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Recovery Cookie Cisco 2801

Hi, i'm building my CCNA Voice lab, but my cisco 2801
problem is cookie corrupt.

i need password for rebuild try at this  website https://secure.corradoroberto.it/cisco/Online_password_calculator_for_Cisco_rommon_command_priv.py

but dont work.
the password dont macth

rommon 30 > priv
Password:
rommon 31 > priv
Password:
rommon 32 >

Cookie is:

cookie:
04 ff 09 86 ff ff ff ff ff ff ff ff ff ff ff ff
4f 43 31 32 30 31 30 38 51 5a 40 04 1c 41 07 00
82 49 1f fe 07 42 43 30 c0 46 03 20 00 5b 8b 05
88 00 00 00 00 02 04 c6 8a 49 50 4d 37 56 30 30
43 52 41 03 00 81 00 00 00 00 04 00 cb 89 43 49
53 43 4f 32 38 30 31 89 56 30 34 20 d9 02 c1 40
09 86 c2 8b 46 48 4b 31 32 30 32 46 33 4a 48 ff
ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff


Thanks!!!

Everyone's tags (2)
1 ACCEPTED SOLUTION

Accepted Solutions

Does it boot to ROMMON and

Does it boot to ROMMON and won't let you boot the IOS?

5 REPLIES

Does it boot to ROMMON and

Does it boot to ROMMON and won't let you boot the IOS?

Hi, router lost mac address

Hi, router lost mac address in eeprom.

start ios but crash when ethernet ports start

i need write a new mac address in eeprom;

but need password to enter priv command at rommon

Using this tip , worked! http

Using this tip , worked!

 

http://zuzububu.wordpress.com/category/cisco/

 

 

 

New Member

Hi Daniel, I too am having

Hi Daniel, I too am having this problem with a 2801.

I have the same first line and cannot seem to calculate the correct password despite many tries, same on my other working 2801 with a valid cookie.

04 ff 09 86 ff ff ff ff ff ff ff ff ff ff ff ff

 

I was wondering if you remembered the password you used?

 

Many Thanks,

Lewis

Hi Lewis, i used this to help

Hi Lewis, i used this to help me and i calculate the password

http://www.chainringcircus.org/hacking-rommon/

 

In my case is this 

rommon 1 > cookie

cookie:
01 01 00 12 01 fd 68 60 43 20 01 ff 03 6d 00 20
00 00 00 00 00 00 00 00 46 4f 43 08 38 32 43 52
57 03 01 00 00 00 00 00 00 ff ff ff 50 06 49 1e
4a 05 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

 

01 01 +

00 12 +

01 fd +

68 60 +

43 20         =  AE90 

 

And worked i can use the router and now is working fine.

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