mirror of https://github.com/MISP/misp-training
644 lines
22 KiB
TeX
Executable File
644 lines
22 KiB
TeX
Executable File
% DO NOT COMPILE THIS FILE DIRECTLY!
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% This is included by the other .tex files.
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\begin{frame}[t,plain]
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\titlepage
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\end{frame}
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\begin{frame}
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\frametitle{What problems are we trying to tackle?}
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\begin{itemize}
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\item \textbf{Prevent} default MISP behaviors to happen
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\item \textbf{Hook} specific actions to run callbacks
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\item Use-cases:
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\begin{itemize}
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\item Prevent publication of events not passing sanity checks
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\item Prevent querying thrid-party services with sensitive information
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\item Send notifications in a chat rooms
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\item And much much more...
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\end{itemize}
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\end{itemize}
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\end{frame}
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\begin{frame}
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\frametitle{What already exists in MISP?}
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\includegraphics[width=16px]{pictures/python-logo.png}\hspace*{0.5em} \textbf{MISP API / PyMISP}
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\begin{itemize}
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\item Needs CRON Jobs in place
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\item Heavy for the server
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\item Not realtime
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\end{itemize}
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\vspace*{1em}
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\includegraphics[width=16px]{pictures/zeromq.png}\hspace*{0.5em} \textbf{PubSub channels}
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\begin{itemize}
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\item After the actions happen: No feedback to MISP
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\item Tougher to put in place \& to share
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\item Full integration amounts to develop a new tool
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\end{itemize}
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\end{frame}
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\begin{frame}
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\frametitle{Simple automation made easy}
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\begin{center}
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\includegraphics[width=0.3\linewidth]{pictures/automation.png}
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\end{center}
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\begin{itemize}
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\item Why?
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\begin{itemize}
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\item Everyone loves \textbf{simple automation}
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\item \textbf{Visual} dataflow programming
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\item Users want \textbf{more control}
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\end{itemize}
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\item How?
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\begin{itemize}
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\item \textbf{Drag \& Drop} editor
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\item Prevent actions \textbf{before they happen}
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\item Flexible \textbf{Plug \& Play} system
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\item \textbf{Share} workflows, \textbf{debug} and \textbf{replay}
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\end{itemize}
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\end{itemize}
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\end{frame}
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\begin{frame}
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\frametitle{Content of the presentation}
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\begin{itemize}
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\item MISP Workflows fundamentals
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\item Demo by examples
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\item Get started
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\item Using the system \& how it can be extended
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\end{itemize}
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\vspace*{1em}
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\begin{center}
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\frame{\includegraphics[width=0.7\linewidth]{pictures/overview.png}}
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\end{center}
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\end{frame}
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\section{Workflow - Fundamentals}
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\begin{frame}
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\frametitle{How does it work}
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\begin{center}
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\frame{\includegraphics[width=0.4\linewidth]{pictures/event-condition-action.png}}
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\end{center}
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\begin{enumerate}
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\item An \textbf{event} happens in MISP
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\item Check if all \textbf{conditions} are satisfied
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\item Execute all \textbf{actions}
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\begin{itemize}
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\item May prevent MISP to complete its original event
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\end{itemize}
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\end{enumerate}
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\end{frame}
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\begin{frame}
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\frametitle{What kind of events?}
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\includegraphics[width=60px]{pictures/sc-event.png}
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\vspace*{0.5em}
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\begin{itemize}
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\item New MISP Event
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\item Attribute has been saved
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\item New discussion post
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\item New user created
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\item Query against third-party services
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\item ...
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\end{itemize}
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\vspace*{1em}
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In MISP Workflow terminology, supported events are called \textbf{Triggers}
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\end{frame}
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\begin{frame}
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\frametitle{What kind of conditions?}
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\includegraphics[width=70px]{pictures/sc-condition.png}
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\vspace*{0.5em}
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\begin{itemize}
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\item An MISP Event is tagged with \texttt{tlp:red}
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\item The distribution an Attribute is a sharing group
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\item The creator organisation is \texttt{circl.lu}
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\item Or any other \textbf{generic} conditions
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\end{itemize}
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\vspace*{1em}
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In MISP Workflow terminology, these are also called \textbf{Logic modules}
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\end{frame}
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\begin{frame}
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\frametitle{What kind of actions?}
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\includegraphics[width=60px]{pictures/sc-action.png}
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\vspace*{0.5em}
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\begin{itemize}
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\item Send an email notification
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\item Perform enrichments
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\item Send a chat message on MS Teams
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\item Attach a local tag
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\item ...
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\end{itemize}
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\vspace*{1em}
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In MISP Workflow terminology, these are also called \textbf{Action modules}
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\end{frame}
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\begin{frame}
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\frametitle{What is a MISP Workflow?}
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\begin{itemize}
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\item Sequence of all nodes to be executed in the specified order
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\item Basically the whole connected graph.
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\item Workflows can be enabled / disabled
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\item Workflows are always linked to a \textbf{trigger}
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\end{itemize}
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\begin{center}
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\frame{\includegraphics[width=1.0\linewidth]{pictures/simple-workflow.png}}
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\end{center}
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\end{frame}
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\begin{frame}
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\frametitle{Workflow execution for Event publish}
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\begin{itemize}
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\setlength\itemsep{1em}
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\item[] \hspace*{-2em}\includegraphics[width=16px]{pictures/sc-event-icon.png} \hspace*{0.25em} An Event is about to be published
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\begin{itemize}
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\item The workflow for the \texttt{event-publish} trigger starts
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\end{itemize}
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\item[] \hspace*{-2em}\includegraphics[width=16px]{pictures/sc-condition-icon.png} \hspace*{0.25em} Conditions are evaluated
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\item[] \hspace*{-2em}\includegraphics[width=16px]{pictures/sc-action-icon.png} \hspace*{0.25em} Actions are executed
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\begin{itemize}
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\setlength\itemsep{0.75em}
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\item {\bf\color{green!50!black}success}: Continue the publishing action
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\hspace*{-4em}\includegraphics[width=1.0\textwidth]{pictures/log-entry-publish-success.png}
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\item {\bf\color{red}failure} | \texttt{\color{red}blocked}: Stop publishing and log the reason
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\hspace*{-4em}\includegraphics[width=1.0\textwidth]{pictures/log-entry-publish-blocked.png}
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\end{itemize}
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\end{itemize}
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\end{frame}
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\begin{frame}
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\frametitle{Blocking and non-blocking}
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Two types of workflows:
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\vspace{0.5em}
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\begin{itemize}
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\item[] \hspace*{-2em}\includegraphics[width=48px]{pictures/blocking-workflow.png} Workflows
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\begin{itemize}
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\item Can prevent / block the original event to happen
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\item If a \textbf{blocking module}\includegraphics[width=10px]{pictures/blocking-module.png} blocks the action
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\end{itemize}
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\vspace{0.5em}
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\item[] \hspace*{-2em}{\bf Regular} Workflows execution outcome has no impact
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\begin{itemize}
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\item \textbf{Blocking modules} No way to prevent something that has already happened
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\end{itemize}
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\begin{center}
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\includegraphics[width=0.4\linewidth]{pictures/time-machine.png}
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\end{center}
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\end{itemize}
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\end{frame}
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\begin{frame}
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\frametitle{Workflow - Action modules}
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% \begin{center}
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% \includegraphics[width=0.6\linewidth]{pictures/module-type.png}
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% \end{center}
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\begin{itemize}
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\item \includegraphics[width=12px]{pictures/sc-action-icon.png} \textbf{action} modules: Allow to executes operations or custom scripts
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\begin{itemize}
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\item Tag operations
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\item Send notifications
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\item Webhooks
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\end{itemize}
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\end{itemize}
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\begin{center}
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\includegraphics[width=1.0\linewidth]{pictures/action-module-index.png}
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\end{center}
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\end{frame}
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\begin{frame}
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\frametitle{Workflow - Logic modules}
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\begin{itemize}
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\item \includegraphics[width=12px]{pictures/sc-condition-icon.png} \textbf{logic} modules: Allow to redirect the execution flow.
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\begin{itemize}
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\item IF conditions
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\item Delay execution
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\end{itemize}
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\end{itemize}
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\begin{center}
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\includegraphics[width=1.0\linewidth]{pictures/logic-module-index.png}
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\end{center}
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\end{frame}
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\begin{frame}
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\frametitle{Sources of Workflow modules (1)}
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\begin{itemize}
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\item Built-in \textbf{default} modules
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\begin{itemize}
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\item Part of the MISP codebase
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\item Get in touch if you want us to increase the selection!
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\end{itemize}
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\end{itemize}
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\begin{center}
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\includegraphics[width=1.0\linewidth]{pictures/module-buffet.png}
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\end{center}
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\end{frame}
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\begin{frame}
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\frametitle{Sources of Workflow modules (2)}
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User-defined \textbf{custom} modules
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\vspace*{0.5em}
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\begin{columns}
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\begin{column}{0.5\textwidth}
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\begin{itemize}
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\item Written in PHP
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\item Extend existing modules
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\item MISP code reuse
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\end{itemize}
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\end{column}
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\begin{column}{0.5\textwidth}
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\includegraphics[width=1.0\linewidth]{pictures/php-joke.jpg}
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\end{column}
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\end{columns}
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\end{frame}
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\begin{frame}
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\frametitle{Sources of Workflow modules (3)}
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Modules from the \includegraphics[width=0.20\linewidth]{pictures/misp-module-icon.png} \textbf{enrichment service}
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\vspace*{0.5em}
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\begin{columns}
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\begin{column}{0.50\textwidth}
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\begin{itemize}
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\item Written in Python
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\item Can use any python libraries
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\item Plug \& Play
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\end{itemize}
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\end{column}
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\begin{column}{0.50\textwidth}
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\includegraphics[width=1.0\linewidth]{pictures/python-joke.png}
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\end{column}
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\end{columns}
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\end{frame}
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\begin{frame}
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\frametitle{Triggers currently available}
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Currently 10 triggers can be hooked. 3 being \includegraphics[width=36px]{pictures/blocking-workflow.png}.
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\begin{center}
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\includegraphics[width=1.0\linewidth]{pictures/triggers.png}
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\end{center}
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\end{frame}
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\begin{frame}
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\frametitle{Demo by examples}
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\begin{enumerate}
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\item Send an email to \textbf{all} when a new event is created
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\item Block queries on 3rd party services when \textbf{tlp:red} or \textbf{PAP:red}
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\end{enumerate}
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\end{frame}
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\section{Workflow - Getting started}
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\begin{frame}
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\frametitle{Getting started with workflows (1)}
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\begin{center}
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\includegraphics[width=0.9\linewidth]{pictures/workflow-release.png}
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\end{center}
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\begin{enumerate}
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\item Update your MISP server
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\item Update all your sub-modules
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\end{enumerate}
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\begin{center}
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\includegraphics[width=0.6\textwidth]{pictures/upgrade-people.jpeg}
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\end{center}
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\end{frame}
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\begin{frame}
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\frametitle{Getting started with workflows (2)}
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Review MISP settings:
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\begin{enumerate}
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\item Make sure \texttt{\bf MISP.background\_jobs} is turned on
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\item Make sure workers are \textbf{up-and-running} and healthy
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\item Turn the setting \texttt{\bf Plugin.Workflow\_enable} on
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\end{enumerate}
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\begin{center}
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\includegraphics[width=1.0\textwidth]{pictures/settings-2.png}
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\end{center}
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\end{frame}
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\begin{frame}
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\frametitle{Getting started with workflows (3)}
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[optional] Wanna enjoy \includegraphics[width=0.17\linewidth]{pictures/misp-module-icon.png} ?
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\begin{enumerate}
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\item Turn the setting \texttt{\bf Plugin.Action\_services\_enable} on
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\end{enumerate}
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\begin{center}
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\includegraphics[width=1.0\textwidth]{pictures/settings-1.png}
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\end{center}
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\end{frame}
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\begin{frame}
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\frametitle{Getting started with workflows (4)}
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\begin{enumerate}
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\item Go to the list of modules
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\begin{itemize}
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\item \texttt{Administration > Workflows > List Modules}
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\item or \url{/workflows/moduleIndex}
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\end{itemize}
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\item Make sure \textbf{default} modules are loaded
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\item {[optional:misp-module]} Make sure \textbf{misp-module} modules are loaded
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\end{enumerate}
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\end{frame}
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\begin{frame}
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\frametitle{Getting started with workflows (4)}
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\centering
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{\Large Everything is ready?}\\
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\vspace*{3em}
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{\LARGE Let's see how to build a workflow!}
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\end{frame}
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\begin{frame}
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\frametitle{Creating a workflow with the editor}
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Prevent event publication if no \textbf{tlp:*} tag, otherwise send a message on Mattermost
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\end{frame}
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\section{Considerations when working with workflows}
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\begin{frame}
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\frametitle{Working with the editor - Operations not allowed}
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Execution loop are not authorized
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\vspace*{1em}
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\begin{columns}
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\begin{column}{0.7\textwidth}
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\frame{\includegraphics[width=1.0\linewidth]{pictures/editor-not-allowed-1.png}}
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\end{column}
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\begin{column}{0.3\textwidth}
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\frame{\includegraphics[width=1.0\linewidth]{pictures/infinite-loop.jpg}}
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\end{column}
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\end{columns}
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\end{frame}
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\begin{frame}
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\frametitle{Recursive workflows}
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\frame{\includegraphics[width=1.0\linewidth]{pictures/recursive-workflow.png}}
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\danger Recursion: If an action re-run the workflow
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\end{frame}
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\begin{frame}
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\frametitle{Working with the editor - Operations not allowed}
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Multiple connections from the same output
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\vspace*{1em}
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\begin{columns}
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\begin{column}{0.7\textwidth}
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\frame{\includegraphics[width=1.0\linewidth]{pictures/editor-not-allowed-2.png}}
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\end{column}
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\begin{column}{0.3\textwidth}
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\frame{\includegraphics[width=1.0\linewidth]{pictures/two-paths.jpeg}}
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\end{column}
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\end{columns}
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\begin{itemize}
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\item Execution order not guaranted
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\item Confusing for users
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\end{itemize}
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\end{frame}
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\begin{frame}
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\frametitle{Working with the editor}
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Cases showing a warning:
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\begin{itemize}
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\item \textbf{Blocking} modules \includegraphics[width=10px]{pictures/blocking-module.png} in a \textbf{non-blocking} workflow \includegraphics[width=0.12\linewidth]{pictures/time-machine.png}
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\item \textbf{Blocking} modules \includegraphics[width=10px]{pictures/blocking-module.png} after a \textbf{concurrent tasks} module
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\begin{center}
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\frame{\includegraphics[width=1.0\linewidth]{pictures/editor-warning-1.png}}
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\end{center}
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\end{itemize}
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\end{frame}
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\section{Advanced usage}
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\begin{frame}
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\frametitle{Workflow blueprints}
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\hspace*{0.9\textwidth}\includegraphics[width=32px]{pictures/blueprint-32.png}
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\vspace*{-2em}
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\begin{enumerate}
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\item Blueprints allow to \textbf{re-use parts} of a workflow in another one
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\item Blueprints can be saved, exported and \textbf{shared}
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\end{enumerate}
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\begin{center}
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\includegraphics[width=0.5\linewidth]{pictures/blueprint-debugging.png}
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\end{center}
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Blueprints sources:
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\begin{enumerate}
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\item Created or imported by users
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\item From the \texttt{MISP/misp-workflow-blueprints} repository\footnote{\scriptsize https://github.com/MISP/misp-workflow-blueprints}
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\end{enumerate}
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\end{frame}
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\begin{frame}[fragile]
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\frametitle{Hash path filtering}
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Filtering and checking conditions using hash path expression.
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\begin{lstlisting}[language=javascript,firstnumber=1]
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$path_expression = '{n}[name=fred].id';
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$users = [
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{'id': 123, 'name': 'fred', 'surname': 'bloggs'},
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{'id': 245, 'name': 'fred', 'surname': 'smith'},
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{'id': 356, 'name': 'joe', 'surname': 'smith'},
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];
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$ids = Hash::extract($users, $path_expression);
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// => $ids will be [123, 245]
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\end{lstlisting}
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\begin{columns}
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\begin{column}{0.6\textwidth}
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\begin{center}
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\includegraphics[width=0.7\linewidth]{pictures/attribute-json.png}
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\end{center}
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\end{column}
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\begin{column}{0.4\textwidth}
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\includegraphics[width=1.0\linewidth]{pictures/module-if-generic.png}
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\end{column}
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\end{columns}
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\end{frame}
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\begin{frame}
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\frametitle{Data format in Workflows}
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\begin{center}
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\includegraphics[width=0.7\linewidth]{pictures/workflow-trigger.png}
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\end{center}
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\begin{itemize}
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\item In most cases, the format is compliant with the \textbf{MISP Core format}
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\item But data has \textbf{additional properties}
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\begin{itemize}
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\item Attributes are \textbf{always encapsulated} in the Event or Object
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\item Additional key \textbf{\texttt{\_AttributeFlattened}}
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\item Additional key \textbf{\texttt{\_allTags}}
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\item Additional key \textbf{\texttt{inherited}} for Tags
|
|
\end{itemize}
|
|
\end{itemize}
|
|
\end{frame}
|
|
|
|
\begin{frame}
|
|
\frametitle{Logic module: Concurrent Task}
|
|
\begin{itemize}
|
|
\item Logic module allowing \textbf{multiple output} connections
|
|
\item \textbf{Postpone the execution} for remaining modules
|
|
\item Blocking modules\includegraphics[width=10px]{pictures/blocking-module.png} \textbf{cannot cancel} ongoing operations \includegraphics[width=0.05\linewidth]{pictures/time-machine.png}
|
|
\end{itemize}
|
|
\begin{center}
|
|
\frame{\includegraphics[width=0.5\linewidth]{pictures/module-concurrent.png}}
|
|
\end{center}
|
|
\end{frame}
|
|
|
|
\section{Debugging}
|
|
\begin{frame}
|
|
\frametitle{Debugging Workflows: Log Entries}
|
|
\begin{itemize}
|
|
\item Workflow execution is logged in the application logs:
|
|
\begin{itemize}
|
|
\item \texttt{/admin/logs/index}
|
|
\end{itemize}
|
|
\item Or stored on disk in the following file:
|
|
\begin{itemize}
|
|
\item \texttt{/app/tmp/logs/workflow-execution.log}
|
|
\end{itemize}
|
|
\end{itemize}
|
|
\begin{center}
|
|
\includegraphics[width=1.0\linewidth]{pictures/workflow-debug.png}
|
|
\end{center}
|
|
\end{frame}
|
|
|
|
\begin{frame}
|
|
\frametitle{Debugging Workflows: Debug mode}
|
|
\begin{itemize}
|
|
\item The \includegraphics[width=70px]{pictures/debug-mode.png} can be turned on for each workflows
|
|
\item Each nodes will send data to the provided URL
|
|
\begin{itemize}
|
|
\item Configure the setting: \texttt{Plugin.Workflow\_debug\_url}
|
|
\end{itemize}
|
|
\item Result can be visualized in
|
|
\begin{itemize}
|
|
\item \textbf{offline}: \texttt{tools/misp-workflows/webhook-listener.py}
|
|
\item \textbf{online}: \url{requestbin.com} or similar websites
|
|
\end{itemize}
|
|
\end{itemize}
|
|
\begin{center}
|
|
\includegraphics[width=0.6\linewidth]{pictures/request-bin.png}
|
|
\end{center}
|
|
\end{frame}
|
|
|
|
\begin{frame}
|
|
\frametitle{Debugging modules: Stateless execution}
|
|
\begin{itemize}
|
|
\item Test custom modules with custom input
|
|
\end{itemize}
|
|
\begin{center}
|
|
\includegraphics[width=1.0\linewidth]{pictures/stateless-execution.png}
|
|
\end{center}
|
|
\end{frame}
|
|
|
|
\begin{frame}
|
|
\frametitle{Debugging modules: Re-running workflows}
|
|
\begin{itemize}
|
|
\item Try workflows with custom input
|
|
\item Re-run workflows to ease debugging
|
|
\end{itemize}
|
|
\begin{center}
|
|
\frame{\includegraphics[width=0.55\linewidth]{pictures/running-workflows.png}}
|
|
\end{center}
|
|
\end{frame}
|
|
|
|
\begin{frame}
|
|
\frametitle{Debugging options}
|
|
\begin{columns}
|
|
\begin{column}{0.6\textwidth}
|
|
\begin{itemize}
|
|
\item Workflow execution and outcome
|
|
\item Module execution and outcome
|
|
\item Live workflow debugging with module inspection
|
|
\item Re-running/testing workflows with custom data
|
|
\item Stateless module execution
|
|
\end{itemize}
|
|
\end{column}
|
|
\begin{column}{0.4\textwidth}
|
|
\includegraphics[width=1.0\linewidth]{pictures/enough-debugging.jpg}
|
|
\end{column}
|
|
\end{columns}
|
|
\end{frame}
|
|
|
|
\section{Extending the system}
|
|
\begin{frame}
|
|
\frametitle{Creating a new module in PHP}
|
|
\begin{center}
|
|
\includegraphics[width=0.65\linewidth]{pictures/custom-1.png}
|
|
\end{center}
|
|
|
|
\begin{itemize}
|
|
\item \texttt{\small \textbf{app/Lib/}WorkflowModules/action/[module\_name].php}
|
|
\item Designed to be easilty extended
|
|
\begin{itemize}
|
|
\item Helper functions
|
|
\item Module configuration as variables
|
|
\item Implement runtime logic
|
|
\end{itemize}
|
|
\end{itemize}
|
|
\end{frame}
|
|
|
|
\begin{frame}
|
|
\frametitle{Creating a new module in Python}
|
|
\begin{center}
|
|
\includegraphics[width=0.65\linewidth]{pictures/custom-2.png}
|
|
\end{center}
|
|
|
|
\begin{itemize}
|
|
\item Similar to how other \texttt{misp-modules} are implemented
|
|
\begin{itemize}
|
|
\item Helper functions
|
|
\item Module configuration as variables
|
|
\item Implement runtime logic
|
|
\end{itemize}
|
|
\end{itemize}
|
|
\end{frame}
|
|
|
|
\begin{frame}
|
|
\frametitle{Ideas}
|
|
\begin{itemize}
|
|
\item Chat notification a community when new user joins an instance
|
|
\item Trigger on any action via log entries
|
|
\item Extend existing MISP behavior: Push correlation in another system
|
|
\item Sanity check to block publishing
|
|
\item ...
|
|
\end{itemize}
|
|
\end{frame}
|
|
|
|
\begin{frame}
|
|
\frametitle{Future works}
|
|
\begin{columns}
|
|
\begin{column}{0.55\textwidth}
|
|
\begin{itemize}
|
|
\item More \includegraphics[width=12px]{pictures/sc-action-icon.png} modules
|
|
\item More \includegraphics[width=12px]{pictures/sc-condition-icon.png} modules
|
|
\item More \includegraphics[width=12px]{pictures/sc-event-icon.png} triggers
|
|
\item More documentation
|
|
\item Recursion prevention system
|
|
\item On-the-fly data override?
|
|
\end{itemize}
|
|
\end{column}
|
|
\begin{column}{0.45\textwidth}
|
|
\includegraphics[width=1.0\linewidth]{pictures/future-works.jpeg}
|
|
\end{column}
|
|
\end{columns}
|
|
\end{frame}
|
|
|
|
\begin{frame}
|
|
\frametitle{Final words}
|
|
\begin{columns}
|
|
\begin{column}{0.6\textwidth}
|
|
\begin{itemize}
|
|
\item Feature designed to quickly and cheaply support CTI pipeline
|
|
\item \textbf{Beta}: Feature unlikely to change. But still..
|
|
\item Waiting for feedback!
|
|
\begin{itemize}
|
|
\item New triggers?
|
|
\item New action modules?
|
|
\item New conditional modules?
|
|
\item ...
|
|
\end{itemize}
|
|
\end{itemize}
|
|
\end{column}
|
|
\begin{column}{0.4\textwidth}
|
|
\includegraphics[width=1.0\linewidth]{pictures/feeling-of-power.jpg}
|
|
\end{column}
|
|
\end{columns}
|
|
\vspace*{0.5em}
|
|
\end{frame}
|
|
|