直接运行内存中的程序
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站长推荐:NSetup一键部署软件
一键式完成美化安装包制作，自动增量升级，数据统计，数字签名。应对各种复杂场景，脚本模块化拆分，常规复杂的脚本代码，图形化设置。无需专业的研发经验，轻松完成项目部署。(www.nsetup.cn)
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#include "stdafx.h" #include <windows.h> typedef IMAGE_SECTION_HEADER (*PIMAGE_SECTION_HEADERS)[1]; // 计算对齐后的大小 unsigned long GetAlignedSize(unsigned long Origin, unsigned long Alignment) { return (Origin + Alignment - 1) / Alignment * Alignment; } // 计算加载pe并对齐需要占用多少内存 // 未直接使用OptionalHeader.SizeOfImage作为结果是因为据说有的编译器生成的exe这个值会填0 unsigned long CalcTotalImageSize(PIMAGE_DOS_HEADER MzH , unsigned long FileLen , PIMAGE_NT_HEADERS peH , PIMAGE_SECTION_HEADERS peSecH) { unsigned long res; // 计算pe头的大小 res = GetAlignedSize( peH->OptionalHeader.SizeOfHeaders , peH->OptionalHeader.SectionAlignment ); // 计算所有节的大小 for( int i = 0; i < peH->FileHeader.NumberOfSections; ++i) { // 超出文件范围 if(peSecH[i]->PointerToRawData + peSecH[i]->SizeOfRawData > FileLen) return 0; else if(peSecH[i]->VirtualAddress)//计算对齐后某节的大小 { if(peSecH[i]->Misc.VirtualSize) { res = GetAlignedSize( peSecH[i]->VirtualAddress + peSecH[i]->Misc.VirtualSize , peH->OptionalHeader.SectionAlignment ); } else { res = GetAlignedSize( peSecH[i]->VirtualAddress + peSecH[i]->SizeOfRawData , peH->OptionalHeader.SectionAlignment ); } } else if( peSecH[i]->Misc.VirtualSize < peSecH[i]->SizeOfRawData ) { res += GetAlignedSize( peSecH[i]->SizeOfRawData , peH->OptionalHeader.SectionAlignment ); } else { res += GetAlignedSize( peSecH[i]->Misc.VirtualSize , peH->OptionalHeader.SectionAlignment ); }// if_else }// for return res; } // 加载pe到内存并对齐所有节 BOOL AlignPEToMem( void *Buf , long Len , PIMAGE_NT_HEADERS &peH , PIMAGE_SECTION_HEADERS &peSecH , void *&Mem , unsigned long &ImageSize) { PIMAGE_DOS_HEADER SrcMz;// DOS头 PIMAGE_NT_HEADERS SrcPeH;// PE头 PIMAGE_SECTION_HEADERS SrcPeSecH;// 节表 SrcMz = (PIMAGE_DOS_HEADER)Buf; if( Len < sizeof(IMAGE_DOS_HEADER) ) return FALSE; if( SrcMz->e_magic != IMAGE_DOS_SIGNATURE ) return FALSE; if( Len < SrcMz->e_lfanew + (long)sizeof(IMAGE_NT_HEADERS) ) return FALSE; SrcPeH = (PIMAGE_NT_HEADERS)((int)SrcMz + SrcMz->e_lfanew); if( SrcPeH->Signature != IMAGE_NT_SIGNATURE ) return FALSE; if( (SrcPeH->FileHeader.Characteristics & IMAGE_FILE_DLL) || (SrcPeH->FileHeader.Characteristics & IMAGE_FILE_EXECUTABLE_IMAGE == 0) || (SrcPeH->FileHeader.SizeOfOptionalHeader != sizeof(IMAGE_OPTIONAL_HEADER)) ) { return FALSE; } SrcPeSecH = (PIMAGE_SECTION_HEADERS)((int)SrcPeH + sizeof(IMAGE_NT_HEADERS)); ImageSize = CalcTotalImageSize( SrcMz, Len, SrcPeH, SrcPeSecH); if( ImageSize == 0 ) return FALSE; Mem = VirtualAlloc( NULL, ImageSize, MEM_COMMIT, PAGE_EXECUTE_READWRITE); // 分配内存 if( Mem != NULL ) { // 计算需要复制的PE头字节数 unsigned long l = SrcPeH->OptionalHeader.SizeOfHeaders; for( int i = 0; i < SrcPeH->FileHeader.NumberOfSections; ++i) { if( (SrcPeSecH[i]->PointerToRawData) && (SrcPeSecH[i]->PointerToRawData < l) ) { l = SrcPeSecH[i]->PointerToRawData; } } memmove( Mem, SrcMz, l); peH = (PIMAGE_NT_HEADERS)((int)Mem + ((PIMAGE_DOS_HEADER)Mem)->e_lfanew); peSecH = (PIMAGE_SECTION_HEADERS)((int)peH + sizeof(IMAGE_NT_HEADERS)); void *Pt = (void *)((unsigned long)Mem + GetAlignedSize( peH->OptionalHeader.SizeOfHeaders , peH->OptionalHeader.SectionAlignment) ); for( i = 0; i < peH->FileHeader.NumberOfSections; ++i) { // 定位该节在内存中的位置 if(peSecH[i]->VirtualAddress) Pt = (void *)((unsigned long)Mem + peSecH[i]->VirtualAddress); if(peSecH[i]->SizeOfRawData) { // 复制数据到内存 memmove(Pt, (const void *)((unsigned long)(SrcMz) + peSecH[i]->PointerToRawData), peSecH[i]->SizeOfRawData); if(peSecH[i]->Misc.VirtualSize < peSecH[i]->SizeOfRawData) Pt = (void *)((unsigned long)Pt + GetAlignedSize(peSecH[i]->SizeOfRawData, peH->OptionalHeader.SectionAlignment)); else // pt 定位到下一节开始位置 Pt = (void *)((unsigned long)Pt + GetAlignedSize(peSecH[i]->Misc.VirtualSize, peH->OptionalHeader.SectionAlignment)); } else { Pt = (void *)((unsigned long)Pt + GetAlignedSize(peSecH[i]->Misc.VirtualSize, peH->OptionalHeader.SectionAlignment)); } } } return TRUE; } typedef void *(__stdcall *pfVirtualAllocEx)(unsigned long, void *, unsigned long, unsigned long, unsigned long); pfVirtualAllocEx MyVirtualAllocEx = NULL; BOOL IsNT() { return MyVirtualAllocEx!=NULL; } // 生成外壳程序命令行 char *PrepareShellExe(char *CmdParam, unsigned long BaseAddr, unsigned long ImageSize) { if(IsNT()) { char *Buf = new char[256]; memset(Buf, 0, 256); GetModuleFileName(0, Buf, 256); strcat(Buf, CmdParam); return Buf; // 请记得释放内存;-) } else { // Win98下的处理请参考原文;-) // http://community.csdn.net/Expert/topic/4416/4416252.xml?temp=8.709133E-03 return NULL; } } // 是否包含可重定向列表 BOOL HasRelocationTable(PIMAGE_NT_HEADERS peH) { return (peH->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC].VirtualAddress) && (peH->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC].Size); } #pragma pack(push, 1) typedef struct{ unsigned long VirtualAddress; unsigned long SizeOfBlock; } *PImageBaseRelocation; #pragma pack(pop) // 重定向PE用到的地址 void DoRelocation(PIMAGE_NT_HEADERS peH, void *OldBase, void *NewBase) { unsigned long Delta = (unsigned long)NewBase - peH->OptionalHeader.ImageBase; PImageBaseRelocation p = (PImageBaseRelocation)((unsigned long)OldBase + peH->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC].VirtualAddress); while(p->VirtualAddress + p->SizeOfBlock) { unsigned short *pw = (unsigned short *)((int)p + sizeof(*p)); for(unsigned int i=1; i <= (p->SizeOfBlock - sizeof(*p)) / 2; ++i) { if((*pw) & 0xF000 == 0x3000){ unsigned long *t = (unsigned long *)((unsigned long)(OldBase) + p->VirtualAddress + ((*pw) & 0x0FFF)); *t += Delta; } ++pw; } p = (PImageBaseRelocation)pw; } } // 卸载原外壳占用内存 BOOL UnloadShell(HANDLE ProcHnd, unsigned long BaseAddr) { typedef unsigned long (__stdcall *pfZwUnmapViewOfSection)(unsigned long, unsigned long); pfZwUnmapViewOfSection ZwUnmapViewOfSection = NULL; BOOL res = FALSE; HMODULE m = LoadLibrary("ntdll.dll"); if(m){ ZwUnmapViewOfSection = (pfZwUnmapViewOfSection)GetProcAddress(m, "ZwUnmapViewOfSection"); if(ZwUnmapViewOfSection) res = (ZwUnmapViewOfSection((unsigned long)ProcHnd, BaseAddr) == 0); FreeLibrary(m); } return res; } // 创建外壳进程并获取其基址、大小和当前运行状态 BOOL CreateChild(char *Cmd, CONTEXT &Ctx, HANDLE &ProcHnd, HANDLE &ThrdHnd, unsigned long &ProcId, unsigned long &BaseAddr, unsigned long &ImageSize) { STARTUPINFOA si; PROCESS_INFORMATION pi; unsigned long old; MEMORY_BASIC_INFORMATION MemInfo; memset(&si, 0, sizeof(si)); memset(&pi, 0, sizeof(pi)); si.cb = sizeof(si); BOOL res = CreateProcess(NULL, Cmd, NULL, NULL, FALSE, CREATE_SUSPENDED, NULL, NULL, &si, &pi); // 以挂起方式运行进程; if(res){ ProcHnd = pi.hProcess; ThrdHnd = pi.hThread; ProcId = pi.dwProcessId; // 获取外壳进程运行状态，[ctx.Ebx+8]内存处存的是外壳进程的加载基址，ctx.Eax存放有外壳进程的入口地址 Ctx.ContextFlags = CONTEXT_FULL; GetThreadContext(ThrdHnd, &Ctx); ReadProcessMemory(ProcHnd, (void *)(Ctx.Ebx+8), &BaseAddr, sizeof(unsigned long), &old); // 读取加载基址 void *p = (void *)BaseAddr; // 计算外壳进程占有的内存 while(VirtualQueryEx(ProcHnd, p, &MemInfo, sizeof(MemInfo))) { if(MemInfo.State = MEM_FREE) break; p = (void *)((unsigned long)p + MemInfo.RegionSize); } ImageSize = (unsigned long)p - (unsigned long)BaseAddr; } return res; } // 创建外壳进程并用目标进程替换它然后执行 HANDLE AttachPE(char *CmdParam, PIMAGE_NT_HEADERS peH, PIMAGE_SECTION_HEADERS peSecH, void *Ptr, unsigned long ImageSize, unsigned long &ProcId) { HANDLE res = INVALID_HANDLE_VALUE; CONTEXT Ctx; HANDLE Thrd; unsigned long Addr, Size; char *s = PrepareShellExe(CmdParam, peH->OptionalHeader.ImageBase, ImageSize); if(s==NULL) return res; if(CreateChild(s, Ctx, res, Thrd, ProcId, Addr, Size)){ void *p = NULL; unsigned long old; if((peH->OptionalHeader.ImageBase == Addr) && (Size >= ImageSize)){// 外壳进程可以容纳目标进程并且加载地址一致 p = (void *)Addr; VirtualProtectEx(res, p, Size, PAGE_EXECUTE_READWRITE, &old); } else if(IsNT()){ if(UnloadShell(res, Addr)){// 卸载外壳进程占有内存 p = MyVirtualAllocEx((unsigned long)res, (void *)peH->OptionalHeader.ImageBase, ImageSize, MEM_RESERVE | MEM_COMMIT, PAGE_EXECUTE_READWRITE); } if((p == NULL) && HasRelocationTable(peH)){// 分配内存失败并且目标进程支持重定向 p = MyVirtualAllocEx((unsigned long)res, NULL, ImageSize, MEM_RESERVE | MEM_COMMIT, PAGE_EXECUTE_READWRITE); if(p) DoRelocation(peH, Ptr, p); // 重定向 } } if(p){ WriteProcessMemory(res, (void *)(Ctx.Ebx+8), &p, sizeof(DWORD), &old); // 重置目标进程运行环境中的基址 peH->OptionalHeader.ImageBase = (unsigned long)p; if(WriteProcessMemory(res, p, Ptr, ImageSize, &old)){// 复制PE数据到目标进程 Ctx.ContextFlags = CONTEXT_FULL; if((unsigned long)p == Addr) Ctx.Eax = peH->OptionalHeader.ImageBase + peH->OptionalHeader.AddressOfEntryPoint; // 重置运行环境中的入口地址 else Ctx.Eax = (unsigned long)p + peH->OptionalHeader.AddressOfEntryPoint; SetThreadContext(Thrd, &Ctx);// 更新运行环境 ResumeThread(Thrd);// 执行 CloseHandle(Thrd); } else{// 加载失败,杀掉外壳进程 TerminateProcess(res, 0); CloseHandle(Thrd); CloseHandle(res); res = INVALID_HANDLE_VALUE; } } else{// 加载失败,杀掉外壳进程 TerminateProcess(res, 0); CloseHandle(Thrd); CloseHandle(res); res = INVALID_HANDLE_VALUE; } } delete[] s; return res; } HANDLE MemExecute(void *ABuffer, long Len, char *CmdParam, unsigned long *ProcessId) { HANDLE res = INVALID_HANDLE_VALUE; PIMAGE_NT_HEADERS peH; PIMAGE_SECTION_HEADERS peSecH; void *Ptr; unsigned long peSz; if(AlignPEToMem(ABuffer, Len, peH, peSecH, Ptr, peSz)) { res = AttachPE(CmdParam, peH, peSecH, Ptr, peSz, *ProcessId); VirtualFree(Ptr, peSz, MEM_DECOMMIT); } return res; } // 初始化 class CInit { public: CInit() { MyVirtualAllocEx = (pfVirtualAllocEx)GetProcAddress(GetModuleHandle("Kernel32.dll"), "VirtualAllocEx"); } }Init; int main(int argc, char **argv) { HANDLE hFile = NULL; hFile = ::CreateFile( "C:\\Windows\\System32\\cmd.exe" , FILE_ALL_ACCESS , 0 , NULL , OPEN_EXISTING , FILE_ATTRIBUTE_NORMAL , NULL ); if( hFile == INVALID_HANDLE_VALUE ) return -1; ::SetFilePointer( hFile, 0, NULL, FILE_BEGIN); DWORD dwFileSize = ::GetFileSize( hFile, NULL); LPBYTE pBuf = new BYTE[dwFileSize]; memset( pBuf, 0, dwFileSize); DWORD dwNumberOfBytesRead = 0; ::ReadFile( hFile , pBuf , dwFileSize , &dwNumberOfBytesRead , NULL ); ::CloseHandle(hFile); unsigned long ulProcessId = 0; MemExecute( pBuf, dwFileSize, "", &ulProcessId); delete[] pBuf; return 0; } |
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