#Exiftool cheat sheet how to#
#Exiftool cheat sheet software#
#Exiftool cheat sheet code#

Odds are the tag that changed is not EXIF but the file system dates, FileModifyDate or FileCreateDate. 'The AllDates only affects three tags, DateTimeOriginal, CreateDate, and ModifyDate.

- Added line for copying photos into organized photos.

- Adding new recursive command to rename JPG to jpg.

#Exiftool cheat sheet how to#

- added line on how to set a date for a particular photo(s).- added line to rename files based on milliseconds.- added command to create comments from a filename.> out.kmlĬreate CSV of Geo Information exiftool -csv -filename -imagesize -gps:GPSLatitude -gps:GPSLongitude. you can use the flag -n to turn all values to numbersĮxiftool -n -r -q -p $DESKTOP/kml-placemark.fmt. I was parsing an iPhoto library where there were thumbnails. I have mine set as a global variableįILECOUNT=$(mdfind -count -onlyin '$DROPBOX_PERSONAL' 'kMDItemKind ='JPEG image'')Įxiftool -q -if '(not $datetimeoriginal or ($datetimeoriginal eq '0000:00:00 00:00:00'))' -csv -common '$n' | sed 1d > '$DROPBOX_PERSONAL/nodates.csv'ĭone 300000' '-Directory 300000' gets files that are over 300kB. Note this can take a long time if you have a lot of jpgs # You'll need to set your Dropbox folder path. #Output photos that don't have datetimeoriginal to a CSV# If the corporate environment is running PHP applications and it's not at the latest version of PHP, then, it's susceptible.Last updated: Searching for Files Find images in a directory that don't have a DateTimeOriginal exiftool -filename -filemodifydate -createdate -r -if '(not $datetimeoriginal) and $filetype eq 'JPEG''. Moreover, even though e ( PREG_REPLACE_EVAL ) was deprecated in PHP 5.5.0 and eventually removed as of PHP 7.0.0, this doesn't mean that the attack is still not prevalent. This is not a new technique but it's important to highlight that because today, for performance reasons, many organizations opt to only scan PHP files and exclude other file types from being scanned, overlooking certain types of file that shouldn't be classified as less important. Their indicators can be derived from published incident reports, forensic analyses or malware sample collections. How not to mention Loki or Thor IOC scanner created by the awesome Nextron Systems, Detection is performed by crawling the filesystem and testing files againsts a set of YARA rules. PHP-malware-finder is a script used to detect obfuscated code, as well as files using PHP functions often used in web shells.

It the script finds that within the entry, it will output the name of the file to the console to alert us that the file is potentially dangerous.Ĭan also be used a tool called PHP Malware Finder available on GitHub. There're many ways, tools and techniques that can be used.Īn example is this script, found on Pastebin that looks for the entries with UserComment, checking for the '/e' PCRE regex modifier. Knowing how it works and appears, how we can hunt it? Notice that the $exif variable data uses the '/.*/e' PCRE regex modifier (PREG_REPLACE_EVAL) which will evaluate the data from the $exif variable. The final setup in this process is to execute the PHP preg_replace function.

#Exiftool cheat sheet code#

The first line downloads the remote jpg image file with the stashes code in it and then sets the $exif variable with the array values. '/.*/e' is known as PCTE regex modifier and it will be evaluate the data from $exif Within the Exif data the are two suspicious entries, 'copyright' and 'document name', that contain respectively :Įval(base64_decode(JF9QT1NUWydwYXNzd29yZCddKTs=')) Now, using a tool called exiftool(-k) a light tool downloadable from here, we can take a look at what it's hiding behind, in its metadata. as a usual JPEG image files.Īs the title suggests, the Exit structure fields can be leveraged by an attacker for hiding malicious scripts.Īt first sight there's nothing suspicious, right?

#Exiftool cheat sheet software#

Indeed, Exif format image files can be seen on Jpeg compliant Internet Browser, Picture viewer/Photo retouch software etc. Exif inserts some of the image/digital camera information data and thumbnail image to JPEG in conformity with JPEG specifications.

The Exif file format is the same as JPEG file format.

Most digital photo software can display EXIF information, but you usually can't edit it. This metadata are called EXIF data, which stands for Exchangeable Image File Format.