iOS逆向-SSH远程登录手机

iPhone越狱后通过cydia安装OpenSSH

连接手机

使用WiFi连接手机
ssh 用户名@手机IP地址
$ssh root@192.168.1.2

默认密码: alpine

iOS 下有两个用户 :root 和 mobile
root: 最高权限,可以访问任意文件
mobile: 普通用户,只能访问用户目录下的文件/var/mobile

修改账户登录密码

root 用户可以修改所有用户的密码
passwd 命令修改密码
$passwd 用户名
输入两次新密码,确认修改,因为是登录状态所以不用输入原始密码

SSH 其它操作

删除保存的服务器地址的key

ssh-keygen -R 服务器 IP 地址( 当 SSH 登录手机, 手机就是服务器)

know_hosts 文件: 用于保存 SSH 登录服务器所接受的 key
在系统 ~/.ssh 目录中保存
ssh_host_rsa_key.pub 文件: 作为 ssh 服务器发送给连接者的key
在系统 /etc/ssh 目录中保存

~/.ssh  $ ls -l /etc/ssh 
total 176
-rw-r--r--  1 root  wheel  565252 12 14  2019 moduli
-rw-r--r--  1 root  wheel    1522 12 14  2019 ssh_config
-rw-------  1 root  wheel     965  2  2  2015 ssh_host_key
-rw-r--r--  1 root  wheel     630  2  2  2015 ssh_host_key.pub
-rw-------  1 root  wheel    1679  2  2  2015 ssh_host_rsa_key

-rw-r--r--  1 root  wheel     382  2  2  2015 ssh_host_rsa_key.pub
...

免密码登录

免密码登录也称"公钥登录",原理就是用户将自己的公钥存在远程主机上,登录的时候远程主机会向用户发送一段随机字符串,用户用自己的私钥加密后,再发回来,远程主机用事先的公钥进行解密,如果成功,就证明用户是可信的,直接允许登录,不再要求密码
客户端用 ssh-keygen 命令在 ~/ssh/ 目录下生成公钥
$ssh-keygen
用 ssh-copy-id 将公钥发送给ssh服务器
$ssh-copy-id root@192.168.1.2

注意: 如果配置了之后,还需要输入密码,需要给 authorized_keys 上一个777权限

使用 config 文件来用ssh 别名登录

在 ~/.ssh 目录下创建一个 config 文件, 内部可以配置ssh 登录的别名
Host 别名
Hostname IP地址
User 用户名
Port 端口号

Host 5s
HostName 192.168.1.2
User root
Port 22

USB登录

苹果有一个服务,叫 usbmuxd, 这个服务主要用于在USB协议上实现多路TCP连接.
所在路径
/Library/Apple/System/Library/PrivateFrameworks/MobileDevice.framework/Versions/A/Resources/usbmuxd

先用 python 脚本做端口映射
$python tcprelay.py -t 22:12345
再通过 USB 进行 SSH 连接
$ssh -p 12345 root@localhost

另外一个端口映射方法
安装 libimobiledevice 工具
$brew install libimobiledevice
映射端口
$iproxy 12345 22

脚本文件:
tcpreplay.py

#!/usr/bin/python
# -*- coding: utf-8 -*-
#
#   tcprelay.py - TCP connection relay for usbmuxd
#
# Copyright (C) 2009    Hector Martin "marcan" <hector@marcansoft.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 or version 3.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

import usbmux
import SocketServer
import select
from optparse import OptionParser
import sys
import threading

class SocketRelay(object):
    def __init__(self, a, b, maxbuf=65535):
        self.a = a
        self.b = b
        self.atob = ""
        self.btoa = ""
        self.maxbuf = maxbuf
    def handle(self):
        while True:
            rlist = []
            wlist = []
            xlist = [self.a, self.b]
            if self.atob:
                wlist.append(self.b)
            if self.btoa:
                wlist.append(self.a)
            if len(self.atob) < self.maxbuf:
                rlist.append(self.a)
            if len(self.btoa) < self.maxbuf:
                rlist.append(self.b)
            rlo, wlo, xlo = select.select(rlist, wlist, xlist)
            if xlo:
                return
            if self.a in wlo:
                n = self.a.send(self.btoa)
                self.btoa = self.btoa[n:]
            if self.b in wlo:
                n = self.b.send(self.atob)
                self.atob = self.atob[n:]
            if self.a in rlo:
                s = self.a.recv(self.maxbuf - len(self.atob))
                if not s:
                    return
                self.atob += s
            if self.b in rlo:
                s = self.b.recv(self.maxbuf - len(self.btoa))
                if not s:
                    return
                self.btoa += s
            #print "Relay iter: %8d atob, %8d btoa, lists: %r %r %r"%(len(self.atob), len(self.btoa), rlo, wlo, xlo)

class TCPRelay(SocketServer.BaseRequestHandler):
    def handle(self):
        print "Incoming connection to %d"%self.server.server_address[1]
        mux = usbmux.USBMux(options.sockpath)
        print "Waiting for devices..."
        if not mux.devices:
            mux.process(1.0)
        if not mux.devices:
            print "No device found"
            self.request.close()
            return
        dev = mux.devices[0]
        print "Connecting to device %s"%str(dev)
        dsock = mux.connect(dev, self.server.rport)
        lsock = self.request
        print "Connection established, relaying data"
        try:
            fwd = SocketRelay(dsock, lsock, self.server.bufsize * 1024)
            fwd.handle()
        finally:
            dsock.close()
            lsock.close()
        print "Connection closed"

class TCPServer(SocketServer.TCPServer):
    allow_reuse_address = True

class ThreadedTCPServer(SocketServer.ThreadingMixIn, TCPServer):
    pass

HOST = "localhost"

parser = OptionParser(usage="usage: %prog [OPTIONS] RemotePort[:LocalPort] [RemotePort[:LocalPort]]...")
parser.add_option("-t", "--threaded", dest='threaded', action='store_true', default=False, help="use threading to handle multiple connections at once")
parser.add_option("-b", "--bufsize", dest='bufsize', action='store', metavar='KILOBYTES', type='int', default=128, help="specify buffer size for socket forwarding")
parser.add_option("-s", "--socket", dest='sockpath', action='store', metavar='PATH', type='str', default=None, help="specify the path of the usbmuxd socket")

options, args = parser.parse_args()

serverclass = TCPServer
if options.threaded:
    serverclass = ThreadedTCPServer

if len(args) == 0:
    parser.print_help()
    sys.exit(1)

ports = []

for arg in args:
    try:
        if ':' in arg:
            rport, lport = arg.split(":")
            rport = int(rport)
            lport = int(lport)
            ports.append((rport, lport))
        else:
            ports.append((int(arg), int(arg)))
    except:
        parser.print_help()
        sys.exit(1)

servers=[]

for rport, lport in ports:
    print "Forwarding local port %d to remote port %d"%(lport, rport)
    server = serverclass((HOST, lport), TCPRelay)
    server.rport = rport
    server.bufsize = options.bufsize
    servers.append(server)

alive = True

while alive:
    try:
        rl, wl, xl = select.select(servers, [], [])
        for server in rl:
            server.handle_request()
    except:
        alive = False

usbmux.py

#!/usr/bin/python
# -*- coding: utf-8 -*-
#
#   usbmux.py - usbmux client library for Python
#
# Copyright (C) 2009    Hector Martin "marcan" <hector@marcansoft.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 or version 3.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

import socket, struct, select, sys

try:
    import plistlib
    haveplist = True
except:
    haveplist = False

class MuxError(Exception):
    pass

class MuxVersionError(MuxError):
    pass

class SafeStreamSocket:
    def __init__(self, address, family):
        self.sock = socket.socket(family, socket.SOCK_STREAM)
        self.sock.connect(address)
    def send(self, msg):
        totalsent = 0
        while totalsent < len(msg):
            sent = self.sock.send(msg[totalsent:])
            if sent == 0:
                raise MuxError("socket connection broken")
            totalsent = totalsent + sent
    def recv(self, size):
        msg = ''
        while len(msg) < size:
            chunk = self.sock.recv(size-len(msg))
            if chunk == '':
                raise MuxError("socket connection broken")
            msg = msg + chunk
        return msg

class MuxDevice(object):
    def __init__(self, devid, usbprod, serial, location):
        self.devid = devid
        self.usbprod = usbprod
        self.serial = serial
        self.location = location
    def __str__(self):
        return "<MuxDevice: ID %d ProdID 0x%04x Serial '%s' Location 0x%x>"%(self.devid, self.usbprod, self.serial, self.location)

class BinaryProtocol(object):
    TYPE_RESULT = 1
    TYPE_CONNECT = 2
    TYPE_LISTEN = 3
    TYPE_DEVICE_ADD = 4
    TYPE_DEVICE_REMOVE = 5
    VERSION = 0
    def __init__(self, socket):
        self.socket = socket
        self.connected = False

    def _pack(self, req, payload):
        if req == self.TYPE_CONNECT:
            return struct.pack("IH", payload['DeviceID'], payload['PortNumber']) + "\x00\x00"
        elif req == self.TYPE_LISTEN:
            return ""
        else:
            raise ValueError("Invalid outgoing request type %d"%req)
    
    def _unpack(self, resp, payload):
        if resp == self.TYPE_RESULT:
            return {'Number':struct.unpack("I", payload)[0]}
        elif resp == self.TYPE_DEVICE_ADD:
            devid, usbpid, serial, pad, location = struct.unpack("IH256sHI", payload)
            serial = serial.split("\0")[0]
            return {'DeviceID': devid, 'Properties': {'LocationID': location, 'SerialNumber': serial, 'ProductID': usbpid}}
        elif resp == self.TYPE_DEVICE_REMOVE:
            devid = struct.unpack("I", payload)[0]
            return {'DeviceID': devid}
        else:
            raise MuxError("Invalid incoming request type %d"%req)

    def sendpacket(self, req, tag, payload={}):
        payload = self._pack(req, payload)
        if self.connected:
            raise MuxError("Mux is connected, cannot issue control packets")
        length = 16 + len(payload)
        data = struct.pack("IIII", length, self.VERSION, req, tag) + payload
        self.socket.send(data)
    def getpacket(self):
        if self.connected:
            raise MuxError("Mux is connected, cannot issue control packets")
        dlen = self.socket.recv(4)
        dlen = struct.unpack("I", dlen)[0]
        body = self.socket.recv(dlen - 4)
        version, resp, tag = struct.unpack("III",body[:0xc])
        if version != self.VERSION:
            raise MuxVersionError("Version mismatch: expected %d, got %d"%(self.VERSION,version))
        payload = self._unpack(resp, body[0xc:])
        return (resp, tag, payload)

class PlistProtocol(BinaryProtocol):
    TYPE_RESULT = "Result"
    TYPE_CONNECT = "Connect"
    TYPE_LISTEN = "Listen"
    TYPE_DEVICE_ADD = "Attached"
    TYPE_DEVICE_REMOVE = "Detached" #???
    TYPE_PLIST = 8
    VERSION = 1
    def __init__(self, socket):
        if not haveplist:
            raise Exception("You need the plistlib module")
        BinaryProtocol.__init__(self, socket)
    
    def _pack(self, req, payload):
        return payload
    
    def _unpack(self, resp, payload):
        return payload
    
    def sendpacket(self, req, tag, payload={}):
        payload['ClientVersionString'] = 'usbmux.py by marcan'
        if isinstance(req, int):
            req = [self.TYPE_CONNECT, self.TYPE_LISTEN][req-2]
        payload['MessageType'] = req
        payload['ProgName'] = 'tcprelay'
        BinaryProtocol.sendpacket(self, self.TYPE_PLIST, tag, plistlib.writePlistToString(payload))
    def getpacket(self):
        resp, tag, payload = BinaryProtocol.getpacket(self)
        if resp != self.TYPE_PLIST:
            raise MuxError("Received non-plist type %d"%resp)
        payload = plistlib.readPlistFromString(payload)
        return payload['MessageType'], tag, payload

class MuxConnection(object):
    def __init__(self, socketpath, protoclass):
        self.socketpath = socketpath
        if sys.platform in ['win32', 'cygwin']:
            family = socket.AF_INET
            address = ('127.0.0.1', 27015)
        else:
            family = socket.AF_UNIX
            address = self.socketpath
        self.socket = SafeStreamSocket(address, family)
        self.proto = protoclass(self.socket)
        self.pkttag = 1
        self.devices = []

    def _getreply(self):
        while True:
            resp, tag, data = self.proto.getpacket()
            if resp == self.proto.TYPE_RESULT:
                return tag, data
            else:
                raise MuxError("Invalid packet type received: %d"%resp)
    def _processpacket(self):
        resp, tag, data = self.proto.getpacket()
        if resp == self.proto.TYPE_DEVICE_ADD:
            self.devices.append(MuxDevice(data['DeviceID'], data['Properties']['ProductID'], data['Properties']['SerialNumber'], data['Properties']['LocationID']))
        elif resp == self.proto.TYPE_DEVICE_REMOVE:
            for dev in self.devices:
                if dev.devid == data['DeviceID']:
                    self.devices.remove(dev)
        elif resp == self.proto.TYPE_RESULT:
            raise MuxError("Unexpected result: %d"%resp)
        else:
            raise MuxError("Invalid packet type received: %d"%resp)
    def _exchange(self, req, payload={}):
        mytag = self.pkttag
        self.pkttag += 1
        self.proto.sendpacket(req, mytag, payload)
        recvtag, data = self._getreply()
        if recvtag != mytag:
            raise MuxError("Reply tag mismatch: expected %d, got %d"%(mytag, recvtag))
        return data['Number']

    def listen(self):
        ret = self._exchange(self.proto.TYPE_LISTEN)
        if ret != 0:
            raise MuxError("Listen failed: error %d"%ret)
    def process(self, timeout=None):
        if self.proto.connected:
            raise MuxError("Socket is connected, cannot process listener events")
        rlo, wlo, xlo = select.select([self.socket.sock], [], [self.socket.sock], timeout)
        if xlo:
            self.socket.sock.close()
            raise MuxError("Exception in listener socket")
        if rlo:
            self._processpacket()
    def connect(self, device, port):
        ret = self._exchange(self.proto.TYPE_CONNECT, {'DeviceID':device.devid, 'PortNumber':((port<<8) & 0xFF00) | (port>>8)})
        if ret != 0:
            raise MuxError("Connect failed: error %d"%ret)
        self.proto.connected = True
        return self.socket.sock
    def close(self):
        self.socket.sock.close()

class USBMux(object):
    def __init__(self, socketpath=None):
        if socketpath is None:
            if sys.platform == 'darwin':
                socketpath = "/var/run/usbmuxd"
            else:
                socketpath = "/var/run/usbmuxd"
        self.socketpath = socketpath
        self.listener = MuxConnection(socketpath, BinaryProtocol)
        try:
            self.listener.listen()
            self.version = 0
            self.protoclass = BinaryProtocol
        except MuxVersionError:
            self.listener = MuxConnection(socketpath, PlistProtocol)
            self.listener.listen()
            self.protoclass = PlistProtocol
            self.version = 1
        self.devices = self.listener.devices
    def process(self, timeout=None):
        self.listener.process(timeout)
    def connect(self, device, port):
        connector = MuxConnection(self.socketpath, self.protoclass)
        return connector.connect(device, port)

if __name__ == "__main__":
    mux = USBMux()
    print "Waiting for devices..."
    if not mux.devices:
        mux.process(0.1)
    while True:
        print "Devices:"
        for dev in mux.devices:
            print dev
        mux.process()
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