Mirai--39-s Exam Preparation.zip Apr 2026

: Recover the hidden flag/information within the provided ZIP archive. 1. Initial File Analysis

to look for non-standard ZIP headers or hidden "garbage" data at the end of the file (EOF). 5. Conclusion & Flag Recovery

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 Mirai--39-s Exam Preparation.zip

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

can reveal if there are multiple files concatenated or hidden data appended to the end of the ZIP. 2. ZIP Password Recovery : Recover the hidden flag/information within the provided

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

: The password is often related to "Mirai" or a simple common password found in the 3. Deep Dive into Extracted Files Once extracted, focus on the individual files: Metadata Analysis : Check the EXIF data of any images using Listing Contents to view the contents

If the ZIP file is encrypted (which is common for this specific challenge), you will need to crack the password. John the Ripper fcrackzip -u -D -p rockyou.txt Mirai-- -s\ Exam\ Preparation.zip Use code with caution. Copied to clipboard Expected Result

. 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

If prompted for a passphrase, try the ZIP password or strings found in the text files. 4. Hex/Strings Analysis Search for the flag format (e.g., ) within the binary data. strings Mirai-- -s\ Exam\ Preparation.zip | grep Use code with caution. Copied to clipboard