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Probabilistic number generation - Printable Version

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Probabilistic number generation - Mangix - 05-18-2013

I had this idea the other day but am wondering how to generate a wordlist/pipe it into hashcat.

Let's say you have a series of hashes, all of which have a 10 digit number as the input. Assuming the numbers are randomly generated, the probability of a single digit being 0-9 is 1/10. The probability of two of the same digits next to each other is 1/100, 3 digits is 1/1i000, and so on.

I first though permute could do this. While it generates all the permutations of 1234567890 just fine, there are duplicates when repeating one of the numbers(eg. 1224567890). If all 90+1 permutations for no repeating digits+1 repeating digits are calculated, that's 3.3 billion, clearly far too many duplicates.

My question is basically, any way to generate numbers where the least repeated digits are generated first?

RE: Probabilistic number generation - undeath - 05-19-2013

anything wrong with just using the markov generator?

RE: Probabilistic number generation - Mangix - 05-19-2013

The markov generator is inadequate as it looks for similarities in the input. I do not want this.

Furthermore, it works by selecting the first number and then going through the entire keyspace minus the first digit. Again I do not want this. A number like 1000000 is totally unlikely and should be tried last.

RE: Probabilistic number generation - atom - 05-21-2013

you can take a look at the maskprocessor -q option, i think it's partially what you want to do. its not completely what you are looking for but maybe you can use it inside a script.

RE: Probabilistic number generation - Mangix - 05-22-2013

After some thought, I have come to the realization that maskprocessor with the -q option is the most effective for my purposes. Funny as I wrote a tool 2 weeks ago that does the same thing.

What's still left is sorting the output. But that's a challenge for another time for me.

Thanks for the tip.

edit: As I don't see the -q option in hashcat, are there plans to implement it?

RE: Probabilistic number generation - atom - 05-25-2013

No but you can use a fifo to pipe it