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Files can always be changed in a secret way. Can you find the flag? cat.jpg
- 1.Download the image and use
exiftool cat.jpg
. The license field looks suspicious:ExifTool Version Number : 12.16File Name : cat.jpgDirectory : .File Size : 858 KiBFile Modification Date/Time : 2021:03:15 14:24:46-04:00File Access Date/Time : 2021:03:16 15:08:38-04:00File Inode Change Date/Time : 2021:03:16 15:08:32-04:00File Permissions : rw-r--r--File Type : JPEGFile Type Extension : jpgMIME Type : image/jpegJFIF Version : 1.02Resolution Unit : NoneX Resolution : 1Y Resolution : 1Current IPTC Digest : 7a78f3d9cfb1ce42ab5a3aa30573d617Copyright Notice : PicoCTFApplication Record Version : 4XMP Toolkit : Image::ExifTool 10.80License : cGljb0NURnt0aGVfbTN0YWRhdGFfMXNfbW9kaWZpZWR9Rights : PicoCTFImage Width : 2560Image Height : 1598Encoding Process : Baseline DCT, Huffman codingBits Per Sample : 8Color Components : 3Y Cb Cr Sub Sampling : YCbCr4:2:0 (2 2)Image Size : 2560x1598Megapixels : 4.1 - 2.We can decode this string using CyberChef. Paste in the string and drag in the magic block into the recipe.
picoCTF{the_m3tadata_1s_modified}
Last modified 1yr ago