[Solved] John The Ripper, doesnt seem to work properly

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[Solved] John The Ripper, doesnt seem to work properly

Postby bester69 » 2018-08-12 15:40

Hi,
Ive installed john ripper with snap, and now, im using with force brute for unecrypting zip files..

Im using the following set of characters for encrypting, 'a-z0-9' and a six character word like this:
VRAN="$(cat /dev/urandom | tr -dc 'a-z0-9' | fold -w 6 | head -n 1)"

For john and the prevous key im using the set of characters: --incremental:LowerNum
sudo snap run john-the-ripper --incremental:LowerNum johnpass.hash

The problem Ive got, its that sometimes It only takes three minits to decode the 6 characters password, and sometimes seems never ends.. I fell something is not working properly.

Output
system_key.go:127: cannot determine nfs usage in generateSystemKey: cannot parse /etc/fstab: expected between 3 and 6 fields, found 7
Using default input encoding: UTF-8
Loaded 1 password hash (PKZIP [32/64])
Press 'q' or Ctrl-C to abort, almost any other key for status
Last edited by bester69 on 2018-08-12 16:57, edited 1 time in total.
bester69 wrote:There is nothing to install in linux, from time to time i go to google searching for something fresh to install in linux, but, there is nothing
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Re: John The Ripper, doesnt seem to work properly

Postby 4D696B65 » 2018-08-12 15:57

Try the one from debain repo
https://packages.debian.org/stretch/john
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Re: John The Ripper, doesnt seem to work properly

Postby bester69 » 2018-08-12 16:45

4D696B65 wrote:Try the one from debain repo
https://packages.debian.org/stretch/john

Ok thanks, but how do i get zip2john, pdf2john, etc.. They come with snap version, but I dont see them in debian, that why i installed snap version
bester69 wrote:There is nothing to install in linux, from time to time i go to google searching for something fresh to install in linux, but, there is nothing
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Re: John The Ripper, doesnt seem to work properly

Postby bester69 » 2018-08-12 16:55

Sorry guys I think its working well, I didnt realise what was happening in the decoding

In mY case Ive got mints time duration for a 4 digits characters word, so Its normal, from that number of characters on, times will grow exponential.

4 digits (Ive got times between seconds to 7 minits)
35 (exp4) = 1,5 Millons posibilities
35 (exp5) = 52 Millons posibilities >> X minits x52 >> 7x52= 350 minits >> So easily, between some minits to 1-7 hours

A guess 6 characters might take you to some days in a low cpu as mine.
bester69 wrote:There is nothing to install in linux, from time to time i go to google searching for something fresh to install in linux, but, there is nothing
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