# Blob
![Bi0s](https://github.com/a3X3k/Bi0s/blob/master/CTFs/RITSEC21/Assets/5.png?raw=true)
- Clone the Repository http://git.ritsec.club:7000/blob.git/- From the challenge name we shall understand that this challenge is related to `blob`.- Blob is an abbreviation for `Binary large object`.- A `blob` in `Git` will contain the same exact data as a file.- It's just that a blob is stored in the Git object database, and a file is stored on the filesystem. - A “blob” is used to store file data- it is generally a file.- If we take a look at our .git directory we can see that the .git/objects directory has some subdirectories and files.- So lets navigate to .`git/objects` directory.- It contains a list of all files in our project with a pointer to the blob object assigned to them (this is how git associates your files with their blob objects).- Notice that every directory name is two characters long. - Git generates a 40- character checksum `(SHA-1) hash` for every object and the first two characters of that checksum are used as the directory name and other 38 as a file (object) name.- The first kind of object that git creates when we commit some files are blob objects.-  Let's use the command `git cat-file` to show the contents of the hashed files in `.git/objects`.-  `git cat-file` provides content or type and size information for repository objects.-  The tree object contains one line per file or subdirectory, with each line giving file permissions, object type, object hash, and filename. -  An object type is usually one of `blob` for a file or `tree` for a subdirectory.-  Now use `-p` to view the object contents.-  In our case the third directory `d0` contains the flag. 
![Bi0s](https://github.com/a3X3k/Bi0s/blob/master/CTFs/RITSEC21/Assets/4.png?raw=true)
```Flag --> RS{refs_can_b3_secret_too}```