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Code_Virtualizer
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maybe something simpler before full virtualization

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main
James 3 years ago
parent 8122a76182
commit dcea33c072
11 changed files with 132 additions and 13 deletions
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4
CodeVirtualizer/CodeVirtualizer.vcxproj
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@ -151,14 +151,18 @@
<ItemGroup>
<ClCompile Include="NativeCode.cpp" />
<ClCompile Include="Main.cpp" />
<ClCompile Include="CryptedCode.cpp" />
<ClCompile Include="Virtualizer.cpp" />
<ClCompile Include="VirtualMachine.cpp" />
<ClCompile Include="VmCode.cpp" />
<ClCompile Include="XedWrap.cpp" />
</ItemGroup>
<ItemGroup>
<ClInclude Include="Code.h" />
<ClInclude Include="NativeCode.h" />
<ClInclude Include="CryptedCode.h" />
<ClInclude Include="Virtualizer.h" />
<ClInclude Include="VirtualMachine.h" />
<ClInclude Include="VmCode.h" />
<ClInclude Include="Windas.h" />
<ClInclude Include="XedWrap.h" />

21
CodeVirtualizer/CodeVirtualizer.vcxproj.filters
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@ -17,6 +17,12 @@
<ClInclude Include="Virtualizer.h">
<Filter>Virtualizer</Filter>
</ClInclude>
<ClInclude Include="VirtualMachine.h">
<Filter>VirtualMachine</Filter>
</ClInclude>
<ClInclude Include="CryptedCode.h">
<Filter>Obfuscator</Filter>
</ClInclude>
</ItemGroup>
<ItemGroup>
<ClCompile Include="Main.cpp" />
@ -32,6 +38,12 @@
<ClCompile Include="Virtualizer.cpp">
<Filter>Virtualizer</Filter>
</ClCompile>
<ClCompile Include="VirtualMachine.cpp">
<Filter>VirtualMachine</Filter>
</ClCompile>
<ClCompile Include="CryptedCode.cpp">
<Filter>Obfuscator</Filter>
</ClCompile>
</ItemGroup>
<ItemGroup>
<Filter Include="Xed">
@ -43,5 +55,14 @@
<Filter Include="Virtualizer">
<UniqueIdentifier>{f74192e7-2064-44d2-983c-fac92f468c0a}</UniqueIdentifier>
</Filter>
<Filter Include="Virtualizer\NewFilter1">
<UniqueIdentifier>{65f3fdd3-b851-4e50-8a48-d1ecb4af2f91}</UniqueIdentifier>
</Filter>
<Filter Include="VirtualMachine">
<UniqueIdentifier>{d784ddc8-2452-41ff-bc20-582ec03b3eb5}</UniqueIdentifier>
</Filter>
<Filter Include="Obfuscator">
<UniqueIdentifier>{cc5b78db-cdf7-4b83-9652-2722cbdec89e}</UniqueIdentifier>
</Filter>
</ItemGroup>
</Project>

3
CodeVirtualizer/CryptedCode.cpp
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@ -0,0 +1,3 @@
#include "CryptedCode.h"
PNATIVE_CODE_BLOCK RxEmitXorForInstruction(PNATIVE_CODE_LINK Link);

11
CodeVirtualizer/CryptedCode.h
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@ -0,0 +1,11 @@
#ifndef __CRYPTED_CODE_H
#define __CRYPTED_CODE_H
#include "Windas.h"
#include "XedWrap.h"
#include "NativeCode.h"
PNATIVE_CODE_BLOCK RxEmitXorForInstruction(PNATIVE_CODE_LINK Link);
#endif

37
CodeVirtualizer/NativeCode.cpp
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@ -4,16 +4,18 @@ _NATIVE_CODE_LINK::_NATIVE_CODE_LINK()
{
XedDecodedInstZero(&XedInst);
XedDecodedInstSetMode(&XedInst, XED_MACHINE_MODE_LONG_64, XED_ADDRESS_WIDTH_64b);
Flags = 0;
Flags = 0UL;
Next = Prev = NULL;
Label = 0;
Block = NULL;
Label = 0UL;
RawData = NULL;
RawDataSize = 0UL;
}
_NATIVE_CODE_LINK::_NATIVE_CODE_LINK(ULONG LabelId)
_NATIVE_CODE_LINK::_NATIVE_CODE_LINK(ULONG LabelId, _NATIVE_CODE_BLOCK* B)
: _NATIVE_CODE_LINK()
{
Block = B;
Label = LabelId;
Flags = CODE_FLAG_IS_LABEL;
}
@ -59,14 +61,33 @@ VOID NcConcat(PNATIVE_CODE_BLOCK Block1, PNATIVE_CODE_BLOCK Block2)
//update the label names so that there are no conflicts between the two blocks
}
VOID NcInsertBlockAfter(PNATIVE_CODE_LINK Link, PNATIVE_CODE_BLOCK Block)
BOOL NcInsertBlockAfter(PNATIVE_CODE_LINK Link, PNATIVE_CODE_BLOCK Block)
{
}
VOID NcInsertBlockBfore(PNATIVE_CODE_LINK Link, PNATIVE_CODE_BLOCK Block)
BOOL NcInsertBlockBefore(PNATIVE_CODE_LINK Link, PNATIVE_CODE_BLOCK Block)
{
if (!Link || !Link->Block || !Block || !Block->Start || !Block->End)
return FALSE;
if (Block->HasRelativeJumps && Link->Block->HasRelativeJumps)
{
//TODO: increment all labels inside of the block being added
return FALSE;
}
else
{
if (Link->Prev)
Link->Prev->Next = Block->Start;
Block->Start->Prev = Link->Prev;
Block->End->Next = Link;
Link->Prev = Block->End;
return TRUE;
}
return FALSE;
}
BOOL NcCreateLabels(PNATIVE_CODE_BLOCK Block)
@ -111,10 +132,11 @@ BOOL NcCreateLabels(PNATIVE_CODE_BLOCK Block)
}
else
{
NcInsertLinkBefore(JmpPos, new NATIVE_CODE_LINK(CurrentLabelId));
NcInsertLinkBefore(JmpPos, new NATIVE_CODE_LINK(CurrentLabelId, Block));
T->Label = CurrentLabelId;
++CurrentLabelId;
}
Block->HasRelativeJumps = TRUE;
T->Flags |= CODE_FLAG_IS_REL_JMP;
}
return TRUE;
@ -181,7 +203,7 @@ BOOL NcFromBuffer(PNATIVE_CODE_BLOCK Block, PVOID Buffer, ULONG BufferSize)
delete Link;
return FALSE;
}
Link->Block = Block;
Link->Prev = Block->End;
Block->End->Next = Link;
Block->End = Link;
@ -237,3 +259,4 @@ VOID NcDebugPrint(PNATIVE_CODE_BLOCK Block)
}
}
}

12
CodeVirtualizer/NativeCode.h
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@ -5,24 +5,27 @@
#include "XedWrap.h"
#include "Code.h"
struct _NATIVE_CODE_BLOCK;
typedef struct _NATIVE_CODE_LINK
{
_NATIVE_CODE_LINK* Next;
_NATIVE_CODE_LINK* Prev;
_NATIVE_CODE_BLOCK* Block;
ULONG Flags;
ULONG Label;
PUCHAR RawData;
ULONG RawDataSize;
XED_DECODED_INST XedInst;
_NATIVE_CODE_LINK();
_NATIVE_CODE_LINK(ULONG LabelId);
_NATIVE_CODE_LINK(ULONG LabelId, _NATIVE_CODE_BLOCK* B);
}NATIVE_CODE_LINK, *PNATIVE_CODE_LINK;
typedef struct _NATIVE_CODE_BLOCK
{
PNATIVE_CODE_LINK Start;
PNATIVE_CODE_LINK End;
BOOL HasRelativeJumps;
}NATIVE_CODE_BLOCK, *PNATIVE_CODE_BLOCK;
VOID NcInsertLinkAfter(PNATIVE_CODE_LINK Link1, PNATIVE_CODE_LINK Link2);
@ -33,9 +36,9 @@ VOID NcUnlink(PNATIVE_CODE_LINK Link);
VOID NcConcat(PNATIVE_CODE_BLOCK Block1, PNATIVE_CODE_BLOCK Block2);
VOID NcInsertBlockAfter(PNATIVE_CODE_LINK Link, PNATIVE_CODE_BLOCK Block);
BOOL NcInsertBlockAfter(PNATIVE_CODE_LINK Link, PNATIVE_CODE_BLOCK Block);
VOID NcInsertBlockBfore(PNATIVE_CODE_LINK Link, PNATIVE_CODE_BLOCK Block);
BOOL NcInsertBlockBefore(PNATIVE_CODE_LINK Link, PNATIVE_CODE_BLOCK Block);
BOOL NcCreateLabels(PNATIVE_CODE_BLOCK Block);
@ -48,4 +51,5 @@ VOID NcDelete(PNATIVE_CODE_BLOCK Block);
VOID NcDebugPrint(PNATIVE_CODE_BLOCK Block);
#endif

11
CodeVirtualizer/VirtualMachine.cpp
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@ -0,0 +1,11 @@
#include "VirtualMachine.h"
PUCHAR VmEmitVmEnter(PULONG Size)
{
return NULL;
}
PUCHAR VmEmitVmExit(PULONG Size)
{
return NULL;
}

21
CodeVirtualizer/VirtualMachine.h
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@ -0,0 +1,21 @@
#ifndef __VIRTUAL_MACHINE_H
#define __VIRTUAL_MACHINE_H
#include "Windas.h"
#include "XedWrap.h"
typedef struct _VM_DATA
{
PVOID RegisterFile[32];
}VM_DATA, *PVM_DATA;
/*
* VmEnter:
* Move all x86 8 byte registers into storage inside of VM_DATA structure.
* Move address of VM_DATA structure into rcx
* Move virtual instruction pointer into rdx
*/
PUCHAR VmEmitVmEnter(PULONG Size);
PUCHAR VmEmitVmExit(PULONG Size);
#endif

14
CodeVirtualizer/Virtualizer.cpp
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@ -1 +1,15 @@
#include "Virtualizer.h"
BOOL ViCanHandleInst(PNATIVE_CODE_LINK Link)
{
return TRUE;
}
BOOL ViValidateNativeCodeBlock(PNATIVE_CODE_BLOCK Block)
{
for (PNATIVE_CODE_LINK T = Block->Start; T; T = T->Next)
{
if (!ViCanHandleInst(T))
return FALSE;
}
return TRUE;
}

7
CodeVirtualizer/Virtualizer.h
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@ -6,6 +6,13 @@
#include "NativeCode.h"
/*
*
*
*
*/
BOOL ViCanHandleInst(PNATIVE_CODE_LINK Link);
BOOL ViValidateNativeCodeBlock(PNATIVE_CODE_BLOCK Block);
#endif

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