从流量包到Flag：一次CTF Misc挑战中的Python加密流量逆向实战

1. 初识CTF流量分析题第一次接触CTF Misc类题目时面对pcap流量包总有种无从下手的感觉。记得那次攻防世界的比赛题目给了一个名为xxx.pcap的文件打开Wireshark一看满屏的TCP和HTTP流量让人眼花缭乱。当时我尝试用http.request.methodPOST过滤结果一无所获这才意识到事情没那么简单。在反复翻看数据包时我注意到编号60的TCP流中藏着一串Python代码。右键选择追踪TCP流后一段完整的加密脚本赫然出现在眼前。这段代码使用了rot13、base64和凯撒密码三种加密方式通过随机选择对flag进行多层加密。最让我头疼的是加密次数cnt是个未知数这给逆向解密带来了巨大挑战。2. 逆向分析加密逻辑仔细研究加密脚本后我发现加密过程有几个关键点初始加密flag先经过一次base64编码并在开头拼接字符2多层加密随后进行cnt次随机加密每次加密前会在密文前添加加密方式编号加密方式1代表rot132代表base643代表凯撒密码解密思路应该是逆向操作提取密文首字符确定加密方式对剩余部分进行对应解密重复上述步骤直到完成所有层解密但问题来了加密次数cnt是多少通过分析官方wp和流量包编号我推测初始加密60次随机加密总共61次。这个发现让我兴奋不已但真正的挑战才刚刚开始。3. Python版本差异的坑当我信心满满地运行解密脚本时却发现输出结果纹丝不动。尝试官方wp提供的脚本同样无效。经过反复调试我发现几个关键问题# Python2写法 _rot13 string.maketrans(...) return string.translate(s, _rot13) # Python3需要改为 _rot13 str.maketrans(...) return str.translate(s, _rot13)更隐蔽的问题是base64解码# 需要添加decode(utf-8)将字节转为字符串 pt b64decode(pt[1:]).decode(utf-8)这些版本差异不会报错但会导致脚本无法正常工作。这让我深刻体会到在CTF中环境兼容性往往比算法本身更让人头疼。4. 完整解密脚本解析经过多次调试最终可用的解密脚本如下import string from base64 import b64decode def rot13(s): _rot13 str.maketrans( ABCDEFGHIJKLMabcdefghijklmNOPQRSTUVWXYZnopqrstuvwxyz, NOPQRSTUVWXYZnopqrstuvwxyzABCDEFGHIJKLMabcdefghijklm) return str.translate(s, _rot13) def caesard(plaintext, shift-3): alphabet string.ascii_lowercase shifted_alphabet alphabet[shift:] alphabet[:shift] table str.maketrans(alphabet, shifted_alphabet) return plaintext.translate(table) def decode(pt, cnt61): for _ in range(cnt): c pt[0] if c 1: pt rot13(pt[1:]) elif c 2: pt b64decode(pt[1:]).decode(utf-8) # 关键修正 elif c 3: pt caesard(pt[1:]) print(flag is:, pt) # 原始密文已缩短 encrypted_flag 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