补充：编写shellcode时visualstudio的典型设置

编写这篇博客的目的： 中级上项目 MessageBox 监视器需要编写 shellcode，三期没有讲，于是补充学习了这部分知识。

一、ShellCode的定义和应用场景

Shellcode是不依赖环境，放到任何地方都可以执行的机器码。

shellcode的应用场景很多，本文不研究shellcode的具体应用，而只是研究编写一个shellcode需要掌握哪些知识。

二、ShellCode编写原则

1、不能有全局变量 因为我们编写shellcode时，使用的全局变量是自己的进程里面的全局变量，注入到别的进程里，这个地址就没用了。

2、不能使用常量字符串 和第一点原因一样，字符串常量值也是全局变量，注入到别的进程里，根本没有这个字符串。

要使用字符串，请使用字符数组。

char s[] = {'1','2',0};

3、不能直接调用系统函数 调用系统函数的方式是间接调用(FF15)，需要从IAT表里获取API地址，每个进程的IAT表位置不同，且对方的进程可能没有导入你需要调用的函数的DLL，那么你是不能调用这个系统函数的。

所以我们需要用到 LoadLibrary 和 GetProcAddress 这两个函数，来动态获取系统API的函数指针。

但是 LoadLibrary，GetProcAddress 本身就是系统函数，它们本身就依赖IAT表，咋办呢？

解决方案是这样的：通过FS:[0x30] 找到PEB，然后通过PEB里的LDR链表 [PEB+0x0C]找到 kernel32.dll 的地址，然后我们遍历它的 IAT表，找到 LoadLibrary 和 GetProcAddress 函数。

4、不能嵌套调用其他函数 和前两点道理是一样的，本进程里的函数地址，拿到别的进程的虚拟地址空间是无效的。

三、编写Shellcode

下面通过一段程序，演示编写一个shellcode函数，函数里调用 MessageBoxA 打印。 因为很多时候，shellcode都是用来注入的，所以我的代码把shellcode函数定义成线程函数的形式了。

#include "stdafx.h" #include <Windows.h> #define TOUPPER(x) ((((x)>='a')&&((x)<='z'))?((x)-32):(x)) #define TOLOWER(x) ((((x)>='A')&&((x)<='Z'))?((x)+32):(x)) typedef struct _UNICODE_STRING { USHORT Length; USHORT MaximumLength; PWSTR Buffer; } UNICODE_STRING, *PUNICODE_STRING; typedef struct _PEB_LDR_DATA { DWORD Length; bool Initialized; PVOID SsHandle; LIST_ENTRY InLoadOrderModuleList; LIST_ENTRY InMemoryOrderModuleList; LIST_ENTRY InInitializationOrderModuleList; } PEB_LDR_DATA,*PPEB_LDR_DATA; typedef struct _LDR_DATA_TABLE_ENTRY { LIST_ENTRY InLoadOrderLinks; LIST_ENTRY InMemoryOrderLinks; LIST_ENTRY InInitializationOrderLinks; PVOID DllBase; PVOID EntryPoint; UINT32 SizeOfImage; UNICODE_STRING FullDllName; UNICODE_STRING BaseDllName; UINT32 Flags; USHORT LoadCount; USHORT TlsIndex; LIST_ENTRY HashLinks; PVOID SectionPointer; UINT32 CheckSum; UINT32 TimeDateStamp; PVOID LoadedImports; PVOID EntryPointActivationContext; PVOID PatchInformation; } LDR_DATA_TABLE_ENTRY, *PLDR_DATA_TABLE_ENTRY; typedef HMODULE (WINAPI * PLOADLIBRARYA)(LPCSTR); typedef DWORD (WINAPI * PGETPROCADDRESS)(HMODULE, LPCSTR); typedef DWORD (WINAPI * PMESSAGEBOXA)(HWND, LPCSTR,LPCSTR,UINT); DWORD WINAPI ShellCode(LPVOID lpThreadParameter); int main(int argc, char* argv[]) { CreateThread(0,0,ShellCode,0,0,0); getchar(); return 0; } DWORD WINAPI ShellCode(LPVOID lpThreadParameter) { HMODULE hKernel32 = NULL; HMODULE hUser32 = NULL; PGETPROCADDRESS pGetProcAddress = NULL; PLOADLIBRARYA pLoadLibraryA = NULL; PMESSAGEBOXA pMessageBoxA = NULL; PPEB_LDR_DATA pLDR = NULL; PLDR_DATA_TABLE_ENTRY pLdteHead; PLDR_DATA_TABLE_ENTRY pLdteCur; BOOL bEqual = FALSE; char szKernel32[] = {'k',0,'e',0,'r',0,'n',0,'e',0,'l',0,'3',0,'2',0,'.',0,'d',0,'l',0,'l',0,0,0}; // Unicode char szUser32[] = {'u','s','e','r','3','2','.','d','l','l',0}; char szGetProcAddress[] = {'G','e','t','P','r','o','c','A','d','d','r','e','s','s',0}; char szLoadLibrary[] = {'L','o','a','d','L','i','b','r','a','r','y','A',0}; char szMessageBoxA[] = {'M','e','s','s','a','g','e','B','o','x','A',0}; char szHelloShellCode[] = {'H','e','l','l','o','S','h','e','l','l','C','o','d','e',0}; __asm { mov eax,fs:[0x30] // PEB mov eax,[eax+0x0C] // PEB->LDR mov pLDR,eax } // find kernel32.dll pLdteHead = (PLDR_DATA_TABLE_ENTRY)(&pLDR->InLoadOrderModuleList); pLdteCur = (PLDR_DATA_TABLE_ENTRY)(pLdteHead->InLoadOrderLinks.Flink); do { PLDR_DATA_TABLE_ENTRY pLdte = CONTAINING_RECORD(pLdteCur, LDR_DATA_TABLE_ENTRY, InLoadOrderLinks); char *p1 = szKernel32; char *p2 = (char*)pLdteCur->BaseDllName.Buffer; bEqual = FALSE; while (1) { if (*(PWORD)p1 == 0 && *(PWORD)p2 == 0) { bEqual = TRUE; break; } if (TOUPPER(*p1) != TOUPPER(*p2)) { break; } p1+=2; p2+=2; } if (bEqual) { hKernel32 = (HMODULE)pLdteCur->DllBase; break; } pLdteCur = (PLDR_DATA_TABLE_ENTRY)pLdteCur->InLoadOrderLinks.Flink; } while (pLdteHead != pLdteCur); if (hKernel32 != NULL) { // find GetProcAddress PIMAGE_DOS_HEADER pDosHeader = (PIMAGE_DOS_HEADER)hKernel32; PIMAGE_NT_HEADERS pNTHeader = (PIMAGE_NT_HEADERS)((DWORD)pDosHeader + pDosHeader->e_lfanew); PIMAGE_FILE_HEADER pPEHeader = (PIMAGE_FILE_HEADER)((DWORD)pDosHeader + pDosHeader->e_lfanew + 4); PIMAGE_OPTIONAL_HEADER32 pOptionHeader = (PIMAGE_OPTIONAL_HEADER32)((DWORD)pPEHeader + sizeof(IMAGE_FILE_HEADER)); PIMAGE_SECTION_HEADER pSectionHeader = \ (PIMAGE_SECTION_HEADER)((DWORD)pOptionHeader + pPEHeader->SizeOfOptionalHeader); PIMAGE_EXPORT_DIRECTORY pExportDirectory = \ (PIMAGE_EXPORT_DIRECTORY)((DWORD)hKernel32 + pOptionHeader->DataDirectory[0].VirtualAddress); PDWORD AddressOfFunctions = (PDWORD)((DWORD)hKernel32 + pExportDirectory->AddressOfFunctions); PDWORD AddressOfNames = (PDWORD)((DWORD)hKernel32 + pExportDirectory->AddressOfNames); PWORD AddressOfNameOridinals = (PWORD)((DWORD)hKernel32 + pExportDirectory->AddressOfNameOrdinals); int i; for (i = 0; i < (int)pExportDirectory->NumberOfNames; i++) { char *p1 = szGetProcAddress; char *p2 = (char *)((DWORD)hKernel32 + AddressOfNames[i]); bEqual = FALSE; while (1) { if (*p1 == 0 && *p2 == 0) { bEqual = TRUE; break; } if (*p1 != *p2) { break; } p1++; p2++; } if (bEqual) { pGetProcAddress = (PGETPROCADDRESS)(AddressOfFunctions[AddressOfNameOridinals[i]] + pOptionHeader->ImageBase); } } } else { return 1; } // Loadlibrary pLoadLibraryA = (PLOADLIBRARYA)pGetProcAddress(hKernel32,szLoadLibrary); // test hUser32 = pLoadLibraryA(szUser32); pMessageBoxA = (PMESSAGEBOXA)pGetProcAddress(hUser32,szMessageBoxA); pMessageBoxA(0,szHelloShellCode,0,MB_OK); return 0; }

四、关闭运行时检查生成纯净ShellCode

上一节编写的shellcode能在本进程运行，但是这就完成了吗？ 为了测试生成的shellcode是否真的能够在任意环境下运行，我们首先看一下生成的汇编：

vs2010

vc6

我本以为只有vs会生成堆栈检查代码，没想到VC6也有。保留这些代码，我们的shellcode肯定会出错。

下面介绍VS怎么关闭运行时检查：

重新生成写成，看，代码变得非常清爽：

把函数硬编码提取出来：

unsigned char ShellCodebuff[] = { 0x55, 0x8B, 0xEC, 0x81, 0xEC, 0x0C, 0x01, 0x00, 0x00, 0x53, 0x56, 0x57, 0xC7, 0x45, 0xFC, 0x00, 0x00, 0x00, 0x00, 0xC7, 0x45, 0xF8, 0x00, 0x00, 0x00, 0x00, 0xC7, 0x45, 0xF4, 0x00, 0x00, 0x00, 0x00, 0xC7, 0x45, 0xF0, 0x00, 0x00, 0x00, 0x00, 0xC7, 0x45, 0xEC, 0x00, 0x00, 0x00, 0x00, 0xC7, 0x45, 0xE8, 0x00, 0x00, 0x00, 0x00, 0xC7, 0x45, 0xDC, 0x00, 0x00, 0x00, 0x00, 0xC6, 0x45, 0xC0, 0x6B, 0xC6, 0x45, 0xC1, 0x00, 0xC6, 0x45, 0xC2, 0x65, 0xC6, 0x45, 0xC3, 0x00, 0xC6, 0x45, 0xC4, 0x72, 0xC6, 0x45, 0xC5, 0x00, 0xC6, 0x45, 0xC6, 0x6E, 0xC6, 0x45, 0xC7, 0x00, 0xC6, 0x45, 0xC8, 0x65, 0xC6, 0x45, 0xC9, 0x00, 0xC6, 0x45, 0xCA, 0x6C, 0xC6, 0x45, 0xCB, 0x00, 0xC6, 0x45, 0xCC, 0x33, 0xC6, 0x45, 0xCD, 0x00, 0xC6, 0x45, 0xCE, 0x32, 0xC6, 0x45, 0xCF, 0x00, 0xC6, 0x45, 0xD0, 0x2E, 0xC6, 0x45, 0xD1, 0x00, 0xC6, 0x45, 0xD2, 0x64, 0xC6, 0x45, 0xD3, 0x00, 0xC6, 0x45, 0xD4, 0x6C, 0xC6, 0x45, 0xD5, 0x00, 0xC6, 0x45, 0xD6, 0x6C, 0xC6, 0x45, 0xD7, 0x00, 0xC6, 0x45, 0xD8, 0x00, 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0x85, 0x68, 0xFF, 0xFF, 0xFF, 0x8B, 0x48, 0x3C, 0x8B, 0x95, 0x68, 0xFF, 0xFF, 0xFF, 0x8D, 0x44, 0x0A, 0x04, 0x89, 0x85, 0x60, 0xFF, 0xFF, 0xFF, 0x8B, 0x85, 0x60, 0xFF, 0xFF, 0xFF, 0x83, 0xC0, 0x14, 0x89, 0x85, 0x5C, 0xFF, 0xFF, 0xFF, 0x8B, 0x85, 0x60, 0xFF, 0xFF, 0xFF, 0x0F, 0xB7, 0x48, 0x10, 0x03, 0x8D, 0x5C, 0xFF, 0xFF, 0xFF, 0x89, 0x8D, 0x58, 0xFF, 0xFF, 0xFF, 0x8B, 0x85, 0x5C, 0xFF, 0xFF, 0xFF, 0x8B, 0x4D, 0xFC, 0x03, 0x48, 0x60, 0x89, 0x8D, 0x54, 0xFF, 0xFF, 0xFF, 0x8B, 0x85, 0x54, 0xFF, 0xFF, 0xFF, 0x8B, 0x4D, 0xFC, 0x03, 0x48, 0x1C, 0x89, 0x8D, 0x50, 0xFF, 0xFF, 0xFF, 0x8B, 0x85, 0x54, 0xFF, 0xFF, 0xFF, 0x8B, 0x4D, 0xFC, 0x03, 0x48, 0x20, 0x89, 0x8D, 0x4C, 0xFF, 0xFF, 0xFF, 0x8B, 0x85, 0x54, 0xFF, 0xFF, 0xFF, 0x8B, 0x4D, 0xFC, 0x03, 0x48, 0x24, 0x89, 0x8D, 0x48, 0xFF, 0xFF, 0xFF, 0xC7, 0x85, 0x44, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0xEB, 0x0F, 0x8B, 0x85, 0x44, 0xFF, 0xFF, 0xFF, 0x83, 0xC0, 0x01, 0x89, 0x85, 0x44, 0xFF, 0xFF, 0xFF, 0x8B, 0x85, 0x54, 0xFF, 0xFF, 0xFF, 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现在，我开一个虚拟机，在里面起一个vc6，调用这段硬编码：

五、注入Shellcode到其他进程

下面直接给出程序代码，因为比较简单，都是API，就不多做解释了。 注意，如果你在win10上测试，需要提升调试权限，管理员运行，且目标进程是32位的。

#include "stdafx.h" #include <Windows.h> #define TOUPPER(x) ((((x)>='a')&&((x)<='z'))?((x)-32):(x)) #define TOLOWER(x) ((((x)>='A')&&((x)<='Z'))?((x)+32):(x)) typedef struct _UNICODE_STRING { USHORT Length; USHORT MaximumLength; PWSTR Buffer; } UNICODE_STRING, *PUNICODE_STRING; typedef struct _PEB_LDR_DATA { DWORD Length; bool Initialized; PVOID SsHandle; LIST_ENTRY InLoadOrderModuleList; LIST_ENTRY InMemoryOrderModuleList; LIST_ENTRY InInitializationOrderModuleList; } PEB_LDR_DATA,*PPEB_LDR_DATA; typedef struct _LDR_DATA_TABLE_ENTRY { LIST_ENTRY InLoadOrderLinks; LIST_ENTRY InMemoryOrderLinks; LIST_ENTRY InInitializationOrderLinks; PVOID DllBase; PVOID EntryPoint; UINT32 SizeOfImage; UNICODE_STRING FullDllName; UNICODE_STRING BaseDllName; UINT32 Flags; USHORT LoadCount; USHORT TlsIndex; LIST_ENTRY HashLinks; PVOID SectionPointer; UINT32 CheckSum; UINT32 TimeDateStamp; PVOID LoadedImports; PVOID EntryPointActivationContext; PVOID PatchInformation; } LDR_DATA_TABLE_ENTRY, *PLDR_DATA_TABLE_ENTRY; typedef HMODULE (WINAPI * PLOADLIBRARYA)(LPCSTR); typedef DWORD (WINAPI * PGETPROCADDRESS)(HMODULE, LPCSTR); typedef DWORD (WINAPI * PMESSAGEBOXA)(HWND, LPCSTR,LPCSTR,UINT); DWORD WINAPI ShellCode(PVOID lpThreadParameter); void PrintHexArray(PVOID startAddr, size_t nBytes); unsigned char ShellCodebuff[] = { 0x55, 0x8B, 0xEC, 0x81, 0xEC, 0x0C, 0x01, 0x00, 0x00, 0x53, 0x56, 0x57, 0xC7, 0x45, 0xFC, 0x00, 0x00, 0x00, 0x00, 0xC7, 0x45, 0xF8, 0x00, 0x00, 0x00, 0x00, 0xC7, 0x45, 0xF4, 0x00, 0x00, 0x00, 0x00, 0xC7, 0x45, 0xF0, 0x00, 0x00, 0x00, 0x00, 0xC7, 0x45, 0xEC, 0x00, 0x00, 0x00, 0x00, 0xC7, 0x45, 0xE8, 0x00, 0x00, 0x00, 0x00, 0xC7, 0x45, 0xDC, 0x00, 0x00, 0x00, 0x00, 0xC6, 0x45, 0xC0, 0x6B, 0xC6, 0x45, 0xC1, 0x00, 0xC6, 0x45, 0xC2, 0x65, 0xC6, 0x45, 0xC3, 0x00, 0xC6, 0x45, 0xC4, 0x72, 0xC6, 0x45, 0xC5, 0x00, 0xC6, 0x45, 0xC6, 0x6E, 0xC6, 0x45, 0xC7, 0x00, 0xC6, 0x45, 0xC8, 0x65, 0xC6, 0x45, 0xC9, 0x00, 0xC6, 0x45, 0xCA, 0x6C, 0xC6, 0x45, 0xCB, 0x00, 0xC6, 0x45, 0xCC, 0x33, 0xC6, 0x45, 0xCD, 0x00, 0xC6, 0x45, 0xCE, 0x32, 0xC6, 0x45, 0xCF, 0x00, 0xC6, 0x45, 0xD0, 0x2E, 0xC6, 0x45, 0xD1, 0x00, 0xC6, 0x45, 0xD2, 0x64, 0xC6, 0x45, 0xD3, 0x00, 0xC6, 0x45, 0xD4, 0x6C, 0xC6, 0x45, 0xD5, 0x00, 0xC6, 0x45, 0xD6, 0x6C, 0xC6, 0x45, 0xD7, 0x00, 0xC6, 0x45, 0xD8, 0x00, 0xC6, 0x45, 0xD9, 0x00, 0xC6, 0x45, 0xB4, 0x75, 0xC6, 0x45, 0xB5, 0x73, 0xC6, 0x45, 0xB6, 0x65, 0xC6, 0x45, 0xB7, 0x72, 0xC6, 0x45, 0xB8, 0x33, 0xC6, 0x45, 0xB9, 0x32, 0xC6, 0x45, 0xBA, 0x2E, 0xC6, 0x45, 0xBB, 0x64, 0xC6, 0x45, 0xBC, 0x6C, 0xC6, 0x45, 0xBD, 0x6C, 0xC6, 0x45, 0xBE, 0x00, 0xC6, 0x45, 0xA4, 0x47, 0xC6, 0x45, 0xA5, 0x65, 0xC6, 0x45, 0xA6, 0x74, 0xC6, 0x45, 0xA7, 0x50, 0xC6, 0x45, 0xA8, 0x72, 0xC6, 0x45, 0xA9, 0x6F, 0xC6, 0x45, 0xAA, 0x63, 0xC6, 0x45, 0xAB, 0x41, 0xC6, 0x45, 0xAC, 0x64, 0xC6, 0x45, 0xAD, 0x64, 0xC6, 0x45, 0xAE, 0x72, 0xC6, 0x45, 0xAF, 0x65, 0xC6, 0x45, 0xB0, 0x73, 0xC6, 0x45, 0xB1, 0x73, 0xC6, 0x45, 0xB2, 0x00, 0xC6, 0x45, 0x94, 0x4C, 0xC6, 0x45, 0x95, 0x6F, 0xC6, 0x45, 0x96, 0x61, 0xC6, 0x45, 0x97, 0x64, 0xC6, 0x45, 0x98, 0x4C, 0xC6, 0x45, 0x99, 0x69, 0xC6, 0x45, 0x9A, 0x62, 0xC6, 0x45, 0x9B, 0x72, 0xC6, 0x45, 0x9C, 0x61, 0xC6, 0x45, 0x9D, 0x72, 0xC6, 0x45, 0x9E, 0x79, 0xC6, 0x45, 0x9F, 0x41, 0xC6, 0x45, 0xA0, 0x00, 0xC6, 0x45, 0x88, 0x4D, 0xC6, 0x45, 0x89, 0x65, 0xC6, 0x45, 0x8A, 0x73, 0xC6, 0x45, 0x8B, 0x73, 0xC6, 0x45, 0x8C, 0x61, 0xC6, 0x45, 0x8D, 0x67, 0xC6, 0x45, 0x8E, 0x65, 0xC6, 0x45, 0x8F, 0x42, 0xC6, 0x45, 0x90, 0x6F, 0xC6, 0x45, 0x91, 0x78, 0xC6, 0x45, 0x92, 0x41, 0xC6, 0x45, 0x93, 0x00, 0xC6, 0x85, 0x78, 0xFF, 0xFF, 0xFF, 0x48, 0xC6, 0x85, 0x79, 0xFF, 0xFF, 0xFF, 0x65, 0xC6, 0x85, 0x7A, 0xFF, 0xFF, 0xFF, 0x6C, 0xC6, 0x85, 0x7B, 0xFF, 0xFF, 0xFF, 0x6C, 0xC6, 0x85, 0x7C, 0xFF, 0xFF, 0xFF, 0x6F, 0xC6, 0x85, 0x7D, 0xFF, 0xFF, 0xFF, 0x53, 0xC6, 0x85, 0x7E, 0xFF, 0xFF, 0xFF, 0x68, 0xC6, 0x85, 0x7F, 0xFF, 0xFF, 0xFF, 0x65, 0xC6, 0x45, 0x80, 0x6C, 0xC6, 0x45, 0x81, 0x6C, 0xC6, 0x45, 0x82, 0x43, 0xC6, 0x45, 0x83, 0x6F, 0xC6, 0x45, 0x84, 0x64, 0xC6, 0x45, 0x85, 0x65, 0xC6, 0x45, 0x86, 0x00, 0x64, 0xA1, 0x30, 0x00, 0x00, 0x00, 0x8B, 0x40, 0x0C, 0x89, 0x45, 0xE8, 0x8B, 0x45, 0xE8, 0x83, 0xC0, 0x0C, 0x89, 0x45, 0xE4, 0x8B, 0x45, 0xE4, 0x8B, 0x08, 0x89, 0x4D, 0xE0, 0x8B, 0x45, 0xE0, 0x89, 0x85, 0x74, 0xFF, 0xFF, 0xFF, 0x8D, 0x45, 0xC0, 0x89, 0x85, 0x70, 0xFF, 0xFF, 0xFF, 0x8B, 0x45, 0xE0, 0x8B, 0x48, 0x30, 0x89, 0x8D, 0x6C, 0xFF, 0xFF, 0xFF, 0xC7, 0x45, 0xDC, 0x00, 0x00, 0x00, 0x00, 0xB8, 0x01, 0x00, 0x00, 0x00, 0x85, 0xC0, 0x0F, 0x84, 0xD7, 0x00, 0x00, 0x00, 0x8B, 0x85, 0x70, 0xFF, 0xFF, 0xFF, 0x0F, 0xB7, 0x08, 0x85, 0xC9, 0x75, 0x19, 0x8B, 0x85, 0x6C, 0xFF, 0xFF, 0xFF, 0x0F, 0xB7, 0x08, 0x85, 0xC9, 0x75, 0x0C, 0xC7, 0x45, 0xDC, 0x01, 0x00, 0x00, 0x00, 0xE9, 0xB1, 0x00, 0x00, 0x00, 0x8B, 0x85, 0x70, 0xFF, 0xFF, 0xFF, 0x0F, 0xBE, 0x08, 0x83, 0xF9, 0x61, 0x7C, 0x22, 0x8B, 0x95, 0x70, 0xFF, 0xFF, 0xFF, 0x0F, 0xBE, 0x02, 0x83, 0xF8, 0x7A, 0x7F, 0x14, 0x8B, 0x8D, 0x70, 0xFF, 0xFF, 0xFF, 0x0F, 0xBE, 0x11, 0x83, 0xEA, 0x20, 0x89, 0x95, 0xF8, 0xFE, 0xFF, 0xFF, 0xEB, 0x0F, 0x8B, 0x85, 0x70, 0xFF, 0xFF, 0xFF, 0x0F, 0xBE, 0x08, 0x89, 0x8D, 0xF8, 0xFE, 0xFF, 0xFF, 0x8B, 0x95, 0x6C, 0xFF, 0xFF, 0xFF, 0x0F, 0xBE, 0x02, 0x83, 0xF8, 0x61, 0x7C, 0x22, 0x8B, 0x8D, 0x6C, 0xFF, 0xFF, 0xFF, 0x0F, 0xBE, 0x11, 0x83, 0xFA, 0x7A, 0x7F, 0x14, 0x8B, 0x85, 0x6C, 0xFF, 0xFF, 0xFF, 0x0F, 0xBE, 0x08, 0x83, 0xE9, 0x20, 0x89, 0x8D, 0xF4, 0xFE, 0xFF, 0xFF, 0xEB, 0x0F, 0x8B, 0x95, 0x6C, 0xFF, 0xFF, 0xFF, 0x0F, 0xBE, 0x02, 0x89, 0x85, 0xF4, 0xFE, 0xFF, 0xFF, 0x8B, 0x8D, 0xF8, 0xFE, 0xFF, 0xFF, 0x3B, 0x8D, 0xF4, 0xFE, 0xFF, 0xFF, 0x74, 0x02, 0xEB, 0x23, 0x8B, 0x85, 0x70, 0xFF, 0xFF, 0xFF, 0x83, 0xC0, 0x02, 0x89, 0x85, 0x70, 0xFF, 0xFF, 0xFF, 0x8B, 0x85, 0x6C, 0xFF, 0xFF, 0xFF, 0x83, 0xC0, 0x02, 0x89, 0x85, 0x6C, 0xFF, 0xFF, 0xFF, 0xE9, 0x1C, 0xFF, 0xFF, 0xFF, 0x83, 0x7D, 0xDC, 0x00, 0x74, 0x0B, 0x8B, 0x45, 0xE0, 0x8B, 0x48, 0x18, 0x89, 0x4D, 0xFC, 0xEB, 0x14, 0x8B, 0x45, 0xE0, 0x8B, 0x08, 0x89, 0x4D, 0xE0, 0x8B, 0x45, 0xE4, 0x3B, 0x45, 0xE0, 0x0F, 0x85, 0xD2, 0xFE, 0xFF, 0xFF, 0x83, 0x7D, 0xFC, 0x00, 0x0F, 0x84, 0x92, 0x01, 0x00, 0x00, 0x8B, 0x45, 0xFC, 0x89, 0x85, 0x68, 0xFF, 0xFF, 0xFF, 0x8B, 0x85, 0x68, 0xFF, 0xFF, 0xFF, 0x8B, 0x8D, 0x68, 0xFF, 0xFF, 0xFF, 0x03, 0x48, 0x3C, 0x89, 0x8D, 0x64, 0xFF, 0xFF, 0xFF, 0x8B, 0x85, 0x68, 0xFF, 0xFF, 0xFF, 0x8B, 0x48, 0x3C, 0x8B, 0x95, 0x68, 0xFF, 0xFF, 0xFF, 0x8D, 0x44, 0x0A, 0x04, 0x89, 0x85, 0x60, 0xFF, 0xFF, 0xFF, 0x8B, 0x85, 0x60, 0xFF, 0xFF, 0xFF, 0x83, 0xC0, 0x14, 0x89, 0x85, 0x5C, 0xFF, 0xFF, 0xFF, 0x8B, 0x85, 0x60, 0xFF, 0xFF, 0xFF, 0x0F, 0xB7, 0x48, 0x10, 0x03, 0x8D, 0x5C, 0xFF, 0xFF, 0xFF, 0x89, 0x8D, 0x58, 0xFF, 0xFF, 0xFF, 0x8B, 0x85, 0x5C, 0xFF, 0xFF, 0xFF, 0x8B, 0x4D, 0xFC, 0x03, 0x48, 0x60, 0x89, 0x8D, 0x54, 0xFF, 0xFF, 0xFF, 0x8B, 0x85, 0x54, 0xFF, 0xFF, 0xFF, 0x8B, 0x4D, 0xFC, 0x03, 0x48, 0x1C, 0x89, 0x8D, 0x50, 0xFF, 0xFF, 0xFF, 0x8B, 0x85, 0x54, 0xFF, 0xFF, 0xFF, 0x8B, 0x4D, 0xFC, 0x03, 0x48, 0x20, 0x89, 0x8D, 0x4C, 0xFF, 0xFF, 0xFF, 0x8B, 0x85, 0x54, 0xFF, 0xFF, 0xFF, 0x8B, 0x4D, 0xFC, 0x03, 0x48, 0x24, 0x89, 0x8D, 0x48, 0xFF, 0xFF, 0xFF, 0xC7, 0x85, 0x44, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0xEB, 0x0F, 0x8B, 0x85, 0x44, 0xFF, 0xFF, 0xFF, 0x83, 0xC0, 0x01, 0x89, 0x85, 0x44, 0xFF, 0xFF, 0xFF, 0x8B, 0x85, 0x54, 0xFF, 0xFF, 0xFF, 0x8B, 0x8D, 0x44, 0xFF, 0xFF, 0xFF, 0x3B, 0x48, 0x18, 0x0F, 0x8D, 0xBC, 0x00, 0x00, 0x00, 0x8D, 0x45, 0xA4, 0x89, 0x85, 0x40, 0xFF, 0xFF, 0xFF, 0x8B, 0x85, 0x44, 0xFF, 0xFF, 0xFF, 0x8B, 0x8D, 0x4C, 0xFF, 0xFF, 0xFF, 0x8B, 0x55, 0xFC, 0x03, 0x14, 0x81, 0x89, 0x95, 0x3C, 0xFF, 0xFF, 0xFF, 0xC7, 0x45, 0xDC, 0x00, 0x00, 0x00, 0x00, 0xB8, 0x01, 0x00, 0x00, 0x00, 0x85, 0xC0, 0x74, 0x5B, 0x8B, 0x85, 0x40, 0xFF, 0xFF, 0xFF, 0x0F, 0xBE, 0x08, 0x85, 0xC9, 0x75, 0x16, 0x8B, 0x85, 0x3C, 0xFF, 0xFF, 0xFF, 0x0F, 0xBE, 0x08, 0x85, 0xC9, 0x75, 0x09, 0xC7, 0x45, 0xDC, 0x01, 0x00, 0x00, 0x00, 0xEB, 0x38, 0x8B, 0x85, 0x40, 0xFF, 0xFF, 0xFF, 0x0F, 0xBE, 0x08, 0x8B, 0x95, 0x3C, 0xFF, 0xFF, 0xFF, 0x0F, 0xBE, 0x02, 0x3B, 0xC8, 0x74, 0x02, 0xEB, 0x20, 0x8B, 0x85, 0x40, 0xFF, 0xFF, 0xFF, 0x83, 0xC0, 0x01, 0x89, 0x85, 0x40, 0xFF, 0xFF, 0xFF, 0x8B, 0x85, 0x3C, 0xFF, 0xFF, 0xFF, 0x83, 0xC0, 0x01, 0x89, 0x85, 0x3C, 0xFF, 0xFF, 0xFF, 0xEB, 0x9C, 0x83, 0x7D, 0xDC, 0x00, 0x74, 0x25, 0x8B, 0x85, 0x44, 0xFF, 0xFF, 0xFF, 0x8B, 0x8D, 0x48, 0xFF, 0xFF, 0xFF, 0x0F, 0xB7, 0x14, 0x41, 0x8B, 0x85, 0x50, 0xFF, 0xFF, 0xFF, 0x8B, 0x0C, 0x90, 0x8B, 0x95, 0x5C, 0xFF, 0xFF, 0xFF, 0x03, 0x4A, 0x1C, 0x89, 0x4D, 0xF4, 0xE9, 0x20, 0xFF, 0xFF, 0xFF, 0xEB, 0x07, 0xB8, 0x01, 0x00, 0x00, 0x00, 0xEB, 0x38, 0x8D, 0x45, 0x94, 0x50, 0x8B, 0x4D, 0xFC, 0x51, 0xFF, 0x55, 0xF4, 0x89, 0x45, 0xF0, 0x8D, 0x45, 0xB4, 0x50, 0xFF, 0x55, 0xF0, 0x89, 0x45, 0xF8, 0x8D, 0x45, 0x88, 0x50, 0x8B, 0x4D, 0xF8, 0x51, 0xFF, 0x55, 0xF4, 0x89, 0x45, 0xEC, 0x6A, 0x00, 0x6A, 0x00, 0x8D, 0x85, 0x78, 0xFF, 0xFF, 0xFF, 0x50, 0x6A, 0x00, 0xFF, 0x55, 0xEC, 0x33, 0xC0, 0x5F, 0x5E, 0x5B, 0x8B, 0xE5, 0x5D, 0xC2, 0x04, 0x00}; // 0x4F4 // 提权函数：提升为DEBUG权限 BOOL EnableDebugPrivilege() { HANDLE hToken; BOOL fOk=FALSE; if(OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES,&hToken)) { TOKEN_PRIVILEGES tp; tp.PrivilegeCount=1; LookupPrivilegeValue(NULL,SE_DEBUG_NAME,&tp.Privileges[0].Luid); tp.Privileges[0].Attributes=SE_PRIVILEGE_ENABLED; AdjustTokenPrivileges(hToken,FALSE,&tp,sizeof(tp),NULL,NULL); fOk=(GetLastError()==ERROR_SUCCESS); CloseHandle(hToken); } return fOk; } int main(int argc, char* argv[]) { //CreateThread(0,0,ShellCode,0,0,0); // 打印shellcode //printf("输入ShellCode的地址: "); //DWORD dwAddr; //scanf("%x",&dwAddr); //getchar(); //PrintHexArray((PVOID)dwAddr, 0x4F4); //DWORD dwOldProtect; //VirtualProtect(ShellCodebuff,0x1000,PAGE_EXECUTE_READWRITE,&dwOldProtect); //CreateThread(0,0,(LPTHREAD_START_ROUTINE)&ShellCodebuff,0,0,0); EnableDebugPrivilege(); DWORD dwWritten; DWORD pid; printf("请输入要注入的进程PID: "); scanf("%d", &pid); HANDLE hProcess = OpenProcess(PROCESS_ALL_ACCESS,FALSE,pid); PVOID pAddr = VirtualAllocEx(hProcess,0,0x1000,MEM_COMMIT|MEM_RESERVE,PAGE_EXECUTE_READWRITE); WriteProcessMemory(hProcess,pAddr,ShellCodebuff,0x4F4,&dwWritten); CreateRemoteThread(hProcess,0,0,(LPTHREAD_START_ROUTINE)pAddr,0,0,0); getchar(); return 0; } DWORD WINAPI ShellCode(PVOID lpThreadParameter) { HMODULE hKernel32 = NULL; HMODULE hUser32 = NULL; PGETPROCADDRESS pGetProcAddress = NULL; PLOADLIBRARYA pLoadLibraryA = NULL; PMESSAGEBOXA pMessageBoxA = NULL; PPEB_LDR_DATA pLDR = NULL; PLDR_DATA_TABLE_ENTRY pLdteHead; PLDR_DATA_TABLE_ENTRY pLdteCur; BOOL bEqual = FALSE; char szKernel32[] = {'k',0,'e',0,'r',0,'n',0,'e',0,'l',0,'3',0,'2',0,'.',0,'d',0,'l',0,'l',0,0,0}; // Unicode char szUser32[] = {'u','s','e','r','3','2','.','d','l','l',0}; char szGetProcAddress[] = {'G','e','t','P','r','o','c','A','d','d','r','e','s','s',0}; char szLoadLibrary[] = {'L','o','a','d','L','i','b','r','a','r','y','A',0}; char szMessageBoxA[] = {'M','e','s','s','a','g','e','B','o','x','A',0}; char szHelloShellCode[] = {'H','e','l','l','o','S','h','e','l','l','C','o','d','e',0}; __asm { mov eax,fs:[0x30] // PEB mov eax,[eax+0x0C] // PEB->LDR mov pLDR,eax } // find kernel32.dll pLdteHead = (PLDR_DATA_TABLE_ENTRY)(&pLDR->InLoadOrderModuleList); pLdteCur = (PLDR_DATA_TABLE_ENTRY)(pLdteHead->InLoadOrderLinks.Flink); do { PLDR_DATA_TABLE_ENTRY pLdte = CONTAINING_RECORD(pLdteCur, LDR_DATA_TABLE_ENTRY, InLoadOrderLinks); char *p1 = szKernel32; char *p2 = (char*)pLdteCur->BaseDllName.Buffer; bEqual = FALSE; while (1) { if (*(PWORD)p1 == 0 && *(PWORD)p2 == 0) { bEqual = TRUE; break; } if (TOUPPER(*p1) != TOUPPER(*p2)) { break; } p1+=2; p2+=2; } if (bEqual) { hKernel32 = (HMODULE)pLdteCur->DllBase; break; } pLdteCur = (PLDR_DATA_TABLE_ENTRY)pLdteCur->InLoadOrderLinks.Flink; } while (pLdteHead != pLdteCur); if (hKernel32 != NULL) { // find GetProcAddress PIMAGE_DOS_HEADER pDosHeader = (PIMAGE_DOS_HEADER)hKernel32; PIMAGE_NT_HEADERS pNTHeader = (PIMAGE_NT_HEADERS)((DWORD)pDosHeader + pDosHeader->e_lfanew); PIMAGE_FILE_HEADER pPEHeader = (PIMAGE_FILE_HEADER)((DWORD)pDosHeader + pDosHeader->e_lfanew + 4); PIMAGE_OPTIONAL_HEADER32 pOptionHeader = (PIMAGE_OPTIONAL_HEADER32)((DWORD)pPEHeader + sizeof(IMAGE_FILE_HEADER)); PIMAGE_SECTION_HEADER pSectionHeader = \ (PIMAGE_SECTION_HEADER)((DWORD)pOptionHeader + pPEHeader->SizeOfOptionalHeader); PIMAGE_EXPORT_DIRECTORY pExportDirectory = \ (PIMAGE_EXPORT_DIRECTORY)((DWORD)hKernel32 + pOptionHeader->DataDirectory[0].VirtualAddress); PDWORD AddressOfFunctions = (PDWORD)((DWORD)hKernel32 + pExportDirectory->AddressOfFunctions); PDWORD AddressOfNames = (PDWORD)((DWORD)hKernel32 + pExportDirectory->AddressOfNames); PWORD AddressOfNameOridinals = (PWORD)((DWORD)hKernel32 + pExportDirectory->AddressOfNameOrdinals); int i; for (i = 0; i < (int)pExportDirectory->NumberOfNames; i++) { char *p1 = szGetProcAddress; char *p2 = (char *)((DWORD)hKernel32 + AddressOfNames[i]); bEqual = FALSE; while (1) { if (*p1 == 0 && *p2 == 0) { bEqual = TRUE; break; } if (*p1 != *p2) { break; } p1++; p2++; } if (bEqual) { pGetProcAddress = (PGETPROCADDRESS)(AddressOfFunctions[AddressOfNameOridinals[i]] + pOptionHeader->ImageBase); } } } else { return 1; } // Loadlibrary pLoadLibraryA = (PLOADLIBRARYA)pGetProcAddress(hKernel32,szLoadLibrary); // test hUser32 = pLoadLibraryA(szUser32); pMessageBoxA = (PMESSAGEBOXA)pGetProcAddress(hUser32,szMessageBoxA); pMessageBoxA(0,szHelloShellCode,0,MB_OK); return 0; } void PrintHexArray(PVOID startAddr, size_t nBytes) { for (size_t i = 0; i < nBytes; i++) { printf("0x%02X, ", ((PBYTE)startAddr)[i]); if ((i + 1) % 16 == 0) putchar('\n'); } putchar('\n'); }

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