Tags: python pwn 

Rating: 5.0

using

```
globals().item()
```
we have things we need.

![](http://raw.githubusercontent.com/nghiadt1098/ctfs-wu/master/ISDTUCTF/1.png)

After that. We can see the ` __file__` is the path to the source file.

Now just read that file.
```
open(__file__).read()
```

![](http://raw.githubusercontent.com/nghiadt1098/ctfs-wu/master/ISDTUCTF/2.png)

The rest are easy.
Just xor the secret with the key.
```
secret = "392a3d3c2b3a22125d58595733031c0c070a043a071a37081d300b1d1f0b09"
secret = secret.decode("hex")
key = "pythonwillhelpyouopenthedoor"
```

` FLAG: ISITDTU{1412_secret_in_my_door}`