I’m an aspiring writer, working on a spy-thriller novel with Tor as part of the plot. Is it hypothetically possible to hack an individual Onion Router to discover the location of the previous router?
In the novel, the bad guy will communicate using Tor. The good guy will then discover the bad guy's identity by backtracking through the bad guy’s Tor circuit, hacking each router, one-by-one, until he reaches the bad guy’s computer. It is essentially a ‘treasure hunt’ with Onion Routers as clues.
Moreover, I want the protagonist to physically travel to each router to hack it. That way I can fit in cool locations. For instance, the exit router could be in the mansion of a Russian mobster. So the protagonist travels to Moscow and breaks into the mansion and hacks the router. The exit router then tells him where to find the middle router: an opera house in Vienna. So he goes to Vienna and tries to break into the opera house. Etc., etc., until he reaches the bad guy’s computer.
To sum up, then, is it possible (even hypothetically) to hack each router individually, after the data has been sent? Please help! I realize that this is an atypical request, but I would be grateful for any advice!