EXE1呼叫EXE2來載入DLL實現隱藏功能

2021-06-20 15:54:40 字數 2394 閱讀 8956

這種方法不易察覺,其實還能做出很多其他的型別,這裡只是學習··································

context.eip = (dword)(((pshell_code)buffer)->szinstruction);

改為context.eax = (dword)(((pshell_code)buffer)->szinstruction);

執行緒在ring3的第一行**時,eax存放的是執行緒函式起始位址

這個應該更穩妥的,主線程暫停在ntdll空間,由ntdll->exe入口點 中間還幹了事,

學習於   

自己修改了下結構········································

主cpp   exeofshellcodedllinject  **:

#include "stdafx.h"

#include typedef struct tempdata

;char shellcode = ;

//pushad

//push 0x12345678

//mov eax,0x12345678

//call eax

//popad

//jmp 0*********

struct tempdata g_data = ;

int _tmain(int argc, _tchar* argv)

; process_information pi = ;

context context;

//生成暫停exe去做事情

if (!createprocess(szexepath,null,null,null,false,create_suspended,null,null,&si,&pi))

//設定 context_integer 才能得到暫存器值

context.contextflags = context_integer;

getthreadcontext(pi.hthread,&context);

lpvoid lpdata = virtualallocex(pi.hprocess,null,sizeof(g_data)+1,mem_commit | mem_reserve,page_execute_readwrite);

if (lpdata == null)

*(dword*)(g_data.szshllcode+0x2) = (dword)lpdata;

*(dword*)(g_data.szshllcode + 0x7) = (dword)loadlibrarya;

*(dword*)(g_data.szshllcode + 15) = (dword)(context.eax - (dword)((char*)lpdata + sizeof(max_path)+ 14) -5 );

//這裡面的14為 g_data.szshllcode 起始到最後乙個需要修改處的長度

if (!writeprocessmemory(pi.hprocess,lpdata,&g_data,sizeof(g_data),null))

context.eax = (dword)(((tempdata*)lpdata)->szshllcode);

resumethread(pi.hthread);

return 0;

}

將    ordinarymsg.exe    shellcodedllinject.dll   和主exe放在同一目錄下可以執行成功

ordinarymsg.exe **:

#include "stdafx.h"

#include #pragma comment( linker, "/subsystem:windows /entry:maincrtstartup" )

int main(int argc, _tchar* argv)

shellcodedllinject.dll  **:

#include "stdafx.h"

bool apientry dllmain( hmodule hmodule,

dword ul_reason_for_call,

lpvoid lpreserved

)return true;

}

最後效果為;

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