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Reading another program's memory

Senses777 · 2003-05-08T05:57:38

When reading a process's memory via ReadProcessMemory(HANDLE,LPCVOID lpBaseAddress,LPVOID,DWORD,PDWORD), how am I able to know what the begining of the process's memory is? (for lpBaseAddress param when reading the process's memory) I know they are generally 0x400000, but that is not always the case and it is causing me problems. And problem 2: how do I know how much memory the process is using? Right now I am just attempting to read a very large amount of memory and using the last param to see how much was actually read, but this is crappy because I need to alocate a huge amount of memory, just in case that much will be read, then trim it based on how much was actually read. So, the short version of the question is: How do I get what address a program's memory starts at and How do I know how much memory the program is using Thanks! .sen [edited by - Senses777 on May 6, 2003 12:04:37 AM]

General and Gameplay Programming Programming

Started by Senses777 May 06, 2003 09:19 PM

20 comments, last by Senses777 20 years, 11 months ago

cavemanbob

152

May 08, 2003 03:25 AM

Have a look at some of the existing projects for this kind of thing, no point in reinventing the wheel and if there''s one or more for the game you''re looking at it''ll be a huge help.

As a quick warning, ReadMemoryProcess is a windows debug function and will almost surely be messed with or detected in future MMORPG patches. If you can either grab the MS detours library and inject code to extract data into the game exe (Easier way) or even better grab the MS DDK for the appropriate windows version and run some ring 0 code to rip the data out in a completely undetectable way (Harder, but way better).

I''m still using ReadProccessMemory myself, but I''m expecting that to be messed up any patch now...

Keep up the work though, it''s SO cool to see all the stuff around you pop up in your own program

Senses777

756

Author

May 08, 2003 05:57 AM

quote:Original post by cavemanbob
If you can either grab the MS detours library and inject code to extract data into the game exe (Easier way) or even better grab the MS DDK for the appropriate windows version and run some ring 0 code to rip the data out in a completely undetectable way (Harder, but way better).

I''m still using ReadProccessMemory myself, but I''m expecting that to be messed up any patch now...

Keep up the work though, it''s SO cool to see all the stuff around you pop up in your own program

How would I inject code and have it execute in the program to extract the data from the game exe to another program without the use of files (speed is an issue)?

I think I''m still pretty far from getting my app over the program even, or getting input, but I have figured out a way to get info on the memory, its using VirtualQueryEx.

I havn''t yet implemented it but I''m working on it right now, VirtualQueryEx gives info on like pages of memory. Interesting stuff. .sen

"I want to make a simple MMORPG first" - Fenryl

Reading another program's memory

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