defensive cyber
76 TopicsMalware Analysis: Shlayer
I've done the first 2 questions but stuck on the 3rd - what is the XOR key? Is this found in the first or second stage 7z compressed file? and....the lab description mentions Cyberchef - is this available in the lab? (as you cannot copy and paste out of this lab) I just have this and the Qakbot one to complete than I have the "malware analysis badge"Solved141Views2likes11CommentsICSE / Wireshark final exercice : how to rebuilt the Pdf?
Hi everyone, in the last exercise, I managed to rebuilt the pdf file and it is perfectly readable, however the md5 hash generated from it keeps on been wrong. Is there anything special to consider when rebuilding the file? My method for rebuilting it was to remove top an bottom part that are obviously not part of the pdf, and also the newline character at the end of the last line, then concatenate everything together with a cat command. Thanks in advance for any hint.32Views0likes5CommentsActive Directory Basics: Demonstrate Your Skills
Hey team, i am working on the lab in the title and quite sure there's an issue with the answer for one of the questions. 12. What is the full name of the user on COMP-SIREN that begins with L? I am pretty sure it is Larry Young as you can see from the screenshot. Could i check whether there is an error with the question? Or am i missing somethingSolved52Views0likes3CommentsFIN7 Threat Hunting with Splunk: Ep.3 – Execution Logs
I am pulling my hair with this last question Rebuild the PowerShell script from the previous question using the three parts found in the PowerShell operational logs. What is the MD5 hash of this file? (The file should not contain any trailing white space or return characters) I ran index=* (EventCode=4104) | search "stager.ps1" AND "scriptblock" | table _raw and added the script content of files (1 of 3) (2 of 3) (3 of 3) to a new file. I removed the spaces and made sure they are glued together. I pasted the file in cyber chef with md5 selected and I keep getting the wrong hash. See a sample of the beginning and end of the 3 files This is just a sample below. I really don't know what else to do with this. $EncodedCompressedFile = @' 7b1pk+LKcjD83RH3P5y4cT/Y0ddusfXAfcMRT5U2JJCgBBJIDn8AAQIklmmgBfz6N7O00sCcnuuxH9vPUcRMo1qycqvMrFItfxmsgu3keHqf//avv/2fP//pH/5NiiJts9+9H//xz+H8fTuPatV/mUXRn//p u3rgE9+I/KPY62u+qTQuvp0Xqu3KPkEovj/867/++Z/+9A9/+oe/jFZbY7757V9/w1+96fpvf3NW78fTJCJRtPP/UfjrvxmT4/Lf//Y3Y3L+x79ML8f54V+6821wXP5VOFcEQfgn+FuDv/CnLnCY/za4HI7zzb9Yp+1xtZn/i7Y9zt93+8H8/WPlQ3Vj8n5YTiKAKe72lxToX4W/prj89aaVHEuOm/g+nxznwyX8mQFuRR38ja3//w== '@ $Decoded = [System.Convert]::FromBase64String($EncodedCompressedFile) $MemStream = New-Object System.IO.MemoryStream $MemStream.Write($Decoded, 0, $Decoded.Length) $MemStream.Seek(0,0) | Out-Null $CompressedStream = New-Object System.IO.Compression.DeflateStream($MemStream, [System.IO.Compression.CompressionMode]::Decompress) $StreamReader = New-Object System.IO.StreamReader($CompressedStream) $Output = $StreamReader.readtoend() $Output | IEXSolved50Views0likes1CommentCVE-2024-5910 (Palo Alto Expedition) – Defensive
Hello - I'm a bit stuck on CVE-2024-5910 (Palo Alto Expedition) – Defensive I cannot see an obvious answer to After attempting to reset the admin credentials, which endpoint did the attacker attempt to connect to next? any tips on how to complete? I'll do the offensive one now just in case that gives me something to pivot off. thanks - gusSolved177Views0likes4CommentsS3: Demonstrate Your Skills
I have completed all 10 questions except question 6. 6. Access control Create an access point (AP) called metrolio-dev-ap attached to the metrolio-data-467e6352 bucket. This should allow developers working in the dev vpc vpc-08333ea4fc7562479 using the role arn:aws:iam::447645673093:role/metrolio-developer to list and get all objects in the bucket. Ensure you follow best practices of blocking public access. NOTE: AWS often faces internal errors – we believe these to be race conditions – when applying policies to new access points. You may need to re-apply the policy to the AP. I have re-applied the Access Point policy several times but still is not detected. I’m not sure if it is my Access Point policy or the AWS Immersivelabs that is at fault. Any help would be greatly appreciated. This is my Access Point Policy: { "Version": "2012-10-17", "Statement": [ { "Effect": "Allow", "Principal": { "AWS": "arn:aws:iam::447645673093:role/metrolio-developer" }, "Action": [ "s3:GetObject", "s3:ListBucket" ], "Resource": [ "arn:aws:s3:eu-west-1:447645673093:accesspoint/metrolio-dev-ap/object/*", "arn:aws:s3:eu-west-1:447645673093:accesspoint/metrolio-dev-ap" ], "Condition": { "StringEquals": { "aws:SourceVpc": "vpc-08333ea4fc7562479" } } } ] } I tried to replicate similar permissions on bucket policy only to be denied by restrictive permission. NOTE: Account ID, Bucket names and few other identifiers do not match between screenshot 1-2 and screenshot 3. The screenshot 3 is from different attempt.Solved73Views1like2CommentsAPT29 Threat Hunting with Splunk: Ep.4 – Clean-up & Reconnaissance
I need help with Q6. Any hint please The attacker launches a PowerScript useful for reconnaissance activities. What is the full file path of the executed script? I searched (EventCode=4103 OR EventCode=4104) combined with powershell.Solved123Views2likes5Comments