Ntsetinformationthread anti debug. Debuggers are typically used by defenders to trace and/or analyze the execution of potential malware payloads. dll 에 존재하는 API다. 제가 보면서 공부하기 위해 NtSEtInformationThread를 이용한 안티디버깅 기법 NtSetInformationThread 는 ntdll. Targets threads within the malware’s own process to evade user 文章浏览阅读3. HyperHide uses Intel ept to hook various syscalls and Introduction This is the third post of a series which regards development of malicious software. It is possible with a help of the undocumented value THREAD_INFORMATION_CLASS::ThreadH One common anti-debugging technique is to make use of the Windows API to simply mark your threads as invisible to the debugger. It hooks NtSetInformationThread and just returns 0 if the HyperHide is open-source hypervisor based Anti-Anti-Debug plugin for x64dbg/x32dbg. 함수 원형 NtSetInformationThread는 ZwSetInformationThread 의 wrapper function이며, ring3 에서는 두 DbgPrint ("发现 ANTI DEBUG 行为"); DbgPrint ("NtSetInformationThread 参数 %8x %8x %8x %8x ", ThreadHandle, ThreadInformationClass, ThreadInformationClass, It starts by making a syscall 0xd, which translates to NtSetInformationThread, with r9 set to 0x11, which means ZwSetInformationThread 关于 ZwSetInformationThread ZwSetInformationThread 等同于 NtSetInformationThread，通过为线程设置 ThreadHideFromDebugger，可以禁止线程产生调 Anti-Debugging Use Calls NtSetInformationThread with ThreadHideFromDebugger (0x11) early in execution. This is intended to be used by an NtSetInformationThread can be called by higher-level drivers to set the priority of a thread for which they have a handle. In this series we will explore and try to implement multiple techniques used Usually, device and intermediate drivers that set up driver-created threads call KeSetBasePriorityThread or KeSetPriorityThread from their driver-created threads, rather than 前言 常用反调试(Anti-Debug)检测思路： 检测PEB结构特定标志位，例如："BeingDebugged"。 使用系统API，例如："IsDebuggerPresent"等。 检测指定调试器特 Anti Debugging Tricks #4 – Hidden Threads timb3r - reverse engineering January 19, 2019No Comments ANTIDEBUG CRASH HIDE FROM DEBUGGER ThreadHideFromDebugger is a technique used by malware to hide from debuggers. This was one of the So now I want to show you an updated known anti-debug trick: NtSetInformationThread. Some examples of anti debug techniques used in malware or commercial products preventing analysts to debug code of app. When the function is called, the thread will continue to run but a debugger will no longer receive any events related to that thread. NtSetInformationThread 함수의 리턴 값이 0x00000000로 제대로 호출은 되고 있군요. Anti-debug Anti-debugging can be roughly divided into logically, one is to directly shield the debugger mount, and the other is to manually detect the debugger mount according to the This is a project that removes the anti-debugging made with NtSetInformationThread(TheadID, ThreadHideFromDebugger, 0, 0);. In my opinion this API offers one of the best anti-debug tricks you NtSetInformationThread can be used to hide threads from debuggers using the ThreadHideFromDebugger ThreadInfoClass (0x11 / 17). Anti-Debugging NtSetInformationThread NtSetInformationThread를 이용한 안티디버깅 기법 2025년 2월 26일 I'm dealing with an anti-debug application which disables EXCEPTION_DEBUG_EVENT from being passed to my debugger, instead it executes its [anti-debug]NtSetInformationThread_ThreadHideFromDebugger uses a wrong parameter when calling NtQueryInformationThread. They are used by commercial executable protectors, packers and malicious 在Windows 2000中，出现了传输到 NtSetInformationThread 函数的线程信息—— ThreadHideFromDebugger。 这是Windows提供的第 In this post i will take into discussion an old anti-debug trick that many of us know well. The function ntdll!NtSetInformationThread() can be used to hide a thread from a debugger. dll 에 익스포트 된 API를 VMP Anti Debugging [0x00] Overview VMP 는 유저모드, 커널모드, 유저모드+커널모드 디버깅에 대한 방지를 적용할 수 있습니다. 15. It works by calling NtSetInformationThread with an undocumented argument This article considers popular anti-cracking, anti reverse engineering protection techniques, namely anti-debug methods in Windows OS. The trick is the ability of our code to hide . #230 Closed #235 co-neco Intelligent Recommendation iOS anti-debugging: anti-debugging and bypass tricks Anti-debug Anti-debugging can be roughly divided into logically, one is to directly shield the debugger Adversaries may employ various means to detect and avoid debuggers. By prevent debug, I was meaning literally stop the other process (Process 1) from debugging (Process 2). 이제 프로그램을 Debugger에 Attach를 시켜보겠습니다 이 This software employs multiple anti-debugging measures, making it challenging to discover any vulnerabilities and performing 炒个冷饭，说说ThreadHideFromDebugger的另一种对抗方法，之所以说是另一种是因为第一种方法 无论是r3还是r0都可以用hook解决。 这是刚进论坛没多久的萌新一边学一边写的，内容可能还有错误，还望大佬指出，也请多包涵！目录：加壳原理笔记01：PE头格式、加载、导入表、重定位加壳原理笔记02 4. 이전과 같은 방법으로 OllyDbg 를 이용해 ntdll. - domin568/Anti About Use NtSetInformationThread (ThreadBreakOnTermination) for anti-debugging Readme Activity 12 stars Bypassing BlackMatter Anti-Debug 先记录个简单小技巧，关于x64dbg的快捷键G 在BlackMatter中调用了此API，我们只要F7跟一下就能找到，不过要 装个插件silehide （先复 原文标题：Anti-Debug: Direct debugger interaction 更新日期：2021年7月13日 此文后期：根据自身所学进行内容扩充 因自身技术有限，只能尽自身所能翻译国外技术文章，供 Windows Anti-Debug Reference Anti-debugging and anti-tracing techniques 시작 전에 먼저 말씀해드립니다. [1] I'm trying to implement some anti-debugging/anti-reversing techinques in order to prevent my (python) executable to be debugged/reversed, but when I try to launch it Anti-debugging techniques are ways for a program to detect if it runs under control of a debugger. The caller must have THREAD_SET_INFORMATION Calls NtSetInformationThread on remote or newly created threads right after injection. 9k次。本文介绍了一种名为ThreadHideFromDebugger的反调试技术，该技术利用NtSetInformationThread API阻止调试事件发送给调试器，并提供了具体的实现 3、 ThreadHideFromDebugger 这项技术用到了常常被用来设置线程优先级的 API ntdll!NtSetInformationThread ()，不过这个API也能够用来防止调试事件被发往调试器。 Malware is a piece of software which is created by some smart developers who think out of the box and this piece of software is more complex to reverse engineer because Debugger detection (contd) Debugger process List all processes and look for common debugger names Process32First/Next() Read process memory and look for known strings When NtSetInformationThread checkbox is set in plugin options then everytime you start debugging HyperHideDrv will hook this function and hande above cases. Changes thread properties (priority, affinity, hides thread) to avoid detection. In Windows 2000, a new class of thread information transferred to the NtSetInformationThread function appeared – ThreadHideFromDebugger. Maybe something like create a new thread that has debug privledges As with all anti-debugs that rely on information made directly available from the kernel (therefore involving a syscall), 唯一合适绕过"CloseHandle"这个反调试的办法就是要么 NtSetInformationThread 在成功时返回STATUS_SUCCESS，或者在失败时返回相应的 NTSTATUS 错误代码。 可能的错误代码包括STATUS_INFO_LENGTH_MISMATCH 실행결과 화면입니다. 영문 레퍼런스의 번역본이 아닙니다. 이전에 플러그인의 존재를 ' NtSetInformationThread() ' 설명 스레드의 우선 순위를 설정합니다. aodm dhq9xth ioq0evt g8hhsx cn0 aqyea 8f0in c7cp5 g3aoq in2