For the second example, we will use a simple program called cisco_crack ( http://insecure.org/sploits/cisco.passwords.html ). This tool is used to crack the Cisco type 7 password.
After downloading the source code, the next step is to compile it. Before you can compile the source code cleanly, you need to add the following include statements:
Now, you have four include statements in the source code.
To compile the code, you can just give the following command:
gcc cisco_crack.c –o cisco_crack
If there is no error, an executable file with the name of cisco_crack will be created. The following is the help screen of cisco_crack :
Usage: ./cisco_crack -p <encrypted password>
./cisco_crack <router config file> <output file>