需要和Oracle交互的密码学脚本一般都需要借助pwn库的帮助，今天切换了python版本后，出现了一个异常（OSError: Int or String expected，详细异常见文章），查阅一下源码后简单的解决了这个问题，在此分享一下。

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问题环境与描述

• SageMath 10.1
• Python 3.11.1
• pwntools 4.11.1

关键代码：

from pwn import *process = remote('127.0.0.1', 7777)

报错：

File ~/.sage/local/lib/python3.11/site-packages/pwnlib/tubes/remote.py:77, in remote.__init__(self, host, port, fam, typ, ssl, sock, ssl_context, ssl_args, sni, *args, **kwargs)75 fam = self._get_family(fam)76 try:
---> 77     self.sock   = self._connect(fam, typ)78 except socket.gaierror as e:79     if e.errno != socket.EAI_NONAME:File ~/.sage/local/lib/python3.11/site-packages/pwnlib/tubes/remote.py:103, in remote._connect(self, fam, typ)100 timeout = self.timeout102 with self.waitfor('Opening connection to %s on port %s' % (self.rhost, self.rport)) as h:
--> 103     for res in socket.getaddrinfo(self.rhost, self.rport, fam, typ, 0, socket.AI_PASSIVE):104         self.family, self.type, self.proto, _canonname, sockaddr = res106         if self.type not in [socket.SOCK_STREAM, socket.SOCK_DGRAM]:File /private/var/tmp/sage-10.1-current/local/var/lib/sage/venv-python3.11.1/lib/python3.11/socket.py:962, in getaddrinfo(host, port, family, type, proto, flags)959 # We override this function since we want to translate the numeric family960 # and socket type values to enum constants.961 addrlist = []
--> 962 for res in _socket.getaddrinfo(host, port, family, type, proto, flags):963     af, socktype, proto, canonname, sa = res964     addrlist.append((_intenum_converter(af, AddressFamily),965                      _intenum_converter(socktype, SocketKind),966                      proto, canonname, sa))OSError: Int or String expected

解决方案

报错是因为Sage把数字转成Long int类型了，而pwntools需要的是Int或者String类型的，只需要在代码里对数字进行显示的强转即可。

解决代码如下：

from pwn import *process = remote('127.0.0.1',int(7777))

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ATFWUS 2024-01-08