mirror of
https://github.com/avast/ioc
synced 2024-06-28 17:51:17 +00:00
143 lines
6.2 KiB
C++
143 lines
6.2 KiB
C++
|
|
#include <windows.h>
|
|
#include <stdio.h>
|
|
#include <conio.h>
|
|
|
|
struct ObjectTable{
|
|
int lNull1; // As Long ' 0x00 (00d)
|
|
int aExecProj; // As Long ' 0x04 (04d) Pointer to a memory structure
|
|
int aProjectInfo2; // As Long ' 0x08 (08d) Pointer to Project Info 2
|
|
int Const1; // As Long ' 0x0C
|
|
int Null2; // As Long ' 0x10
|
|
int lpProjectObject; // As Long ' 0x14
|
|
char uuidObj[15]; // As Byte 'converted from 4 flags dzzie (from vb.idc)
|
|
short fCompileType; // As Integer ' 0x28 (40d) Internal flag used during compilation
|
|
short ObjectCount1; // As Integer ' 0x2A
|
|
short iCompiledObjects; // As Integer ' 0x2C (44d) Number of objects compiled.
|
|
short iObjectsInUse; // As Integer ' 0x2E (46d) Updated in the IDE to correspond the total number ' but will go up or down when initializing/unloading modules.
|
|
int lpObjectArray; // As Long ' 0x30
|
|
int fIdeFlag; // As Long ' 0x34
|
|
int lpIdeData; // As Long ' 0x38
|
|
int lpIdeData2; // As Long ' 0x3C
|
|
int aProjectName; // As Long ' 0x40 NTS
|
|
int LangID1; // As Long ' 0x44
|
|
int LangID2; // As Long ' 0x48
|
|
int lpIdeData3; // As Long ' 0x4C
|
|
int dwIdentifier; // As Long ' 0x50
|
|
};
|
|
|
|
struct CodeObject{
|
|
int aObjectInfo; // As Long ' 0x00 Pointer to the Object Info for this Object.
|
|
int Const1; // As Long ' 0x04 Always set to -1 after compiling.
|
|
int aPublicBytes; // As Long ' 0x08 Pointer to Public Variable Size integers
|
|
int aStaticBytes; // As Long ' 0x0C Pointer to Static Variables Struct
|
|
int aModulePublic; // As Long ' 0x10 Pointer to Public Variables in DATA section
|
|
int aModuleStatic; // As Long ' 0x14 Pointer to Static Variables in DATA section
|
|
int aObjectName; // As Long ' 0x18 Name of the Object.
|
|
int ProcCount; // As Long ' 0x1C Number of Methods in Object
|
|
int aProcNamesArray;// As Long ' 0x20 If present, pointer to Method names array.
|
|
int oStaticVars; // As Long ' 0x24 Offset to Static Vars from aModuleStatic
|
|
int ObjectType; // As Long ' 0x28 Flags defining the Object Type.
|
|
int Null3; // As Long ' 0x2C Not valid after compilation.
|
|
};
|
|
|
|
struct ObjectInfo{
|
|
short wRefCount; // 0 As Integer ' Always 1 after compilation.
|
|
short ObjectIndex; // 2 As Integer '
|
|
int aObjectTable; // 4 As Long ' Pointer to the Object Table
|
|
int lpIdeData; // 8 Long ' Zero after compilation. Used in IDE only.
|
|
int lpPrivateObject; // 0xC As Long ' Pointer to Private Object Descriptor.
|
|
int dwReserved; // 0x10 As Long
|
|
int Null2; // 0x14 As Long
|
|
int aObject; // 0x18 As Long ' points to the parent tObject
|
|
int lpProjectData; // 0x1c As Long ' 0x1C [can someone verify this?]
|
|
short NumberOfProcs; // 0x20 As Integer
|
|
short wMethodCount2; // 0x22 As Integer ' Zeroed out after compilation. IDE only.
|
|
int lpMethods; // 0x24 As Long ' Pointer to Array of Methods.
|
|
short iConstantsCount; // 0x28 As Integer ' Number of Constants
|
|
short iMaxConstants; // 0x2A As Integer ' Maximum Constants to allocate.
|
|
int lpIdeData2; // 0x2C As Long
|
|
int lpIdeData3; // 0x30 As Long
|
|
int lpConstantPool; // 0x34 As Long 'can be immediatly followed by OptionalObjectInfo
|
|
};
|
|
|
|
|
|
int __stdcall MsgBox(wchar_t *str)
|
|
{
|
|
if(str == NULL || *str == NULL) return 0;
|
|
return MessageBoxW(0, str, L"In C",0);
|
|
}
|
|
|
|
|
|
unsigned char pcode[] = {
|
|
0xF5, 0x00, 0x00, 0x00, 0x00, 0x1B, 0x00, 0x00, 0x04, 0x68, 0xFF, 0x0A, 0x01, 0x00, 0x0C, 0x00,
|
|
0x04, 0x68, 0xFF, 0xFC, 0x34, 0xFC, 0xF8, 0x78, 0xFF, 0x35, 0x68, 0xFF, 0x3A, 0x58, 0xFF, 0x02,
|
|
0x00, 0x25, 0x08, 0x78, 0xFF, 0xFE, 0x98, 0x03, 0x00, 0x01, 0x00, 0x14, 0x88, 0x10, 0x40, 0x00,
|
|
0x04, 0x00, 0x34, 0x00, 0x2C, 0x00, 0x28, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x19, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x78, 0xFF, 0x03, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x68, 0xFF, 0x02, 0x00, 0xCC, 0xCC, 0xCC, 0xCC, 0xE9, 0xE9, 0xE9, 0xE9, 0xCC, 0xCC, 0xCC, 0xCC,
|
|
0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0x9E, 0x9E, 0x9E, 0x9E, 0x8C, 0x15, 0x00, 0x00,
|
|
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xA0, 0x15, 0x00, 0x00
|
|
};
|
|
|
|
struct COMDEF{
|
|
int unk;
|
|
void* lpData1;
|
|
void* lpData2;
|
|
int unk2;
|
|
};
|
|
|
|
void main(void){
|
|
|
|
int rv = 0;
|
|
void* constPool[20] = {0};
|
|
int lpProjObj[10] = {0};
|
|
|
|
ObjectTable objtable = {0};
|
|
CodeObject codeObj = {0};
|
|
ObjectInfo objInfo = {0};
|
|
|
|
typedef IUnknown* (__stdcall *CreateIExprSrvObj)(int,int,int);
|
|
|
|
HMODULE h = (HMODULE)LoadLibrary("msvbvm60.dll");
|
|
int lpProcCallEngine = (int)GetProcAddress(h,"ProcCallEngine");
|
|
CreateIExprSrvObj IExprSrvObj = (CreateIExprSrvObj)GetProcAddress(h,"CreateIExprSrvObj");
|
|
|
|
//printf("ProcCallEngine = %x, CreateIExprSrvObj=%x\n", lpProcCallEngine,IExprSrvObj);
|
|
|
|
IUnknown *iunk = IExprSrvObj(0,4,0); //initilize runtime
|
|
|
|
int mainLastOffset = (int)&pcode + (0x2c); //last offset - funcstart
|
|
(*(int*)mainLastOffset) = (int)&objInfo; //patch lastOffset of pcode to point to our dynamic ObjInfo Struct
|
|
|
|
objInfo.aObject = (int)&codeObj;
|
|
objInfo.lpConstantPool = (int)&constPool;
|
|
objInfo.aObjectTable = (int)&objtable;
|
|
objtable.lpProjectObject = (int)&lpProjObj; //ENGINE:66104EAB [ebp-2Ch] = ObjTable.lpProjectObject[0x0C]; (heap memory) unknown
|
|
|
|
BSTR b0 = SysAllocString(L"SAPI.SpVoice");
|
|
BSTR b2 = SysAllocString(L"Late binding is cool");
|
|
BSTR b3 = SysAllocString(L"Speak");
|
|
|
|
constPool[0x0] = b0;
|
|
constPool[0x1] = GetProcAddress(h,"rtcCreateObject2");
|
|
constPool[0x2] = b2;
|
|
constPool[0x3] = b3;
|
|
|
|
HRESULT hh = CoInitialize(NULL);
|
|
printf("Launching pcode CoInitialize = %x\n", hh);
|
|
|
|
_asm{
|
|
//int 3
|
|
mov edx, mainLastOffset
|
|
mov ecx, lpProcCallEngine
|
|
call ecx
|
|
}
|
|
|
|
if(iunk!=NULL) iunk->Release(); //doesnt really matter...
|
|
|
|
printf("Press any key to exit...");
|
|
getch();
|
|
|
|
} |