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Root me ctf solution

After searching for some ideas about command injection on google, I found this. You must try it to know what it is. If you want to run a reverse shell like that, you should be able to access your router to NAT ip or it will be easier for you if you have a vps, but I dont have money and I cant access to my router to nat my IP so … base on that idea, I come up with this solution… 1.

I make a request using wget to force the challenge server to download and execute my PHP script 2. My PHP script on challenge server will read index. My server will receive all messages from challenge server. Sound good :LOL:. For this great work. Published by taind Security guy View all posts by taind. Like Like. You are commenting using your WordPress. You are commenting using your Google account. You are commenting using your Twitter account.

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Notify me of new comments via email. Notify me of new posts via email. Share this: Twitter Facebook. Like this: Like Loading Published by taind. Leave a Reply Cancel reply Enter your comment here Fill in your details below or click an icon to log in:.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. This repository houses my personal solutions to Root Me's programming challenges.

It is strongly encouraged that you do not view my solutions unless you've already solved the relevant problems yourself. Assuming a correct and timely submission, a level unlock flag is revealed. This flag must then be POST -ed back to the original challenge endpoint via an authenticated session to receive points. All original code is released under the MIT licenseunless otherwise specified. All referenced product names, trademarks, logos, and images are property of their respective owners.

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root me ctf solution

Go back. Launching Xcode If nothing happens, download Xcode and try again. Latest commit. Latest commit 18ef50a Jul 13, Local Environment Linux Node. You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Add a solution to challenge 5.

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Mar 25, Rename import. Initial commit. Mar 24, Update dependencies to address CVE Jul 13, Expand on background information.The idea behind steganography is embedding plaintext messages in places where an unsuspecting user would not think them to be present. During steganalysis, our objective is to discover where and how these plaintext messages are hidden within the provided files or data. Steganalysis is a process of trial-and-error.

The solutions provided below offer only the correct approaches to solving particular steganographic challenges, while skipping the unsuccessful attempts for the sake of brevity. These challenges require that you locate passwords concealed in a variety of file types. In fact, the password is in plaintext and the challenge lies in locating it in the provided file. Please be advised that the following content provides solutions to the intriguing steganographic challenges on Net-Force.

It would be unavailing to read further without having tried your absolute best at the challenges first. Solutions to Steganographic Challenges 1 to 7.

This is a starter challenge to get one acquainted with the concept of steganography and is therefore quite straightforward. Notice that the image does not open in the browser. This is our first clue that it is not a GIF image as advertized. This one is even simpler than the previous one. The password is clearly visible in the binary pattern on the screen [Figure 3]. This challenge offered us a simple JPEG image and asked us to locate the password within it.

So we focus our attention on the bytes stored within the image. To view the hexadecimal bytes within the image file, a hex editor is required. Here, when we view the raw data inside the image, wenotice a binary sequence in the ASCII view of the data [Figure 4].

This challenge is a little different in that it presents us with something that seems more like a riddle rather than a file [Figure 7]. However, bear in mind that this is a steganography challenge and so the password must be hidden in plain sight within these words.

You could try all words as possible passwords, but such mindless brute forcing would be cheating and no fun. We need to discover the logic in the challenge. If you look closely, the words in the text are rather oddly placed. This provokes us to either re-arrange the words until a pattern emerges, or to simply skip certain words. Once more, we are provided with an image file and we need to extract the password out of it. Our first clue is that the image contains vertical lines separating certain colors.

The first intuition is that each of these colors may represent a letter in the password. We need to determine how the alphabets were mapped to these particular colors. To reverse the process, we open the given image in an image editor such as GIMP.

For example, GIMP shows us the following details corresponding to the first color from the left [Figure 8]. Notice the HTML notation of the color. These patterns are clearly hexadecimal representations.

root me ctf solution

In this challenge, we are provided a small icon image that contains a hidden password. To commence steganalysis, we first make sure that it really is an icon image file. Next, we take a look at raw hex bytes of the file to detect any anomalies or patterns. It is easy to browse through all of these hex bytes in the hex editor since the file is very small in size.The following is a walk through to solving root-me.

Check source code. Using an online md5 hash to text converter, we see the value represents the hashed value of the particular url. Start tamper data and click the facebook link. Then submit the page. Authorization can sometimes be bypassed by tampering with HTTP methods. Sometimes you can trick the web server into accepting your php file by adding an acceptable file extension jpg, png, gif to the end of the php file extension.

After uploading the file, we navigate to it and inject our command into the url. Click icon on our file and, like before, inject our command into the url:. This challenged really irritated me because it took me 3 different plugins to find one that would work.

Once I did, solving the challenge is a no-brainer. Checking the url:. In the browser click the link once more to find the validation password. Passing this level is super easy. Use the same shell as before. Say your the file name of your shell is shell. Rename it to shell. When submitted, the. Once the file has uploaded, click it.

The parameter galerie displays different categories.

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Move your mouse above the icon and right click, select inspect element to get the full folder name. Right click and view the source code. It forces PHP to base64 encode the file before it is used in the require statement. Skip to content The following is a walk through to solving root-me. HTML As always, check the source code for the password. Post to Cancel. By continuing to use this website, you agree to their use.

To find out more, including how to control cookies, see here: Cookie Policy.Me and My Girlfriend is another CTF challenge given by vulnhub and the level difficulty is set according to beginners.

Solutions to Net-Force Steganography CTF Challenges

You have to hunt two flags, and this is a boot to root challenge. Download it from here. First of all, we try to identify our target. We did this using the netdiscover command. Now that we have identified our target using the above command, we can continue to our next step i. We will use Nmap to scan the target with the following command:.

Without wasting time, I had edited the rule for the request header for x-forwarded-for: localhost in the burp suite and try to intercept the web page request along this. Once you have an intercepted request, further you need to forward this request again and again till you receive the response on the web browser.

And finally, you will be able to access the web page for the Ceban Corp company as said by the author. On this page I saw 4 captions that contain some hyperlink.

Since I was failed to enumerate any vulnerability, thus, register a new account by name of raj. Since we have enumerated credential for the user alice therefore, further I used this credential to access host machine shell through ssh. Without wasting time, I looked for sudo rights and fortunately found that alice can run the php program as a sudo user.

Then I start the netcat listener in a new terminal and run the php reverse shell command in the host terminal. We got the root shell through netcat session and inside the root we found the final flag.

Connect with her here. I did it using the Pen test monkey reverse shell but. Any help will be appreciated. Your email address will not be published. Notify me of follow-up comments by email. Notify me of new posts by email. Username: alice Password: 4lic3.

Username : alice. Password : 4lic3. Like this: Like Loading Leave a Reply Cancel reply Your email address will not be published. Username : alice Password : 4lic3.I decided to start getting habit of taking note after this tragedy happens Thanks reznok!!!! First, we must steal the token by using XSS. Second, we create crsf form that get token and submit request.

root me ctf solution

This challenge is quite easy but seems like people hate MIPS, so there are not much solves. First, program read input from stdin through fgetsand check to see if input string length is equal 19 or not. Which mean. Those memory offset will hold value that equal to "i".

Me and My Girlfreind:1 Vulnhub Walkthrough

Next is an if statement that check whether an fixed address hold an char it want. Now we can build an string from array from -0x54 to -0x42, which is also flag:. Config IDA :.

Thanks god this is not stripped binary :. Debug to find which byte array it compares with :. First thing first. And hit enter to check, if you satisfy some requirements, it will print flag.

Since i dont know where to start, so i start with string, trying to find its xref. Trace from 0x0C0B0, we found :. Doing the samething with others check point, we know that, when you press a key :.

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Then it check to see if we satisfy all below constraints then print flag. Now we need to know what's its initial value, time to use bgb to debug :.

So initial value is :. Time to get flag :. About me. Realworld CTF - Final. Matesctf - - Round 2. TetCTF - Insomni'hack teaser Codegate CTF Preliminary.

FireShell CTF Matesctf - - Round 3.This is my write-up for a small forensics challenge hosted on root-me. The goal of this challenge is to teach individuals the basics of performing forensics on a memory dump. The whole challenge is broken down into 5 levels and I will be using Volatility to answer each one. The goal of level two is to discover the hostname of the infected workstation. This is necessary as Volatility differs on how it processes data for each profile. By selecting one of the profile Win7SP1x86 for mewe proceed with our analysis.

Root-Me Web Server Challenge Solutions

Now if you have some experience in performing forensic analysis on a Windows machine, you know that the SYSTEM registry hive holds a wealth of information about the system. One of which holds the hostname of the machine. So we use the hivelist and printkey plugins to get this information.

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This will give us the hostname of the workstation. The goal of level 3 is to find the malware on the memory dump and create an MD5 hash of its full path. Ok so this can be overwhelming at first. But upon careful analysis, we can see two interesting processes from the process tree. The reason why this is interesting for me is that the process cmd. This is not a normal behavior and needs to be investigated further.

By using the cmdline plugin, we can confirm that this iexplore. The goal of level 4 is to find the IP address of an internal server used by the attackers. This can be a little bit tricky. We use the netscan plugin to display any network connections associated with PID We know that the malicious iexplore.

So it is possible that the attacker executed commands through the command prompt to launch a tool or a malware to obtain sensitive information. Following that thought, we use the consoles plugin to search for possible commands our attacker typed into cmd.

Aib. dbbi20. giorgi, ignazio

By using the consoles plugin, we discover an interesting command executing tcprelay. Tcprelay is a connection forwarder that can be used to forward connections between two different networks. As I see it, there is a possibility that the attacker is using tcp relay to pivot from a DMZ to an internal network in order to compromise other machines.

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