may try to realloc or release them. Several functions of the runtime require these structures to be initialized. These structures are critical for VB error handling routines and can also come into play for file access functions. Below is the code for the rtcGetErl export.
This function retrieves the user specified error line number associated with the last exception that occurred. From this snippet of code we can see that the runtime stores the TLS slot value at offset Once the actual memory address is retrieved with TlsGetValue The structure field 0x98 is then returned as the stored last error line number.
Rob glenn. I am depressed and horrified!!! Anonymous Posted April 25, 0 Comments. John Warner From: glenn. Actually there is, you can cast the binaries in stone. Regards, Rob glenn. Martin Walke Posted April 26, 0 Comments. Nice — but no way a de-compiler. Register or Login. Welcome back! Sign in with Email. Reset Your Password We'll send an email with a link to reset your password.
Stay ahead! Get the latest news, expert insights and market research, tailored to your interests. Sign up with Email. Code will not started and will be emulated by VB Decompiler. Get Analytic Report on the areas procedures and functions of the program that perform various manipulations with files, registry, windows, processes, as well as using service functions of Visual Basic to call functions by name CallByName and direct access to memory addresses VarPtr.
Minimum System Requirements for v8. Code decompilation for the P-Code compiled applications. Recovery pseudo code to the standard Visual Basic instructions with a highest success rate. Decompiling Code. Disassembling Code.
0コメント