Reverse/keygenme3/source/keygen1/keygen1/Form1.cs

94 lines
3.3 KiB
C#
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using System.Runtime.InteropServices;
using System.Text;
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_GETTEXT = 0x000D;
const uint WM_SETTEXT = 0x000C;
const uint BM_CLICK = 0x00F5;
public Form1()
{
InitializeComponent();
}
private void Button1_Click(object sender, EventArgs e)
{
FillAndSubmitKey();
}
private static string GenerateKey(string username)
{
char firstChar = username[0];
string newChar = "";
if ((firstChar >= 'a' && firstChar < 'z') ||
(firstChar >= 'A' && firstChar < 'Z') ||
(firstChar >= '0' && firstChar < '9'))
{
char incrementedChar = (char)(firstChar + 1);
newChar = incrementedChar.ToString();
}
string seconds = DateTime.Now.Second.ToString("D2");
string yearLastTwoDigits = DateTime.Now.Year.ToString().Substring(2, 2);
string s1 = "Grand-Theft-Auto-Vice-City";
string s2 = "bbidhan-ThE-Great";
return $"{newChar}{seconds}{yearLastTwoDigits}{s1}{s2}";
}
private void FillAndSubmitKey()
{
string windowTitle = "KeyGen me #3# by :bbidhan";
IntPtr hWnd = FindWindow(null, windowTitle);
if (hWnd == IntPtr.Zero)
{
MessageBox.Show("<22><><EFBFBD><EFBFBD>δ<EFBFBD>ҵ<EFBFBD>");
return;
}
int usernameControlId = 6;
int keyControlId = 5;
int submitButtonId = 4;
IntPtr usernameHwnd = GetDlgItem(hWnd, usernameControlId);
IntPtr keyHwnd = GetDlgItem(hWnd, keyControlId);
IntPtr submitButtonHwnd = GetDlgItem(hWnd, submitButtonId);
if (usernameHwnd == IntPtr.Zero || keyHwnd == IntPtr.Zero || submitButtonHwnd == IntPtr.Zero)
{
MessageBox.Show("<22>ؼ<EFBFBD>δ<EFBFBD>ҵ<EFBFBD>");
return;
}
StringBuilder usernameBuffer = new(256);
SendMessage(usernameHwnd, WM_GETTEXT, new IntPtr(usernameBuffer.Capacity), usernameBuffer);
string username = usernameBuffer.ToString();
string key = GenerateKey(username);
StringBuilder usernameToSet = new(username);
StringBuilder keyToSet = new(key);
SendMessage(usernameHwnd, WM_SETTEXT, IntPtr.Zero, usernameToSet);
SendMessage(keyHwnd, WM_SETTEXT, IntPtr.Zero, keyToSet);
SendMessage(submitButtonHwnd, BM_CLICK, IntPtr.Zero, IntPtr.Zero);
textBox1.Text = username;
textBox2.Text = key;
}
}
}