This article will be about using IAT hooking methods for offensive purposes. These methods can be used in multiple situations where attacker needs to evade certain defense and analysis mechanism or hide from the victim in low privileged environments. Before getting into the technical stuff reader needs to be familiar with the following terminology. Read More
Because of the increasing security standards inside operating systems and rapid improvements on malware detection technologies today’s malware authors takes advantage of the transparency offered by in-memory execution methods. In-memory execution or fileless execution of a PE file can be defined as executing a compiled PE file inside the memory with manually performing the operations that OS loader supposed to do when executing the PE file normally. In-memory execution of a malware facilitates the obfuscation and anti-emulation techniques. Additionally the malware that is using such methods leaves less footprints on the system since it does not have to possess a file inside the hard drive. Combining in-memory execution methods and multi stage infection models allows malware to infect systems with very small sized loader programs; only purpose of a loader is loading and executing the actual malware code via connecting to a remote system. Using small loader codes are hard to detect by security products because of the purpose and the code fragments of loaders are very common among legitimate applications. Malware that are using this approach can still be detected with scanning the memory and inspecting the behaviors of processes but in terms of security products these operation are harder to implement and costly because of the higher resource usage (Ramilli, 2010). Read More
This article will deal with subjects such as basic shellcoding concepts, assembly level encoder/decoder design and few methods for bypassing anti exploit solutions such as Microsoft’s Enhanced Mitigation Experience Toolkit(EMET). Read More
Imagine that you have gotten a low-priv Meterpreter session on a Windows machine. Probably you’ll run getsystem to escalate your privileges. But what if it fails?
Don’t panic. There are still some techniques you can try.
This paper will explain several methods used for placing backdoors in PE (Portable Executable) files for red team purposes, in order to fully grasp the content of this paper, readers needs to have at least intermediate x86 assembly knowledge, familiarity with debuggers and decent understanding of PE file format. Read More