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Helper.cs
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Helper.cs
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using System;
using System.IO;
using System.Linq;
using System.Text;
using System.Collections.Generic;
using System.Security.Cryptography;
using System.Runtime.InteropServices;
using Donut.Structs;
namespace Donut
{
public class Helper
{
[StructLayout(LayoutKind.Explicit)]
public unsafe struct M
{
[FieldOffset(0)] public fixed byte b[16];
[FieldOffset(0)] public fixed UInt32 w[2];
}
[StructLayout(LayoutKind.Explicit)]
public unsafe struct X
{
[FieldOffset(0)] public fixed UInt32 w[2];
[FieldOffset(0)] public fixed UInt64 q[2];
}
public static void EditTemplate(string outfile)
{
try
{
string payload = File.ReadAllText(@"Templates\Program.cs");
if (payload.Contains("{COCONUT}"))
{
string b64update = payload.Replace("{COCONUT}", File.ReadAllText($"{outfile}.b64"));
File.WriteAllText(@"Templates\Program.cs", b64update);
Console.WriteLine("Updated Template");
}
else
{
Console.WriteLine("{COCONUT} not found");
}
}
catch
{
Console.WriteLine("Failed to update template");
}
}
public static void CompileTemplate()
{
}
// This parses if using nuget package
public static int ParseArguments(ref DonutConfig args, ref DSConfig config)
{
int ret;
// If no input file
if (string.IsNullOrEmpty(args.InputFile) == true)
{
return Constants.DONUT_ERROR_FILE_NOT_FOUND;
}
// URL not supported yet
if (string.IsNullOrEmpty(args.URL) == false)
{
return Constants.DONUT_ERROR_INVALID_URL;
}
// Assign values
config.arch = args.Arch;
config.bypass = args.Bypass;
if (string.IsNullOrEmpty(args.Class) == false)
{
Helper.Copy(config.cls, args.Class);
}
if (string.IsNullOrEmpty(args.Domain) == false)
{
Helper.Copy(config.domain, args.Domain);
}
if (string.IsNullOrEmpty(args.Method) == false)
{
Helper.Copy(config.method, args.Method);
}
if (string.IsNullOrEmpty(args.Runtime) == false)
{
Helper.Copy(config.runtime, args.Runtime);
}
if (string.IsNullOrEmpty(args.Payload) == false)
{
Helper.Copy(config.outfile, args.Payload);
}
if (string.IsNullOrEmpty(args.Args) == false)
{
Helper.Copy(config.param, args.Args);
}
if (string.IsNullOrEmpty(args.InputFile) == false)
{
Helper.Copy(config.file, args.InputFile);
}
return Constants.DONUT_ERROR_SUCCESS;
}
// This parses if using commandline
public static void ParseArguments(Options opts, ref DSConfig config)
{
try
{
if (opts.InputFile.Equals(null) == false)
{
char[] buffer = opts.InputFile.ToCharArray();
Array.Copy(buffer, 0, config.file, 0, buffer.Length);
Console.WriteLine($"\tFile:\t {opts.InputFile}");
}
}
catch { };
try
{
if (opts.Arch.Equals(null) == false)
{
config.arch = opts.Arch;
Console.WriteLine($"\tArch:\t {config.arch}");
};
}
catch { };
try
{
if (opts.Level.Equals(null) == false)
{
config.bypass = opts.Level;
Console.WriteLine($"\tBypass:\t {config.bypass}");
};
}
catch { };
try
{
if (opts.NamespaceClass.Equals(null) == false)
{
char[] buffer = opts.NamespaceClass.ToCharArray();
Array.Copy(buffer, 0, config.cls, 0, buffer.Length);
Console.WriteLine($"\tClass:\t {opts.NamespaceClass}");
};
}
catch { };
try
{
if (opts.Payload.Equals(null) == false)
{
char[] buffer = opts.Payload.ToCharArray();
Array.Copy(buffer, 0, config.outfile, 0, buffer.Length);
Console.WriteLine($"\tOutFile:\t {opts.Payload}");
};
}
catch { };
try
{
if (opts.Method.Equals(null) == false)
{
char[] buffer = opts.Method.ToCharArray();
Array.Copy(buffer, 0, config.method, 0, buffer.Length);
Console.WriteLine($"\tMethod:\t {opts.Method}");
};
}
catch { };
try
{
if (opts.Args.Equals(null) == false)
{
char[] buffer = opts.Args.ToCharArray();
Array.Copy(buffer, 0, config.param, 0, buffer.Length);
Console.WriteLine($"\tArgs:\t {opts.Args}");
};
}
catch { };
try
{
if (opts.Version.Equals(null) == false)
{
char[] buffer = opts.Version.ToCharArray();
Array.Copy(buffer, 0, config.runtime, 0, buffer.Length);
Console.WriteLine($"\tVersion:\t {opts.Version}");
};
}
catch { };
try
{
if (opts.URL.Equals(null) == false)
{
char[] buffer = opts.URL.ToCharArray();
Array.Copy(buffer, 0, config.url, 0, buffer.Length);
config.inst_type = Constants.DONUT_INSTANCE_URL;
Console.WriteLine($"\tURL:\t {opts.URL}");
};
}
catch { };
}
public static int ParseConfig(ref DSConfig config, ref DSFileInfo fi)
{
D.Print("Entering ParseConfig()");
string file = new string(config.file).Replace("\0", "");
// Checks if file exists
if (File.Exists(file) == false)
{
return Constants.DONUT_ERROR_INVALID_PARAMETER;
}
// Validate URL
if (config.inst_type == Constants.DONUT_INSTANCE_URL)
{
// Make sure it's a validate URL (check this don't know exactly how it's checking)
D.Print("Validating URL");
if (Uri.IsWellFormedUriString(String(config.url), UriKind.Absolute) == false)
{
return Constants.DONUT_ERROR_INVALID_URL;
}
// If URL doesn't have trailing slash, add one
//if (config.url(config.url.Length - 1) != "/")
//{
// config.url += "/";
//}
}
// Validate Arch
D.Print("Checking for Arch Mismatch");
if (config.arch != Constants.DONUT_ARCH_ANY &&
config.arch != Constants.DONUT_ARCH_X86 &&
config.arch != Constants.DONUT_ARCH_X84 &&
config.arch != Constants.DONUT_ARCH_X64)
{
return Constants.DONUT_ERROR_INVALID_ARCH;
}
// Validate AMSI/WDLP Bypass Option
D.Print("Validating Bypass Option");
if (config.bypass != Constants.DONUT_BYPASS_SKIP &&
config.bypass != Constants.DONUT_BYPASS_ABORT &&
config.bypass != Constants.DONUT_BYPASS_CONTINUE)
{
return Constants.DONUT_ERROR_BYPASS_INVALID;
}
// Get File Info
var ret = ParseInputFile(file, ref fi);
if (ret != Constants.DONUT_ERROR_SUCCESS)
{
return ret;
}
// Set Module Type
config.mod_type = fi.type;
if (config.mod_type == Constants.DONUT_MODULE_DLL || config.mod_type == Constants.DONUT_MODULE_EXE)
{
// Check for Arch mismatch
if ((config.arch == Constants.DONUT_ARCH_X86 && fi.arch == Constants.DONUT_ARCH_X64) ||
(config.arch == Constants.DONUT_ARCH_X64 && fi.arch == Constants.DONUT_ARCH_X86))
{
return Constants.DONUT_ERROR_ARCH_MISMATCH;
}
// Check existence of DLL function specified
if (config.mod_type == Constants.DONUT_MODULE_DLL && config.method != null)
{
try
{
var exported = new PeNet.PeFile(file).ExportedFunctions;
bool found = false;
foreach (var func in exported)
{
if (func.Name == String(config.method))
{
found = true;
}
}
if (found == false)
{
return Constants.DONUT_ERROR_DLL_FUNCTION;
}
}
catch
{
return Constants.DONUT_ERROR_DLL_FUNCTION;
}
}
// If unmanaged DLL with params, need function
if (config.mod_type == Constants.DONUT_MODULE_DLL && config.param != null)
{
if (config.method == null)
{
return Constants.DONUT_ERROR_DLL_PARAM;
}
}
}
// If .NET DLL make sure Method and Class provided
if (config.mod_type == Constants.DONUT_MODULE_NET_DLL)
{
if (config.cls == null || config.method == null)
{
return Constants.DONUT_ERROR_NET_PARAMS;
}
}
return Constants.DONUT_ERROR_SUCCESS;
}
public static int ParseInputFile(string file, ref DSFileInfo fi)
{
D.Print("Entering ParseInputFile()");
PeNet.PeFile PE;
var extension = Path.GetExtension(file);
D.Print($"File extension is: {extension}");
// If supplied file is a directory
if (extension == null)
{
return Constants.DONUT_ERROR_FILE_INVALID;
}
// Parse extension
if (extension == ".vbs")
{
fi.type = Constants.DONUT_MODULE_VBS;
fi.arch = Constants.DONUT_ARCH_ANY;
}
else if (extension == ".js")
{
fi.type = Constants.DONUT_MODULE_JS;
fi.arch = Constants.DONUT_ARCH_ANY;
}
else if (extension == ".xsl")
{
fi.type = Constants.DONUT_MODULE_XSL;
fi.arch = Constants.DONUT_ARCH_ANY;
}
else if (extension == ".exe")
{
fi.type = Constants.DONUT_MODULE_EXE;
fi.arch = Constants.DONUT_ARCH_ANY;
}
else if (extension == ".dll")
{
fi.type = Constants.DONUT_MODULE_DLL;
fi.arch = Constants.DONUT_ARCH_ANY;
}
else
{
return Constants.DONUT_ERROR_FILE_INVALID;
}
// Do PE parsing for .dll and .exe
if (fi.type == Constants.DONUT_MODULE_DLL || fi.type == Constants.DONUT_MODULE_EXE)
{
D.Print("Parsing PE file");
try
{
PE = new PeNet.PeFile(file);
if (PE.ImageDosHeader == null)
{
return Constants.DONUT_ERROR_FILE_INVALID;
}
if (PE.ImageNtHeaders == null)
{
return Constants.DONUT_ERROR_FILE_INVALID;
}
}
catch
{
return Constants.DONUT_ERROR_FILE_INVALID;
}
// Check and Reset Arch
if (PE.Is32Bit == true)
{
fi.arch = Constants.DONUT_ARCH_X86;
}
else
{
fi.arch = Constants.DONUT_ARCH_X64;
}
// Check .NET and Reset Type
if (PE.HasValidComDescriptor == true)
{
D.Print("COM Descriptor found, .NET selected");
if (PE.IsDLL == true)
{
fi.type = Constants.DONUT_MODULE_NET_DLL;
}
else
{
fi.type = Constants.DONUT_MODULE_NET_EXE;
}
Copy(fi.ver, PE.MetaDataHdr.Version);
D.Print($"Runtime found in Metadata Header: {String(fi.ver)}");
}
else if (PE.ImageRelocationDirectory.Length == 0)
{
//Think this should be ok?
return Constants.DONUT_ERROR_NORELOC;
}
}
return Constants.DONUT_ERROR_SUCCESS;
}
public static void APIImports(ref DSInstance inst)
{
UInt64 dll_hash, final;
inst.api.hash = new UInt64[64];
D.Print("Generating API Hashes");
Dictionary<string, List<string>> apiimports = new Dictionary<string, List<string>>
{
{
Constants.KERNEL32_DLL,
new List<string> {
"LoadLibraryA", "GetProcAddress", "GetModuleHandleA", "VirtualAlloc", "VirtualFree",
"VirtualQuery", "VirtualProtect", "Sleep", "MultiByteToWideChar", "GetUserDefaultLCID"}
},
{
Constants.OLEAUT32_DLL,
new List<string> {
"SafeArrayCreate", "SafeArrayCreateVector", "SafeArrayPutElement", "SafeArrayDestroy", "SafeArrayGetLBound",
"SafeArrayGetUBound", "SysAllocString", "SysFreeString", "LoadTypeLib"}
},
{
Constants.WININET_DLL,
new List<string> {
"InternetCrackUrlA", "InternetOpenA", "InternetConnectA", "InternetSetOptionA", "InternetReadFile",
"InternetCloseHandle", "HttpOpenRequestA", "HttpSendRequestA", "HttpQueryInfoA"}
},
{
Constants.MSCOREE_DLL,
new List<string> {
"CorBindToRuntime", "CLRCreateInstance"}
},
{
Constants.OLE32_DLL,
new List<string> {
"CoInitializeEx", "CoCreateInstance", "CoUninitialize"}
}
};
// Generate hashes
for (var l = 0; l < apiimports.Count; l++)
{
for (var i = 0; i < apiimports.ElementAt(l).Value.Count; i++)
{
dll_hash = Maru(apiimports.ElementAt(l).Key, ref inst);
final = Maru(apiimports.ElementAt(l).Value[i], ref inst) ^ dll_hash;
D.Print($"{apiimports.ElementAt(l).Key}\t{apiimports.ElementAt(l).Value[i]}\t{string.Format("{0:X}", final)}");
inst.api.hash[inst.api_cnt++] = final;
}
}
// Initialize substruct
inst.d = new DLL[Constants.DONUT_MAX_DLL];
for (int i = 0; i < inst.d.Length; i++)
{
inst.d[i] = new DLL
{
dll_name = new char[32]
};
}
// Assign hashes
string[] dlls = new string[4] { "ole32.dll", "oleaut32.dll", "wininet.dll", "mscoree.dll" };
for (int i = 0; i < dlls.Length; i++)
{
char[] dllchar = new char[32];
Copy(dllchar, dlls[i]);
for (int l = 0; l < dllchar.Length; l++)
{
inst.d[i].dll_name[l] = dllchar[l];
}
inst.dll_cnt = dlls.Length;
}
D.Print($"DLL Count: {inst.dll_cnt}");
D.Print($"API Count: {inst.api_cnt}");
}
// Correlate error value to string
public static string GetError(int ret)
{
string returnval = "";
switch (ret)
{
case Constants.DONUT_ERROR_SUCCESS:
returnval = "[*] Success";
break;
case Constants.DONUT_ERROR_FILE_NOT_FOUND:
returnval = "[-] File not found";
break;
case Constants.DONUT_ERROR_FILE_EMPTY:
returnval = "[-] File is empty";
break;
case Constants.DONUT_ERROR_FILE_ACCESS:
returnval = "[-] Cannot open file";
break;
case Constants.DONUT_ERROR_FILE_INVALID:
returnval = "[-] File is invalid";
break;
case Constants.DONUT_ERROR_NET_PARAMS:
returnval = "[-] File is a .NET DLL. Donut requires a class and method";
break;
case Constants.DONUT_ERROR_NO_MEMORY:
returnval = "[-] No memory available";
break;
case Constants.DONUT_ERROR_INVALID_ARCH:
returnval = "[-] Invalid architecture specified";
break;
case Constants.DONUT_ERROR_INVALID_URL:
returnval = "[-] Invalid URL";
break;
case Constants.DONUT_ERROR_URL_LENGTH:
returnval = "[-] Invalid URL length";
break;
case Constants.DONUT_ERROR_INVALID_PARAMETER:
returnval = "[-] Invalid parameter";
break;
case Constants.DONUT_ERROR_RANDOM:
returnval = "[-] Error generating random values";
break;
case Constants.DONUT_ERROR_DLL_FUNCTION:
returnval = "[-] Unable to locate DLL function provided. Names are case Constants.sensitive";
break;
case Constants.DONUT_ERROR_ARCH_MISMATCH:
returnval = "[-] Target architecture cannot support selected DLL/EXE file";
break;
case Constants.DONUT_ERROR_DLL_PARAM:
returnval = "[-] You've supplied parameters for an unmanaged DLL. Donut also requires a DLL function";
break;
case Constants.DONUT_ERROR_BYPASS_INVALID:
returnval = "[-] Invalid bypass option specified";
break;
case Constants.DONUT_ERROR_NORELOC:
returnval = "[-] This file has no relocation information required for in-memory execution.";
break;
}
return returnval;
}
public dynamic InitStruct(string type)
{
if (type == "DSConfig")
{
var config = new DSConfig
{
arch = Constants.DONUT_ARCH_X84,
bypass = Constants.DONUT_BYPASS_CONTINUE,
inst_type = Constants.DONUT_INSTANCE_PIC,
mod_len = 0,
inst_len = 0,
pic = IntPtr.Zero,
pic_len = 0,
cls = new char[Constants.DONUT_MAX_NAME],
domain = new char[Constants.DONUT_MAX_NAME],
method = new char[Constants.DONUT_MAX_NAME],
modname = new char[Constants.DONUT_MAX_NAME],
file = new char[Constants.DONUT_MAX_NAME],
runtime = new char[Constants.DONUT_MAX_NAME],
url = new char[Constants.DONUT_MAX_NAME],
param = new char[(Constants.DONUT_MAX_PARAM + 1) * Constants.DONUT_MAX_NAME],
outfile = new char[Constants.DONUT_MAX_NAME]
};
Copy(config.outfile, "payload.bin");
return config;
}
else if (type == "DSModule")
{
var mod = new DSModule
{
runtime = new byte[512],
cls = new byte[512],
method = new byte[512],
domain = new byte[512],
sig = new char[256]
};
mod.p = new P[Constants.DONUT_MAX_PARAM + 1];
for (int i = 0; i < mod.p.Length; i++)
{
mod.p[i] = new P
{
param = new byte[Constants.DONUT_MAX_NAME * 2]
};
}
return mod;
}
else if (type == "DSInstance")
{
var inst = new DSInstance
{
sig = new char[256],
amsiInit = new char[16],
amsiScanBuf = new char[16],
amsiScanStr = new char[16],
clr = new char[8],
wldp = new char[16],
wldpQuery = new char[32],
wldpIsApproved = new char[32],
wscript = new char[16],
wscript_exe = new char[32],
};
inst.amsi = new AMSI();
inst.amsi.s = new char[8];
inst.key.ctr = new byte[16];
inst.key.mk = new byte[16];
inst.mod_key.ctr = new byte[16];
inst.mod_key.mk = new byte[16];
return inst;
}
return 0;
}
public static unsafe void WriteOutput(ref DSConfig config)
{
try
{
// Raw bytes to file
FileStream f = new FileStream(Helper.String(config.outfile), FileMode.Create, FileAccess.Write);
UnmanagedMemoryStream fs = new UnmanagedMemoryStream((byte*)config.pic, Convert.ToInt32(config.pic_cnt));
fs.CopyTo(f);
fs.Close();
f.Close();
Console.WriteLine($"\nRaw Payload: {Helper.String(config.outfile)}");
// Write B64 version
File.WriteAllText($@"{Helper.String(config.outfile)}.b64", Convert.ToBase64String(File.ReadAllBytes(Helper.String(config.outfile))));
Console.WriteLine($"B64 Payload: {Helper.String(config.outfile)}.b64\n");
}
catch
{
Console.WriteLine("Failed to write payload to file");
}
}
public unsafe static UInt64 Maru(string input, ref DSInstance inst)
{
byte[] zeros = new byte[Constants.MARU_BLK_LEN];
for (var i = 0; i < zeros.Length; i++) { zeros[i] = 0x00; }
var ptr = Marshal.UnsafeAddrOfPinnedArrayElement(zeros, 0);
byte[] api = Encoding.UTF8.GetBytes(input + '\0');
UInt64 h = inst.iv;
int len = 0;
int ind = 0;
bool finished = false;
M m = new M();
while (finished == false)
{
if (api[len] == 0 || len == Constants.MARU_MAX_STR)
{
Buffer.MemoryCopy(ptr.ToPointer(), m.b + ind, Marshal.SizeOf(typeof(M)), Constants.MARU_BLK_LEN - ind);
m.b[ind] = 0x80;
if (ind >= Constants.MARU_BLK_LEN - 4)
{
h ^= Maru_Crypt(m, h);
Buffer.MemoryCopy(ptr.ToPointer(), m.b, Marshal.SizeOf(typeof(M)), Constants.MARU_BLK_LEN);
}
m.w[(Constants.MARU_BLK_LEN / 4) - 1] = Convert.ToUInt32((len * 8));
ind = Constants.MARU_BLK_LEN;
finished = true;
}
else
{
m.b[ind] = api[len];
ind++; len++;
}
if (ind == Constants.MARU_BLK_LEN)
{
h ^= Maru_Crypt(m, h);
ind = 0;
}
}
return h;
}
public unsafe static UInt64 Maru_Crypt(M m, UInt64 p)
{
UInt32[] k = new UInt32[4];
UInt32 t, i;
UInt32[] c = new UInt32[4];
byte[] f = new byte[16];
for (int z = 0; z < 16; z++)
{
f[z] = m.b[z];
}
Buffer.BlockCopy(f, 0, c, 0, 16);
X x = new X();
x.q[0] = p;
for (i = 0; i < 4; i++)
{
k[i] = c[i];
}
for (i = 0; i < 27; i++)
{
x.w[0] = ((((x.w[0]) >> (8)) | ((x.w[0]) << (32 - (8)))) + x.w[1]) ^ k[0];
x.w[1] = (((x.w[1]) >> (29)) | ((x.w[1]) << (32 - (29)))) ^ x.w[0];
t = k[3];
k[3] = ((((k[1]) >> (8)) | ((k[1]) << (32 - (8)))) + k[0]) ^ i;
k[0] = (((k[0]) >> (29)) | ((k[0]) << (32 - (29)))) ^ k[3];
k[1] = k[2];
k[2] = t;
}
return x.q[0];
}
public unsafe static void Encrypt(byte[] mk, byte[] ctr, IntPtr data, UInt64 size)
{
int len = Convert.ToInt32(size);
byte[] outbuff = new byte[16];
byte[] x = new byte[16];
byte[] p = new byte[size];
byte[] c = ctr;
int i, r;
for (int f = 0; f < len; f++)
{
p[f] = Marshal.ReadByte(data, f);
}
int counter = 0;
while (len > 0)
{
for (i = 0; i < Constants.CIPHER_BLK_LEN; i++)
{
x[i] = c[i];
}
outbuff = Chaskey(mk, x);
r = len > Constants.CIPHER_BLK_LEN ? Constants.CIPHER_BLK_LEN : len;
for (i = 0; i < r; i++)
{
p[i + counter] ^= outbuff[i];
}
len -= r;
counter += 16;
// This is ugly, fix
// Just need to increment c[12] as int everytime
for (i = Constants.CIPHER_BLK_LEN; i > 0;)
{
if (c[15] == 255)
{
if (c[14] == 255)
{
c[13] = Convert.ToByte(c[13] + 1);
c[14] = Convert.ToByte(0);
c[15] = Convert.ToByte(0);
break;
}
else
{
c[14] = Convert.ToByte(c[14] + 1);
c[15] = Convert.ToByte(0);
break;
}
}
else
{
c[15] = Convert.ToByte(c[15] + 1);
break;
}
}
}
for (int f = 0; f < Convert.ToInt32(size); f++)
{
Marshal.WriteByte(data + f, 0, p[f]);
}
}
public static byte[] Chaskey(byte[] mk, byte[] datain)
{
uint[] key = new uint[4];
uint[] data = new uint[4];
Buffer.BlockCopy(mk, 0, key, 0, 16);
Buffer.BlockCopy(datain, 0, data, 0, 16);
for (int i = 0; i < 4; i++)
{
data[i] ^= key[i];
}
for (int i = 0; i < 16; i++)
{
data[0] += data[1];
data[1] = ((((data[1]) >> 27)) | ((data[1]) << (32 - (27)))) ^ data[0];
data[2] += data[3];
data[3] = ((((data[3]) >> 24)) | ((data[3]) << (32 - (24)))) ^ data[2];
data[2] += data[1];
data[0] = ((((data[0]) >> 16)) | ((data[0]) << (32 - (16)))) + data[3];
data[3] = ((((data[3]) >> 19)) | ((data[3]) << (32 - (19)))) ^ data[0];
data[1] = ((((data[1]) >> 25)) | ((data[1]) << (32 - (25)))) ^ data[2];
data[2] = ((((data[2]) >> 16)) | ((data[2]) << (32 - (16))));
}
for (int i = 0; i < 4; i++)
{
data[i] ^= key[i];
}
return data.SelectMany(BitConverter.GetBytes).ToArray();
}
public static void PUT_BYTE(byte insertbyte, ref DSConfig config)
{
IntPtr ptr = config.pic + config.pic_cnt;
byte[] src = { 0x00, insertbyte };
Marshal.WriteByte(ptr, src[1]);
config.pic_cnt++;
}
public static void PUT_WORD(byte[] sarr, ref DSConfig config)
{
IntPtr ptr = config.pic + config.pic_cnt;
for (int i = 0; i < 4; i++)
{
Marshal.WriteByte(ptr + i, sarr[i]);
config.pic_cnt++;
}
}
public static void PUT_BYTES(byte[] sarr, int cnt, ref DSConfig config)
{
IntPtr ptr = config.pic + config.pic_cnt;
for (int i = 0; i < cnt; i++)
{
Marshal.WriteByte(ptr + i, sarr[i]);
config.pic_cnt++;
}
}
public static void PUT_INST(IntPtr instptr, int cnt, ref DSConfig config)
{
IntPtr ptr = config.pic + config.pic_cnt;
for (int i = 0; i < cnt; i++)
{
Marshal.WriteByte(ptr + i, Marshal.ReadByte(instptr + i));
config.pic_cnt++;
}
Marshal.FreeHGlobal(instptr);
}
public static string RandomString(int length)
{
Random random = new Random();
const string chars = "HMN34P67R9TWCXYF";
return new string(Enumerable.Repeat(chars, length)
.Select(s => s[random.Next(s.Length)]).ToArray());
}
public static byte[] RandomBytes(int length)
{
byte[] rand = new byte[length];
RNGCryptoServiceProvider rng = new RNGCryptoServiceProvider();
rng.GetBytes(rand);
return rand;
}
public static void Unicode(byte[] dest, string buff)
{
byte[] str = Encoding.Convert(Encoding.ASCII, Encoding.Unicode, Encoding.ASCII.GetBytes(buff));
Array.Copy(str, dest, str.Length);
}
public static string String(char[] source)
{
return new string(source).Replace("\0", "");
}
public static void Copy(char[] dest, string source)
{
Array.Copy(source.ToCharArray(), 0, dest, 0, source.ToCharArray().Length);
}
public static void Copy(byte[] dest, string source)
{
byte[] src = Encoding.ASCII.GetBytes(source);
Array.Copy(src, 0, dest, 0, src.Length);
}
}
}