Banner Grabber
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telnet
Apache
- telnet 192.168.240.69 80
Trying 192.168.240.69... Connected to 192.168.240.69. Escape character is '^]'.
- GET / HTTP/1.1
- RETURN
- RETURN
HTTP/1.1 400 Bad Request Date: Mon, 15 Aug 2016 13:02:19 GMT Server: Apache/2.4.7 (Ubuntu) Content-Length: 308 Connection: close Content-Type: text/html; charset=iso-8859-1 <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> <html><head> <title>400 Bad Request</title> </head><body> <h1>Bad Request</h1> <p>Your browser sent a request that this server could not understand.<br /> </p> <hr> <address>Apache/2.4.7 (Ubuntu) Server at scorpia.xinux.org Port 80</address> </body></html> Connection closed by foreign host.
IIS
- telnet 192.168.242.75 80
Trying 192.168.242.75... Connected to 192.168.242.75. Escape character is '^]'.
- GET / HTTP/1.1
- RETURN
- RETURN
HTTP/1.1 400 Bad Request Content-Type: text/html; charset=us-ascii Server: Microsoft-HTTPAPI/2.0 Date: Tue, 16 Aug 2016 13:02:03 GMT Connection: close Content-Length: 334 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN""http://www.w3.org/TR/html4/strict.dtd"> <HTML><HEAD><TITLE>Bad Request</TITLE> <META HTTP-EQUIV="Content-Type" Content="text/html; charset=us-ascii"></HEAD> <BODY><h2>Bad Request - Invalid Hostname</h2> <hr><p>HTTP Error 400. The request hostname is invalid.</p> </BODY></HTML> Connection closed by foreign host.
netcat
- echo -e "GET / HTTP/1.1\n\n" | nc 10.0.10.103 80 | grep Server
Server: Apache/2.4.7 (Ubuntu) <address>Apache/2.4.7 (Ubuntu) Server at scorpia.xinux.org Port 80</address>
Bannergrabbing mit NMAP
- nmap -sV -p 21 --script=banner 10.1.1.1
Starting Nmap 7.60 ( https://nmap.org ) at 2017-11-13 18:16 CET Nmap scan report for 10.1.1.1 Host is up (0.00028s latency). PORT STATE SERVICE VERSION 21/tcp open ftp vsftpd 3.0.3 |_banner: 220 (vsFTPd 3.0.3) MAC Address: 2A:2F:02:20:DA:5E (Unknown) Service Info: OS: Unix
Bannergrabbing auf Linux
Alternativ kann auch das Bannergrabbing-Tool "p0f" verwendet werden, dass jedoch nur für Linux-Systeme zur Verfügung steht
Install
- apt install p0f