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I have a GUI app that seems to use registry. So I wanna know if I can capture that function that access registry and check if it's activated because this app doesn't use windows directory, it's just a click and a GUI pops pup.

Is it possible to identify how the app uses registry, how?

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You can try to dissect your executable in IDA Pro and find functions like these: RegOpenKeyEx, RegSetValueEx, RegGetValue, RegQueryValueExW, RegCloseKey, RegOpenCurrentUser (they are part of advapi32.dll).

If you prefer to analyse the registry activity of your app dynamically then use regshot. It's very easy to use it - just make first shot of the registry before you launch your app and then second shot (after say 3-5 minutes) and then press compare-button. regshot will make a report about registry keys/values that have been opened, added, deleted.

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To see which registry keys your applications accesses while running, use Procmon. If you want to monitor more DLL calls than mere registry accesses, i recommend API Monitor.

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  • Furthermore, both of those tools allow you to examine the call-stack for any captured log entry. That will help you find the function in your program that solicited the registry lookup. – Jason Geffner Sep 18 '15 at 13:32

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