Conster[] CreateConsters(_Context txt, Random rand, string injectName,
FieldDefinition constTbl, FieldDefinition constBuffer)
{
AssemblyDefinition injection = AssemblyDefinition.ReadAssembly(typeof(Iid).Assembly.Location);
injection.MainModule.ReadSymbols();
MethodDefinition method = injection.MainModule.GetType("Encryptions").Methods.FirstOrDefault(mtd => mtd.Name == "Constants");
List<Conster> ret = new List<Conster>();
TypeDefinition lzma = mod.GetType("Lzma" + mod.GetHashCode());
if (lzma == null)
{
lzma = CecilHelper.Inject(mod, injection.MainModule.GetType("Lzma"));
lzma.IsNotPublic = true;
lzma.Name = "Lzma" + mod.GetHashCode();
mod.Types.Add(lzma);
}
rand.NextBytes(txt.keyBuff);
for (int i = 0; i < txt.keyBuff.Length; i++)
txt.keyBuff[i] &= 0x7f;
txt.keyBuff[0] = 7; txt.keyBuff[1] = 0;
txt.resKey = (rand.Next(0x20, 0x80) << 24) | (rand.Next(0x20, 0x80) << 32) |
(rand.Next(0x20, 0x80) << 16) | (rand.Next(0x20, 0x80) << 0 );
txt.resId = Encoding.UTF8.GetString(BitConverter.GetBytes(txt.resKey));
txt.key = (uint)rand.Next();
Database.AddEntry("Const", "KeyBuff", txt.keyBuff);
Database.AddEntry("Const", "ResKey", txt.resKey);
Database.AddEntry("Const", "ResId", txt.resId);
Database.AddEntry("Const", "Key", txt.key);
Mutator mutator = new Mutator();
MethodDefinition init = injection.MainModule.GetType("Encryptions").Methods.FirstOrDefault(mtd => mtd.Name == injectName);
{
MethodDefinition cctor = mod.GetType("<Module>").GetStaticConstructor();
MethodDefinition m = CecilHelper.Inject(mod, init);
Instruction placeholder = null;
mutator.IntKeys = new int[] { txt.resKey };
mutator.Mutate(Random, m.Body);
txt.keyInst = mutator.Delayed0;
placeholder = mutator.Placeholder;
foreach (Instruction inst in m.Body.Instructions)
{
if (inst.Operand is FieldReference)
{
if ((inst.Operand as FieldReference).Name == "constTbl")
inst.Operand = constTbl;
else if ((inst.Operand as FieldReference).Name == "constBuffer")
inst.Operand = constBuffer;
}
else if (inst.Operand is MethodReference &&
(inst.Operand as MethodReference).DeclaringType.Name == "LzmaDecoder")
inst.Operand = lzma.NestedTypes
.Single(_ => _.Name == "LzmaDecoder").Methods
.Single(_ => _.Name == (inst.Operand as MethodReference).Name);
}
foreach (var i in m.Body.Variables)
if (i.VariableType.Name == "LzmaDecoder")
i.VariableType = lzma.NestedTypes.Single(_ => _.Name == "LzmaDecoder");
if (txt.isNative)
CecilHelper.Replace(m.Body, placeholder, new Instruction[]
{
Instruction.Create(OpCodes.Call, txt.nativeDecr)
});
else if (txt.isDyn)
{
Instruction ldloc = placeholder.Previous;
m.Body.Instructions.Remove(placeholder.Previous); //ldloc
CecilHelper.Replace(m.Body, placeholder, new CecilVisitor(txt.invExp, new Instruction[]
{
ldloc
}).GetInstructions());
}
ILProcessor psr = cctor.Body.GetILProcessor();
Instruction begin = cctor.Body.Instructions[0];
for (int i = m.Body.Instructions.Count - 1; i >= 0; i--)
{
if (m.Body.Instructions[i].OpCode != OpCodes.Ret)
psr.InsertBefore(0, m.Body.Instructions[i]);
}
cctor.Body.InitLocals = true;
foreach (var i in m.Body.Variables)
cctor.Body.Variables.Add(i);
}
byte[] n = new byte[0x10];
int typeDefCount = rand.Next(1, 10);
for (int i = 0; i < typeDefCount; i++)
{
TypeDefinition typeDef = new TypeDefinition(
"", ObfuscationHelper.GetRandomName(),
TypeAttributes.Class | TypeAttributes.Abstract | TypeAttributes.NotPublic | TypeAttributes.Sealed,
mod.TypeSystem.Object);
mod.Types.Add(typeDef);
int methodCount = rand.Next(1, 5);
Database.AddEntry("Const", "ConsterTypes", typeDef.FullName);
for (int j = 0; j < methodCount; j++)
{
MethodDefinition mtd = CecilHelper.Inject(mod, method);
mtd.Name = ObfuscationHelper.GetRandomName();
mtd.IsCompilerControlled = true;
AddHelper(mtd, HelperAttribute.NoInjection);
typeDef.Methods.Add(mtd);
Database.AddEntry("Const", "ConsterMethods", mtd.FullName);
Conster conster = new Conster();
conster.key0 = (long)rand.Next() * rand.Next();
conster.key1 = (long)rand.Next() * rand.Next();
conster.key2 = (long)rand.Next() * rand.Next();
conster.key3 = rand.Next();
conster.conster = mtd;
Database.AddEntry("Const", mtd.FullName, string.Format("{0:X}, {1:X}, {2:X}, {3:X}", conster.key0, conster.key1, conster.key2, conster.key3));
mutator = new Mutator();
mutator.LongKeys = new long[]
{
conster.key0,
conster.key1,
conster.key2
};
mutator.IntKeys = new int[] { conster.key3 };
mutator.Mutate(Random, mtd.Body);
foreach (Instruction inst in mtd.Body.Instructions)
if (inst.Operand is FieldReference)
{
if ((inst.Operand as FieldReference).Name == "constTbl")
inst.Operand = constTbl;
else if ((inst.Operand as FieldReference).Name == "constBuffer")
inst.Operand = constBuffer;
}
conster.keyInst = mutator.Delayed0;
ret.Add(conster);
}
}
return ret.ToArray();
}
Conster[] CreateConsters(_Context txt, Random rand, string injectName,
FieldDefinition constTbl, FieldDefinition constBuffer)
{
AssemblyDefinition injection = AssemblyDefinition.ReadAssembly(typeof(Iid).Assembly.Location);
injection.MainModule.ReadSymbols();
MethodDefinition method = injection.MainModule.GetType("Encryptions").Methods.FirstOrDefault(mtd => mtd.Name == "Constants");
List <Conster> ret = new List <Conster>();
TypeDefinition lzma = mod.GetType("Lzma" + mod.GetHashCode());
if (lzma == null)
{
lzma = CecilHelper.Inject(mod, injection.MainModule.GetType("Lzma"));
lzma.IsNotPublic = true;
lzma.Name = "Lzma" + mod.GetHashCode();
mod.Types.Add(lzma);
}
rand.NextBytes(txt.keyBuff);
for (int i = 0; i < txt.keyBuff.Length; i++)
{
txt.keyBuff[i] &= 0x7f;
}
txt.keyBuff[0] = 7; txt.keyBuff[1] = 0;
txt.resKey = (rand.Next(0x20, 0x80) << 24) | (rand.Next(0x20, 0x80) << 32) |
(rand.Next(0x20, 0x80) << 16) | (rand.Next(0x20, 0x80) << 0);
txt.resId = Encoding.UTF8.GetString(BitConverter.GetBytes(txt.resKey));
txt.key = (uint)rand.Next();
Database.AddEntry("Const", "KeyBuff", txt.keyBuff);
Database.AddEntry("Const", "ResKey", txt.resKey);
Database.AddEntry("Const", "ResId", txt.resId);
Database.AddEntry("Const", "Key", txt.key);
Mutator mutator = new Mutator();
MethodDefinition init = injection.MainModule.GetType("Encryptions").Methods.FirstOrDefault(mtd => mtd.Name == injectName);
{
MethodDefinition cctor = mod.GetType("<Module>").GetStaticConstructor();
MethodDefinition m = CecilHelper.Inject(mod, init);
Instruction placeholder = null;
mutator.IntKeys = new int[] { txt.resKey };
mutator.Mutate(Random, m.Body);
txt.keyInst = mutator.Delayed0;
placeholder = mutator.Placeholder;
foreach (Instruction inst in m.Body.Instructions)
{
if (inst.Operand is FieldReference)
{
if ((inst.Operand as FieldReference).Name == "constTbl")
{
inst.Operand = constTbl;
}
else if ((inst.Operand as FieldReference).Name == "constBuffer")
{
inst.Operand = constBuffer;
}
}
else if (inst.Operand is MethodReference &&
(inst.Operand as MethodReference).DeclaringType.Name == "LzmaDecoder")
{
inst.Operand = lzma.NestedTypes
.Single(_ => _.Name == "LzmaDecoder").Methods
.Single(_ => _.Name == (inst.Operand as MethodReference).Name);
}
}
foreach (var i in m.Body.Variables)
{
if (i.VariableType.Name == "LzmaDecoder")
{
i.VariableType = lzma.NestedTypes.Single(_ => _.Name == "LzmaDecoder");
}
}
if (txt.isNative)
{
CecilHelper.Replace(m.Body, placeholder, new Instruction[]
{
Instruction.Create(OpCodes.Call, txt.nativeDecr)
});
}
else if (txt.isDyn)
{
Instruction ldloc = placeholder.Previous;
m.Body.Instructions.Remove(placeholder.Previous); //ldloc
CecilHelper.Replace(m.Body, placeholder, new CecilVisitor(txt.invExp, new Instruction[]
{
ldloc
}).GetInstructions());
}
ILProcessor psr = cctor.Body.GetILProcessor();
Instruction begin = cctor.Body.Instructions[0];
for (int i = m.Body.Instructions.Count - 1; i >= 0; i--)
{
if (m.Body.Instructions[i].OpCode != OpCodes.Ret)
{
psr.InsertBefore(0, m.Body.Instructions[i]);
}
}
cctor.Body.InitLocals = true;
foreach (var i in m.Body.Variables)
{
cctor.Body.Variables.Add(i);
}
}
byte[] n = new byte[0x10];
int typeDefCount = rand.Next(1, 10);
for (int i = 0; i < typeDefCount; i++)
{
TypeDefinition typeDef = new TypeDefinition(
"", ObfuscationHelper.GetRandomName(),
TypeAttributes.Class | TypeAttributes.Abstract | TypeAttributes.NotPublic | TypeAttributes.Sealed,
mod.TypeSystem.Object);
mod.Types.Add(typeDef);
int methodCount = rand.Next(1, 5);
Database.AddEntry("Const", "ConsterTypes", typeDef.FullName);
for (int j = 0; j < methodCount; j++)
{
MethodDefinition mtd = CecilHelper.Inject(mod, method);
mtd.Name = ObfuscationHelper.GetRandomName();
mtd.IsCompilerControlled = true;
AddHelper(mtd, HelperAttribute.NoInjection);
typeDef.Methods.Add(mtd);
Database.AddEntry("Const", "ConsterMethods", mtd.FullName);
Conster conster = new Conster();
conster.key0 = (long)rand.Next() * rand.Next();
conster.key1 = (long)rand.Next() * rand.Next();
conster.key2 = (long)rand.Next() * rand.Next();
conster.key3 = rand.Next();
conster.conster = mtd;
Database.AddEntry("Const", mtd.FullName, string.Format("{0:X}, {1:X}, {2:X}, {3:X}", conster.key0, conster.key1, conster.key2, conster.key3));
mutator = new Mutator();
mutator.LongKeys = new long[]
{
conster.key0,
conster.key1,
conster.key2
};
mutator.IntKeys = new int[] { conster.key3 };
mutator.Mutate(Random, mtd.Body);
foreach (Instruction inst in mtd.Body.Instructions)
{
if (inst.Operand is FieldReference)
{
if ((inst.Operand as FieldReference).Name == "constTbl")
{
inst.Operand = constTbl;
}
else if ((inst.Operand as FieldReference).Name == "constBuffer")
{
inst.Operand = constBuffer;
}
}
}
conster.keyInst = mutator.Delayed0;
ret.Add(conster);
}
}
return(ret.ToArray());
}
