Ubuntu :: JTR Not Working - Got The Encrypted Password
Aug 9, 2011
I'm trying to work on the SmashTheStack wargame on Ubuntu, and I'm stuck at level 1 with using John the Ripper (JTR). I got the encrypted password and was able to run JTR on it using
Code:
but the output is
Code:
I'm pretty sure that the 'trying:' part is supposed to be the attempted passwords, but this one doesn't work, and this is the only one that gets output. When I run
Code:
I get
Code:
Which I'm guessing means that nothing happened.. what am I doing wrong, and how can I get it to work?
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Nov 8, 2010
I have a .rar in my Downloads, I want to unrar this file to my Music folder, but the .rar is encrypted and requires a password.
I've tried a few commands like this:
Code:
But it tells me no files to unrar.
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May 5, 2010
Didn't know where to post this as it doesn't really call under desktop or installations haha.Anyway, I have a bit of a problem. I've Installed Ubuntu 10.04 with and encrypted LVM password and it went on ok. When booting up the computer it comes to the screen where you enter your password to unlock the LVM which looks great.However after installing the NVidia graphics driver for the laptop and rebooting, the LVM password entry screen seems to be too big to fit on the screen, not looking very good....
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Jan 31, 2010
There was a recent thread in this forum regarding capturing of SSH passwords via the use of wireshark. The thread subject was closed, which is a decision that I both agree with as well as agree with the reasoning behind. The thread, however, raised a point of curiosity and concern that I would like to ask about. Quoting from a the book, SSH, The definitive guide,
The client authenticates you to the remote computer's SSH server using an encrypted connection, meaning that your username and password are encrypted before they leave the local machine. The SSH server then logs you in, and your entire login session is encrypted as it travels between client and server. Because the encryption is transparent, you won't notice any differences between telnet and the telnet-like SSH client.
I was under the impression that SSH was impervious to this type of eavesdropping, and quite frankly I take great comfort in that idea. I personally, only allow RSA keys for SSH access and (hopefully) avoid this problem (?) as a result. Does SSH really have a vulnerability in that the authentication is sent via plain text? How to ensure the security of SSH and not on anything that could be considered a how to 'crack' it.
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May 8, 2010
I've set up a Lucid system with software RAID and encryption, with three encrypted partions - swap (/dev/md1), the root filesystem (/dev/md2), and /home (/dev/md3). The unencrypted /boot partition is /dev/md0.
This works well but the passphrase had to be entered three times at bootup. Obviously it would be preferable to enter the passphrase once to unlock the root partition, then have the others unlocked via key files. So I added key files to the swap and home partitions and modified /etc/crypttab to use them:
Code:
md1_crypt UUID=8066adbc-584c-4766-b188-bc2a7b61a2f0 /root/keys/swap-key luks,swap
md2_crypt UUID=bac82294-f3b9-45e4-89ad-407cf8b19b7b none luks
md3_crypt UUID=7d82a0b7-c811-4cc3-9fe7-1961c74b5ff2 /root/keys/home-key luks
The key files are owned by root and have 0400 protection. (The /root/keys
[Code].....
Since the swap partition is no longer referenced in fstab or crypttab, why is there still a bootup password prompt for it? What else needs to be done to stop it?
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May 14, 2010
I want to have /boot as an ext2 (I don't need journaling and I might want to undelete something) and all other partitions in an LVM.When the server starts it will prompt me for the LVM password. I would like to be able to contact the server using SSH (or using another secure method) and tell the password. Since /usr/sbin and all the other partitions are inside the LVM I guess I have a problem?
Is it possible to setup something like this? The SSH session for the LVM authentication does not have to be a daemon. It can be something which just sits and waits until I connect and input the password. And then the "real" SSH deamon kicks in.
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Feb 6, 2011
I installed 10.10nbr on my wife's eee 901. Now she cannot remember her password. I've tried booting to recovery to use the passwd command, but that does not work. I believe I encrypted the home folder when I installed. Normally if I don't encrypt home, then I enable auto-login.
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Apr 25, 2011
I'm running Thunderbird with Enigmail, and I have this very annoying problem. When I open an encrypted email for the first time, it asks me for my key password. It then remembers my password. This is fine for a few minutes, since I don't want to enter the password every time if I look at seven emails in five minutes. However, I WOULD like it to EVENTUALLY forget. At the moment, it doesn't even forget if I shut off Thunderbird. I have to restart my computer, in fact.
The preferences for Enigmail don't help. I've configured it to remember the password for 0 minutes, for example. I don't know how to edit the preferences for gpg-agent or anything else like that.
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Mar 10, 2010
When I first installed 9.04 (from scratch), I chose the option to have my entire account encrypted... I used the same password as my login password, and wrote down the key hash that it displayed for me just like instructed... everything was working terrific...Well, yesterday, I wanted to change my account password. I changed my account password, and it took effect immediately (I tested it by using "sudo -s" to see if I could elevate to root from the terminal... worked just fine). Being satisfied with my new password, I shut my computer down...
The next time I started it up and tried to log in to my account, it I put in my username and password and pressed enter, and it accepted it just fine, and started to boot to my desktop... it then immediately prompted me with something about "your session lasted less than 10 seconds, try starting in failsafe mode" or something along those lines, and immediately booted me out and back to the gdm login screen... I thought it was just a glitch so I tried again... same thing... gave me the "less than 10 seconds" prompt and booted me back to the gdm...
I thought maybe my filesystem became corrupted, but I didn't give up... I attempted to login to my fiancee's account, and it worked just fine! Using her account, I was able to quickly and safely boot into her desktop environment with no errors...I opened a terminal and used the "su" command to access my account... When I did this, it gave me some kind of error and told me to run ecryptfs (can't remember exactly which command... now). I ran ecryptfs and put in my NEW password... it told me that the passphrase was incorrect. So just out of curiosity, I ran it again, and this time put in my OLD passphrase, and it worked immediately! At this point, I realized that my gdm login password got changed, but my ecryptfs passphrase did not, and the two were not matching up (I assume that on login, gdm passes this password on to ecryptfs, and that when the two did not match up, it was booting me out with the whole "session lasted less than 10 seconds" prompt...)...
So what I did at this point was, while logged into my girlfriend's account, I "su"'d into my account, and used the passwd command to change my password back to my OLD password... once the password was changed back successfully, I restarted my computer and tried to log into my account from the gdm... worked perfectly this time with the old (original) password...When you change your session password, shouldn't it automatically change the encyrption password to match? Or at the very least, warn you that if your account is encrypted, you must take further steps to make these two passphrases match? Also, what command would I use to change my "ecryptfs" password to manually match my session password?
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Apr 20, 2010
I remember that some time ago I found a guide on the Ubuntu website about adding samba shares to mount at boot via /etc/fstab. The guide also mentioned using a credentials file to store the username and password.
However, the password was encrypted (in md5 I think) and it could not be read directly, but it still worked with fstab mount. If I remember correctly, the file contents were similar to this:
Code:
useraname = user
password = --md5
where was replaced by the encoded password. All was done in terminal. Recently I changed computers, and re-installed Ubuntu, but I forgot to save that file so I am not sure about the contents. I would like to know how to do this again, but I can't find the guide anymore. Does anyone know how to do this? Storing the password in plain text in file readable only by root is not acceptable because it can be read by someone mounting the drive from other operating system, and the share cannot be mounted/unmounted by regular users (which is possible with the md5 encrypted password).
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Nov 27, 2010
I've created encryption systems on servers, but nearly always I have stored the password somewhere on the machine itself. The file is always 0600 to the relevant user, but a systematic analysis of my system could easily find the scripts that invoke decryption and discover the password. (The most blatant example of this is mounting SMB shares with the "-o credential_file" option where both the username and password are plain-text. In the cases where I've used this, the security of the share hasn't particularly mattered.)
Soon I might be faced with storing "patient health information" (PHI in the healthcare world) whose privacy is heavily regulated by the provisions of the US law called HIPAA. I've been thinking about creating an encrypted partition to hold the PHI, but I need a highly fault-tolerant method for obtaining the key from a different machine than tha server itself. At first, I thought about running a script using scp and shared keys to copy the key from the remote, use it to decrypt the partition, then erase it. I'd like to be able to do this with a pipe; otherwise I'll write the key in a non-persistent location like /dev/shm.
I need more than one machine to make this work to ensure I can obtain the key when needed (like at boot). One solution is to place copies of the key on multiple servers and try each of them until I find it. A more elegant solution would place the key in a DNS TXT record. I suspect I could use LDAP for this as well, but OpenLDAP and I have never really been on speaking terms. So does this make sense? I presume I can write a bash script to do all this at boot. Most of what will be stored in this partition is the PostgreSQL database in /var/lib/pgsql and perhaps some other files.
My understanding of encrypted file systems is that they are only encrypted when unmounted. When mounted they must be as visible to the operating system as an unencrypted partition. I suppose you could apply encryption to every single disk transaction, but that would require knowing the key all the time, and would seem to add a lot of overhead.
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May 21, 2010
So in an environment where I have 40+ sets of completely unique sets of logon credentials. The only way I've been able to manage this is by keeping them in a hidden and heavily encrypted text file in my home dir.Would like to hear alternatives to this approach if there are any, BTW. Right now I have a script that automates the process of un-encrypting the file, launching an editor and then clean-up with shred -u after editing and re-encrypting.
What bugs me is the interim where I have the file in an un-encrypted state on my drive. It doesn't seem necessary. I have a view script that allows me to see what's in the file without saving it to the drive.
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Feb 28, 2010
I just installed CentOS 5.4 (x86_64) and I encrypted my /home /var /tmp and /mnt/Storage partitions, along with my swap partition. My only complaint is that when I boot, I have to enter my password 4 times, and I did not pick a short password. The password is the same for all 4 partitions. Is there anyway I can set things up so I can just type my password once? Once I get everything set up, I won't be booting that often, but right now it is a PIA.
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Apr 12, 2009
I have F10 installed on my laptop with disk encryption enabled. When I boot the machine I get a "Password:" request on screen but can't start typing for 30 seconds or more.Presumably the OS is not ready. This means I have to wait at the keyboard tapping a key until I see asterix. It's a waste of time and frankly a bit clunky for a modern OS. How can I change the behaviour so that the "Password:" request only appears when I can actually type?
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Jul 27, 2011
I just upgraded from F14 to F15 and have a problem with entering the password for the encrypted FS: when booting with the latest entry in the bootloader:
Quote:
kernel /vmlinuz-2.6.38.6-26.rc1.fc15.i686.PAE ro root=/dev/mapper/vg_anonymous-lv_root rd_LUKS_UUID=luks-3ef72221-1165-46a6-ab69-3932e22e9d4f rd_LVM_LV=vg_anonymous/lv_root rd_LVM_LV=vg_anonymous/lv_swap rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=de
initrd /initramfs-2.6.38.6-26.rc1.fc15.i686.PAE.img
[Code]....
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May 29, 2011
I have installed debian 6 on two of my laptops. During installation I chose to encrypt my partitions (swap, root and home). Now I find it annoying that during boot up I'm asked for password, for each of these partions seperately. I have given same password for all three of them. How can I make the system ask for the password only once. I know it can be done because on fedora it was like that before.
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Mar 4, 2010
I have installed fedora 11 in my system. While installing it asked me encrypted password which i passed. But I forgot that. Now the problem is whenever i boot my system before going to root itself it is asking for volume encrypted password, which as i told you i have forgot. Now i am not able to access my hard disk since it is completely locked. Is there any way to decrypt the password or unlock it. Or if that is not possible can data be recovered,which is my primary requirement..
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Mar 4, 2010
I have installed fedora 11 in my system. While installing it asked me encrypted password which i passed. But I forgot that. Now the problem is whenever i boot my system before going to root itself it is asking for volume encrypted password, which as i told you i have forgot. Now i am not able to access my hard disk since it is completely locked. Is there any way to decrypt the password or unlock it. Or if that is not possible can data be recovered,which is my primary requirement..
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Mar 21, 2011
I followed this tutorial to encrypt my entire installation: SDB:Encrypted root file system - openSUSE
It worked splendidly and whoever wrote it should get a lifetime supply of beer. After I got the install encrypted I made a RAID 1 array of 2 1GB disks and encrypted that as well. They are used for a data repository.
[Code]...
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Jan 14, 2010
I would like to grep all values other than encrypted password from /etc/shadow fileFor example,each line consists of 8 fields separated with :/The only thing that I want not to print out is the contents between first : and second : (encrypted password)
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Jul 14, 2011
there are some configuration files where linux require the password of application user, to do something.how can i to encrypt the password in these files? Or how can i to store that password in encrypted file and retrieve it in secure mode?
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Apr 23, 2010
I thought these were the same password?In-fact, they WERE the same password on the set-up I currently have.But now, weirdly, I can log in fine but I the exact same password is not using in order to perform admin tasks.I've tried a recovery mode, console, and then "password (username)" in order to reset the password.This does reset the password I need to use to log in, but the password still does not work for performing admin tasks
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Apr 23, 2010
Is it possible to have the passwd file for svnserve encrypted, rather than store the usernames/passwords in plain text?
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Mar 2, 2011
I have installed Ubuntu 10.10 to a live USB stick and created a new user with an encrypted home directory.Everything is working fine apart from a weird problem.when I create a new file or directory in the encrypted home it does not show up in directory listing.eg:cd ~/Documentstouch test.txtls -aldrwxr-xr-x 2 USER USER 4096 2011-03-02 14:12 .drwx------ 32 USER USER 8192 2011-03-02 13:03 ..if I try editing the file by entering the path, it works, even though ls does not list it!eg: nano ./testls as root makes no difference and the file is not hidden.If I create a file in nautilus, it shows there but still does not show in the terminal or any other app
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Mar 7, 2011
I installed Ubuntu 10.10 64 on my laptop with the entire 500gb setup as encrypted LVM. This has worked well for several months with no problems. During this time i have been backing up the data to an external usb drive (1tb) on a regular basis. The usb drive was not encrypted. So, I thought it would be a good idea to encrypt the backup drive too. I wiped out the backup drive and set it up as one large encrypted lvm and mbr. This seemed to work fine but immediately afterwards I decided to erase that and set it up as encrypted lvm guid instead of mbr. I couldn't delete it while logged into my desktop so i decided to do it from a bootable gparted usb stick. In gparted i erased the 1TB backup drive once again and planned on setting it up the way I wanted once I was logged back into my ubuntu desktop. Now I cant boot into my desktop with the following errors:
cryptsetup: evms_activate is not available b0d) does not begin with /dev/mapper/
Then after waiting for a few minutes I get an error followed by (initramfs)
When booting from a live version of ubuntu the 250MB boot patition is recognized and 500 partion is there but it is labeled as empty/unused.
Also, I did choose to use the exact same passphrase as what is used on the main bootable drive when I set up the encrypted partition on the external 1TB drive.
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Oct 28, 2014
I tried a while getting a live system working with encrypted persistence. The command
Code: Select alllive-persistence activate /dev/sdx2
works perfect, but boot time persistence works only for unencrypted storage. 'Cause I can not append the boot-log as file the most important part here:
Code: Select all+ tailpid=123
+ tail -f boot.log
+ cat /proc/cmdline
+ LIVE_BOOT_CMDLINE=BOOT_IMAGE=/live/vmlinuz boot=live noeject keyboard-layouts=de components persistence persistence-encryption=luks,none initrd=/live/initrd.img debug=true
+ Cmdline_old
+ PERSISTENCE=true
+ export PERSISTENCE
[Code] ....
The most confusing line is "Warning: cryptsetup is unavailable" - I took a look into the scripts, it checks if cryptsetup and askpass is executable if not this message. But:
I mounted the hdd-img file local and took a look: all binaries there.
So I tried a lot getting it working on boot time. I tried it with live-tools from testing, from wheezy and last but not least installed and pinned live-tools to unstable. Always the same. askpass isn't executable on boot time before mounting the persistence.
Config is
Code: Select alllb config noauto
--apt apt
--bootstrap debootstrap
--binary-images iso-hybrid
--distribution testing
--mirror-bootstrap http://ftp.debian.de/debian/
[Code] .....
(tried with binary-images=hdd, too)
and yes, cryptsetup is inside package-list (otherwise live-persistence from within running machine with crypted partitions would not work). Live tools I used for last run is 4.0.3-1 from unstable, before tried with 4.0.2-1 from testing.
Whats going wrong in boot system?
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Jan 5, 2010
I've just started using ubuntu one. However, some of the files I store on there are sensitive so I encrypt them using seahorse. Right click, encrypt etc etc. My question is, is there a way to automatically get the encrypt process to delete the un-encrypted file when it makes the new encrypted copy?
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Mar 22, 2010
Every time i contact to wireless I have to put wpa code in but then it asks for password to unlock which i put in then it asks again and so on, i googled problem found it sayes to delete files in .gnome2 reboot then start again is this correct [URL]
Or is there another way i,e remove keyring
Code:
sudo apt-get purge keyring
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May 9, 2010
my root password seems to not be working but it does when I use "sudo".
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Jul 12, 2010
i dual boot with Ubuntu 10 and Windows 7 ,everything was working fine, then i went to boot into Ubuntu, and my password was not working I did the steps on this[URL]...
I did both methods, neither worked When i did the method on the ..... video, i did not see my username or pssword in the Shadow file.
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