A problem to reverse engineer and find the correct condition. Problem link In this challenge, I have to change the value of con1~con5 in order to pass tests in _start~test4. ; Andrha Pradesh Assembler Challenge for CTFLearn ; This challenge focuses on cmp, je and jne section .data welcome db "Hello CTFlearn Andhra Pradesh Assembler Challenge!",0x0a,0x00 noflag db "Sorry no flag for you :-(",0x0a,0x00 alldone db "All Done!",0x0a,0x00 baddata db "Baad Data!...
A problem to implement a stack machine. Problem here This problem asks to program a stack machine. My Python3 answer is below. The size of stack is unchecked. from collections import deque import sys class StackLang: def __init__(self): self.stack = deque() self.stack.append(0) def run(self, filename): with open(filename, 'r') as file: txt = file.read() for i in txt: if i == '-': self.minus() elif i == '+': self.plus() elif i == '>': self....
A problem that encodes the flag into wave file. Problem here This problem consists of two parts: Obtain the code from wav file Decode Obtain the code from wav file I used dtmf-decoder that extract the tone dialing as decimal. I already have Python3 environment and I don’t want to mess it up. I made a modification of its installation. $ git clone https://github.com/ribt/dtmf-decoder.git $ cd dtmf-decoder/ $ python3 -m pip install -r requirements....