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研究了1天这个。。。MSDN说的不是很清楚
NTSTATUS PsCreateSystemThread(
_Out_ PHANDLE ThreadHandle,
_In_ ULONG DesiredAccess,
_In_opt_ POBJECT_ATTRIBUTES ObjectAttributes,
_In_opt_ HANDLE ProcessHandle,
_Out_opt_ PCLIENT_ID ClientId,
_In_ PKSTART_ROUTINE StartRoutine,
_In_opt_ PVOID StartContext
);
该函数用于创建系统线程，ProcessHandle参数接收NULL, NtCurrentProcess() (-1) ,或指定进程句柄 三种情况 都可以用PsTerminateSystemThread结束掉
示例：
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VOID MyThread(PVOID StartContext) |
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{ |
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PEPROCESS pp=IoGetCurrentProcess(); |
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NTSTATUS status=PsTerminateSystemThread(0); |
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//以下实际上已经不执行了 |
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if(status == STATUS_INVALID_PARAMETER) |
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{ |
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KdPrint(("not systemthread")); |
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} |
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} |
11 |
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HANDLE OpenProcess(HANDLE Processid) |
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{ |
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NTSTATUS status; |
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PEPROCESS Process = NULL; |
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HANDLE hProcess = NULL; |
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UNICODE_STRING Unicode; |
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status = PsLookupProcessByProcessId(Processid, &Process); |
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if (NT_SUCCESS(status))//判断进程号是否存在 |
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{ |
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RtlInitUnicodeString(&Unicode, L"PsProcessType"); |
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//得到系统导出函数的地址和用户态的GetProcessAddress雷同 |
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PsProcessType = (POBJECT_TYPE*)MmGetSystemRoutineAddress(&Unicode); |
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if (PsProcessType) |
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{ |
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status = ObOpenObjectByPointer(Process,0,NULL,PROCESS_ALL_ACCESS,(POBJECT_TYPE) * PsProcessType, |
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KernelMode,&hProcess); |
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if (NT_SUCCESS(status)) |
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{ |
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//减少指针计数 |
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ObfDereferenceObject(Process); |
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return hProcess; |
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} |
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} |
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ObfDereferenceObject(Process); |
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} |
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return 0; |
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} |
39 |
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HANDLE outthread1,,outthread2,outthread3,outthread4,hproc; |
41 |
42 |
PsCreateSystemThread(&outthread1,THREAD_ALL_ACCESS,NULL,NULL,NULL,MyThread,NULL); |
43 |
PsCreateSystemThread(&outthread2,THREAD_ALL_ACCESS,NULL,NtCurrentProcess(),NULL,MyThread,NULL); |
44 |
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OBJECT_ATTRIBUTES oa; |
46 |
CLIENT_ID ci={(HANDLE)1472,0};//注意是进程ID！ |
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RtlZeroMemory(&oa,sizeof(oa)); |
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oa.Length=sizeof(oa); |
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ZwOpenProcess(&hproc,PROCESS_ALL_ACCESS,&oa,&ci); |
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PsCreateSystemThread(&outthread3,THREAD_ALL_ACCESS,NULL,hproc,NULL,MyThread,NULL); |
51 |
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hproc=OpenProcess((HANDLE)1472);//注意是进程ID！ |
53 |
PsCreateSystemThread(&outthread4,THREAD_ALL_ACCESS,NULL,hproc,NULL,MyThread,NULL); |
该函数创建的线程，其PETHRAD属性的CrossThreadFlags有PS_CROSS_THREAD_FLAGS_SYSTEM属性，不允许以挂起模式创建线程，，其他和普通的NtCreateThread差别不大！
然而在微软官方源码中，PS_CROSS_THREAD_FLAGS_SYSTEM属性即为SystemThread，尽管其所属进程可能是explorer.exe
https://www.0xaa55.com/forum.php?mod=viewthread&tid=1376&extra=page%3D6
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原文地址：http://www.cnblogs.com/findumars/p/5557152.html
