NET Framework provides configuration files - app. But these are just text files, so they can be read by anyone with the proper permissions. What if I want to store sensitive information in this file, such as a password or a connection string? Fortunately, the. NET Framework also provides a mechanism for encrypting parts of a config file. This functionality is available in the System.
Configuration namespace in the System. Configuration assembly, so you will need to set a reference to this assembly Project Add Reference. NET tab and add the following line to the top of your class file using System. The ConfigurationManager. OpenExeConfiguration static method accepts the name of an assembly and returns a Configuration object that can be used to manipulate the config file.
It is important to remember that, when a project is built, the project's app. For example, the following code creates a Configuration object to read and manipulate the config file associated with the MyAwesomeApp. We can call the Configuration object's GetSection method to get a reference to a particular section of the config file. For example, if we want to work with the connectionStrings section, we use the code.
Now we can check to see if the section is already encrypted IsProtected propertyencrypt the section ProtectSection methodor decrypt the section UnprotectSection method. The following code encrypts the connectionString section.
The final step is to write changes back to the file by calling the Configuration object's Save method. Save. Here is a complete code snippet for getting a config and toggling the decryption of the connectionStrings section. For example, the following code. Encrypting and Decrypting application config sections - The Wit and Ramblings of David Giard Demanding rigidly defined areas of doubt and uncertainty.Remove 148 Extension Ransomware Windows 10 - New Decrypter With Offline & Online Key
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Home GitHub Photos. On this page Encrypting and Decrypting application config sections. Tuesday, June 5, Configuration; The ConfigurationManager. OpenExeConfiguration appName ; We can call the Configuration object's GetSection method to get a reference to a particular section of the config file. GetSection "connectionStrings" ; Now we can check to see if the section is already encrypted IsProtected propertyencrypt the section ProtectSection methodor decrypt the section UnprotectSection method.
Save ; The final step is to write changes back to the file by calling the Configuration object's Save method.Every internet router comes with a user name and password to gain access to its configuration pages. That is not a foolproof method because you still need to know the default password.
Using a search engine will bring up something but an easier way is checking at an online database for router passwords. Here are three websites you can check. At the very least, you will need to know the manufacturer of the router or the name of the ISP if the router came from your service provider. Knowing the model is also helpful but not essential. Between them, the three sites above list literally thousands of router models and their default passwords.
The chances are very good that the branded model or ISP supplied model is listed on at least one. If you have easy access to the router, simply looking at the bottom or back of it might show the default user name and password to get into the router. Many routers will either have the password printed somewhere on them or a small removable plastic card which might also contain default WiFi login details on the other side.
You can also try combinations between any of the below. Many Netgear routers default to admin:passwordseveral Zyxel routers use a combination of [blank] root admin, while D-Link routers often use admin:admin [blank].
Virtually all TP-Link routers use the same combination of admin:admin. This method will simply try to find the router password by making multiple attempts to log in to your router with different credentials each time.
This may not work if your router has built in protection against multiple failed login attempts. Router Password Kracker from Security Xploded tries to recover the forgotten router password through a dictionary attack. This means it works based on a list of words found in a dictionary file. The program itself comes with a password list passlist. Enter the IP address of the router, common addresses are A drawback of this method is you have to know or have a good idea of what the user name is.
If you have no idea, common names are root, admin, user, or even a blank user name. The chance of this working is obviously quite slim if you have changed the password to something personal.
At least this method is automated and much faster compared to manually trying passwords. If yours is the same, it might not work either. Download Router Password Kracker. The syntax is:. Like above, you need to know the username of the router or you can narrow it down to just a few possible options. Download Router Password Recovery. Note: A dictionary based option to crack a password is only as good as the list of words you are using.
In addition to the words in the passlist. Be aware that all entries in the list are case sensitive.A configuration backup is a binary file which your router can save to disk or other storage medium. It contains all of your current router settings. We recommend keeping an up to date backup of your router configuration in case it ever needs to be restored for example if a router is lost of damaged, or you make changes which you need to reverse. Always keep configuration backups safely as they do contain your confidential data.
To save or restore a config. In some cases, it is possible to take the configuration of an older model and import it into a newer model but do check compatibility before attempting to do so if you use an incompatible backup, you cannot damage the hardware but you could make it malfunction or inoperable.
Even if the models are compatible, it's not always possible to transfer all settings, particularly those which are supported differently on the other model or where a particular config combination causes anomalous operation. This convenience feature therefore cannot be guaranteed to work in every scenario and sometimes you may have to set up the newer unit manually instead.
If you wish to import a config from a different model then it is important that your older model backup was made from a compatible firmware version. If not, take a backup, upgrade the older router and then make another backup use distinct filenames each time. It is recommended to manually verify the settings after restoring a configuration of an older model because features and functionality can vary between models.
Numbers in brackets i. It is recommended to use the latest firmware for each model where possible. Note 2: The Firmware Required is the first firmware that is supported, later or current firmware versions are recommended.
A configuration backup from a router can always be restored back into the exact same router, or another router of the same model or model series but the units should be of the same firmware version see below.
It only takes a minute to sign up. My workplace has a standard that plaintext passwords are not allowed in application configuration files. This makes enough sense on its face, in case someone gets access to the config files they don't automatically have access to all the privileges of that application. In some cases it's possible and obviously preferable to have access associated with the login or otherwise avoid having a password, such as in Windows Security for SQL Server authentication, or have it configured in a third party location, such as JDBC configuration in a J2EE environment, but this is not always possible.
Perhaps taking one step back and comparing benefits of preventative and detective controls might help. Preventative controls include encryption but you could also encode the password to make it less obvious. This approach is meant to protect the password from accidental sharing a b32 encoding would produce less meaningful characters b32 produces longer string than b Such an approach just increases the difficulty of memorizing the random sequence of numbers as well as the method that should be used to decode the string.
The other approaches to preventative controls would likely use encryption. There are many different ways to protect the key. Without getting into the details or reiterating what D. For example, you can audit access to a file that contains the key. Any other access request successful or not to the key file could indicate abnormal activity. Encoding the password would reduce the chance that it's leaked in the event someone scrolls through the file, say with a vendor support rep watching.
Encrypting the password is much safer, but that requires additional complexity. How to deal with the fact that a key has to be hard coded or stored in another file. Well, separating the encryption key in another file increases the difficulty for someone to view the key.
For example, you can use access control to limit access to the key file but still maintain a more open ACL for the config file. Similarly, you can implement auditing for access to the key file, which you can use to correlate back to events that require use of key. Hard coding the key may be fine if you limit access to the binary. Careful encoding of password can easily be detected by running a "strings" against the binary.
Should the encryption keys for password be human readable? It depends. There's only a limited number of ways to protect the key. An encryption key is usually seen as an alphanumeric string that's hard to commit to to memory.
However, you can use simple "keys" more like passwords as input to a key expansion function.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again.
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Latest commit. Latest commit ca5 Jun 21, If not, write to the Free Software Foundation, Inc. Markus F. Introduction 1. The problem. The router's owner may forget his router admin password one day.
Resetting the device to factory settings may not be an option, e. Decrypt DrayTek config files 1. Decompress DrayTek config files 1. Decompress DrayTek firmware files 1. Extract filesystem from DrayTek firmware files 1. List of supported routers For config file operations, refer to the corresponding list. For firmware operations, most DrayTek Vigor 2xxx routers should be supported and some 3xxx also.
The master password generator seems to work for all the models that have been tested for firmware operations. Config file operations tested on: Firmware operations tested on: 2. Installation and usage 2. Known BUGs and other notes 3. Input is not validated, many stupid default assumptions are being made. Almost no error handling sorry for being so lazy.Since the web interface only shows the username, I tried the backup feature that dumps the entire configuration to a file that you can download.
Unfortunately, this data comes in an encrypted form… which makes an excellent exercise for a student of computer science. I created a codebook holding all pairs of letters and their encrypted counterparts by simply changing a random setting in the web interface, looking at the diff between this version and the previous one with VBinDiff Ubuntu package: vbindiff and writing down the encrypted version of the characters I previously entered.
Recovery of passwords from Draytek Vigor routers
Afterwards, a small Python script did the job of decrypting a dump file. It changes all characters for which no entry in the dictionary exists to null bytes and decrypts all others. Have you tried this against any other Drayteks? It may be my implementation though using C! If you want to find out whether your program is broken, use my script on your config file. As I said in the text, all characters which are not in the vigorcrypt file are substituted with null characters, so it is perfectly normal to find gibberish in the processed file.
The parts where the passwords are stored, however, should be plain text, though. Sadly it looks like Draytek have beefed up their encryption for the series and the smallest change in the configuration results in a very different backup config.
If a small change alters large parts of the file, they have switched from ECB mode to something different. If you have some patience and go deeper, you can grab the universal algorithm and also the key derivation function. All the tea in China kind kind sirfor details on how to strip the password from I have no hope in hell of doing any of the funky stuff you just mentioned.
We were totally held to ransomed by a networking company and they have refused to give us the password for our Hi I am trying to get hold of a way to read an old dsl password form a draytekAMMOnium can you let me know what the method was for getting the unencryted config file from the router?
Search for your user name, and it will be a little further along. I really need someones help in getting the password for my Draytek I do not want to reset it as there are a large number of settings that took me a long time to implement. I have a config file from a backup and a mac that runs python i just need a step by step plan of action as to how to run what needs to be run and where i need to put the script file and the config file on my mac. Thanks for all the good work guys! I am trying to get the cfg files but i got permission denied when i try to connect via ftp I did everything like AMMOnium said in his config tutorial.
I need to retrive the user name and passworsd for a Vigor Router that was installed approximately 4 years ago — installer is long gone and I can find no record of either. Any idea? I adapted vigorcrypt to my needs. I have a Vigor and for some reason when trying to do this method of password recovery I fail. I someone could kindly give my a detailed tutorial maybe even a YouTube video it would be greatly appreciated! Please keep in mind that I am not very good a Python coding or any coding for that matter, I just keep forgetting my router password and I think this would help.If you ever downloaded the configuration file from the hgc router, you might have noticed that it is encrypted.
Now you can! Thanks for this! Do you know how to decrypt the passwords in the config file by chance? Like Like. Thanks for the response. They may be encoding each password in a different way. Actually scratch that. It worked! Thanks so much. I spoke too soon. I tried a soft client and that logged in fine.
8 Ways to Access Router Settings With Forgotten Login Password
Please ignore my comment above about Windows… I was being lazy! I booted up a Linux VM and I can decrypt the passwords.
However, while some of the passwords decrypt to their text equivalent as expected, others decrypt to a long string of characters. I attach two examples below:. Is there any chance to get a hint were to get those keys? After digging in my unppacked Firmware and the released Sources it seems to use AES-Encryption encrypted in flash with 32Bytes, encrypted export with 32Bytes, encrypted Parameter with 16Bytes.
Like Liked by 1 person. HenryDelgado Hello, how did you extract the firmware from hgs? I have firmware version VRC57B I used your script and its working brilliancy i also used the hint for the HG and It Was Spot on If you have any idea how to get the Keys for HG it wil be most appreciated thanks.
Hello, this is me again trying to decrypt the config file of my Huawei HG I have found four. For the HGC, the keys were hidden in libcfmapi. Would make my life a little easier. It would be awesome if you could help!
Here you go. Just out of curiosity: were did you find the keys? Make sure to include python and python-crypto when installing Cygwin.