John the Ripper Jumbo

git clone https://github.com/openwall/john.git

Installation code required packages

sudo apt-get update

sudo apt-get install libssl-dev

sudo apt-get install build-essential

sudo apt-get install libbz2-dev

Enter src to start compiling and installing

cd john/src

Compile to enable gpu

./configure --enable-opencl

make -s clean && make -sj4

Check how many GPUs and CPUs John can use

./john --list=opencl-devices

Using 4CPU 8RAM cracking speed, it takes 103 hours to crack five lowercase English numbers

Using 4 Tesla T4 GPUs, it only takes 10 hours to crack five lowercase English numbers, which is 10 times faster (the size of this 7z file is about 1G)

---

Decompress zip archives

~/john/run/john --format=zip-opencl --mask=[mycharset.chr] --min-length=1 --max-length=12 solomon_hash.txt --devices=2,3,4,5 --fork=4

---

Crack 7z compressed files

perl 7z2john.pl ~/japan.7z > japan7zhash.txt

If you encounter the following error, it means that the Compress::Raw::Lzma module is missing

Can't locate Compress/Raw/Lzma.pm in @INC (you may need to install the Compress::Raw::Lzma module) (@INC contains: /etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.32.1 /usr/local/share/perl/5.32.1 /usr/lib/x86_64-linux-gnu/perl5/5.32 /usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl-base /usr/lib/x86_64-linux-gnu/perl/5.32 /usr/share/perl/5.32 /usr/local/lib/site_perl) at 7z2john.pl line 6.

BEGIN failed -- compilation aborted at 7z2john.pl line 6.

You need to run the following command to install the missing package:

sudo apt-get install liblzma-dev

sudo cpan Compress::Raw::Lzma

~/john/run/john --format=7z-opencl --mask=[mycharset.chr] --min-length=1 --max-length=8 /home/qoo7972365/japan7zhash.txt --devices=1,2,3,4 --fork=4

---

./john/run/john --mask=tim my?l?l?l?l?l --min-length=10 --max-length=10 japan7zhash.txt