62 lines
2.4 KiB
Markdown
62 lines
2.4 KiB
Markdown
|
## Exif
|
||
|
|
The main idea finding the flag is to have Exiftool.
|
||
|
|
|
||
|
|
#### Step-1:
|
||
|
|
After I downloaded `Computer-Password-Security-Hacker - Copy.jpg`, I immediately tried to open it using Exiftool.
|
||
|
|
|
||
|
|
<img src="Computer-Password-Security-Hacker - Copy.jpg">
|
||
|
|
|
||
|
|
#### Step-2:
|
||
|
|
If you have some experience in CTF before, [Exiftool](https://exiftool.org/) is quite widely used. So I input `exiftool Computer-Password-Security-Hacker\ -\ Copy.jpg`
|
||
|
|
|
||
|
|
Output:
|
||
|
|
|
||
|
|
```bash
|
||
|
|
ExifTool Version Number : 11.88
|
||
|
|
File Name : Computer-Password-Security-Hacker - Copy.jpg
|
||
|
|
Directory : .
|
||
|
|
File Size : 54 kB
|
||
|
|
File Modification Date/Time : 2020:07:31 14:04:06+05:30
|
||
|
|
File Access Date/Time : 2020:07:31 14:04:06+05:30
|
||
|
|
File Inode Change Date/Time : 2020:07:31 14:04:06+05:30
|
||
|
|
File Permissions : rw-r--r--
|
||
|
|
File Type : JPEG
|
||
|
|
File Type Extension : jpg
|
||
|
|
MIME Type : image/jpeg
|
||
|
|
JFIF Version : 1.02
|
||
|
|
X Resolution : 100
|
||
|
|
Y Resolution : 100
|
||
|
|
Exif Byte Order : Big-endian (Motorola, MM)
|
||
|
|
Resolution Unit : None
|
||
|
|
Y Cb Cr Positioning : Centered
|
||
|
|
Exif Version : 0231
|
||
|
|
Components Configuration : Y, Cb, Cr, -
|
||
|
|
Flashpix Version : 0100
|
||
|
|
Owner Name : flag{3l1t3_3x1f_4uth0r1ty_dud3br0}
|
||
|
|
GPS Latitude Ref : South
|
||
|
|
GPS Longitude Ref : East
|
||
|
|
Quality : 60%
|
||
|
|
DCT Encode Version : 100
|
||
|
|
APP14 Flags 0 : [14], Encoded with Blend=1 downsampling
|
||
|
|
APP14 Flags 1 : (none)
|
||
|
|
Color Transform : YCbCr
|
||
|
|
Image Width : 660
|
||
|
|
Image Height : 371
|
||
|
|
Encoding Process : Baseline DCT, Huffman coding
|
||
|
|
Bits Per Sample : 8
|
||
|
|
Color Components : 3
|
||
|
|
Y Cb Cr Sub Sampling : YCbCr4:4:4 (1 1)
|
||
|
|
Image Size : 660x371
|
||
|
|
Megapixels : 0.245
|
||
|
|
GPS Latitude : 77 deg 17' 2.62" S
|
||
|
|
GPS Longitude : 44 deg 4' 7.30" E
|
||
|
|
GPS Position : 77 deg 17' 2.62" S, 44 deg 4' 7.30" E
|
||
|
|
```
|
||
|
|
|
||
|
|
#### Step-3:
|
||
|
|
|
||
|
|
Voila! I got the flag there. I don't have any idea why this challenge was in hard.
|
||
|
|
|
||
|
|
#### Step-5:
|
||
|
|
Finally the flag becomes:
|
||
|
|
`flag{3l1t3_3x1f_4uth0r1ty_dud3br0}`
|