solved new crackme

This commit is contained in:
Chenx221 2024-09-24 14:18:24 +08:00
parent a165be7586
commit 694b158660
Signed by: chenx221
GPG Key ID: D7A9EC07024C3021
13 changed files with 748 additions and 0 deletions

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ad_cm3/AD_CM#3.zip Normal file

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{
"runtimeTarget": {
"name": ".NETCoreApp,Version=v8.0",
"signature": ""
},
"compilationOptions": {},
"targets": {
".NETCoreApp,Version=v8.0": {
"keygen1/1.0.0": {
"runtime": {
"keygen1.dll": {}
}
}
}
},
"libraries": {
"keygen1/1.0.0": {
"type": "project",
"serviceable": false,
"sha512": ""
}
}
}

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ad_cm3/keygen/keygen1.dll Normal file

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ad_cm3/keygen/keygen1.exe Normal file

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{
"runtimeOptions": {
"tfm": "net8.0",
"frameworks": [
{
"name": "Microsoft.NETCore.App",
"version": "8.0.0"
},
{
"name": "Microsoft.WindowsDesktop.App",
"version": "8.0.0"
}
],
"configProperties": {
"System.Reflection.Metadata.MetadataUpdater.IsSupported": false,
"System.Runtime.Serialization.EnableUnsafeBinaryFormatterSerialization": true
}
}
}

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ad_cm3/solve.md Normal file
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VT 22/73
DIE跑了下打包工具: Petite(2.2)
1. PEtite脱壳
在pushad后给esp下硬件read断点(word)
```assembly
0046D042 | B8 00D04600 | mov eax,ad_cm#3.46D000 | eax:@BaseThreadInitThunk@12
0046D047 | 68 B4A64500 | push ad_cm#3.45A6B4 |
0046D04C | 64:FF35 00000000 | push dword ptr fs:[0] |
0046D053 | 64:8925 00000000 | mov dword ptr fs:[0],esp |
0046D05A | 66:9C | pushf |
0046D05C | 60 | pushad |
0046D05D | 50 | push eax | <--
```
继续运行,来到这样的地方(底下全是jmp)
```assembly
0046D03D | 66:9D | popf |
0046D03F | 83C4 08 | add esp,8 |
0046D042 | B8 79B4FEFF | mov eax,FFFEB479 |
```
F8、F7几下来到OEP
```assembly
004584C0 | 55 | push ebp | OEP
004584C1 | 8BEC | mov ebp,esp |
004584C3 | 83C4 F4 | add esp,FFFFFFF4 |
004584C6 | B8 70834500 | mov eax,<ad_cm#3.sub_458370> |
```
打开Scylladump再打开ImportREC附加到运行中的`AD_CM#3.exe`。IAT自动搜索>获取导入表>自动跟踪>修正转储>修改修正后的文件EP为`584C0`
2. 随便翻找一下,然后就可以整理得到这样的内容
```c#
string name = "user input"; // ebp-4
string serial = "user input"; //ebp-14
string result = ""; //ebp-8
string part = "ADCM3-";
int time = name.Length; //ebx
v1 = 1; //esi
do {
string v2 = name; //eax
char v3 = name[v1-1]; //eax
int v4 = 3; //ecx
string v5 = ''; //edx
v3 /= v4;
v5 = v3.tostring();
result += v5;
v1++;
time--;
}while(time>0);
result = part+result;
```
细节:
```assembly
00458173 | 55 | push ebp |
00458174 | 68 71824500 | push <ad_cm#3.sub_458271> |
00458179 | 64:FF30 | push dword ptr fs:[eax] |
0045817C | 64:8920 | mov dword ptr fs:[eax],esp |
0045817F | 8D55 FC | lea edx,dword ptr ss:[ebp-4] | [ebp-04]:&"l貮"
00458182 | 8B87 D8020000 | mov eax,dword ptr ds:[edi+2D8] |
00458188 | E8 FFBEFCFF | call <ad_cm#3.GetText> |
0045818D | 8D55 F0 | lea edx,dword ptr ss:[ebp-10] |
00458190 | 8B87 D8020000 | mov eax,dword ptr ds:[edi+2D8] |
00458196 | E8 F1BEFCFF | call <ad_cm#3.GetText> |
0045819B | 837D F0 00 | cmp dword ptr ss:[ebp-10],0 | 检查name长度
0045819F | 75 0A | jne ad_cm#3.4581AB |
004581A1 | B8 88824500 | mov eax,ad_cm#3.458288 | 458288:"Enter you name, pls."
004581A6 | E8 39C1FEFF | call <ad_cm#3.ShowMessage> |
004581AB | 8D55 EC | lea edx,dword ptr ss:[ebp-14] | [ebp-14]:&"l貮"
004581AE | 8B87 DC020000 | mov eax,dword ptr ds:[edi+2DC] |
004581B4 | E8 D3BEFCFF | call <ad_cm#3.GetText> |
004581B9 | 837D EC 00 | cmp dword ptr ss:[ebp-14],0 | 检查serial长度
004581BD | 75 0A | jne ad_cm#3.4581C9 |
004581BF | B8 A8824500 | mov eax,<ad_cm#3.sub_4582A8> | 4582A8:"Enter the serial, pls."
004581C4 | E8 1BC1FEFF | call <ad_cm#3.ShowMessage> |
004581C9 | 8B45 FC | mov eax,dword ptr ss:[ebp-4] | [ebp-04]:&"l貮"
004581CC | E8 ABB9FAFF | call <ad_cm#3.sub_403B7C> | 可能是获取length
004581D1 | 8BD8 | mov ebx,eax | eax: name.length
004581D3 | 85DB | test ebx,ebx |
004581D5 | 7E 2D | jle ad_cm#3.458204 |
004581D7 | BE 01000000 | mov esi,1 |
004581DC | 8B45 FC | mov eax,dword ptr ss:[ebp-4] | [ebp-04]:&"l貮"
004581DF | 0FB64430 FF | movzx eax,byte ptr ds:[eax+esi-1] |
004581E4 | B9 03000000 | mov ecx,3 | ecx:sub_458271
004581E9 | 33D2 | xor edx,edx |
004581EB | F7F1 | div ecx | ecx:sub_458271
004581ED | 8D55 E8 | lea edx,dword ptr ss:[ebp-18] |
004581F0 | E8 0FF9FAFF | call <ad_cm#3.IntToStr> |
004581F5 | 8B55 E8 | mov edx,dword ptr ss:[ebp-18] |
004581F8 | 8D45 F8 | lea eax,dword ptr ss:[ebp-8] |
004581FB | E8 84B9FAFF | call <ad_cm#3._LStrCat> |
00458200 | 46 | inc esi |
00458201 | 4B | dec ebx |
00458202 | 75 D8 | jne ad_cm#3.4581DC | loop
00458204 | 8D45 F4 | lea eax,dword ptr ss:[ebp-C] |
00458207 | 8B4D F8 | mov ecx,dword ptr ss:[ebp-8] | ecx:sub_458271
0045820A | BA C8824500 | mov edx,ad_cm#3.4582C8 | 4582C8:"ADCM3-"
0045820F | E8 B4B9FAFF | call <ad_cm#3._LStrCat3> |
00458214 | 8D55 E4 | lea edx,dword ptr ss:[ebp-1C] |
00458217 | 8B87 DC020000 | mov eax,dword ptr ds:[edi+2DC] |
0045821D | E8 6ABEFCFF | call <ad_cm#3.GetText> |
00458222 | 8B55 E4 | mov edx,dword ptr ss:[ebp-1C] |
00458225 | 8B45 F4 | mov eax,dword ptr ss:[ebp-C] |
00458228 | E8 5FBAFAFF | call <ad_cm#3._LStrCmp> | 结果比较
0045822D | 75 0A | jne ad_cm#3.458239 |
0045822F | B8 D8824500 | mov eax,ad_cm#3.4582D8 | Success
00458234 | E8 ABC0FEFF | call <ad_cm#3.ShowMessage> |
00458239 | 33C0 | xor eax,eax |
0045823B | 5A | pop edx |
0045823C | 59 | pop ecx | ecx:sub_458271
0045823D | 59 | pop ecx | ecx:sub_458271
```

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ad_cm3/source/keygen1.sln Normal file
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EndProject
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "keygen2", "keygen2\keygen2.csproj", "{2446CB50-1882-4219-9DB0-E7F5517E6E20}"
EndProject
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "keygen3", "keygen3\keygen3.csproj", "{BC47A6DE-7F9D-4D65-A996-69FB778C95F3}"
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220
ad_cm3/source/keygen1/Form1.Designer.cs generated Normal file
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namespace keygen1
{
partial class Form1
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
button1 = new Button();
label1 = new Label();
textBox1 = new TextBox();
label2 = new Label();
textBox2 = new TextBox();
label3 = new Label();
checkBox1 = new CheckBox();
button2 = new Button();
button3 = new Button();
label4 = new Label();
textBox3 = new TextBox();
button4 = new Button();
label5 = new Label();
textBox4 = new TextBox();
SuspendLayout();
//
// button1
//
button1.Location = new Point(393, 2);
button1.Name = "button1";
button1.Size = new Size(93, 172);
button1.TabIndex = 0;
button1.Text = "Generate";
button1.UseVisualStyleBackColor = true;
button1.Click += Button1_Click;
//
// label1
//
label1.AutoSize = true;
label1.Location = new Point(30, 18);
label1.Name = "label1";
label1.Size = new Size(39, 15);
label1.TabIndex = 1;
label1.Text = "Name";
//
// textBox1
//
textBox1.Location = new Point(75, 14);
textBox1.Name = "textBox1";
textBox1.Size = new Size(262, 23);
textBox1.TabIndex = 2;
//
// label2
//
label2.AutoSize = true;
label2.Location = new Point(34, 51);
label2.Name = "label2";
label2.Size = new Size(35, 15);
label2.TabIndex = 3;
label2.Text = "Serial";
//
// textBox2
//
textBox2.Location = new Point(75, 47);
textBox2.Name = "textBox2";
textBox2.Size = new Size(262, 23);
textBox2.TabIndex = 4;
//
// label3
//
label3.AutoSize = true;
label3.Location = new Point(312, 155);
label3.Name = "label3";
label3.Size = new Size(75, 15);
label3.TabIndex = 5;
label3.Text = "By Chenx221";
//
// checkBox1
//
checkBox1.AutoSize = true;
checkBox1.Enabled = false;
checkBox1.Location = new Point(75, 155);
checkBox1.Name = "checkBox1";
checkBox1.Size = new Size(89, 19);
checkBox1.TabIndex = 6;
checkBox1.Text = "Auto Mode ";
checkBox1.UseVisualStyleBackColor = true;
//
// button2
//
button2.Location = new Point(343, 13);
button2.Name = "button2";
button2.Size = new Size(44, 24);
button2.TabIndex = 7;
button2.Text = "Copy";
button2.UseVisualStyleBackColor = true;
button2.Click += Button2_Click;
//
// button3
//
button3.Location = new Point(343, 47);
button3.Name = "button3";
button3.Size = new Size(44, 23);
button3.TabIndex = 8;
button3.Text = "Copy";
button3.UseVisualStyleBackColor = true;
button3.Click += Button3_Click;
//
// label4
//
label4.AutoSize = true;
label4.Location = new Point(10, 82);
label4.Name = "label4";
label4.Size = new Size(59, 15);
label4.TabIndex = 9;
label4.Text = "Company";
label4.Visible = false;
//
// textBox3
//
textBox3.Location = new Point(75, 79);
textBox3.Name = "textBox3";
textBox3.Size = new Size(262, 23);
textBox3.TabIndex = 10;
textBox3.Visible = false;
//
// button4
//
button4.Location = new Point(343, 79);
button4.Name = "button4";
button4.Size = new Size(44, 23);
button4.TabIndex = 11;
button4.Text = "Copy";
button4.UseVisualStyleBackColor = true;
button4.Visible = false;
button4.Click += Button4_Click;
//
// label5
//
label5.AutoSize = true;
label5.Location = new Point(31, 116);
label5.Name = "label5";
label5.Size = new Size(35, 15);
label5.TabIndex = 12;
label5.Text = "Serial";
label5.Visible = false;
//
// textBox4
//
textBox4.Location = new Point(75, 113);
textBox4.Name = "textBox4";
textBox4.Size = new Size(262, 23);
textBox4.TabIndex = 13;
textBox4.Visible = false;
//
// Form1
//
AutoScaleDimensions = new SizeF(7F, 15F);
AutoScaleMode = AutoScaleMode.Font;
ClientSize = new Size(491, 183);
Controls.Add(textBox4);
Controls.Add(label5);
Controls.Add(button4);
Controls.Add(textBox3);
Controls.Add(label4);
Controls.Add(button3);
Controls.Add(button2);
Controls.Add(checkBox1);
Controls.Add(label3);
Controls.Add(textBox2);
Controls.Add(label2);
Controls.Add(textBox1);
Controls.Add(label1);
Controls.Add(button1);
FormBorderStyle = FormBorderStyle.FixedSingle;
MaximizeBox = false;
Name = "Form1";
Text = "KeyGen For ad_cm3";
ResumeLayout(false);
PerformLayout();
}
#endregion
private Button button1;
private Label label1;
private TextBox textBox1;
private Label label2;
private TextBox textBox2;
private Label label3;
private CheckBox checkBox1;
private Button button2;
private Button button3;
private Label label4;
private TextBox textBox3;
private Button button4;
private Label label5;
private TextBox textBox4;
}
}

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@ -0,0 +1,145 @@
using System.Runtime.InteropServices;
using System.Text;
using static System.Windows.Forms.VisualStyles.VisualStyleElement.TaskbarClock;
namespace keygen1
{
public partial class Form1 : Form
{
[DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Unicode)]
static extern IntPtr FindWindow(string? lpClassName, string lpWindowName);
[DllImport("user32.dll", SetLastError = true)]
static extern IntPtr GetDlgItem(IntPtr hDlg, int nIDDlgItem);
[DllImport("user32.dll", CharSet = CharSet.Unicode, SetLastError = false)]
static extern IntPtr SendMessage(IntPtr hWnd, uint Msg, IntPtr wParam, StringBuilder? lParam);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = false)]
static extern IntPtr SendMessage(IntPtr hWnd, uint Msg, IntPtr wParam, IntPtr lParam);
const uint WM_SETTEXT = 0x000C;
const uint BM_CLICK = 0x00F5;
public Form1()
{
InitializeComponent();
}
private void Button1_Click(object sender, EventArgs e)
{
if (string.IsNullOrEmpty(textBox1.Text))
{
MessageBox.Show("Name不能为空");
return;
}
//if (string.IsNullOrEmpty(textBox2.Text))
//{
// MessageBox.Show("First Name不能为空");
// return;
//}
//if (string.IsNullOrEmpty(textBox3.Text))
//{
// MessageBox.Show("Company不能为空");
// return;
//}
//Generate(textBox1.Text, textBox2.Text, textBox3.Text);
Generate(textBox1.Text);
}
private void Generate(string username)
{
//if (username.Length <5)
//{
// MessageBox.Show("Name至少5位长度");
// return;
//}
//long[] key = GenerateKey(username, fname, company);
string key = GenerateKey(username);
//if (!int.TryParse(username, out int serial1))
//{
// MessageBox.Show("Serial1不是有效数字");
// return;
//}
//string key = GenerateKey(serial1);
//textBox4.Text = string.Join("-", key);
textBox2.Text = key;
//if (checkBox1.Checked) AutoMode(username,key);
//禁用由于controlId不固定
}
//private static string GenerateKey(string name)
//{
// return ((char)(name[name.Length - 1] ^ 3)).ToString();
//}
//private static long[] GenerateKey(string name, string fname, string company)
//{
// return [];
//}
private static string GenerateKey(string name)
{
string part = "ADCM3-";
string result = "";
for (int i = 0; i < name.Length; i++)
{
char currentChar = name[i];
int asciiValue = currentChar / 3;
result += asciiValue.ToString();
}
return part + result;
}
private static void AutoMode(string username,string key)
{
string windowTitle = "ArturDents CrackMe #2";
IntPtr hWnd = FindWindow(null, windowTitle);
if (hWnd == IntPtr.Zero)
{
MessageBox.Show("窗口未找到");
return;
}
int usernameControlId = 0xBB8;
int serialControlId = 0xBB9;
int submitButtonId = 0xBBA;
IntPtr usernameHwnd = GetDlgItem(hWnd, usernameControlId);
IntPtr serialHwnd = GetDlgItem(hWnd, serialControlId);
IntPtr submitButtonHwnd = GetDlgItem(hWnd, submitButtonId);
if (usernameHwnd == IntPtr.Zero || serialHwnd == IntPtr.Zero || submitButtonHwnd == IntPtr.Zero)
{
MessageBox.Show("控件未找到");
return;
}
StringBuilder usernameToSet = new(username);
StringBuilder serialToSet = new(key);
SendMessage(usernameHwnd, WM_SETTEXT, IntPtr.Zero, usernameToSet);
SendMessage(serialHwnd, WM_SETTEXT, IntPtr.Zero, serialToSet);
SendMessage(submitButtonHwnd, BM_CLICK, IntPtr.Zero, IntPtr.Zero);
}
private void Button2_Click(object sender, EventArgs e)
{
Clipboard.SetText(textBox1.Text);
}
private void Button3_Click(object sender, EventArgs e)
{
Clipboard.SetText(textBox2.Text);
}
private void Button4_Click(object sender, EventArgs e)
{
Clipboard.SetText(textBox3.Text);
}
}
}

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Version 2.0
The primary goals of this format is to allow a simple XML format
that is mostly human readable. The generation and parsing of the
various data types are done through the TypeConverter classes
associated with the data types.
Example:
... ado.net/XML headers & schema ...
<resheader name="resmimetype">text/microsoft-resx</resheader>
<resheader name="version">2.0</resheader>
<resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
<resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
<data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
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<value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
<comment>This is a comment</comment>
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There are any number of "resheader" rows that contain simple
name/value pairs.
Each data row contains a name, and value. The row also contains a
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Classes that don't support this are serialized and stored with the
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The mimetype is used for serialized objects, and tells the
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extensible. For a given mimetype the value must be set accordingly:
Note - application/x-microsoft.net.object.binary.base64 is the format
that the ResXResourceWriter will generate, however the reader can
read any of the formats listed below.
mimetype: application/x-microsoft.net.object.binary.base64
value : The object must be serialized with
: System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
: and then encoded with base64 encoding.
mimetype: application/x-microsoft.net.object.soap.base64
value : The object must be serialized with
: System.Runtime.Serialization.Formatters.Soap.SoapFormatter
: and then encoded with base64 encoding.
mimetype: application/x-microsoft.net.object.bytearray.base64
value : The object must be serialized into a byte array
: using a System.ComponentModel.TypeConverter
: and then encoded with base64 encoding.
-->
<xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
<xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
<xsd:element name="root" msdata:IsDataSet="true">
<xsd:complexType>
<xsd:choice maxOccurs="unbounded">
<xsd:element name="metadata">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="value" type="xsd:string" minOccurs="0" />
</xsd:sequence>
<xsd:attribute name="name" use="required" type="xsd:string" />
<xsd:attribute name="type" type="xsd:string" />
<xsd:attribute name="mimetype" type="xsd:string" />
<xsd:attribute ref="xml:space" />
</xsd:complexType>
</xsd:element>
<xsd:element name="assembly">
<xsd:complexType>
<xsd:attribute name="alias" type="xsd:string" />
<xsd:attribute name="name" type="xsd:string" />
</xsd:complexType>
</xsd:element>
<xsd:element name="data">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
<xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
</xsd:sequence>
<xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
<xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
<xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
<xsd:attribute ref="xml:space" />
</xsd:complexType>
</xsd:element>
<xsd:element name="resheader">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
</xsd:sequence>
<xsd:attribute name="name" type="xsd:string" use="required" />
</xsd:complexType>
</xsd:element>
</xsd:choice>
</xsd:complexType>
</xsd:element>
</xsd:schema>
<resheader name="resmimetype">
<value>text/microsoft-resx</value>
</resheader>
<resheader name="version">
<value>2.0</value>
</resheader>
<resheader name="reader">
<value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
</resheader>
<resheader name="writer">
<value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
</resheader>
</root>

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@ -0,0 +1,17 @@
namespace keygen1
{
internal static class Program
{
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
// To customize application configuration such as set high DPI settings or default font,
// see https://aka.ms/applicationconfiguration.
ApplicationConfiguration.Initialize();
Application.Run(new Form1());
}
}
}

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@ -0,0 +1,31 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>WinExe</OutputType>
<TargetFramework>net8.0-windows</TargetFramework>
<Nullable>enable</Nullable>
<UseWindowsForms>true</UseWindowsForms>
<ImplicitUsings>enable</ImplicitUsings>
<AllowUnsafeBlocks>true</AllowUnsafeBlocks>
<Platforms>AnyCPU;x86</Platforms>
<Authors>chenx221</Authors>
<Company>chenx221</Company>
</PropertyGroup>
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
<DebugType>portable</DebugType>
</PropertyGroup>
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x86'">
<DebugType>portable</DebugType>
</PropertyGroup>
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
<DebugType>portable</DebugType>
</PropertyGroup>
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x86'">
<DebugType>portable</DebugType>
</PropertyGroup>
</Project>