command line interface to mBank online banking system
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This is mbank-cli, a basic command-line interface to the online banking system of mBank.

Warning: You use mbank-cli on your own risk! The software is provided “as is”, without warranty of any kind.

Warning: mbank-cli uses the web interface at (or, or which is subject to change unexpectedly.


  • Perl (≥ 5.10) with the following Perl modules:
    • HTML::Form
    • HTML::HeadParser
    • HTML::TreeBuilder
    • IO::Socket::SSL (≥ 1.31)
    • IPC::Run (optionally, for password encryption)
    • JSON or JSON::PP (the latter is a core module since Perl 5.14)
    • LWP::UserAgent (≥ 5.802)
    • LWP::Protocol::https
    • Net::HTTPS
    • Net::SSLeay
    • Term::ReadLine::Gnu (only required by the “configure” command)
  • GnuPG (optionally, for password encryption)

Cheat sheet for free software distributions

Arch Linux:

pacman -S perl-html-form perl-html-tree perl-lwp-protocol-https
pacman -S perl-ipc-run gnupg  # for password encryption
pacman -S perl-term-readline-gnu  # for the “configure” command

CentOS 6:

yum install perl-core perl-libwww-perl perl-IO-Socket-SSL perl-HTML-Tree perl-JSON
yum install perl-IPC-Run gnupg2  # for password encryption
yum install perl-Term-ReadLine-Gnu  # for the “configure” command

Debian 7 (wheezy) or newer:

apt-get install libwww-perl libhtml-form-perl
apt-get install libipc-run-perl gnupg  # for password encryption
apt-get install libterm-readline-gnu-perl  # for the “configure” command

Cheat sheet for cpanm(1)

cpanm HTML::Form HTML::HeadParser HTML::TreeBuilder IO::Socket::SSL JSON::PP LWP::UserAgent LWP::Protocol::https Net::HTTPS Net::SSLeay
cpanm IPC::Run  # for password encryption
cpanm Term::ReadLine::Gnu  # for the “configure” command

CA certificate

mbank-cli has to verify that the server certificate has been signed by a trusted CA (certificate authority). Unlike many other TLS clients, it doesn't trust all the CAs whose certificates are installed system-wide, but only DigiCert High Assurance EV Root CA, which is known to be the root CA for mBank.

mbank-cli tries to find the certificate in the system certificate directory; if that fails, it uses ca.crt from the same directory as the script itself.

This procedure might not be adequate when the program is installed system-wide on some operating systems. Packagers/administrators might want to patch the get_default_ca_path() subroutine in such case.