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Changing page permissions |
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ks2d 
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Joined: 23 May 2006 Location: India Online Status: Offline Posts: 8 |
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 Topic: Changing page permissionsPosted: 29 May 2006 at 3:07pm |
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Thanks a lot ...and even if we could get the process handle i still dont know how to change the permissions |
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"not all who wander r lost"
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EP_X0FF
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Joined: 08 March 2006 Location: Russian Federation Online Status: Offline Posts: 4753 |
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Posted: 29 May 2006 at 10:43am |
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NtQueryVirtualMemory ...heh...
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Ring0 - the source of inspiration
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MP_ART
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Joined: 08 March 2006 Location: Russian Federation Online Status: Offline Posts: 947 |
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Posted: 29 May 2006 at 10:33am |
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ks2d
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Joined: 23 May 2006 Location: India Online Status: Offline Posts: 8 |
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Posted: 29 May 2006 at 8:21am |
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i am a total newbie...can u tell me which functions will do the trick... i will just have an absolute address range...like the input parametres to VirtualProtect()... |
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"not all who wander r lost"
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MP_ART
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Joined: 08 March 2006 Location: Russian Federation Online Status: Offline Posts: 947 |
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Posted: 29 May 2006 at 7:55am |
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You can try sequential query on page aligned addresses from given range.
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ks2d
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Joined: 23 May 2006 Location: India Online Status: Offline Posts: 8 |
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Posted: 29 May 2006 at 5:29am |
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not necessarily the entire working set just a subset of the working set. but is it possible to change the permissions of the ebtire working set anyways (including code section) |
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"not all who wander r lost"
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EP_X0FF
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Joined: 08 March 2006 Location: Russian Federation Online Status: Offline Posts: 4753 |
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Posted: 29 May 2006 at 5:23am |
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QueryWorkingSet?
you want to do this via driver? Edited by EP_X0FF - 29 May 2006 at 5:27am |
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Ring0 - the source of inspiration
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ks2d
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Joined: 23 May 2006 Location: India Online Status: Offline Posts: 8 |
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Posted: 29 May 2006 at 5:10am |
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Is there a way i can get the PFNs for a given virtual memory range and subsequently change the permissions of those pages to READ-WRITE (using kernel mode priviledges in a device driver)? N.B.:I cant directly use VirtualProtect() directly as i would have no way of knowing what chunk was allocated using VirtualAlloc() |
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"not all who wander r lost"
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...but my problem is that my input is not a process handle but a virtual memory range
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