[https://rls1004.github.io/2018-07-29-isitdtu-writeup-xoxopwn/](https://rls1004.github.io/2018-07-29-isitdtu-writeup-xoxopwn/)
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use `co_code` and `co_consts`.
```shThis is function x()>>> o.func_code.co_coded}|jd}d}d}xLtt|D]8}|tt||t||t|A7}q4W||krdGHndGHdS```
```shThis is function x()>>> o.func_code.co_consts(None, '392a3d3c2b3a22125d58595733031c0c070a043a071a37081d300b1d1f0b09', 'hex', 'pythonwillhelpyouopenthedoor', '', 'Open the door', 'Close the door')```
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code and flag```pythona = '392a3d3c2b3a22125d58595733031c0c070a043a071a37081d300b1d1f0b09'b = 'pythonwillhelpyouopenthedoor'b += b[:len(a)/2-len(b)]
a = int(a,16)b = int(b.encode('hex'),16)
result = hex(a^b)[2:-1].decode('hex')
print result``````ISITDTU{1412_secret_in_my_door}```