!va2pa (convert a virtual address to physical address)
Description of the '!va2pa' command in HyperDbg.
Command
!va2pa
Syntax
!va2pa [VirtualAddress (hex)] [pid ProcessId (hex)]
Description
Converts the VIRTUAL address to the PHYSICAL address.
Parameters
[VirtualAddress (hex)]
The target virtual address.
[pid ProcessId (hex)] (optional)
The Process Id of where you want to convert the address based on it.
If you don't specify the pid, then the default pid is the current process (HyperDbg) process layout of memory.
In the Debugger Mode, the pid (parameter) is ignored. If you want to view another process memory, use the '.process' command to switch to another process memory layout.
Examples
The following command shows the physical address of
nt!ExAllocatePoolWithTag.1
HyperDbg> !va2pa nt!ExAllocatePoolWithTag
2
35b1030
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The following command shows the physical address of
nt!ExAllocatePoolWithTag+5.1
HyperDbg> !va2pa nt!ExAllocatePoolWithTag
2
35b1035
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The following command shows the physical address of
fffff800`4ebc9370.1
HyperDbg> !va2pa fffff800`4ebc9370
2
21c9370
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The following command shows the physical address of
fffff800`4ebc9370in the process layout of process id (0x4).1
HyperDbg> !va2pa fffff800`4ebc9370 pid 0x4
2
21c9370
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IOCTL
This function works by calling DeviceIoControl with
IOCTL = IOCTL_DEBUGGER_VA2PA_AND_PA2VA_COMMANDS, you have to send it in the following structure.1
typedef struct _DEBUGGER_VA2PA_AND_PA2VA_COMMANDS
2
{
3
UINT64 VirtualAddress;
4
UINT64 PhysicalAddress;
5
UINT32 ProcessId;
6
BOOLEAN IsVirtual2Physical;
7
UINT32 KernelStatus;
8
​
9
} DEBUGGER_VA2PA_AND_PA2VA_COMMANDS, *PDEBUGGER_VA2PA_AND_PA2VA_COMMANDS;
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You should only fill the VirtualAddress of the above structure when you want a physical address and fill the above PhysicalAddress when you want a virtual address. Also, set IsVirtual2Physical to
true in the case of virtual-to-physical and set it to false in the case of physical-to-virtual.If you want to convert based on another process memory layout, then put its process ID. Otherwise, put the current process id on it. ProcessId is ignored in debugger mode.
Remarks
If the virtual address or process id does not exist, then it shows
0.This command is guaranteed to keep debuggee in a halt state (in Debugger Mode); thus, nothing will change during its execution.
Requirements
None
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