Grammar Nazi
The flag is in format dctf{7_4_2_3_7_4} where numbers represent number of characters between underscores. For clarification: you will get the whole flag as a result, including the dctf{} part. Files cfg.zip What’s going on? We have cfg.zip, which contains 2134 folders. An example of the structure is shown below: Image not found! Some folders contain only subfolders. Subfolders name is not random: subfolders have the same name of a folder from the upper layer. Some folders contain only <letter>.txt files. Some folders contain both txt files and subfolders. Between challenge tags, we saw context-free-grammar. In order to make the solution more understandable, we briefly introduce what a context free grammar is. ...