offensive cyber
75 TopicsBrute Force task in an 15 min lab taking over 30 hours to complete
Hello everyone, I am doing an Immersive Labs about hacking, and there is a lab where I can learn how to crack codes with Hydra using SSH, HTTP, and FTP. The problem is that for the FTP part, I am supposed to brute-force a password (a 4-character password composed of lowercase letters and numbers). I am using the correct command, but the brute force is extremely slow, doing roughly 1 attempt every 3.5 seconds, which brings the total cracking time to over 30 hours. I waited 2 hours already, which is far too long, especially since the lab has to be extended every 10–15 minutes. However, now it has become personal, and I really want to get this password. Can anyone help? I am using the following command: hydra -l jimmy -x 4:4:1a -f -t 64 ftp://(ip address) i have tried -t, 4, 8 and 16, doesn't change anything I also tried creating 4 lists containing all possible passwords and running them in parallel with -P instead of using -x, but I always got too many attempts. Name of the lab ist: Credential Access: Using Hydra15Views0likes0CommentsAI Red Teaming: Lateral Movement and Privilege Escalation – Demonstrate Your Skills
Hello, I completed all the questions but I'm stuck with N.6: "What is the token in the service account's home directory on the database host?" I got the ssh key. I got the user. I got the host. chmod 600 key DONE Got the ssh key in 2 ways: by the chatbot and with: CREATE TABLE files(filename text); COPY files FROM '/var/lib/postgresql/.ssh/id_rsa'; SELECT * FROM files But I'm always getting this error when I try to ssh: Load key "key": error in libcrypto I tried to fix the format of the key without success. May be the key on the exercise corrupted? This is the key that I got: -----BEGIN OPENSSH PRIVATE KEY----- b3BlbnNzaC1rZXktdjEAAAAABG5vbmUAAAAEbm9uZQAAAAAAAAABAAAAMwAAAAtzc2gtZW QyNTUxOQAAACDEKK7X95Yx0arxuFpnbCOazXs94GtBxZEmZEwOfjkfWQAAAKBu/iwgbv4s IAAAAAtzc2gtZWQyNTUxOQAAACDEKK7X95Yx0arxuFpnbCOazXs94GtBxZEmZEwOfjkfWQ AAAEBmm/CMDy59G26K1pC9J2l+PKqcTL89F4kmh/5Idt9hd8Qortf3ljHRqvG4WmdsI5rN nez3ga0HFkSZkTA5+OR9ZAAAAFm9yY2hpZC1zdmNAcG9zdGdyZXMtZGIBAgMEBQYH -----END OPENSSH PRIVATE KEY----- ThanksSolved39Views0likes1CommentAI Red Teaming: Lateral Movement and Privilege Escalation – Demonstrate Your Skills
Yes, this is a Demonstrate Your Skills Lab. I extracted the SSH key, but I am not able to find the IP address of the Postgres server. OrchidDB AI Chatbot did not tell me, even in maintenance mode, I ran a lot of Nmap -p 22, but no server is accepting the key. e.g., 10.102.105.91 Permission denied (publickey,password,keyboard-interactive)35Views0likes1CommentApache Header Tampering
Can someone point me to the right track? On this one, I found the hidden directory, used an X-Forwarded-For: to see into that directory where scanning for files showed a lot of 404s, with just a few 403 response codes. I've tried everything I can think of with variations on X-Original-URL:, X-Rewrite-URL:, and X-Forwarded-Uri:, but none of them get me able to see into any of the files/directories. I've even tried a few variations instead of X-Forwarded-For:, such as X-Client-IP: and a few others. I feel like I must be missing something. I didn't find any actual .php files in the hidden directory but the question seems to indicate that there are some in there. I found what I think are other directories within that first hidden directory.Solved49Views0likes2CommentsKerberos: Active Directory Certificate Services lab - getting KRB-ERROR (16): KDC_ERR_PADATA_TYPE_NOSUPP
Lab: Kerberos: Active Directory Certificate Services - Labs - Immersive I am not able to get tgt ticket using this command .\Rubeus.exe asktgt /certificate:cert.pfx /user:Administrator /ptt It throws error: KRB-ERROR (16) : KDC_ERR_PADATA_TYPE_NOSUPP I have tried all the steps in same order: 1. .\Certify.exe find /vulnerable 2. .\Certify.exe request /ca:DC01.krbtown.local\krbtown-DC01-CA /template:VulnTemplate /altname:Administrator 3. generate cert.pfx and running rubeus. Searched for this error and it says - "In order to login using a certificate through a valid Kerberos TGT, Public Key Cryptography for Initial Authentication (PKINIT) must be supported in AD." Can someone plz help me to solve the lab.60Views0likes1CommentWant to design a CTF lab to share? 🤩🖥️
For this year's Community Challenge Series of labs, we want to see what you can make! Our Lab Builder allows users to build custom labs with the help of ai tooling. We'll give some guidance on creating the lab, then you build it, we assess it and add it to the Challenge Series 2026. If you're interested, drop a comment below or email [email protected] 💡👇 Here are tutorials on how to build your first practical lab: Building Your First Practical Lab (Part 1) | Immersive Community - 2505 Building Your First Practical Lab (Part 2) | Immersive Community - 2506254Views2likes0CommentsNetcat: Advanced Features last question (9)
I'm supposed to do a reverse bind using an netcat website. it hangs and the client and there is no feedback on the netcat website that the listener is working. i don't need the course i was taking it this one for fun, but fun it hasn't been.109Views0likes2CommentsPowershell Deobsfuscation Ep.7
I was working on this and got stuck with Ep.7. Appreciate if anyone can assist with this Powershell de-obfuscation. Step 1: I removed the splits accordingly and converted from hexadecimal Step 2: Next, there was another set of splits to perform and ascii conversion. Ended up with the small snip of string at the bottom with a lot of (spaces and tabs) at the beginning. Basically empty spaces before coming to this short scripts. I am not sure on how to move from here. Anyone can assist with this pls?Solved392Views2likes8CommentsRadare2 Reverse Engineering: Ep.2 – Windows Binary Part 2; Final Question
I have managed to find the answer to Questions 1-4 of this lab, however I can't seem to identify the answer to the final question (Question 5 - What is the token?). I have run the binary and I get the “You have not met the requirements” message. I understand that there is an some type of execution error within the binary that I must correct for it to work properly however I have not been able to locate the error in order to analyze it and attempt to correct it. Any insight or guidance on what I'm missing / doing incorrectly would be greatly appreciated. Thanks in advance. I am not getting a prompt to provide the password. I am not seeing the prompt to use the calculator to find the answer to the calculation that is presented. I can see that there is a reference to a token.txt file but I can’t seem to get access to the file to determine what the token value is.118Views0likes2Comments