We help IT Professionals succeed at work.
Get Started

Cisco rommon priv - estimating password from cookie

1,891 Views
Last Modified: 2012-05-08
I have a  2611 router that I need to change some rommon privilege mode things on, to do so I need to attain its password.

I've been told I can do this from its cookie.

Using this formula: (i1+...+i5) mod 2^16 where i1...i5 first five words in cookie. I'm not sure if this is accurate but if it isn't, if someone knows the correct way to do it please tell me.

My cookie is:

01 01 00 10 7b b2 e6 a0 43 20 00 ff 00 92 00 20
00 00 00 00 00 00 00 00 4a 41 42 02 32 30 30 59
35 02 02 00 00 00 00 00 00 ff ff ff 50 06 49 0b
18 0b ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff

I am not very good at math, but I need to figure out this equation to attain the password, and I need to find out if this equation is correct.


Here is more detailed information about the Equation:

http://www.netxsys.com/useful/ers.pp.ru/cisco/priv.html

Please Help.
Comment
Watch Question
This problem has been solved!
Unlock 1 Answer and 2 Comments.
See Answer
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE