Linux under PWN from getting started to giving up

Introduction to Linux under PWN from getting started to abandoning 0x0PWN, in the security realm, is the shell that obtains the target host by means of binary/system call.Although the web system in the Internet occupies a relatively large component,

Linux Common commands

1. Review the ProcessPs-ef | grep keyword/* keyword for service name */NETSTAT-UNLTP | grep keyword/* keyword is a service name or a port */2. Kill the ProcessKILL-9 Process Number/* Operation be cautious */3. Paging to view filesCat file name |

2017-2018-1 20179202 "Linux kernel Fundamentals and analysis" 12th week assignment

C Language implementation of Linux network sniffer one, knowledge preparation1. In general, all machines on the network can "listen" to the traffic that passes through, but will not respond to packets that do not belong to them. If a workstation's

Linux Common commands

switching machine, restart, logoff shutdown-h now #立即关机reboot #重启exit #注销当前用户上传下载文件, these two commands need to be installed, not brought to the command #yum-y install Lrzsz#rz and sz can only manipulate files, cannot manipulate folder RZ #上传sz

20179203 "Linux kernel Fundamentals and analysis" 12th Week work

RETURN-TO-LIBC Attack experiment First, the experimental descriptionBuffer overflow Common attack method is to use Shellcode address to overwrite the return address of the vulnerability program, so that the vulnerability program to execute

Linux awk command Details

IntroductionAwk is a powerful text analysis tool, with the search for grep and the editing of SED, which is especially powerful when it comes to analyzing data and generating reports. To put it simply, awk reads the file line-by-row, using spaces as

Linux basic commands in a detailed

1 Traversing a directoryAbbreviation of Cd:change Dicrectory. Or./represents the current directory,.. Or.. /represents the previous table of contents, CD-Represents the last directory entered.2 List of files and directoriesLs:list, the file under

20179223 "Linux kernel Fundamentals and analysis" 12th Week study notes

RETURN-TO-LIBC attack Experiment One, experimental description 缓冲区溢出的常用攻击方法是用 shellcode 的地址来覆盖漏洞程序的返回地址,使得漏洞程序去执行存放在栈中 shellcode。为了阻止这种类型的攻击,一些操作系统使得系统管理员具有使栈不可执行的能力。这样的话,一旦程序执行存放在栈中的 shellcode 就会崩溃,从而阻止了攻击。 不幸的是上面的保护方式并不是完全有效的,现在存在一种缓冲区溢出的变体攻击,

One Linux command per day: crontab command

The previous day learned that the at command is for routine scheduled tasks that run only once, and that the Linux system is controlled by the cron (Crond) system service. Linux systems have a lot of planned work on them, so this system service is

Linux DNS cache name servers

Specific steps:1.? Insert the installation disc and mount it, then install the bind package and the associated package. :2.? Edit the master configuration file . Master profile Named.conf is usually located in /etc/ directory, if you have

Tomcat cannot access Chinese path or Chinese files under Linux

Problem Description: Tomcat published in the Linux environment contains the Chinese name of the page and file, browser access to the newspaper 404, Non-Chinese page no problem; I published the prototype for RP design, which contains a large number

Linux IPV6 Address configuration

Add IPV6 AddressIp-6 addr Add / dev Ip-6 addr Add 2001:0db8:0:f101::1/64 dev eth0Ifconfig inet6 Add /Ifconfig eth0 inet6 Add 2001:0db8:0:f101::1/64Add a default routeIp-6 route add / via Ip-6 route add default via 2001:0db8:0:f101::1Route-a Inet6

Linux system Administrator Technology (Admin)-------Fifth day

Operation on the real machine, restoring the environment[[Email protected] Desktop]# rht-vmctl Reset Classroom[[Email protected] Desktop]# rht-vmctl Reset Server[[Email protected] Desktop]# rht-vmctl Reset Desktop#####################################

Linux system Administrator Technology (Admin)-------Fifth day

Operation on the real machine, restoring the environment[[Email protected] Desktop]# rht-vmctl Reset Classroom[[Email protected] Desktop]# rht-vmctl Reset Server[[Email protected] Desktop]# rht-vmctl Reset DesktopConfigure the following static

How to generate a core dump file under Linux (fix segment fault segment error)

C programs under Linux often cause segment fault (segment error) due to memory access, and if the function of core dump is open, a file called core will be generated when running our executable program. We can then use GDB to tune the core file to

Embedded Linux compiler kernel steps/focus on solving machine code problems

Embedded system Update Kernel 1. ObjectiveThere is a friendly arm of the MINI2451 board, this week to try to compile the kernel, and then update the board of the Linux kernel, want to update the Linux Kernel 4.1 version, but for a variety of reasons

The problem of interrupt number in REQUST_IRQ function parameter in Linux

Pit bit:Hardware colleague gave me a bit, told me that Spi-contrler's interrupt number is 89, let me check whether this spi-controler can be used. After three days, the read-write function was tested, but the interruption was impossible to enter. I

Linux Cloud Computing-Phase 2-essential knowledge

Linux Administrator Technology--01. Wildcard characters * 、?、 [], {} function*: Any number of arbitrary characters?: Single Character[A-Z]: one of multiple characters or continuous range, omitted if none{A,MIN,XY}: Multiple sets of different strings,

Linux under the source installation of XZ method

XZ is a less common but very efficient decompression software, the installation method is as follows1, cd/usr/local/src2, wget https://tukaani.org/xz/xz-5.2.3.tar.gz//download to the/USR/LOCAL/SRC directory3, Tar xzvf xz-5.2.3. tar.gz4, CD xz-5.2.35,

2. Basic Linux Command Learning 02

=============================================================================A.txtC:\abc\a.txt Windows notation (backslash)/abc/a.txt Linux notation (slash)-----------------------------------------------------------------------------Relative path

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