/Dev/MEM: full image of physical memory. It can be used to access the physical memory.
/Dev/kmem: The full image of the virtual memory seen by the kernel. Can be used to access the contents of the kernel.
/Dev/MEM is used to access physical Io devices, for example, X is used to access the physical memory of the graphics card or access gpio in embedded systems. Use
The method is generally open and then MMAP can use the address after map to access the physical memory. This is actually the implemen
. sys and other names are left in your system. CNNIC will release a driver during installation, which is temporary and will be deleted after installation. The driver aims to detect whether other software has damaged its own installation, ensure that the installer works properly. At the same time, the installer also has anti-debugging methods. When detecting that the installer is in the debugging status, It proactively exits to protect the security of key code, this is probably the result of the
List hidden processes by reading kiwaitinlisthead/*Some rootkit hides the process by changing the psactiveprocess linked list or related native APIs. The following program directly readsKiwaitinlisthead and kiwaitoutlisthead are used to list hidden processes.For technical details, refer to the original document of Jan K. rutkoski.Http://www.blackhat.com/presentations/bh-usa-03/bh-us-03-rutkowski/rutkowski-antirootkit.zip.The original DEMO code is impl
Author: cogitoThe day before yesterday to read the rootkit hook combojiang series [five] IRP hook Family Fu (original post: http://bbs.pediy.com/showthread.php? T = 60022), it is decided to use the third method in the article to implement a keylogger. However, the combojiang predecessors did not put a demo, and I did not seem to find a complete IRP hook keyboard logger instance on the Internet, so I wrote one, privilege is to provide a complete refere
http://www.codemachine.com/courses.html#kerdbgWindows Kernel Internals for Security researchersThis course takes a deep dive to the internals of the Windows kernel from a security perspective. Attendees learn about behind the scenes working of various in the Windows kernel with emphasis on internal algo RITHMS, data structures and debugger usage. Every topic in this course are accompanied by hands-on labs, involve extensive use of the kernel Debugger (WINDBG/KD) W ith emphasis on interpreting th
=2, set log file size (for data recovery), and logthe number of copies saved; key_buffer_size: recommended small, 32M or so, it is recommended to close Query_cache;mp_table_size and max_heap_table_size set not too large, sort_buffer_size, join_buffer_size, read_buffer_size, read_rnd_buffer_size and other settings also do not too large;Linux system security:RootKit Backdoor Detection Tool, Rkhunterhttps://rootkit.nl/software/rootkit-hunter/https://ro
tools, intrusion detection systems (IDS), packet-based Tools, port scanners, rootkit probes, security-oriented operating systems, packet sniffers, exploit tools, traffic monitoring tools, vulnerability scanners, Web proxy servers, Web vulnerability scanners, and wireless tools.Edge-security group-projectsEdge-security Group is focused on offensive security, malware intelligence, and mobile security professionals who also maintain their own projects:
such file or directory) Baidu for a reason there are generally two, one is the operating system does not include the shared library (Lib*.so.*file) or the shared library version is not correct, in this case, go to download and install on the Internet. Another reason is that the shared library has been installed, but when you execute a program that calls the shared library, the program cannot find the shared library file by default shared library path. Reference Connection: http://www.jb51.net/a
the process of finding traffic anomalies.7. StraceTrace the system calls performed by a process to analyze the operation of the Trojan.8. StringsA printable string in the output file that can be used to analyze the Trojan horse program.Third, rootkit detection toolsChkrootkit and Rkhunter are common tools used in Linux to find the backdoor for detecting rootkits.1, ChkrootkitProject home: http://www.chkrootkit.org/Install Chkrootkit:# wget ftp://ftp.
pid find open related filesat this point, only the first cut off the external network, intranet SSH into the system, and then find the program of the contract. The first step: See if there are open ports or links through NETSTAT-ANPTStep Two: see if there are any suspicious processes through PS-EFas a result, no suspicious phenomena were found. suspect is implanted with a rootkit Trojan horse program! Rootkit
) Make the system no longer save command record: Vi/etc/profile, find histsize This value, modified to 0Safety testingRkhunterRkhunter's Chinese name is "Rootkit Hunter", which can now be found in most known rootkits and some sniffer and backdoor procedures. It verifies that the server is infected with rootkits by executing a series of test scripts. For example, check the basic file used by rootkits, execute the error file permission of binary file, d
of itself that contains all its functions can be propagated to another computer. Under the Linux platform, worms are rampant, such as ramen, lion, and slapper, which use system vulnerabilities to infect a large number of Linux systems, causing huge losses.Script virusThere are many more viruses that are written in the Shell scripting language. This type of virus is simpler to write, but the damage is equally shocking. We know that there are many script files in the Linux system that end in. SH,
Often see some people in the invasion of a Windows 2000 or Windows NT after the audience to create an administrative group of users, it seems that when the administrator does not exist in general, today I violate my previous intention, share a similar to the rootkit, of course, These processes can also be scripted, but I don't write them, ok,show time now.
The first thing to know is that in Windows 2000 and Windows NT, the SID for the default adminis
Symantec's latest Norton Antivirus Norton Antivirus 2007, this version retains the advantage of the previous generation, the resource occupancy is greatly improved, the memory footprint is effectively controlled in the 10m-15m, the new background scanning function only takes up very small resources, Can be scanned at the same time does not affect you to do your own thing.
Norton 2007 Products Integrated Veritas VXMS Technology for the first time, greatly improve the hidden in the system deep
a Linux environment a well-known such toolkit name is
Rootkit. You can get hundreds of results by searching for keyword rootkit in any search engine. These tools generally include:
PS Netstat top ...
Since these documents have been superseded. So simply using the LS command to see these files is not a flaw. There are a number of ways you
You can verify the integrity of your system files. If you are inst
Byshell is an independent function that allows you to remotely control backdoors without processes, DLL, and startup items. It integrates multiple Rootkit technical features ). It uses threads to inject DLL to system processes, unmaps the DLL, deletes its own files and startup items, and recovers when it is shut down. It is a kernel-level Trojan program, mainly working in Ring0, so it is highly concealed and lethal.Hackers usually use Byshell Trojans
virus is easy to write, but it is equally destructive. We know that there are many. the script file ending with sh, and a shell script with just a dozen lines can traverse all the script files on the hard disk in a short time for infection.
4. backdoor program: In the broad definition of virus, backdoor programs are also included in the scope of virus. The backdoor that is active in Windows is also very active on Linux. From adding simple backdoors for system superuser accounts, to using system
the entire history command is empty (ll. bash_history will find that it is linked to/dev/null, or only records the history you just run (it has been cleared). These situations are suspicious and you must disconnect the network, back up your data...
3. the ps command is not necessarily reliable. when the rootkit exists and you cannot find it using the ps command, it indicates that your ps file has been replaced! Remember to run the md5sum/bin/ps comma
Delete lpt1.css. asp or com8.index. asp files
Generally, files such as lpt1.css. asp or com8.index. asp are webshells created by hackers using the system to Retain file names. In Windows, the following words cannot be used to name files or folders:
Aux | prn | con | nul | com1 | com2 | com3 | com4 | com5 | com6 | com7 | com8 | com9 | lpt1 | lpt2 | lpt3 | lpt4 | lpt5 | lpt6 | lpt7 | lpt8 | lpt9However, you can use the copy command in cmd:
D: \ wwwroot> copy r
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