public override string Decrypt(MethodDef caller, int magic)
{
var reader = stringDecrypter.reader;
reader.Position = (caller.MDToken.ToInt32() ^ magic) - stringDecrypter.magic1;
int len = reader.ReadInt32() ^ (int)~stringDecrypter.magic2;
var rand = new Random(caller.MDToken.ToInt32());
var instrs = stringDecrypter.decryptMethod.Body.Instructions;
constReader = new PolyConstantsReader(instrs, false);
int polyIndex = ConfuserUtils.FindCallMethod(instrs, 0, Code.Callvirt, "System.Int64 System.IO.BinaryReader::ReadInt64()");
if (polyIndex < 0)
{
throw new ApplicationException("Could not find start of decrypt code");
}
var decrypted = new byte[len];
for (int i = 0; i < len; i += 8)
{
constReader.Arg = reader.ReadInt64();
int index = polyIndex;
long val;
if (!constReader.GetInt64(ref index, out val) || instrs[index].OpCode.Code != Code.Conv_I8)
{
throw new ApplicationException("Could not get string int64 value");
}
Array.Copy(BitConverter.GetBytes(val ^ rand.Next()), 0, decrypted, i, Math.Min(8, len - i));
}
return(Encoding.Unicode.GetString(decrypted));
}
public override string Decrypt(MethodDef caller, int magic) {
var reader = stringDecrypter.reader;
reader.Position = (caller.MDToken.ToInt32() ^ magic) - stringDecrypter.magic1;
int len = reader.ReadInt32() ^ (int)~stringDecrypter.magic2;
var rand = new Random(caller.MDToken.ToInt32());
var instrs = stringDecrypter.decryptMethod.Body.Instructions;
constReader = new PolyConstantsReader(instrs, false);
int polyIndex = ConfuserUtils.FindCallMethod(instrs, 0, Code.Callvirt, "System.Int64 System.IO.BinaryReader::ReadInt64()");
if (polyIndex < 0)
throw new ApplicationException("Could not find start of decrypt code");
var decrypted = new byte[len];
for (int i = 0; i < len; i += 8) {
constReader.Arg = reader.ReadInt64();
int index = polyIndex;
long val;
if (!constReader.GetInt64(ref index, out val) || instrs[index].OpCode.Code != Code.Conv_I8)
throw new ApplicationException("Could not get string int64 value");
Array.Copy(BitConverter.GetBytes(val ^ rand.Next()), 0, decrypted, i, Math.Min(8, len - i));
}
return Encoding.Unicode.GetString(decrypted);
}
