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
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 Mirai--39-s Exam Preparation.zip
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 In many versions of this challenge, the flag
to look for non-standard ZIP headers or hidden "garbage" data at the end of the file (EOF). 5. Conclusion & Flag Recovery John the Ripper fcrackzip -u -D -p rockyou
: Recover the hidden flag/information within the provided ZIP archive. 1. Initial File Analysis
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