This one will need a bit of explaining...
You already are given the flag files flag1.txt and flag2.txt corresponding to the 2 levels of the challenge : jail1.py and jail2.py.
The task now in level 1 is to be able to get the contents of flag1.txt while executing jail1.py. On running jail1.py by executing python3 jail1.py
or python jail1.py (whichever works), the program prompts for an input and calls
eval on the passed input. Is calling eval safe here? And if not, how can
you use it to solve the challenge?
Level 2 is completely similar except the fact that it implements a blacklist on the strings allowed in the input. So, you may need to modify your
solution from level 1 to read flag2.txt.
Create files ans1.txt and ans2.txt with the corresponding inputs to the programs that print the flag.