Pho Is Tasty!
The flag is hidden in the jpeg file. Good Luck! Have some Pho! Solve this challenge before solving my Scope challenge for 100 points. Pho.jpg
Before doing anything else let's use the exiftool utility to check the image metadata.
$ exiftool 971
ExifTool Version Number : 12.40
File Name : 971
Directory : .
File Size : 64 KiB
File Modification Date/Time : 2020:07:21 09:06:47+05:30
File Access Date/Time : 2023:10:06 10:21:02+05:30
File Inode Change Date/Time : 2023:10:06 10:20:24+05:30
File Permissions : -rw-r--r--
File Type : JPEG
File Type Extension : jpg
MIME Type : image/jpeg
JFIF Version : 1.01
Resolution Unit : None
X Resolution : 1
Y Resolution : 1
Image Width : 595
Image Height : 661
Encoding Process : Progressive DCT, Huffman coding
Bits Per Sample : 8
Color Components : 3
Y Cb Cr Sub Sampling : YCbCr4:2:0 (2 2)
Image Size : 595x661
Megapixels : 0.393
We can use the xxd utility to look at the hexadecimal dump of the image.
$ xxd 971 | head
00000000: ffd8 ffe0 0010 4a46 4946 0001 0100 0001 ......JFIF......
00000010: 0001 0000 ffe3 006f 5361 6d73 756e 6700 .......oSamsung.
00000020: 5361 6d73 756e 6720 4761 6c61 7879 2053 Samsung Galaxy S
00000030: 3820 436f 6c6f 7220 5061 6c65 7474 653a 8 Color Palette:
00000040: 1d09 4304 1554 0206 4614 0d6c 160e 6506 ..C..T..F..l..e.
00000050: 1961 171f 721b 186e 010c 7b04 0749 0f03 .a..r..n..{..I..
00000060: 5f02 0e4c 1618 6f1f 0476 190c 651f 065f _..L..o..v..e.._
00000070: 1801 5011 1068 1314 6f1a 0221 0402 2113 ..P..h..o..!..!.
00000080: 1421 0b14 7dff db00 8400 0808 0808 0808 .!..}...........
00000090: 090a 0a09 0c0d 0c0d 0c12 100f 0f10 121b ................
Flag
CTFlearn{I_Love_Pho!!!}