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life Saver of a Developer: Troubleshooting Tools

Posted by Ankush on November 11, 2011

Its been a long time since I have posted anything here. Don’t think I am not concerned about it,it’s just¬†that I am really busy with SharePoint 2010..Learning new things a lot..So here comes a new topic to my mind. Actually I really wanted to write a blog on this a long time back. But as they say, it’s never too late ūüôā

So what is this blog all about. Day in day out we deal with different development situations and we always get help with some tools or they help us in RAPID. So what I would like to do: Is to prepare a list of all the tools and put it in one place. In case if you  wish to help the community and want to put a link to a good troubleshooting tool,  please leave the link here with a small note and I will add to the list.

The list is going to grow..so please make sure you add this to Favourites….

Here is how it should be :

Process Explorer
http://technet.microsoft.com/en-us/sysinternals/bb896653

Ever wondered which program has a particular file or directory open? Now you can find out. Process Explorer shows you information about which handles and DLLs processes have opened or loaded

Easy one huh?? But what this tool can also do, to help you know about the Integrity level of a process.  Have a look at this: http://en.wikipedia.org/wiki/Mandatory_Integrity_Control

Named objects, including files, registry keys or even other processes and threads, have an entry in the ACL governing access to them, that defines the minimum integrity level of the process that can use the object. Windows makes sure that a process can write to or delete an object only when its integrity level is equal to or higher than the requested integrity level specified by the object.[2] Additionally, process objects with higher IL are out-of-bounds for even read access.

Consequently, a process cannot interact with another process that has a higher IL. So a process cannot perform functions such as inject a DLL into a higher IL process by using the CreateRemoteThread()API function or send data to a different process by using the WriteProcessMemory() function. However, the higher IL process can execute such functions against the lower IL process.[1] However, they can still communicate by using files, Named pipes, LPC or other shared objects. The shared object must have an integrity level as low as the low IL process and should be shared by both the Low-IL and High-IL process.

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