简单Src加壳程序

写了很久了，但对Windows的api不了解，

1比如创建挂起进程报05拒绝访问错误，再比如报了这个错还能正常运行，所以我推测挂起创建进程可能本身就会产生这种错误。(但Win32手册上不是这么说的，就让我感觉到很奇怪，我也尝试着运行了，从网上下载下来的代码，但最终会报错0xc0000005，我的程序有时候也会报这个，太奇怪了)

2其次就是获取线程的context了，这个在我验证地址的时候是af开头的也就是说到了内核部分，但Windows是没有共享内存的，所以我猜测这里要提权可能才能访问了

3再其次就是说管理员运行好像也不能让进程访问Windows的内核，只能用提权，不说了(还没完成提权的操作呢，晚上接着试，先博客放上来，看看有没有师傅能指点一下我)

贴代码：

加密代码

  1 #define _CRT_SECURE_NO_WARNINGS
  2 #include<Windows.h>
  3 #include<CommCtrl.h>
  4 #include<Psapi.h>
  5 #include<iostream>
  6 #include<iomanip>
  7 #include <Tlhelp32.h.>
  8 #include<stdlib.h>
  9 #include<Shlwapi.h>
 10 #include<iostream>
 11 #pragma comment(lib,"shlwapi.lib")
 12 #pragma comment(lib,"comctl32.lib")
 13 #pragma comment(lib,"Psapi.lib")
 14 using namespace std;
 15 
 16 int filesize = 0;
 17 
 18 VOID CacuFileOfSize(IMAGE_OPTIONAL_HEADER pOptionHeader,DWORD *size_,DWORD EncryptOfsize)
 19 {
 20     int count = EncryptOfsize / pOptionHeader.SectionAlignment+ 1;
 21     *size_ += count * pOptionHeader.SectionAlignment;
 22 }
 23 
 24 PVOID pReadFile(LPSTR lpszFile,DWORD *size_)
 25 {
 26     FILE* pFile = NULL;
 27     DWORD filesize = 0;
 28     LPVOID FileBuffer = NULL;
 29 
 30     pFile = fopen(lpszFile, "rb+");
 31     if (!pFile) {
 32         cout << "读取文件失败" << endl;
 33         return NULL;
 34     }
 35 
 36     fseek(pFile, NULL, SEEK_END);
 37     filesize = ftell(pFile);
 38     fseek(pFile, NULL, SEEK_SET);
 39 
 40     FileBuffer = malloc(filesize);
 41     if (!FileBuffer)
 42     {
 43         cout << "内存分配失败" << endl;
 44         fclose(pFile);
 45         return NULL;
 46     }
 47 
 48     size_t size = fread(FileBuffer, 1, filesize, pFile);
 49     *size_ = size;
 50     if (!size)
 51     {
 52         cout << "读取数据失败" << endl;
 53         fclose(pFile);
 54         return NULL;
 55     }
 56     fclose(pFile);
 57     return FileBuffer;
 58 }
 59 
 60 BOOL MemoryToFile(LPSTR NewFileName, PVOID pFileBuffer, DWORD size_)
 61 {
 62     FILE* pFile = NULL;
 63     DWORD filesize = 0;
 64     LPVOID FileBuffer = NULL;
 65 
 66     pFile = fopen(NewFileName, "wb+");
 67     if (!pFile) {
 68         cout << "创建文件失败" << endl;
 69         ExitProcess(0);
 70         return NULL;
 71     }
 72 
 73     fwrite(pFileBuffer, size_, 1, pFile);
 74     fclose(pFile);
 75 }
 76 
 77 VOID ExtendSection(PVOID pFileBuffer, DWORD EncryptOfSize)
 78 {
 79     PIMAGE_DOS_HEADER pDosHeader;
 80     PIMAGE_NT_HEADERS pNTHeader;
 81     PIMAGE_FILE_HEADER pFileHeader;
 82     PIMAGE_OPTIONAL_HEADER pOptionHeader;
 83     PIMAGE_SECTION_HEADER pSectionHeader;
 84     PIMAGE_DATA_DIRECTORY pDataDir;
 85     PIMAGE_BASE_RELOCATION pRelocTable;
 86 
 87     pDosHeader = (PIMAGE_DOS_HEADER)pFileBuffer;
 88     pNTHeader = (PIMAGE_NT_HEADERS)((DWORD)pDosHeader + pDosHeader->e_lfanew);
 89     pFileHeader = (PIMAGE_FILE_HEADER)((DWORD)pNTHeader + 4);
 90     pOptionHeader = (PIMAGE_OPTIONAL_HEADER)(DWORD(pFileHeader) + IMAGE_SIZEOF_FILE_HEADER);
 91     pDataDir = (PIMAGE_DATA_DIRECTORY)((PIMAGE_DATA_DIRECTORY)((DWORD)pNTHeader + 0x78) + 8 * 5);
 92     pSectionHeader = (PIMAGE_SECTION_HEADER)((DWORD)pOptionHeader + pFileHeader->SizeOfOptionalHeader);
 93 
 94 
 95 
 96     //在当前节的最后一个结构体后，再加一个结构体，改变属性值、大小值等
 97     PIMAGE_SECTION_HEADER pCurSection = pSectionHeader + pFileHeader->NumberOfSections;
 98     PIMAGE_SECTION_HEADER temp = pSectionHeader;
 99     //找到代码段
100     while (temp)
101     {
102         if (temp->Name[0] == '.' && temp->Name[1] == 't' && temp->Name[2] == 'e' && temp->Name[3] == 'x' && temp->Name[4] == 't')
103         {
104             pCurSection->Characteristics |= temp->Characteristics;
105             break;
106         }
107         temp++;
108     }
109     //找到新加节的文件偏移
110     pCurSection->Misc.PhysicalAddress = pOptionHeader->SectionAlignment;
111     pCurSection->Name[0] = '.';
112     pCurSection->Name[1] = 'e';
113     pCurSection->Name[2] = 'n';
114     pCurSection->Name[3] = 'S';
115     pCurSection->Name[4] = 'e';
116     pCurSection->Name[5] = 'c';
117     pCurSection->PointerToRawData = (pSectionHeader + pFileHeader->NumberOfSections - 1)->PointerToRawData\
118         + (pSectionHeader + pFileHeader->NumberOfSections - 1)->SizeOfRawData;
119     //pCurSection.
120     pCurSection->Misc.PhysicalAddress = EncryptOfSize;
121     //计算加密文件后对齐后的文件大小
122     DWORD count = EncryptOfSize / pOptionHeader->SectionAlignment + 1;
123     //在虚拟内存中的虚拟偏移
124     pCurSection->VirtualAddress = pOptionHeader->SizeOfImage;
125     //内存中对齐后的大小
126     pCurSection->SizeOfRawData = count * pOptionHeader->SectionAlignment;
127     //在扩展头中将数量加1
128     pFileHeader->NumberOfSections += 1;
129     //增加扩展头的大小
130     pOptionHeader->SizeOfImage += count * pOptionHeader->SectionAlignment;
131     
132 }
133 
134 VOID Encrypt(PCHAR pFile, DWORD size_)
135 {
136     for (int i = 0; i < size_; i++)
137         *(pFile + i) = *(pFile + i) ^ 0x56;
138 }
139 
140 PVOID AddFileOFSize(LPSTR SFile,char NFile[],LPSTR EncryptOfFileName)
141 {
142     //读取shell文件并且为其分配一个新节
143     PVOID pSFileBuffer;
144     DWORD size_;
145     PVOID pNewFileBuffer;
146     pSFileBuffer = pReadFile(SFile, &size_);
147     
148     DWORD EncryptOfSize_;
149     PVOID EncryptOfFile = pReadFile(EncryptOfFileName, &EncryptOfSize_);
150 
151 
152     PIMAGE_DOS_HEADER pDosHeader;
153     PIMAGE_NT_HEADERS pNTHeader;
154     PIMAGE_FILE_HEADER pFileHeader;
155     PIMAGE_OPTIONAL_HEADER pOptionHeader;
156     PIMAGE_SECTION_HEADER pSectionHeader;
157     PIMAGE_DATA_DIRECTORY pDataDir;
158     PIMAGE_BASE_RELOCATION pRelocTable;
159 
160     pDosHeader = (PIMAGE_DOS_HEADER)pSFileBuffer;
161     pNTHeader = (PIMAGE_NT_HEADERS)((DWORD)pDosHeader + pDosHeader->e_lfanew);
162     pFileHeader = (PIMAGE_FILE_HEADER)((DWORD)pNTHeader + 4);
163     pOptionHeader = (PIMAGE_OPTIONAL_HEADER)(DWORD(pFileHeader) + IMAGE_SIZEOF_FILE_HEADER);
164     pDataDir = (PIMAGE_DATA_DIRECTORY)((PIMAGE_DATA_DIRECTORY)((DWORD)pNTHeader + 0x78) + 8 * 5);
165     pSectionHeader = (PIMAGE_SECTION_HEADER)((DWORD)pOptionHeader + pFileHeader->SizeOfOptionalHeader);
166 
167 
168     DWORD OldSize_ = size_;
169     //计算文件加密后的大小
170     CacuFileOfSize(*pOptionHeader, &size_,EncryptOfSize_);
171 
172     pNewFileBuffer = malloc(size_);
173     memset(pNewFileBuffer, 0, size_);
174     memcpy(pNewFileBuffer, pSFileBuffer, OldSize_);
175     ExtendSection(pNewFileBuffer,EncryptOfSize_);
176 
177     //读取需要加密的文件，并且进行加密
178     Encrypt((PCHAR)EncryptOfFile, EncryptOfSize_);
179 
180     memcpy(PVOID((DWORD)pNewFileBuffer+ OldSize_), EncryptOfFile, EncryptOfSize_);
181 
182     MemoryToFile(NFile, pNewFileBuffer, size_);
183     return pNewFileBuffer;
184 }
185 
186 
187 
188 int main(int argc,WCHAR* argv[])
189 {
190     char lpszFile[] = "shell.exe";
191     
192     char lpszNewFile[50] = { 0 };
193     cin >> lpszNewFile;
194 
195     char lpCryptFile[] ="peinfo.exe";
196     PVOID NewFileBuffer=AddFileOFSize(lpszFile, lpszNewFile,lpCryptFile);
197 
198     printf("success");
199     return 0;
200 }

View Code

壳代码

  1 #define _CRT_SECURE_NO_WARNINGS
  2 #include<Windows.h>
  3 #include<CommCtrl.h>
  4 #include<Psapi.h>
  5 #include<iostream>
  6 #include<iomanip>
  7 #include <Tlhelp32.h.>
  8 #include<stdlib.h>
  9 #include<iostream>
 10 #include<Shlwapi.h>
 11 #pragma comment(lib,"shlwapi.lib")
 12 #pragma comment(lib,"comctl32.lib")
 13 #pragma comment(lib,"Psapi.lib")
 14 #pragma once
 15 
 16 #pragma region private
 17 
 18 #define __Macro_ToStringFunc__(x) #x
 19 
 20 #pragma endregion private
 21 
 22 #pragma region public
 23 
 24 #define MacroToString(x) __Macro_ToStringFunc__(x)
 25 #define MacroLine MacroToString(__LINE__)
 26 
 27 #pragma endregion public
 28 int flag;
 29 WCHAR errorMessage[20] = { 0 };
 30 #define messagebox {\
 31     flag=GetLastError();\
 32     wsprintf(errorMessage,L"%d",flag);\
 33     MessageBoxW(0,errorMessage,0,0);\
 34 }
 35 
 36 using namespace std;
 37 
 38 
 39 DWORD RVAToFOA(PVOID pFileBuffer,DWORD dwRva)
 40 {
 41     PIMAGE_DOS_HEADER pDosHeader = NULL;
 42     PIMAGE_NT_HEADERS pNTHeader = NULL;
 43     PIMAGE_FILE_HEADER pPEHeader = NULL;
 44     PIMAGE_OPTIONAL_HEADER32 pOptionHeader = NULL;
 45     PIMAGE_SECTION_HEADER pSectionHeader = NULL;
 46     
 47     if (!pFileBuffer)
 48     {
 49         printf("文件读取失败\n");
 50         return NULL;
 51     }
 52 
 53     //Header信息
 54     pDosHeader = (PIMAGE_DOS_HEADER)pFileBuffer;
 55     pNTHeader = (PIMAGE_NT_HEADERS)((DWORD)pFileBuffer + pDosHeader->e_lfanew);
 56     pPEHeader = (PIMAGE_FILE_HEADER)(((DWORD)pNTHeader) + 4);
 57     pOptionHeader = (PIMAGE_OPTIONAL_HEADER32)((DWORD)pPEHeader + IMAGE_SIZEOF_FILE_HEADER);
 58     pSectionHeader = (PIMAGE_SECTION_HEADER)((DWORD)pOptionHeader + pPEHeader->SizeOfOptionalHeader);
 59 
 60     DWORD ImageSize = pOptionHeader->SizeOfImage;
 61     int Section_Number = pPEHeader->NumberOfSections;
 62     int i = 0;
 63     for (i = 0; i < Section_Number; i++)
 64     {
 65         //printf("VirualSize : %x\n",pSectionHeader->Misc);
 66         //printf("VirualAddress: %x\n",pSectionHeader->VirtualAddress);
 67 
 68         DWORD dumpVirualSize = pSectionHeader->Misc.VirtualSize;
 69         DWORD dumpVirualAddress = pSectionHeader->VirtualAddress;
 70 
 71         if (dwRva >= dumpVirualAddress && dwRva <= dumpVirualAddress + dumpVirualSize)
 72         {
 73             //printf("地址在第:%d 节 %s \n",i+1,pSectionHeader->Name);
 74             break;
 75         }
 76         //下一个节表
 77         pSectionHeader = (PIMAGE_SECTION_HEADER)((DWORD)pSectionHeader + 40);
 78     }
 79 
 80     //确定是第i+1节
 81     //确定偏移距离
 82     DWORD fileOff = pSectionHeader->PointerToRawData + (dwRva - pSectionHeader->VirtualAddress);
 83 
 84     return fileOff;
 85 }
 86 
 87 PVOID pReadFile(LPSTR lpszFile)
 88 {
 89     FILE* pFile = NULL;
 90     DWORD fileSize = 0;
 91     LPVOID pFileBuffer = NULL;
 92 
 93     //打开文件
 94     pFile = fopen(lpszFile, "rb");
 95 
 96     if (!pFile)
 97     {
 98         printf("无法打开文件EXE文件");
 99         return NULL;
100     }
101 
102     fseek(pFile, 0, SEEK_END);
103     fileSize = ftell(pFile);
104     fseek(pFile, 0, SEEK_SET);
105 
106     //分配缓冲区
107     pFileBuffer = malloc(fileSize);
108     if (!pFileBuffer)
109     {
110         printf("分配空间失败!\n");
111         fclose(pFile);
112         return NULL;
113     }
114 
115     //文件读取
116 
117     size_t n = fread(pFileBuffer, fileSize, 1, pFile);
118 
119     if (!n)
120     {
121         printf("读取数据失败\n");
122         free(pFileBuffer);
123         fclose(pFile);
124         return NULL;
125     }
126 
127     //关闭文件
128     fclose(pFile);
129     return pFileBuffer;
130 }
131 
132 PVOID StretchingFile(PVOID pFileBuffer)
133 {
134     PIMAGE_DOS_HEADER pDosHeader = NULL;
135     PIMAGE_NT_HEADERS pNTHeader = NULL;
136     PIMAGE_FILE_HEADER pPEHeader = NULL;
137     PIMAGE_OPTIONAL_HEADER32 pOptionHeader = NULL;
138     PIMAGE_SECTION_HEADER pSectionHeader = NULL;
139 
140     if (!pFileBuffer)
141     {
142         printf("文件读取失败\n");
143         return NULL;
144     }
145 
146     //Header信息
147     pDosHeader = (PIMAGE_DOS_HEADER)pFileBuffer;
148     pNTHeader = (PIMAGE_NT_HEADERS)((DWORD)pFileBuffer + pDosHeader->e_lfanew);
149     pPEHeader = (PIMAGE_FILE_HEADER)(((DWORD)pNTHeader) + 4);
150     pOptionHeader = (PIMAGE_OPTIONAL_HEADER32)((DWORD)pPEHeader + IMAGE_SIZEOF_FILE_HEADER);
151     pSectionHeader = (PIMAGE_SECTION_HEADER)((DWORD)pOptionHeader + pPEHeader->SizeOfOptionalHeader);
152 
153     DWORD ImageSize = pOptionHeader->SizeOfImage;
154 
155     //LPVOID pImageBuffer=NULL;
156     //分配缓冲区
157     LPVOID pImageBuffer = NULL;
158     pImageBuffer = malloc(ImageSize);
159 
160     if (!pImageBuffer)
161     {
162         printf("pImageBuffer分配空间失败!\n");
163         return NULL;
164     }
165     //printf("%x \n",ImageSize);
166 
167     memset(pImageBuffer, 0, ImageSize);
168 
169     //分段拷贝数据到ImageBuffer中
170     //1 拷贝头
171     DWORD HeaderSize = pOptionHeader->SizeOfHeaders;
172     //DWORD Head_i = 0;
173     //copy header
174     memcpy(pImageBuffer, pFileBuffer, HeaderSize);
175 
176     //2 拷贝节 pSectionHeader
177     //数量，位置
178     int Section_Number = pPEHeader->NumberOfSections;
179     //分节进行写入
180 
181     LPVOID pFileBuffer_sec = pFileBuffer;
182     LPVOID pImageBuffer_sec = pImageBuffer;
183 
184     //printf("pFileBuffer_sec: %x \n",pFileBuffer_sec);
185     //printf("pImageBuffer_sec: %x \n",pImageBuffer_sec);
186 
187     for (int i = 0; i < Section_Number; i++)
188     {
189         DWORD FileSizeOfRawData = pSectionHeader->SizeOfRawData;
190         DWORD FilePointerToRawData = pSectionHeader->PointerToRawData;
191         DWORD MemVirtualAddress = pSectionHeader->VirtualAddress;
192         pFileBuffer_sec = (LPVOID)((DWORD)pFileBuffer + FilePointerToRawData);
193         pImageBuffer_sec = (LPVOID)((DWORD)pImageBuffer + MemVirtualAddress);
194 
195         //printf("pFileBuffer_sec: %x \n",pFileBuffer_sec);
196         //printf("pImageBuffer_sec: %x \n",pImageBuffer_sec);
197 
198         memcpy(pImageBuffer_sec, pFileBuffer_sec, FileSizeOfRawData);
199         //下一个节表
200         pSectionHeader = (PIMAGE_SECTION_HEADER)((DWORD)pSectionHeader + 40);
201     }
202 
203     //写出
204     //WirteToFile(pImageBuffer,ImageSize,"c://image.exe");
205 
206     return pImageBuffer;
207 }
208 
209 BOOL MemoryToFile(LPSTR NewFileName, PVOID pFileBuffer, DWORD size_)
210 {
211     FILE* pFile = NULL;
212     DWORD filesize = 0;
213     LPVOID FileBuffer = NULL;
214 
215     pFile = fopen(NewFileName, "wb+");
216     if (!pFile) {
217         cout << "创建文件失败" << endl;
218         ExitProcess(0);
219         return NULL;
220     }
221 
222     fwrite(pFileBuffer, size_, 1, pFile);
223     fclose(pFile);
224 }
225 
226 VOID Decrypt(PVOID pFileBuffer, PIMAGE_SECTION_HEADER lastSection)
227 {
228     for (int i = 0; i < lastSection->Misc.VirtualSize; i++)
229     {
230         *((PBYTE)((int)pFileBuffer + i)) ^= 0x56;
231     }
232     char b[] = "aaaa.exe";
233     MemoryToFile(b, pFileBuffer, lastSection->Misc.VirtualSize);
234 }
235 
236 
237 
238 PVOID GetSrcData(CHAR* lpName)
239 {
240 
241     PVOID pFileBuffer = pReadFile(lpName);
242 
243     PIMAGE_DOS_HEADER pDosHeader;
244     PIMAGE_NT_HEADERS pNTHeader;
245     PIMAGE_FILE_HEADER pFileHeader;
246     PIMAGE_OPTIONAL_HEADER pOptionHeader;
247     PIMAGE_SECTION_HEADER pSectionHeader;
248     PIMAGE_DATA_DIRECTORY pDataDir;
249     PIMAGE_BASE_RELOCATION pRelocTable;
250 
251     pDosHeader = (PIMAGE_DOS_HEADER)pFileBuffer;
252     pNTHeader = (PIMAGE_NT_HEADERS)((DWORD)pDosHeader + pDosHeader->e_lfanew);
253     pFileHeader = (PIMAGE_FILE_HEADER)((DWORD)pNTHeader + 4);
254     pOptionHeader = (PIMAGE_OPTIONAL_HEADER)(DWORD(pFileHeader) + IMAGE_SIZEOF_FILE_HEADER);
255     pDataDir = (PIMAGE_DATA_DIRECTORY)((DWORD)pOptionHeader + 0x60);
256     pSectionHeader = (PIMAGE_SECTION_HEADER)((DWORD)pOptionHeader + pFileHeader->SizeOfOptionalHeader);
257 
258     PIMAGE_SECTION_HEADER lastSection = pSectionHeader + pFileHeader->NumberOfSections-1;
259 
260     PVOID MainModule = (PVOID)((DWORD)pFileBuffer + lastSection->PointerToRawData);
261 
262     Decrypt(MainModule, lastSection);
263 
264     PVOID TempFileMemory = malloc(lastSection->Misc.VirtualSize);
265     memcpy(TempFileMemory, MainModule,lastSection->Misc.VirtualSize);
266 
267     return TempFileMemory;
268 }
269 
270 PVOID MyAnyAllocAddr(PVOID pFileBuffer,HANDLE hProcess,DWORD ImageOfSize)
271 {
272     PIMAGE_DOS_HEADER pDosHeader;
273     PIMAGE_NT_HEADERS pNTHeader;
274     PIMAGE_FILE_HEADER pFileHeader;
275     PIMAGE_OPTIONAL_HEADER pOptionHeader;
276     PIMAGE_SECTION_HEADER pSectionHeader;
277     PIMAGE_DATA_DIRECTORY pDataDir;
278     PIMAGE_BASE_RELOCATION pRelocTable;
279 
280     pDosHeader = (PIMAGE_DOS_HEADER)pFileBuffer;
281     pNTHeader = (PIMAGE_NT_HEADERS)((DWORD)pDosHeader + pDosHeader->e_lfanew);
282     pFileHeader = (PIMAGE_FILE_HEADER)((DWORD)pNTHeader + 4);
283     pOptionHeader = (PIMAGE_OPTIONAL_HEADER)(DWORD(pFileHeader) + IMAGE_SIZEOF_FILE_HEADER);
284     pDataDir = (PIMAGE_DATA_DIRECTORY)((DWORD)pNTHeader + 0x78);
285     pSectionHeader = (PIMAGE_SECTION_HEADER)((DWORD)pOptionHeader + pFileHeader->SizeOfOptionalHeader);
286     
287 
288     //查看是否有重定位表
289     printf("%x\t%x\n", (pDataDir + 5)->VirtualAddress, (pDataDir + 5)->Size);
290     if ((pDataDir + 5)->VirtualAddress == 0&&(pDataDir+5)->Size==0)
291     {
292 
293         MessageBox(0, L"没有重定位表1，出错了", 0, 0);
294         ExitProcess(0);
295     }
296     PIMAGE_BASE_RELOCATION RelAddr=(PIMAGE_BASE_RELOCATION)(RVAToFOA(pFileBuffer,\
297         (pDataDir + 5)->VirtualAddress)\
298         +(DWORD)pFileBuffer);
299 
300     PVOID VirAddr=VirtualAllocEx(hProcess, NULL, ImageOfSize, MEM_RESERVE | MEM_COMMIT, PAGE_EXECUTE_READWRITE);
301     
302     if (VirAddr == NULL)
303     {
304         MessageBox(0, L"随意地址未分配成功", 0, 0);
305         ExitProcess(0);
306     }
307 
308     //修复重定位表
309     while (1)
310     {
311         if (RelAddr->SizeOfBlock == 0 || RelAddr->VirtualAddress == 0)
312         {
313             break;
314         }
315         printf("%d\t%d", RelAddr->VirtualAddress);
316         RelAddr->VirtualAddress += (DWORD)VirAddr - pOptionHeader->ImageBase;
317         RelAddr = (PIMAGE_BASE_RELOCATION)((DWORD)RelAddr + RelAddr->SizeOfBlock);
318 
319     }
320     return VirAddr;
321 }
322 
323 int EnablePrivilege(bool isStart)
324 {
325     //1. 得到令牌句柄  
326     HANDLE  hToken = NULL;      //令牌句柄    
327     if (!OpenProcessToken(GetCurrentProcess(),
328         TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY | TOKEN_READ,
329         &hToken))
330     {
331         return FALSE;
332     }
333 
334     //2. 得到特权值  
335     LUID    luid = { 0 };         //特权值  
336     if (!LookupPrivilegeValue(NULL, SE_DEBUG_NAME, &luid))
337     {
338         return FALSE;
339     }
340     //3. 提升令牌句柄权限  
341     TOKEN_PRIVILEGES tp = { 0 };  //令牌新权限  
342     tp.PrivilegeCount = 1;
343     tp.Privileges[0].Luid = luid;
344     tp.Privileges[0].Attributes = isStart ? SE_PRIVILEGE_ENABLED : 0;
345     if (!AdjustTokenPrivileges(hToken, FALSE, &tp, 0, NULL, NULL))
346     {
347         return FALSE;
348     }
349     //4. 关闭令牌句柄  
350     CloseHandle(hToken);
351     return 0;
352 }
353 
354 VOID MainPro()
355 {
356     EnablePrivilege(true);
357     PIMAGE_DOS_HEADER pDosHeader;
358     PIMAGE_NT_HEADERS pNTHeader;
359     PIMAGE_FILE_HEADER pFileHeader;
360     PIMAGE_OPTIONAL_HEADER pOptionHeader;
361     PIMAGE_SECTION_HEADER pSectionHeader;
362     PIMAGE_BASE_RELOCATION pRelocTable;
363 
364     CHAR shellDirectory[256] = { 0 };
365     GetModuleFileNameA(NULL, shellDirectory, 256);
366 
367 
368     TCHAR W_CHAR_shellDirectory[256] = { 0 };
369     GetModuleFileName(NULL, W_CHAR_shellDirectory, 256);
370     
371     MessageBox(0, W_CHAR_shellDirectory, 0, 0);
372 
373     //messagebox;
374     //MessageBoxA(0, MacroLine, 0, 0);
375 
376     PVOID TempFileMemory = GetSrcData(shellDirectory);
377 
378     pDosHeader = (PIMAGE_DOS_HEADER)TempFileMemory;
379     pNTHeader = (PIMAGE_NT_HEADERS)((DWORD)pDosHeader + pDosHeader->e_lfanew);
380     pFileHeader = (PIMAGE_FILE_HEADER)((DWORD)pNTHeader + 4);
381     pOptionHeader = (PIMAGE_OPTIONAL_HEADER)(DWORD(pFileHeader) + IMAGE_SIZEOF_FILE_HEADER);
382     pSectionHeader = (PIMAGE_SECTION_HEADER)((DWORD)pOptionHeader + pFileHeader->SizeOfOptionalHeader);
383 
384     STARTUPINFO si = { 0 };
385     si.cb = sizeof(STARTUPINFO);
386     PROCESS_INFORMATION pi;
387 
388     //以挂起的形式创建进程
389     int f=CreateProcess(W_CHAR_shellDirectory,\
390         NULL,\
391         NULL, \
392         NULL, \
393         FALSE, \
394         CREATE_SUSPENDED,\
395         NULL,\
396         NULL,\
397         &si,\
398         &pi);
399     CHAR szTempStr[256] = { 0 };
400     if (!f)
401     {
402         MessageBox(0, L"failed create process", 0, 0);
403         ExitProcess(0);
404     }
405 
406 
407     messagebox;
408     MessageBoxA(0, MacroLine, 0, 0);
409     //获取context信息
410 
411 
412     CONTEXT context;
413     context.ContextFlags = CONTEXT_FULL;
414     GetThreadContext(pi.hThread, &context);
415     printf("%x\t%x\n", pi.hThread,&context);
416 
417 
418     messagebox;
419     MessageBoxA(0, MacroLine, 0, 0);
420     
421     //char* baseaddress = (char*)context.ebx + 8;
422     //tchar* szbuffer[4] = { 0 };
423     //readprocessmemory(pi.hprocess, baseaddress, szbuffer, 4, null);
424     //int* fileimagebase = (int*)szbuffer;
425 
426 
427     char* baseAddress = (CHAR*)context.Ebx + 8;
428     TCHAR szBuffer[4] = { 0 };
429     ReadProcessMemory(pi.hProcess, baseAddress, szBuffer, 4, NULL);
430     int* fileImageBase;
431     fileImageBase = (int*)szBuffer;
432     DWORD shellImageBase = *fileImageBase;
433 
434 
435     /*
436     char* baseAddress = (CHAR*)contx.Ebx+8;
437     TCHAR szBuffer[4]={0};
438     ReadProcessMemory(pi.hProcess,baseAddress,szBuffer,4,NULL);
439     int* fileImageBase;
440     fileImageBase = (int*)szBuffer;
441     DWORD shellImageBase  = *fileImageBase;
442     */
443 
444 
445     messagebox;
446     MessageBoxA(0,MacroLine,0,0);
447 
448 
449 
450     //卸载外壳程序
451     HMODULE hModuleNt = LoadLibrary(L"ntdll.dll");
452     if (hModuleNt == NULL)
453     {
454         MessageBox(0, L"导入ntdll.dll失败", 0, 0);
455         ExitProcess(0);
456     }
457     typedef DWORD(WINAPI* _ZwUnmapViewOfSection)(unsigned long, unsigned long);
458 
459     _ZwUnmapViewOfSection pZwUnmapViewOfSection = (_ZwUnmapViewOfSection)GetProcAddress(hModuleNt, "ZwUnmapViewOfSection");
460     pZwUnmapViewOfSection((unsigned long)pi.hProcess, shellImageBase);
461 
462 
463 
464     messagebox;
465     MessageBoxA(0, MacroLine, 0, 0);
466     //在指定位置分配空间
467 
468 
469     PVOID OtherAddress = VirtualAllocEx(pi.hProcess, (PVOID)pOptionHeader->ImageBase, pOptionHeader->SizeOfImage, MEM_RESERVE | MEM_COMMIT, PAGE_EXECUTE_READWRITE);
470     
471     
472     messagebox;
473     MessageBoxA(0, MacroLine, 0, 0);
474 
475 
476     if (OtherAddress == NULL)
477     {
478         OtherAddress=MyAnyAllocAddr(TempFileMemory, pi.hProcess, pOptionHeader->SizeOfImage);
479     }
480 
481     PVOID StretchedFileMemory = StretchingFile(TempFileMemory);
482     
483     unsigned long old;
484     WriteProcessMemory(pi.hProcess, (void*)(context.Ebx + 8), &OtherAddress, sizeof(DWORD), NULL);
485     ;
486 
487 
488     messagebox;
489     MessageBoxA(0, MacroLine, 0, 0);
490 
491 
492     if (WriteProcessMemory(pi.hProcess, OtherAddress, StretchedFileMemory, pOptionHeader->SizeOfImage, &old)) {
493         context.ContextFlags = CONTEXT_FULL;
494         //context.Eax = pOptionHeader->ImageBase;
495         context.Eax = pOptionHeader->AddressOfEntryPoint + (DWORD)OtherAddress;
496         SetThreadContext(pi.hThread, &context);
497 
498         int z = ResumeThread(pi.hThread);
499         printf("success!%d", f);
500         CloseHandle(pi.hThread);
501     }
502     else
503     {
504         printf("Failed");
505     }
506     EnablePrivilege(false);
507     //messagebox;
508     //MessageBoxA(0, MacroLine, 0, 0);
509 }
510 
511 int main()
512 {
513     MainPro();
514 }

View Code

posted @ 2020-10-13 15:51 PYozo_free 阅读(173) 评论(0) 编辑收藏举报

刷新页面返回顶部

PYozo_free

简单Src加壳程序

公告