Skip to main content

Tool to view/recover stored wifi passwords and source code analysis

so i was just walking around my space in the cybers (on twitter to be exact) when i came across this tweet by +KitPloit , one of my more reliable sources of new tools on the penetration testing and vulnerability assessment scene (i am not a hacker of any sort...lol). it mentioned how it was possible to "recover your stored wifi passwords" which my brain translated as "steal someone's wifi passwords" and i decided to check out what sorcery this was by analysing the source code..

the code on github by LionSec had just 120 lines in python and since it was supposed to work for both windows and linux platform (according to the code, mac wasn't supported yet), i assumed the section with respect to windows would be even shorter if you factor in error handling as well.

after checking the imports (sys, subprocess) i immediately realised that some system commands would be called from within the script and executed. that also meant that i could easily reuse that code if i decided to create a metasploit module in ruby.

one more little bit of knowledge i gained here was the platform library. this was my first time using it and it reminded me of when i first met itertools library after i had spent quite some time trying to figure out an efficient way to come up with a script that could go through all possible combinations of a sequence of 3 ports to find the correct port-knocking sequence for one pentest challenge VM i came across on vulnhub. but that's another story altogether...

so i ran a few simple tests with platform and checked its help options (in interpreter mode, just type in help(platform) and you're good to go). Turns out, you can view the system type, version, processor family and even more stuff on the machine the script is running on.

i skipped the linux segment of the code (that's for another post) and jumped straight into the windows segment. The data entry and option selection was simple enough, and then i got to the line i was looking for (line 79):

print check_output("netsh wlan show profile key=clear", shell=True)


i then typed in the command in quotes in command line and immediately got a list of all the wifi networks currently saved on my machine. interesting so far, but not what i was looking for exactly.


i went deeper and then found what i was looking for in line 86:


wifi2 = check_output("netsh wlan show profile name=* key=clear", shell=True)


i proceeded to type in the command in quotes again (but i replaced the profile name's wildcard option * with one of my listed wifi networks) and voila, i got the wifi password in all its cleartext glory!

considering how the execution of this command did not require elevation to administrator privileges first (or maybe i just didnt notice something) it should be possible to create a metasploit module or even a meterpreter script to do this if one does not exist already. so now i will proceed to inform everyone i know of this issue but i have no clue as yet that how can you mitigate it....

till the next blog! 

Comments

Post a Comment

Popular posts from this blog

Part 4 - Static and Dynamic analysis of a Remote Access Trojan

Now we delve into the world of Malware analysis, This can be either Basic static, basic dynamic, advanced static or advanced dynamic malware analysis. By static we just mean we do not execute the malicious program but simply analyse it by looking at the headers, the linked libraries it calls, its resources, etc. When it is advanced, this would mean breaking it down and analysing it with tools such as IDA Pro. Dynamic means we run it in a safe environment and see what it does. Basic tools include Regshot which simply takes a snapshot of the registry before and after the malware was executed. It then returns only the changes made in between those two points in time. Advanced would involve the use of a sandbox that monitors all the calls the malware makes as well as the connection attempts it tries to make to outside terminals or C&C servers. The video below illustrates Basic Static and Dynamic malware analysis.
Post a Comment
Read more

Password Cracking: RainbowCrack table generation, sorting and usage

I had to do this demo after one of my students asked for my assistance regarding how to use this tool. Usually, I just assign different tools to them individually depending on the aspect of penetration testing we are covering (session hijacking, vulnerability scanning, etc) and then tell them to submit a report and a video demo of how the tool is used. Anyway, after a brief one-to-one discussion I realized the student had actually done the research on how rainbow tables operate (above and beyond the material in the lecture slides) so I figured that if he was here asking for assistance, he genuinely needed it. The tool is available at the RainbowCrack site.  A detailed description of this nifty tool can also be found here . So, firstly I had to generate the rainbow tables. The command line syntax is: rtgen hash_algorithm charset plaintext_len_min plaintext_len_max table_index chain_len chain_num part_index where: hash_algorithm  Rainbow table is hash algorithm sp...
Post a Comment
Read more

Forensics: Recovery of Files Ep 2 - Data Rescue PC3

This is the second episode in the Recovery of Files series.  Episode 1  has a little more background on the whole aspect of file recovery. The video below shows a demo of how to recover lost/deleted files using the proprietary tool commonly known as  Data Rescue PC3 . As in episode 1, in the video, we format the USB drive, add stuff to it, and then format it again in order to recover the deleted files. Again, just like in episode 1, you will also note that not only the files we lost upon formatting are the ones that are recovered, but this will also include the files from previous drive formats too.
1 comment
Read more