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Although I'll go ahead and call InitMadCHook in both processes, it appear only the admin process asking the non-admin process needs to call InitMadCHook.

Thanks again.

My apologies, I once again reviewed this entire topic and failed to notice the "InitMadCHook" suggestion. I didn't think it would be related to IPC but it appears it does. I believe my solution is now behaving properly. Thanks so much for your quick replies and sorry for taking us down the...

SendIpcMessage works fine when not asking for a reply. This is true for an admin process sending a message to a non-admin process. However, expecting a reply causes it to hang on the admin process until the timeout expires. The non-admin queue owner never receives the message. It does not appear the...

Thanks for the quick response. Hopefully this is the info you're looking for. When running as a standard (non-admin) rights, I find the following: Name: \RPC Control\mchipc3516FT Handle: 0x504 Access:0x001F0001 Object Address: 0xFFFFD83DE60FC90 Decoded Access: READ_CONTROL|DELETE|SYNCHRONIZE|WRITE_D...

I’m encountering a similar problem but mine is not related o 64 vs 32 bit. In my case, both my service and the queue owner running in a user session are 32 bits. In my case it seems to do with the elevation rights of the process creating the queue. I can also reproduce this by running one process wi...

Well that is embarrassing. Thanks for the quick reply. I couldn’t see the forest for the trees and got hung up on the const definition and pointers. Thanks again. I can now stop pounding my head on the keyboard.

Hi All, This is no doubt something I’m doing wrong. I’ve not run into trouble hooking most API’s but for some reason, the target app crashes when I hook ExtTextOutA. The app is crashing after my code executes. I’m probably not defining the next hook or the hook proc properly but still can’t figure i...

The undocumented internal version does suggest it is the root function for launching a process. I had to hook it when I was messing with a dot.NET app. I suspect the .NET CLR skipped the others and went directly to CreateProcessInternalW. If you’re still missing apps launch, have you considered the ...

There is also an undocumented "CreateProcessInternalW" in kernel32 that I've had to hook. Pardon the PowerBasic code but here is the function's declaration that worked... DECLARE FUNCTION CreateProcessInternal LIB "KERNEL32.DLL" ALIAS "CreateProcessInternalW" _ (unknown...

Hi All, I’m assuming this off-topic posting is okay since I’ve seen other similar postings here. The company I work for (Iatric Systems) is seeking a full-time programmer skilled with madCodeHook and all the API / IPC work that goes along with it. The project is written in VB6 for the main program w...

Hi All, While I still don’t have a solution, I thought I’d update this posting with some additional troubleshooting information. A colleague directed me to a posting on this site at http://forum.madshi.net/viewtopic.php?t=1122&highlight=createprocessex. I implemented a possible solution found in...

Hi All, I’m wondering if anyone else has come across this problem. When I launch the target application and inject my DLL as a separate step, all goes well and there are no problems. However, if I launch and inject at the same time using CreateProcessEx, the target application crashes. I’ve narrowed...

Hi All, I've gotten IPC to work in VB... Here is a complete sample project. 1. Create a standard VB project. Form1 is created by default. 2. Place a textbox (Text1) on Form1 and size it to consume most of the form. 3. Adjust the properties of the textbox to set MultiLine=True and add scrollbars if y...

To avoid the readmemory error, change the callback definition to use ByVal for all your variables as in...
good luck.