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Jump server preparation and implementation for game scenarios in Cyber Arena
Komárek, Ladislav ; Šeda, Pavel (referee) ; Stodůlka, Tomáš (advisor)
Bachelor's thesis deals with the problematics of the containerization and virtualization. Thesis focuses on the OpenStack platform and the creation of a Jump server. The main purpose of the thesis is to create a Jump server with the SSH connection to the OpenStack instances. Thesis is divided into three parts - theoretical and practical, which has two parts. The analysis of virtualization and containerization possibilities for Jump server is included in the theoretical part of the paper. Description of the OpenStack platform and its functions is also contained in the theoretical part. Based on the theoretical analysis, a~Jump server was created in second and third part. After manually verifying the functionality of the Jump server, its creation was automated on the Openstack platform.
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Jump server preparation and implementation for game scenarios in Cyber Arena
Komárek, Ladislav ; Šeda, Pavel (referee) ; Stodůlka, Tomáš (advisor)
Bachelor’s thesis deals with the problematics of the containerization and virtualization. Thesis focuses on the OpenStack platform and the creation of a Jump server. The main purpose of the thesis is to create a Jump server with the SSH connection to the OpenStack instances. Thesis is divided into two parts - theoretical and practical. The analysis of virtualization and containerization possibilities for Jump server is included in the theoretical part of the paper. Description of the OpenStack platform and its functions is also contained in the theoretical part. Based on the theoretical analysis, a Jump server was created in the practical part. After manually verifying the functionality of the Jump server, its creation was automated on the Openstack platform.
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Plagiarism Detection in Software Projects Using Abstract Syntax Trees
Szymutko, Marek ; Seda, Pavel
Plagiarism is a hot topic in modern education andscience. It requires special attention since committing plagiarismis very easy with the use of the internet. This problem can befought against utilizing prevention or detection methods, whichhave been both used in this work. This paper introduces animplementation of a submission scheme of students’ projects inclasses taught at the Brno University of Technology. Scripts for anautomatic hand-in space for each student were created. Studentshave restricted privileges within these spaces on the GitLabcloud service. For plagiarism detection, a tool written in Pythonwas developed. This tool utilizes Abstract Syntax Trees compiledfrom the source code, which is a part of the Students’ solutions.The output of the comparison is represented with a tabular fileof the format .xlsx, which allows a detailed view. Ongoingimplementation is focused on widening the tool’s usability byadding a Python similarity comparison engine.
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Vulnerability testing of cloud solutions by Slowloris attack
Šrámek, Michal ; Sikora, Marek (referee) ; Šeda, Pavel (advisor)
This bachelor's thesis addresses the issue of distributed Slowloris attack implemented in the Apache JMeter module. This module is then used to demonstrate the vulnerability in the Microsoft Azure cloud environment. The outcome of the thesis is an extension of the module, enabling testing from multiple IP addresses. The SlowHTTPTest tool, which the module utilizes for the attack, is also modified. In the introduction, the basic concepts related to cloud services and their classification are established. This is followed by chapters defining the current security threats to the cloud and how they compare between the three largest cloud providers. The technologies and configurations used in Azure environments are also described. Finally, the thesis focuses on modifying the attack module to support multiple addresses and tests it on both local and cloud infrastructures.
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Detection of plagiatorism in software projects in the BDS course
Szymutko, Marek ; Přinosil, Jiří (referee) ; Šeda, Pavel (advisor)
Plagiarism is a widespread problem, which can be fought by prevention or detection methods. This thesis contains a summary of plagiarism detection methods through automated means. To parse source code, an open-source abstract syntax tree compiler was employed. The functionality of this compiler was demonstrated in this thesis. To reduce the mutual visibility of students’ projects, a proposal for the submission process was created. GitLab cloud service was employed for this purpose. Initialization of these students’ spaces is performed via Bash scripts. Other scripts to archive and create spaces for groups of students in the GitLab service were also created. A similarity-detecting tool was created in Python programming language. This tool was specialized to be employed in the subject BPC-BDS for the detection of plagiarism in students’ assignments written in Java or Python. It can also be used in other subjects though. For similarity detection, numerical metrics and abstract syntax trees were used. The comparison output of the projects and their individual parts is represented with integer value and outputted into a tabular file of the format xlsx. This thesis also summarizes the strengths and weaknesses of the implemented solution and lists problems that were encountered in the process of implementation. A case study about plagiarism in the subject BDS in the academic year 2022/2023 is also included in this thesis.
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Java Implementation of DNP3 Protocol
Zárecký, Martin ; Šeda, Pavel (referee) ; Zeman, Kryštof (advisor)
The theoretical part of the bachelor thesis starts with IoT technologies, Human-toHuman and Machine-to-Machine communication schemes. It then goes into greater depth on industrial SCADA protocols and the DNP3 protocol. It continues with a detailed description of this protocol and also introduces the OpenMUC framework. In the practical part, a library of this protocol is also built, and an outstation is created that implements this library. The main part then consists of the OpenMUC framework into which we implement the DNP3 protocol. Finally, we build the communication between OpenMUC with DNP3 implemented and the DNP3 outstation.
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Network Scanner for PowerShell
Sabota, Dominik ; Šeda, Pavel (referee) ; Martinásek, Zdeněk (advisor)
This study focuses on the development and implementation of a network scanning tool for the scripting language Powershell version 5.1 and higher. This tool, named Oculus, was specifically designed for the use of sophisticated network scanning methods during penetration testing and other security audits, thereby becoming part of the broader context of cybersecurity. Within the set requirements and limitations, the Oculus tool was successfully implemented. This work thoroughly analyzes the process of development and implementation of this tool, its limitations, and their impact on overall effectiveness, which is subsequently tested and evaluated. Although the development process brought certain challenges, the testing results confirmed that the Oculus tool provides valuable outputs, thereby confirming its usability in the matter of improving cybersecurity.
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TLS/SSL Interoperability Across Systems
Leitmann, Peter ; Malina, Lukáš (referee) ; Šeda, Pavel (advisor)
Hlavným cieľom tejto bakalárskej práce je pridanie nových testov interoperability do vybraných open-source projektov. Dôvod pre toto pramení v dôraze na zefektívňovanie práce vývojových tímov. Táto práca hlavne popisuje široko používané bezpečnostné protokoly -- Secure Sockets Layer (SSL) and Transport Layer Security (TLS). Ďalej sa zameriava na popis postupu, ako by mal byť softvér vyvíjaný s použitím CI/CD (priebežného integrovania a priebežného nasadzovania), čo pozostáva nie len z vytvárania kódu ale aj jeho testovania. Preto je v práci vysvetlený známy cyklus vývoja SDLC (Software Development Life Cycle) a aj cyklus testovania STLC (Software Testing Life Cycle). V praktickej časti je popísaný proces vyberania vhodných testov, konfigurácia rôznych CI systémov a následné testovanie vyvíjaného softvéru. Testovacie prostredie je výhradne operačný systém Fedora a testy sú závislé na open-source nástroji Test Management Tool.
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System supporting cybersecurity training for computer exercises
Sladký, Martin ; Martinásek, Zdeněk (referee) ; Šeda, Pavel (advisor)
The present bachelor thesis deals with a system supporting cybersecurity games for computer exercises. The aim of the thesis is to create a simplified platform for cybersecurity games together with the creation of a suitable task and its testing on a sample of students. The theoretical part includes a research of cybersecurity games, the design of a web platform and the presentation of the obtained statistics. The practical part presents the implementation of the web platform and the cybersecurity game.
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