Date: Mon, 22 Feb 2016 18:10:02 +0100 From: Marek Wrzosek <marek.wrzosek@...il.com> To: john-users@...ts.openwall.com Subject: Re: Cracking zip files Hi list, I've two zip files, both with password 'password'. In one (some_files.zip) there is file hello with 'Hello, world!' in it ans hello.zip with previous hello file. JtR is cracking this zip without problems. Second file - some_pdfs.zip contains two test pages in pdf, and JtR only response is: No password hashes loaded (see FAQ) Here are outputs of zip2john for both zip files: some_files.zip:$zip2$*0*1*0*22577113145210b4*53db*e*528cd4370de59591f699fa532102*7a35bb447cf2cd3e3d62*$/zip2$:::::some_files.zip some_pdfs.zip:$zip2$*0*1*0*4415572909d35406*1eb1*19be3*ZFILE*some_pdfs.zip*19c71*19cbc*ba511bb0d50f478e281f*$/zip2$:::::some_pdfs.zip I suppose that first one is OK, because is small and JtR doesn't need some_file.zip to crack it, it only need output of zip2john. Both zip files are in JtR's working directory. https://dl.dropboxusercontent.com/u/68111957/some_files.zip https://dl.dropboxusercontent.com/u/68111957/some_pdfs.zip Best Regards, Marek W dniu 22.02.2016 o 15:59, Alex pisze: > Hi, > > After some experimenting, and help from Claudio on this list, I was > able to figure out that there's something either wrong with the > zip2john file or john itself: > > $ ./run/john --format:zip --test > Will run 8 OpenMP threads > Benchmarking: ZIP, WinZip [PBKDF2-SHA1 256/256 AVX2 8x]... (8xOMP) DONE > Raw: 10816 c/s real, 2072 c/s virtual > $ file zipfile.zip > zipfile.zip: Zip archive data > $ ./run/zip2john zipfile.zip > zipfile.john > $ ./run/john zipfile.john > Using default input encoding: UTF-8 > No password hashes loaded (see FAQ) > > $ cat zipfile.john > zipfile.zip:$zip2$*0*3*0*ea66ffef1968f19b4f512b75d35e1619*f158*348b*ZFILE*zipfile.zip*15edb*15f41*65556849ac4ebd6f824d*$/zip2$:::::zipfile.zip > > I also tried creating a new zip file, and it was able to start > cracking that one, so I know my installation is working properly. > > As I mentioned before, the previous install of John I had on the > system was able to begin cracking this zip file without problem. > > Ideas greatly appreciated. > Thanks, > Alex > > -- Marek Wrzosek marek.wrzosek@...il.com
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