powershell - Extracting Binary Data from MSI -


i'm trying extract binary data msi file using powershell. can other piece of data, can't seem extract binary information.

$query = "select data binary name = 'bannrbmp'" $view = $database.gettype().invokemember("openview", "invokemethod", $null, $database, ($query)) $view.gettype().invokemember("execute", "invokemethod", $null, $view, $null) $record = $view.gettype().invokemember("fetch", "invokemethod", $null, $view, $null)  $binarydata = $record.gettype().invokemember("stringdata", "getproperty", $null, $record, 1)

it breaks on final line, leads me believe issue exists "stringdata", way off target. here table looks when opened in orca. enter image description here

this code complete when extracting textual data below.

$query = "select component featurecomponents feature = 'orcahelp'" $view = $database.gettype().invokemember("openview", "invokemethod", $null, $database, ($query)) $view.gettype().invokemember("execute", "invokemethod", $null, $view, $null) $record = $view.gettype().invokemember("fetch", "invokemethod", $null, $view, $null)  $data = $record.gettype().invokemember("stringdata", "getproperty", $null, $record, 1)

enter image description here

i couldn't seem find on web, if able appreciated.

this c++ code fragment extracts binary , writes disk. use it, or @ least see flow , stream read. these basic win32 api calls scripting languages call, no interop required. need includes of stdio.h, windows.h, msiquery.h , packaging in program or dll call - don't know c++ comfort level. should work ok, though i've not tested recently. 

pmsihandle hdatabase; pmsihandle hbinaryview; pmsihandle hbinaryrecord;  //get handle active database. need view manipulation uint nr = msiopendatabase ("some.msi", msidbopen_readonly, &hdatabase);  //get view of binary table based on sql query char squery []  = {"select * binary name='somebinary'"}; // binary  nr = msidatabaseopenview(hdatabase, squery, &hbinaryview); if (nr!= error_success)    return 1;  //msiviewexecute needs to called msifetchview. //we pass null because query above granular can //so not need take further specifying additional value. nr = msiviewexecute(hbinaryview, null);   if (nr == error_success)     //fetch view record.  because can     //streams out of record , not out of view.     nr = msiviewfetch(hbinaryview, &hbinaryrecord);  //make sure entry found in table if (nr == error_success) {      //build path write file     tchar filename [max_path] = {"somefile.ext"};      char bstream [4096] = {0};     bool bokay=true;      handle hfile = createfile(filename, generic_write, 0, 0,                          create_always, file_attribute_normal, 0);     if (hfile == invalid_handle_value)         nr = -1;     else     {         long ntotal = 0;                     long nattr = 0;         dword nwritten, nbuffer;                 {   // read stream buffer, 1023 bytes @ time             nbuffer=1023;             nr = msirecordreadstream(hbinaryrecord, 2, bstream, &nbuffer); // binary & cab 2             if ((error_success == nr) && (nbuffer > 0))             {                 //write buffer file.                  nr = writefile(hfile, bstream, nbuffer, &nwritten, null);                  if (nr != 0)// 0 bad                     ntotal = ntotal + nbuffer; // debug                 else                     bokay = false;             }             else             if (nr != error_success)                 bokay = false;         } // record record stream         while (bokay == true && (nbuffer > 0));          // done copying file         closehandle(hfile);         }// create file      // needed 1 row, close view     msiviewclose(hbinaryview);      // done query     msiclosehandle(hbinaryrecord); }  // done binary table msiclosehandle(hbinaryview); // done msi database msiclosehandle(hdatabase);

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