There seems to be some grey areas in regards to all the information - the swastika for example is totally banned, however the sale of stamps and Third Reich postcards etc. is perfectly legal even if it depicts a swastika. The image of Hitler is also fine - in fact as a world leader his image appears on more notes and stamps bar Queen Elizabeth II.
All forms of the swastika are banned from public display - curved, straight, left or right handed. This is punishable under Strafgesetzbuch section 86a laws or "use of symbols of unconstitutional organisations". However as you can imagine this is nothing more than a ad hock law which is constantly changed to suit the system.
In regards to the runes themselves - the Algiz rune which is most commonly called the Life rune, or Lebenrune in German is allowed, as is the Odal (Ethel) rune if used is a historical symbol. I have seen some websites that state this sign is now banned - which would not surprise me. All the other runes are legal - except the Sieg rune and the Double Sieg rune SS symbols.
Some years back a court case ruled that only National Socialist slogans and phrases written in German were illegal, so to use the phrases 'Sieg Heil', 'Blut und Boden' or 'Meine Ehre Heißt Treue' is punishable, however 'Hail Victory' if used in English was not. To sideline for one moment - the phrase 'White Power' itself was never used in National Socialist Germany - and you'll find very little evidence of white supremacist teachings in Third Reich books or publications. The phrase 'White Power' was an American invention from the 1950's - namely via George Lincoln Rockwell. The German emphasis was on racial purely and nobility - traits ALL races have the right to pursue. Still - that FACT doesn't stop the enemies of our volk spreading their lies!
Other banned symbols include the Wolf Hook - even though the symbol appears on many (possibly hundreds) of heraldic shields and monuments. Eternal Flame - a symbol used by many nationalist groups across Europe and the Celtic Cross / Sunwheel symbol, which itself is thousands of years old. the Totenkopt-Deaths Head insignia is banned, even though the symbol pre-dates National Socialist Germany and comes from the Prussian Hussar regiments (also used by Polish Hussars). The Black Sun for sometime escaped this ban, but I'm not sure if that is still the case? And of course the greatest irony is that symbols like the communist star, hammer and sickle, christian cross and star of david, all of which symbolise movements or ideas which have killed countless millions, far more than all the deaths from WW2 combined - are perfectly legal!