Decompile with [https://dogbolt.org/](http://) --> Hex-RaysRelevant code:
```v10 = "Dr. Geschichter, just because he is evil, doesn't mean he doesn't have a favorite cereal.";  v9 = "Please enter the passphrase, which is based off his favorite cereal and entity: ";  v8 = "notf1aq{you-guessed-it---this-is-not-the-f1aq}";  v7 = "Xen0M0rphMell0wz";  v6 = 0;  for ( i = 0; i <= 32; ++i )  {    if ( v11[i] )      Buffer[i] = v7[i % 16] ^ v11[i];  }  Buffer[32] = 0;  puts(v10);  printf("%s", v9);  scanf("%s", Str1);  v6 = strcmp(Str1, v7);  if ( v6 )    puts(v8);  else    puts(Buffer);  return 0;```
Clearly, v7 should be our input! Send it to the program and get the flag!
	flag{XENO-DO-DO-DO-DO-DO-DOOOOO}