As Matt posted above - that the password was actually HIIDHEED, here's the other file that we didn't have:
EDIT: It's a repeating string, with slashes in it. All of them are names of moons (all of which I think of planets (including dwarfs) in our solar system.
The characters after each slash (THANKS DIZMA) came out to say
:
useSsuitePicselSecuritySaveus
Using the steg function of SSuite Picsel Security, comparing the original HD image and vital.png gave the string
:
BmzPmbtzueMfxmeBdayqftqgeBmzpadmQbuyqftqgeVmzgeMqsmqazYuymeYqftazqMzftqBmxxqzqQzoqxmpgeFqftkeFqxqefaOmxkbeaPuazqTqxqzqBaxkpqgoqeDtqmFufmzTkbqduazUmbqfgeWuhugcUvudmcBtaqnqBmmxumcEwmftuMxnuadujNqntuazzQddumbaEwaxxEumdzmcFmdcqcSdqubTkddawwuzVmdzemjmFmdhaeYgzpuxrmduNqdsqxyudZmdhuEgffgzsdTmfuRmdnmgfuFtdkydMqsudNqefxmEgdfgdWmduKyudXasqRadzvaf
When
shifted with ROT-14 (THANKS MATT) gave us the string
:
PanDaphnisAtlasPrometheusPandoraEpimetheusJanusAegaeonMimasMethoneAnthePalleneEnceladusTethysTelestoCalypsoDioneHelenePolydeucesRheaTitanHyperionIapetusKiviuqIjiraqPhoebePaaliaqSkathiAlbiorixBebhionnErriapoSkollSiarnaqTarqeqGreipHyrrokkinJarnsaxaTarvosMundilfariBergelmirNarviSuttungrHatiFarbautiThrymrAegirBestlaSurturKariYmirLogeFornjot
So what next?