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模拟登录封包python实现

发布时间：2020-12-17 17:29:29 所属栏目：Python 来源：网络整理
导读：今天PHP站长网 52php.cn把收集自互联网的代码分享给大家，仅供参考。 #!/usr/bin/env python# encoding:utf-8 from socket import *from ctypes import create_string_bufferfrom struct import *import sysconfigimport

以下代码由PHP站长网 52php.cn收集自互联网

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#!/usr/bin/env python
# encoding:utf-8
 
from socket import  *
from ctypes import create_string_buffer
from struct import *
import sysconfig
import random
from ctypes.wintypes import BYTE
from msilib import datasizemask
from _ctypes import sizeof
from random import randint
from time import sleep
 
CODEC = 'utf-8'
 
global RECVBUFSIZ
global  m_wRecvSize
global  m_cbSendRound #发送字节映射
global  m_cbRecvRound  #接收字节映射
global  m_dwSendXorKey  #发送密钥
global  m_dwRecvXorKey #接收密钥
 
 
m_cbSendRound = 0
m_cbRecvRound = 0
 
RECVBUFSIZ = 16384
m_wRecvSize = 0
m_cbSendRound = 0 #发送字节映射
m_cbRecvRound = 0  #接收字节映射
m_dwSendXorKey = 0  #发送密钥
m_dwRecvXorKey = 0 #接收密钥
 
 
def SendLogonPacket(ADDR,SENDBUFF):
    global RECVBUFSIZ
    cs = socket(AF_INET,SOCK_STREAM)
    cs.connect(ADDR)
    cs.send(SENDBUFF)
    lennum = len( cs.recv(RECVBUFSIZ))
    cs.close()
    return lennum
 
 
def md5(str1):
    import hashlib
    m = hashlib.md5()
    m.update(str1)
    str1 = m.hexdigest()
    return  str1.upper()
def a2u(buff1,str1,start):
    i=0
    for letter in str1:
        pack_into("B",buff1,start+i,ord(letter))
        i += 2
def MapSendByte (byte):
    global m_cbSendRound
    index = byte + m_cbSendRound
    b = g_SendByteMap[index % 0x100]
    m_cbSendRound += 3
    return b
def MapRecvByte (byte):
    global m_cbRecvRound
    b = g_RecvByteMap[byte] - m_cbRecvRound
    b = b % 0x100
    m_cbRecvRound += 3
    return b
def SeedRandMap(wSeed):
    num = int(wSeed)
    num = ( num * 241103 + 2533101 ) >> 16
    return ((num  | int(0xFFFF0000)) -0xFFFF0000) #返回一个WORD类型
 
def CrevasseBuffer(buff,wDataSize):
    global dwXorKey
    global m_dwSendXorKey
    global m_dwRecvXorKey
    i = 0
    while i  < wDataSize:
        print hex(ord (buff[i])),i += 1
    dwXorKey = m_dwRecvXorKey
    if (((wDataSize -4) % 4 ) != 0):
        print "recv data error"
        exit()
    wEncrypCount = (wDataSize - 4) /4
    #解密数据
    i = 0
    j = 4   #排除cmd_info,从CMD_Command起
    k = 4
    while i < (wEncrypCount):
        wSeed =  (unpack_from("H",buff,k)[0])
        k += 2
        dwXorKey = SeedRandMap(wSeed)
        dwXorKey |= int( SeedRandMap(unpack_from ("H",k)[0]) ) << 16
        k += 2
        dwXorKey ^= g_dwPacketKey
        n = unpack_from( "I",j)[0]
        n ^= m_dwRecvXorKey
        pack_into("I",j,n)
        j += 4
        m_dwRecvXorKey = dwXorKey
        i += 1
 
    i = 4
    cbCheckCode = unpack_from('B',1)[0]
    while i < wDataSize:
        pack_into ("B",i,MapRecvByte ( ord ( buff[i] ) ) )
        cbCheckCode += ord(buff[i])
        cbCheckCode = cbCheckCode % 0x100
        i += 1
    if cbCheckCode != 0:
        print ""
        print 'cb',cbCheckCode
    i = 0
    while i  < wDataSize:
        print hex(ord(buff[i])),i += 1
    return wDataSize
 
 
def EncryptBuffer(buff,wDataSize):
    global dwXorKey
    global m_dwSendXorKey
    global m_dwRecvXorKey
    global SENDBUFF
    global m_dwSendPacketCount
    wEncryptSize = wDataSize - 4 #排除cmd_info4字节头不加密
    wSnapCount=0
    if ((wEncryptSize % 4) != 0): #待加密数据对齐粒度 4字节
        wSnapCount = 4 - ( wEncryptSize % 4 )  #不足4字节补-0
        n = 0
        t = wSnapCount
        while n < t:
            pack_into("B",4 + wEncryptSize + n,0x0)
            t += 1
 
    cbCheckCode = 0 #务必置0
    i = 4 #起始位置，排除CMD_INFO逐字节与发送映射表替换，并计算出校验和
    while i < wDataSize:
        #print hex(ord(buff[i]))
        cbCheckCode += ord(buff[i])
        #print cbCheckCode
        cbCheckCode = cbCheckCode % 0x100
        #print cbCheckCode
        t = MapSendByte(ord(buff[i]))
        #print t
        pack_into("B",t)
        i += 1
 
    #填写计算出的校验码
    pack_into ("B",1,( ~cbCheckCode + 1) % 0x100)
 
    dwXorKey = m_dwSendXorKey
    if ( m_dwSendPacketCount == 0 ):
        dwXorKey = random.randint(0x22222111,0xeeeeeeee) #生成随机密钥
 
        dwXorKey = g_dwPacketKey
 
        m_dwSendXorKey = dwXorKey
        m_dwRecvXorKey = dwXorKey
 
 
    #加密数据
    i = 0
    j = 4   #排除cmd_info,从CMD_Command起
    k = 4
    while i < ((wEncryptSize + wSnapCount) / 4):
        n =  (unpack_from("I",j)[0])
        n ^= dwXorKey
        pack_into("I",n)
        j += 4 #逐4字节异或加密数据
        dwXorKey = SeedRandMap ( unpack_from ( "H",k )[0])  #用加密后的数据加密生成新的密钥
        k += 2
        dwXorKey |= int( SeedRandMap( unpack_from ("H",k)[0])) << 16 #
        k += 2
        dwXorKey ^= g_dwPacketKey
        i += 1
 
 
    if (m_dwSendPacketCount == 0):
        i = 0
        while i < 8:
            pack_into("B",SENDBUFF,ord ( buff[i] ) )      #前八个字节相同
            i += 1
        pack_into ( "I",8,m_dwSendXorKey )  #插入异或密钥key
        PacketSize = wDataSize + 4 #因为插入了4B的密钥
        pack_into("H",2,PacketSize)
        j = 8
        while j <  wDataSize:
            pack_into("B",j+4,ord( buff[j] ) )
            j += 1
        pack_into("H",wDataSize + 4)
 
    #m_dwSendPacketCount += 1
    #m_dwSendXorKey = dwXorKey
 
#"网络数据定义"
SOCKET_VER = 0x05    #"#网络版本"  ida_pro 逆向找到EncryptBuffer函数后可以确定此值
SOCKET_BUFFER = 8192    #"#网络缓冲"
CMD_HEAD_SIZE = 4
DWORD_SIZE= 4
WORD_SIZE = 2
BYTE_SIZE = 1
SOCKET_PACKET = ( SOCKET_BUFFER - CMD_HEAD_SIZE - 2 * DWORD_SIZE )
g_dwPacketKey = 0xA55AA55A  #"加密密钥" #从WHSocket.dll获取
 
#"发送映射"  #从WHSocket.dll获取
g_SendByteMap = (0x70,0x2F,0x40,0x5F,0x44,0x8E,0x6E,0x45,0x7E,0xAB,0x2C,0x1F,0xB4,0xAC,0x9D,0x91,0x0D,0x36,0x9B,0x0B,0xD4,0xC4,0x39,0x74,0xBF,0x23,0x16,0x14,0x06,0xEB,0x04,0x3E,0x12,0x5C,0x8B,0xBC,0x61,0x63,0xF6,0xA5,0xE1,0x65,0xD8,0xF5,0x5A,0x07,0xF0,0x13,0xF2,0x20,0x6B,0x4A,0x24,0x59,0x89,0x64,0xD7,0x42,0x6A,0x5E,0x3D,0x0A,0x77,0xE0,0x80,0x27,0xB8,0xC5,0x8C,0x0E,0xFA,0x8A,0xD5,0x29,0x56,0x57,0x6C,0x53,0x67,0x41,0xE8,0x00,0x1A,0xCE,0x86,0x83,0xB0,0x22,0x28,0x4D,0x3F,0x26,0x46,0x4F,0x6F,0x2B,0x72,0x3A,0xF1,0x8D,0x97,0x95,0x49,0x84,0xE5,0xE3,0x79,0x8F,0x51,0x10,0xA8,0x82,0xC6,0xDD,0xFF,0xFC,0xE4,0xCF,0xB3,0x09,0x5D,0xEA,0x9C,0x34,0xF9,0x17,0x9F,0xDA,0x87,0xF8,0x15,0x05,0x3C,0xD3,0xA4,0x85,0x2E,0xFB,0xEE,0x47,0x3B,0xEF,0x37,0x7F,0x93,0xAF,0x69,0x0C,0x71,0x31,0xDE,0x21,0x75,0xA0,0xAA,0xBA,0x7C,0x38,0x02,0xB7,0x81,0x01,0xFD,0xE7,0x1D,0xCC,0xCD,0xBD,0x1B,0x7A,0x2A,0xAD,0x66,0xBE,0x55,0x33,0x03,0xDB,0x88,0xB2,0x1E,0x4E,0xB9,0xE6,0xC2,0xF7,0xCB,0x7D,0xC9,0x62,0xC3,0xA6,0xDC,0xA7,0x50,0xB5,0x4B,0x94,0xC0,0x92,0x4C,0x11,0x5B,0x78,0xD9,0xB1,0xED,0x19,0xE9,0xA1,0x1C,0xB6,0x32,0x99,0xA3,0x76,0x9E,0x7B,0x6D,0x9A,0x30,0xD6,0xA9,0x25,0xC7,0xAE,0x96,0x35,0xD0,0xBB,0xD2,0xC8,0xA2,0x08,0xF3,0xD1,0x73,0xF4,0x48,0x2D,0x90,0xCA,0xE2,0x58,0xC1,0x18,0x52,0xFE,0xDF,0x68,0x98,0x54,0xEC,0x60,0x43,0x0F)
#############################################################################################
 
HOST = "192.168.1.108"
PORT = 8300
ADDR = (HOST,PORT)
m_cbLogonMode = 0xB
LOGON_BY_GAME_ID = 0xB
LOGON_BY_ACCOUNTS = 0xC
MachineID = md5 (str(random.randint(0x22222111,0xeeeeeeee)))
PassWord = md5('123456')
if m_cbLogonMode == LOGON_BY_ACCOUNTS:
    WPACKETSIZE = 0x100 #发送登录数据包的总大小，抓包可获取
    Accounts = 'youruser'   #0x42B 登录账号
if m_cbLogonMode == LOGON_BY_GAME_ID:
    WPACKETSIZE = 0xC4
    GameID = 7990986
 
'''-----------------Packet_struct--------------------------------------------'''
#############CMD_Head###################
#CMD_Info
cbVersion  = SOCKET_VER  #1B    数据类型
cbCheckCode = 0x00  #1B   校验字段    发送数据的所有字节相加
wPacketSize = WPACKETSIZE  #2B   数据大小    发送登录数据包的总大小，抓包可获取
#CMD_Command
wMainCmdID = 0x000B #2B 主命令码 源码结合逆向分析出各个命令码意义
wSubCmdID = m_cbLogonMode  #2B 子命令码
#############CMD_Head###################
#CMD_GP_LogonAccounts
PlazaVersion = 0x06090302 #4B 广场版本 逆向找到 
dwNum = 0x0100007F  # 
MachineID = MachineID #0x44B 机器序列
PassWord = PassWord #0x44B 登录密码
cbNeeValidateMBCard = 0x00 #密保校验
'''-----------------Packet_struct--------------------------------------------'''
 
global SENDBUFF
SENDBUFF = create_string_buffer(wPacketSize)
buff = create_string_buffer(wPacketSize)
 
pack_into ( "B",cbVersion )   #固定值
pack_into ( "B",cbCheckCode ) #校验码计算正确即可
pack_into ( "H",wPacketSize ) #固定值
pack_into ( "HH",4,wMainCmdID,wSubCmdID ) #不同登录类型不同固定值
 
CMD_GP_LogonAccounts_Size = wPacketSize - 4 - 4  - 4  #cmd_info 、cmd_command 、m_dwSendXorKey
PlazaVersion_offset = 8
 
pack_into ("I",PlazaVersion_offset,PlazaVersion )
pack_into ("I",PlazaVersion_offset + 4,dwNum )
 
MachineID_offset = PlazaVersion_offset + DWORD_SIZE + DWORD_SIZE  #PlazaVersion 和 dwNum
a2u (buff,MachineID,MachineID_offset  )
if wSubCmdID == LOGON_BY_GAME_ID:
    pack_into ("I",MachineID_offset + 0x42,GameID )
    a2u (buff,PassWord,MachineID_offset + 0x42 + 4 )
if wSubCmdID == LOGON_BY_ACCOUNTS:
    a2u (buff,MachineID_offset + 0x42 )
    a2u (buff,Accounts,MachineID_offset  + 0x42 + 0x42 )
    pack_into ("B",MachineID_offset + 0x42 + 0x42 + 0x40,cbNeeValidateMBCard )
 
wDataSize = wPacketSize - 4 #前面把m_dwSendXorKey 也算上了
'''
i = 0
while i < wDataSize:
    print hex(i),print hex(ord(buff[i]))
 
    i += 1
exit()
'''
  
EncryptBuffer(buff,wDataSize)
 
SendLogonPacket(ADDR,SENDBUFF) #accounts登录时返回数据大小 257 用户名密码机器码正确， 12机器码更换   68用户密码错误 78机器码不正确

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