## Obliterated Again
Description:

I realized that the previous command had a mistake. It should be right this time...?

```bash
$ git filter-branch --index-filter "git rm -f --ignore-unmatch *flag" --prune-empty -- --all
$ git reflog expire --expire=now --all
$ git gc --aggressive --prune=now
```

Using `git log` and `git show` didn't find anything

I google about "git restore after git filter-branch", I found something in [this link](https://stackoverflow.com/questions/14542326/undo-git-filter-branch)

After running `git reset --hard refs/original/refs/heads/master` command, we get the flag back!
```bash
root@2Real:~/Downloads/TSGCTF/Obliterated_again/easy_web# git reset --hard refs/original/refs/heads/master
HEAD is now at 1c80e25 enable production mode
root@2Real:~/Downloads/TSGCTF/Obliterated_again/easy_web# ls
problem README.md
root@2Real:~/Downloads/TSGCTF/Obliterated_again/easy_web# cd problem/
root@2Real:~/Downloads/TSGCTF/Obliterated_again/easy_web/problem# ls
data.db flag lib main.cr README.md shard.lock shard.yml src
```
Using the same script:
```python
import zlib
f = open('easy_web/problem/flag')
print zlib.decompress(f.read())
```

## Flag
> TSGCTF{$_git_update-ref_-d_refs/original/refs/heads/master_S0rry_f0r_m4king_4_m1st4k3_0n_th1s_pr0bl3m}

Original writeup (https://github.com/Hong5489/TSGCTF2019/tree/master/Obliterated_again).