can reveal if there are multiple files concatenated or hidden data appended to the end of the ZIP. 2. ZIP Password Recovery
This write-up covers the analysis and solution for the forensics challenge involving the file "Mirai--39-s Exam Preparation.zip" (commonly appearing as "Mirai's Exam Preparation.zip"). Challenge Overview Mirai--39-s Exam Preparation.zip : Forensics / Steganography Mirai--39-s Exam Preparation.zip
In many versions of this challenge, the flag is hidden in one of two ways: Inside a hidden file : A file named or similar that isn't visible in standard file explorers. String Concatenation : The flag is split across multiple files' metadata. Flag Format Example flagm1r4i_p4ssed_th3_3x4m can reveal if there are multiple files concatenated
The first step in any forensics challenge is to examine the file type and structure. File Check : Using the command confirms it is a standard ZIP archive. Listing Contents to view the contents. Typically, this challenge contains multiple files, such as exam_notes.txt , or other school-related documents. Integrity Check zipdetails -v Challenge Overview Mirai--39-s Exam Preparation
to look for non-standard ZIP headers or hidden "garbage" data at the end of the file (EOF). 5. Conclusion & Flag Recovery
. Look for "Artist," "Comments," or "Description" tags that might contain the flag or a hint. Hidden Data (Steghide) : If an image like is present, check for hidden data using: steghide extract -sf mirai.png Use code with caution. Copied to clipboard