dll木马的写法（The writing of DLL Trojan horse）.docVIP

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2017-09-05 发布于河南
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dll木马的写法（The writing of DLL Trojan horse）.doc

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dll木马的写法（The writing of DLL Trojan horse）

dll木马的写法（The writing of DLL Trojan horse） Trojan operation is the key to hide unnoticed is king. To hide, to hide the process, Windows operating system in the process of Mode of operation, so most of the operating system. The task manager can see the current running process, so some people HOOK enumeration process function The number, so the task manager does not display the Trojan process, there are people who have their Trojan registered as running, task manager service. Do not display only Is a process still exists, the best way is to let the process does not exist, let the horse as a thread other processes to run the.Windows. The concept of DLL system is proposed, the API system is through the form of DLL, dynamic application links to call API to DLL in DLL Only one copy in memory can meet different application calls, so you can put the Trojans into DLL files, let him as part of a process Operation, the best part of a systematic process, it is generally difficult to see a loading process which DLL, it is very difficult to find this kind of Trojan (with IceSword can see DLL module process). A write a DLL trojan: The use of IDE: Visual C++ 6 Visual Studio.NET 2003/2005. First, the establishment of a Win32 Dynamic-Link Library A simple DLL project project. The establishment of projects, and then you will see: BOOL APIENTRY DllMain (HANDLE hModule / / module handle. DWORD ul_reason_for_call / / call sign. LPVOID lpReserved / / return data. ) { Return TRUE; } This is the entrance point of the DLL function, can only do some simple work. The entrance point initialization function and the WinMain wWinMain _tWinMain main of the four standard functions are completely different, DllMain will be called many times, the four entrance points only called by the system at a time. By the way the structure of DLL file and exe file is exactly the same. DWORD ul_reason_for_call / / call sign. This parameter is used to determine the transfer system, call the DllMain function when the