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113
HunterIDHelper.cs
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113
HunterIDHelper.cs
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using System.Text;
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namespace MHFCharacterIDConverter
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{
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public static class HunterIDHelper
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{
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public static string UIntIDToInGameID(uint Id)
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{
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string base32String = MHFBase32Converter.ToBase32((int)Id);
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string inGameID = Base32StringToInGameID(base32String);
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return inGameID;
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}
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public static uint InGameIDToUIntID(string inGameID)
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{
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string base32String = InGameIDToBase32String(inGameID);
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uint Id = (uint)MHFBase32Converter.FromBase32(base32String);
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return Id;
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}
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static string Base32StringToInGameID(string str)
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{
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string result = "";
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for (int i = str.Length - 1; i >= 0; i--)
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{
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result += str[i];
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}
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while (result.Length < 6)
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{
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result += "1";
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}
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return result;
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}
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static string InGameIDToBase32String(string str)
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{
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string result = "";
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for (int i = 0; i < str.Length; i++)
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result = str[i] + result;
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List<char> temp = result.ToList();
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result = "";
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bool bhadfristVal = false;
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for (int i = 0; i < temp.Count; i++)
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{
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if (!bhadfristVal && temp[i] == '1')
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continue;
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bhadfristVal = true;
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result += temp[i];
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}
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return result;
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}
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}
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public static class MHFBase32Converter
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{
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private const string Base35Chars = "123456789ABCDEFGHJKLMNPQRTUVWXYZ"; // 35个字符,从'1'到'Z'
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// 整数转换为35进制字符串(自定义的,其中'1'代表0)
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public static string ToBase32(int number)
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{
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StringBuilder result = new StringBuilder();
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while (number > 0)
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{
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int remainder = number % 32;
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result.Insert(0, Base35Chars[remainder]); // 注意这里不需要减1,因为直接从'1'开始
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number /= 32;
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}
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// 如果number是0,则添加'1'表示
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if (result.Length == 0)
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{
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result.Append(Base35Chars[0]);
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}
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return result.ToString();
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}
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// 35进制字符串转换为整数(自定义的,其中'1'代表0)
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public static int FromBase32(string base32String)
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{
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if (string.IsNullOrWhiteSpace(base32String)) throw new ArgumentNullException(nameof(base32String));
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int result = 0;
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int power = 1;
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for (int i = base32String.Length - 1; i >= 0; i--)
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{
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char currentChar = base32String[i];
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int index = Base35Chars.IndexOf(currentChar);
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if (index == -1)
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{
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throw new ArgumentException("Invalid character in base32 string.");
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}
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// 如果第一个字符是'1',则不需要加1,因为'1'代表0
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result += (i == 0 && currentChar == '1' ? 0 : index) * power;
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power *= 32;
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}
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return result;
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}
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}
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}
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12
MHFCharacterIDConverter.csproj
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12
MHFCharacterIDConverter.csproj
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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<OutputType>Exe</OutputType>
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<TargetFramework>net8.0</TargetFramework>
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<ImplicitUsings>enable</ImplicitUsings>
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<Nullable>enable</Nullable>
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<PublishAot>true</PublishAot>
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<InvariantGlobalization>true</InvariantGlobalization>
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</PropertyGroup>
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</Project>
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17
Program.cs
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17
Program.cs
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namespace MHFCharacterIDConverter
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{
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internal class Program
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{
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static void Main(string[] args)
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{
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//Test
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for (uint i = 1; i < 1300u; i++)
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{
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string InGameID = HunterIDHelper.UIntIDToInGameID(i);
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uint reConvID = HunterIDHelper.InGameIDToUIntID(InGameID);
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Console.WriteLine($"srcCharID: {i} | InGameID: {InGameID} | reConvID: {reConvID}");
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}
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Console.ReadLine();
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}
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}
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}
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47
README.md
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47
README.md
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##[Cn]
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在Monster Hunter Frontier (任意版本) 中,浏览角色信息,有一个ID,形如"W6BX11",这种六位数。
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通过查看服务端代码和截取包,发现服务器仅发送了uint32的数据库的CharacterID,并没有发送"W6BX11"这种字符串。
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这完全是客户端逻辑,为了不显示真实ID,做了一个换算。
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我搞清楚了其换算机制,机制如下:
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1. MHF客户端是基于0~Z的36进制,但是把‘0’、‘I’、‘O’、‘S’ 这四个字符扔了,变成32进制。
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2. 从0到32的数值,对应的表示符号是“123456789ABCDEFGHJKLMNPQRTUVWXYZ”
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3. 按照如上对应表,把uint32的CharacterID进行转换之后。
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4. 将结果倒序,(并不是HEX的高位在前,是直接整个字符串倒序)
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5. 然后不足6位填充“1”,因为“1”就是0
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相反的行为,换算回去
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已用于皓月云MHF-FW5在线网页游戏实况的需要内存采集的一部分功能。
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##[En]
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In Monster Hunter Frontier (any version), when browsing character information, there is an ID in the form of "W6BX11", a six-digit number.
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By checking the server code and intercepting the package, it was found that the server only sent the CharacterID of the uint32 database, and did not send the string "W6BX11".
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This is completely client logic. In order not to display the real ID, a conversion was made.
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I figured out its conversion mechanism, which is as follows:
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1. The MHF client is based on 36-decimal system 0~Z, but the four characters '0', 'I', 'O', and 'S' are thrown away and converted to 32-decimal system.
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2. The corresponding symbols for the values from 0 to 32 are "123456789ABCDEFGHJKLMNPQRTUVWXYZ"
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3. According to the corresponding table above, convert the CharacterID of uint32.
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4. Reverse the result (not the high bit of HEX first, but the whole string in reverse order)
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5. Then fill "1" if there are less than 6 bits, because "1" is 0
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The opposite behavior, convert back
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It has been used for some functions of axibug.com MHF-FW5 online web game live that require memory acquisition.
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