Document Perl libs installation

Add a 'cpanfile' for easy installation of everything needed for running
the various converters.

Add a separate 'cpanfile.pass_gen' for pass_gen.pl as there's a lot of
dependencies and that tool is not a converter.

Add instructions to README-UBUNTU.

Author: magnumripper

doc/INSTALL-UBUNTU

@@ -133,6 +133,18 @@ build CPU fallback chains for any x86-64 CPU.
 
     ./john --test
 
+=== Install all Perl libs required for things like keepass2john.pl
+
+    A few are available as Ubuntu packages:
+
+    sudo apt-get install libcompress-raw-lzma-perl libdigest-md5-perl libimage-exiftool-perl libmime-base64-perl libnet-ldap-perl libnet-pcap-perl
+
+    To get everything needed, you have to install from CPAN:
+
+    sudo apt install cpanminus
+    cd ~/src/john/run
+    cpanm --installdeps .
+
 === Install all Python modules required for things like pcap2john.py
 
     Install most of them as Ubuntu packages (if you like):

run/cpanfile

@@ -0,0 +1,28 @@
+# cpanfile for John the Ripper (perl scripts)
+#
+# This file lists dependencies for the .pl scripts in the run/ directory,
+# with the exception of pass_gen.pl, which has its own separate cpanfile.
+# To install dependencies, use a tool like 'cpanm':
+#   cpanm --installdeps .
+#
+# For "pass_gen.pl" there are lots of requirements usually not needed for
+# the casual user. To install them:
+#   cpanm --installdeps --cpanfile cpanfile.pass_gen .
+#
+requires 'Compress::Raw::Lzma';
+requires 'Data::Plist';
+requires 'Data::Plist::BinaryReader';
+requires 'Digest::MD5';
+requires 'Encode';
+requires 'Image::ExifTool';
+requires 'Getopt::Long';
+requires 'List::Util';
+requires 'MIME::Base64';
+requires 'Net::LDAP';
+requires 'Net::Pcap';
+requires 'Net::Radius::Dictionary';
+requires 'Net::Radius::Packet';
+requires 'NetPacket::Ethernet';
+requires 'NetPacket::IP';
+requires 'NetPacket::UDP';
+requires 'SHA';

run/cpanfile.pass_gen

@@ -0,0 +1,43 @@
+# cpanfile for John the Ripper pass_gen.pl
+#
+# You should probably install the normal cpanfile too:
+#   cpanm --installdeps .
+#
+# Then install this file:
+#   cpanm --installdeps --cpanfile cpanfile.pass_gen .
+#
+requires 'Convert::EBCDIC';
+requires 'Crypt::AuthEnc::CCM';
+requires 'Crypt::CBC';
+requires 'Crypt::Cipher::AES';
+requires 'Crypt::Cipher::Blowfish';
+requires 'Crypt::DES';
+requires 'Crypt::DES_EDE3';
+requires 'Crypt::Digest::RIPEMD128';
+requires 'Crypt::Digest::RIPEMD160';
+requires 'Crypt::Digest::RIPEMD256';
+requires 'Crypt::Digest::RIPEMD320';
+requires 'Crypt::ECB';
+requires 'Crypt::Eksblowfish::Bcrypt';
+requires 'Crypt::Eksblowfish::Uklblowfish';
+requires 'Crypt::Mode::CFB';
+requires 'Crypt::RC4';
+requires 'Crypt::Rhash';
+requires 'Crypt::ScryptKDF';
+requires 'Crypt::UnixCrypt_XS';
+requires 'Digest';
+requires 'Digest::BLAKE2';
+requires 'Digest::GOST';
+requires 'Digest::Haval256';
+requires 'Digest::Keccak';
+requires 'Digest::MD2';
+requires 'Digest::MD4';
+requires 'Digest::MD5';
+requires 'Digest::SHA';
+requires 'Digest::SHA3';
+requires 'Digest::Tiger';
+requires 'Encode';
+requires 'Getopt::Long';
+requires 'MIME::Base64';
+requires 'Math::BigInt';
+requires 'Net::SSLeay';