异性相吸 1.xor 2.hex2binary 3.len(bin(miwen))==len(bin(mingwen)) # -*- coding:utf-8 -*- file_de = open('decode1.txt') file_en = open('ene.txt') de = file_de.read() en = file_en.read() s = '' for i, j in zip(de, en): s += chr(ord(i) ^ ord(j)) print s file…
Hello,RE! 提示 IDA 中按 R . Google 到 IDA 中 R 快捷键是 Character ,转为字符串. 丢进 IDA(虽然我并不会使用 IDA 有个 strcmp 函数,比较 v4 和 v5 地址的.选中 v5 ,发现倒序的 flag 字样. 得到 Flag 为 flag{Welcome_To_RE_World!} ReadAsm2 main函数部分: int main(int argc, char const *argv[]) { char input[] = {0x0…
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Crypto CTF 2019 writeup roXen 题目 roXen Relationship with a cryptographer! The Girlfriend: All you ever care about is crypto! I am sick of it! It's me or crypto! The Cryptographer boyfriend: You meant to say it's you XOR cryptography. The Girlfriend:…