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Scalable Binary Executable File Similarity
Kubov, Peter ; Kolář, Dušan (referee) ; Regéciová, Dominika (advisor)
Cieľom tejto práce je navrhnúť a implementovať novú službu s názvom YaraZilla pre hľadanie podobností binárnych súborov so známymi malvérovými vzorkami. Veľké množstvo malvéru je iba variáciou existujúceho malvéru upraveného tak, aby unikol pozornosti antimalvérových systémov. Vďaka rozvíjajúcej sa štúdii podobnosti binárnych súborov sme schopní vytvoriť nástroje, ktoré dokážu odhaliť podobnosť binárne líšiacich sa vzoriek, a zaradiť malvér do rodiny, s ktorou zdieľa najviac podobnosti. Cieľom práce je práve poskytnúť takýto nástroj analytikom v Avaste. Služba, navrhnutá v tejto práci, hľadá podobnosť binárnych súborov využitím rozličných metód na rôznych úrovniach abstrakcie binárnych súborov - inštrukcie, základné bloky, funkcie. Navrhnutá služba je schopná spracovávať obrovské množstvo súborov, ktoré poskytujú interné systémy spoločnosti Avast. Výsledkom práce je nová služba, ktorá poskytuje malvérovým analytikom v Avaste obsiahle štatistiky podobností, ktoré je možné využiť v existujúcich službách alebo ich využiť ako základ pre nové nástroje.
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Application of modern technologies for production of complex shape surfaces
Varhaník, Matúš ; Sadílek, Marek (referee) ; Drbúl,, Mário (referee) ; Sedlák, Josef (advisor)
A set of modern production technologies was applied in the design and production of the individualized femoral component of the total knee endoprosthesis. Before starting the design of the implant itself, the Ti6Al4V material produced by SLM 3D printing technology was tested in terms of tribological contact with the articulation member made of high molecular weight polyethylene. The obtained results confirmed the possibility of using this technology for the production of the semi-finished product of the intended implant. Another series of tests gradually defined the characteristics of the technological-production process in terms of the direction of printing, heat treatment, the method of processing the functional surface and the morphology of the surface. The deposition of coatings using PVD technology was aimed at increasing the functional properties of the implant, such as antibacterial properties, reducing friction and increasing wear resistance. Coatings testing in the categories of topography, adhesion, cohesion, delamination and coefficient of friction successively generated a winner from among the 3 tested coatings (TiN, WZrB, TiCC). The final part of the dissertation frames the acquired knowledge and transfers it to the pre-production and production phase of the creation of the femoral component of the total knee endoprosthesis. During this phase, knowledge from the field of reverse engineering, construction and chip machining technology is applied. The output of the work is an implant, the production of which included the use of a total of 4 reverse engineering software solutions, CAD/CAM support, CNC milling of general surfaces, polishing of the functional part and PVD coating.
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Security Analysis of Selected SOHO Network Attached Storage
Zaujec, Andrej ; Malinka, Kamil (referee) ; Tamaškovič, Marek (advisor)
Sieťové úložisko (NAS) je systém na ukladanie dát, ktorý umožňuje používateľom prístup k uloženým dátam a ich správu prostredníctvom siete. Systémy NAS môžu byť pohodlným a bezpečný spôsob ukladania a prístupu k dátam, ale môžu predstavovať aj bezpečnostné riziko, ak nie sú správne nakonfigurované alebo udržiavané. Cieľom tejto diplomovej práce je vykonať bezpečnostnú analýzu zariadení Zyxel NAS326 a Synology DS120j. Táto analýza je vykonaná v rámci viacerých vrstiev od analýzy hardvéru cez analýzu siete až po analýzu firmvéru. V rámci práce bolo nájdených a popísaných niekoľko zraniteľností s možnými návhrmi na opravu. Najzávažnejšia objavená zraniteľnoť je kritický zero-day na Zyxel NASe.
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Security Analysis of Selected SOHO Router
Richtarik, Jakub ; Holop, Patrik (referee) ; Tamaškovič, Marek (advisor)
Pre narastajúci počet zamestnancov pracujúcich na home office a zvyšujúci sa počet IoT zariadení v domácnostiach, je čoraz viac potrebné používať dostatočne zabezpečné smerovače. Cieľom tejto práce je preskúmať vybrané SOHO (small office/home office) smerovače, zástupcov aktuálne predávaných domácich smerovačov, z pohľadu bezpečnosti. Dokument taktiež demonštruje postup a metódy, ktoré je možné použiť pri testovaní a analýze iných smerovačov a IoT zariadení.
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Use of photogrammetry in machine parts reconstruction
Raclavský, David ; Straka, Tomáš (referee) ; Repka, Martin (advisor)
This thesis provides a general overview of the various 3D scanner designs and focuses on 3D scanners using the principle of photogrammetry and presents their current representatives on the market. In the practical part, the procedure of constructing a machine component using reverse engineering methods is described, where the scanning process and the creation of a CAD model are presented, followed by a comparison of the result with the original 3D scan.
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Security Analysis of Selected Android TV Box
Švenk, Adam ; Veigend, Petr (referee) ; Tamaškovič, Marek (advisor)
Popularita TV boxov so systémom Android v poslednom čase výrazne vzrástla. Okrem toho, že ponúkajú širokú škálu funkcií, je čoraz aktuálnejšia otázka, či sú dostatočne zabezpečené a chránené. Táto práca popisuje komplexnú bezpečnostnú analýzu vybraného Android TV boxu, ktorá zahŕňa hardvérové aj softvérové komponenty. Skúmaním zraniteľností prítomných v zariadení sa táto práca zameriava na identifikáciu potenciálnych rizík pre súkromie a bezpečnosť používateľov. Okrem toho navrhuje odporúčania na zmiernenie týchto zraniteľností.
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Optimizing a highly loaded components for motorsport
Šišpera, Petr ; Prokop, Aleš (referee) ; Řehák, Kamil (advisor)
This thesis deals with optimizing the rear suspension of the fifth generation Honda Civic for motorsport application. The goal is to reduce weight while increasing stiffness and precision in wheel control. The work is based on the properties of serial components, which are analyzed using FEM analysis in the Ansys program. Load conditions are calculated from vehicle dynamics and the loading of individual arms from the suspension kinematics. Suspension components are first modeled and analyzed and this data provides input information for optimization. Individual components are initially topologically optimized, based on which models are created for deformation stress analysis. The properties of the serial parts are ultimately compared to optimized ones under the most critical loading conditions and the result of the work is an optimized suspension system with lower weight and higher stiffness.
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Cross-flow turbine - reverse engineering
Řeha, David ; Haluza, Miloslav (referee) ; Hudec, Martin (advisor)
This thesis deals with the reverse engineering of the cross-flow turbine. The departement of fluid engineering was given a model of the cross-flow turbine many years ago, however it has never been put into service and nothing is known about it. This thesis describes the analysis of the turbine design, the replacement of parts that occurred to bring the turbine into service, and how the turbine was modified for the process itself. Furthermore, based on the dimensions obtained estimation of the parameters, for which the turbine was designed, was carried out. A measurement track was set up for that purpose and the turbine was measured in the laboratory conditions. Real values of the turbine parameters and the subsequent evaluation of the universal characteristics of the turbine were obtained by the measurement. This thesis includes also the construction of a measurement tutorial for students.
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Preparation and design of the production of bevel gears using the Reverse engineering method
Šimáček, Daniel ; Sedlák, Josef (referee) ; Slaný, Martin (advisor)
This thesis addresses the reverse engineering of the assigned gears. The first part is dedicated to a theoretical review of the issues related to bevel gears, strength calculations of the gearing and defects that can occur during operation. This is followed by the production of bevel gears with helical teeth and the most common heat treatment of gears. The second part emphasizes the actual process of reverse engineering, describing the digitization of gears and their conversion into a solid body in CAD software. After obtaining the key dimensions of the gear set, an analytical calculation of the load capacity in contact and bending is performed, accompanied by a numerical calculation using the finite element method to determine the bending stress at the tooth root. Dimension verification is conducted through dimensional analysis in specialized software to potentially reveal deviations and inaccuracies in construction based on 3D scanning. The final part deals with the design of the technological process for the production of gears, followed by a technical-economic assessment of the preparation and actual production of the gears. The drawing documentation was created based on the 3D volumetric models generated from the scanned gears
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None homogenous robot swarm creation
Bělohlávek, Jan ; Bergeon,, Yves (referee) ; Křivánek, Václav (advisor)
The subject of this thesis is enabling the DJI Robomaster S1 robot to be used as an autonomous drone in a robotic swarm. This is achieved by an analysis and documentation of the robot's internal communications protocol and the implementation of this protocol into the system. The Robomaster S1 is an educational robot, that the University of Defense in Brno wants to use for experimenting with swarm formations. However, the design of the robot does not allow for it to be controlled by external code and its source code is not public. The robot's main computer controls the rest of the robot via CAN bus, this communication was reverse engineered and the individual commands were documented. The robot's main computer was replaced with an ESP32, which now sends the commands itself and controls the robot. A wireless control method, which utilizes the ESP-NOW protocol, was also implemented. This enables the user to control the robot manually, but also serves as a foundation to enabling several robots to communicate with one another. With the applied modifications the battery life also significantly improved. The robot can now be used in a robotic swarm.
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