Dll hijacking
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DLL hijacking is a vulnerability that allows malicious code to be executed by tricking an application into loading a compromised DLL file. When a Windows program loads additional code stored in DLL files, it searches in the current directory before system folders, allowing a Trojan DLL to be executed if it is placed in the same directory as a file the user opens. While first reported in 2000, DLL hijacking recently saw widespread exploitation by abusing the DLL search order to take control of programs opened from remote shares or drives. Microsoft has provided some mitigations but no full fix, while new registry keys can safeguard individual applications.
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[2014 CodeEngn Conference 10] 정광운 - 안드로이드에서도 한번 후킹을 해볼까 (Hooking on Android)
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DEFCON 27 - ALEXANDRE BORGES - dot net malware threats
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This document summarizes research on vulnerabilities related to dynamic component loading in Windows. It discusses how applications search multiple directories to load DLLs, which can allow malicious files to be loaded instead if they are placed in the search path before the intended file. Several attack vectors are described that exploit this behavior, such as DLL hijacking. Related work on detecting unsafe component loadings and Windows API-based vulnerability detection is also summarized. The document concludes that these dynamic loading issues pose security risks and that the referenced papers provide techniques to identify vulnerable loadings.
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This document summarizes research on vulnerabilities related to dynamic component loading in Windows. It discusses how DLL hijacking works by placing a malicious DLL with the same name as a legitimate one in a directory searched by an application during loading. It also describes other attacks like DLL preloading and load hijacking. The document reviews related work on detecting unsafe dynamic loading, analyzing Windows API calls to detect malware, and generating exploits for identified vulnerabilities. It concludes that the common component resolution strategy in Windows poses security risks if only file names are used during loading.
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The developer is an easy and valuable target for malicious minds. The reasons for that are numerous and hard to come by. This talk delivers examples, proof, discussion and awkward moments in a pretty special way.
Everybody hates developers – especially web developers. And why not? The cracks and crevices of their APIs and implementations are the reason that vulnerabilities in web applications are still a widespread issue – and will continue to be in the foreseeable future.
Bashing and blaming them for their wrongdoings is fun – boy, they are stupid in their mistakes! But has anyone ever dared to have an open on stage battle with an actual developer?
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An expert in custom Android malware for penetration testing discussed building custom malware to bypass security controls. The speaker outlined their methodology which included researching existing malware techniques, probing the environment, uploading unmodified malware, and creating altered versions to evade detection. The talk covered functionality like autostarting, collecting device data, and communicating with command and control servers. Various scenarios were proposed like using vulnerable libraries or requesting all permissions to test security controls.
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Android_Malware_IOAsis_2014_Analysis.pdf
es un análisis detallado sobre el malware que afecta a los dispositivos Android, realizado en el año 2014. Este estudio proporciona una visión completa del panorama del malware en esa época, incluyendo los métodos de propagación, las técnicas de infección y el impacto en los usuarios y sus dispositivos.
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This document discusses application layer attacks and how attackers target vulnerabilities in applications and operating systems. It describes common application attack techniques like privilege escalation, improper input handling, error handling, cross-site scripting, buffer overflows, SQL injections, and DLL injections. The document provides examples of each type of attack and how attackers are able to compromise systems or access unauthorized data by exploiting vulnerabilities at the application layer.
.NET MALWARE THREATS -- BHACK CONFERENCE 2019
The document discusses .NET malware threats and analysis. It provides an agenda for the talk including an introduction to .NET details and analysis. It discusses common techniques used in .NET malware like decrypting encrypted content and loading external assemblies. The document lists tools that can be used to analyze .NET malware like dnSpy, ILSpy, and WinDbg. It also discusses following the entry point and calling chains in managed code to understand the malware's behavior.
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DEFCON 27 - ALEXANDRE BORGES - dot net malware threats
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Dll hijacking
- 1. Dll hijacking Praveen Kumar [D4rk357] Information Security Rookie
- 2. Introduction DLL Hijacking is very Topic in exploit research and development these days . On 25th of August this year Exploit-DB was flooded with so many DLL Hijacking exploits that they stopped accepting it in the database and they mentioned these exploits in their blog post. Nearly all window application including this powerpoint (w00t w00t) I am using is vulnerable to it.
- 3. Introduction
- 4. Is DLL Hijacking New vector? While Searching for DLL Hijacking on Internet I saw mention of this exploit from as long as back in 2000(maybe you can find its mention much before that). What opened the floodgates of DLL hijacking exploits was a exploitation method by The Leader(maybe he also borrowed it from somewhere else) which could be used as if for nearly all applications to pawn them.
- 6. What is DLL Hijacking In simple words, DLL Hijacking is the vulnerability which can be used to make any vulnerable application to load malicious DLL by exploiting its DLL search order mechanism there by taking complete control over the system. Attacker can trick the user to open the documents/video/movies from the remote share where user can place malicious version of legitimate DLL. So when user launches the application to view such remote content, application will load these malicious DLLs instead of original DLL.
- 7. Microsoft Windows DLL Search Path Weakness When a program executes under Microsoft Windows, it may require additional code stored in DLL library files. These files are dynamically located at run time, and loaded if necessary. A weakness exists in the algorithm used to locate these files.The search algorithm used to locate DLL files specifies that the current working directory is checked before the System folders. If a trojaned DLL can be inserted into the system in an arbitrary location, and a predictable executable called with the same current working directory, the trojaned DLL may be loaded and executed. This may occur when a data file is accessed through the 'Run' function, or double clicked in Windows Explorer.
- 9. Solutions ?? Sorry but there is no fix to this yet . Microsoft has released an Security Advisory citing this problem and mentioning about these mitigations Disable loading of libraries from WebDAV and remote network shares Disable the WebClient service Block TCP ports 139 and 445 at the firewall Microsoft has also introduced new registry key CWDIllegalInDllSearch to safeguard individual or All applications from this vulnerability. Below is the link to KB article.
- 10. Questions ?? Maybe I will not be able to answer all but we have a lot of ppl in audience who can . So start shooting
- 11. Thanksgiving Thanks to Rockey killer , FB1H2S, b0nd, punter,prashant,vinay,and all h4ck3r.in and garage4hackers.com Speacial Thanks to everyone in the audience for not sleeping :D .