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POmsn plus script read/write memory
 

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    <p>I'm writing on a MSN Plus script, which is in fact javascript.<br> For interop with Windows there is a class called <code>Interop</code>.<br> With its static function <code>Call</code> one can call s specified function in a specified dll with up to 12 arguments.<br> My goal is to write a script which gets a process name out of the PID.<br> I've done everything right, but it still doesn't work. </p> <pre>function GetProcNameFromPID(pid) { var hnd = Interop.Call("kernel32", "CreateToolhelp32Snapshot", 2, 0); var handle = Interop.Call("kernel32", "GetCurrentProcess"); var StructP = Interop.Allocate(4+4+4+4+4+4+4+4+4+260);//*Allocate space for the ProcessEntry32 struct* var hnd_ptr = Interop.Allocate(4); var ress = Interop.Call("kernel32", "WriteProcessMemory", handle, StructP, StructP.size.DataPtr, 4, hnd_ptr); Debug.Trace(ReadInt(hnd_ptr, 0)); var res = Interop.Call("kernel32", "Process32FirstW", hnd, StructP.DataPtr); if(!res) { Debug.Trace("FAAAAIIIILLLLL / " + Interop.Call("kernel32", "GetLastError") + " / " + ress); } else { do { var pos = 0; ReadInt(StructP, pos); ReadInt(StructP, pos); var owpid = ReadInt(StructP, pos); ReadInt(StructP, pos); ReadInt(StructP, pos); ReadInt(StructP, pos); var parpid = ReadInt(StructP, pos); ReadInt(StructP, pos); ReadInt(StructP, pos); ReadInt(StructP, pos); var name = ReadString(pos, 50); if(pid == owpid) return name; StructP = Interop.Allocate(4+4+4+4+4+4+4+8+4+50); Interop.Call("kernel32", "WriteProcessMemory", handle, StructP.DataPtr, StructP.size.DataPtr, 4, null); } while(Interop.Call("kernel32", "Process32NextW", hnd, StructP.DataPtr) == true) } } function ReadInt(buffer, pos) { var res = 0; for(var i = 0; i >> 24; var b2 = addr >> 24; var b3 = addr >> 24; var b4 = addr >> 24; return b4 + b3*256 + b2*256*256 + b1*256*256*256; } </pre> <hr> <p>The <code>Process32FirstW</code> function always suceeds, but the struct is empty.<br> The <code>WriteProcessMemory</code> function suceeds, too. But the number of written bytes is always 0. </p>
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