Python

Challenge description you can run anything on this! please dont hack me Source code blacklist = "._0x/|?*[]{}<>\"'=()\\\t " blacklist2 = ['eval', 'exec', 'compile', 'import', 'os', 'sys', 'cat', 'ls', 'exit', 'list', 'max', 'min', 'set', 'tuple'] def validate(code): for char in blacklist: if char in str(code): return False for word in blacklist2: if word in str(code): return False return True if __name__ == '__main__': print("------------------------------") print("Welcome to my very cool python interpreter! \nI hope I blacklisted enough....

Source code ez-class.py First analysis It seems we can write a class to a file, and open that class. But we also have restrictions on what we can write that are applied when input gets validated by get_legal_code. When running and selecting 1. Write new class we are prompted with {class name} {parent} {number of methods} for each method: {name{i}} {params{i}} {body{i}} and out class will look like: class {class name}({parent}): def {name{1}}({params{1}}): {body{1}} def {name{2}}({params{2}}): {body{2}} ....

Someone who doesn’t care about bandwidth usage decided to package both the server and client binaries in a single file… The server of course is meant to run on linux, and the client on Windows. We get a PowerShell file eulers_license.ps1 that contains: a binary_linux var containing the server code encoded in base64. a binary_win var containing the client code also encoded in base64. The linux binary The linux binary is very easy to reverse....