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New Dexguard String decoder for JEB 1.5. Tested on GFE 3.1.3. This release auto parse decoder function.
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| import jeb.api.IScript; | |
| import jeb.api.JebInstance; | |
| import jeb.api.ast.*; | |
| import jeb.api.ast.Class; | |
| import jeb.api.dex.*; | |
| import jeb.api.ui.JavaView; | |
| import jeb.api.ui.View; | |
| import java.util.Arrays; | |
| import java.util.HashMap; | |
| import java.util.List; | |
| import java.util.regex.Pattern; | |
| /** | |
| * Created by AKosterin on 31/01/16. | |
| */ | |
| public class DexGuardDecoder implements IScript { | |
| private static JebInstance mJebInstance; | |
| private static HashMap<String,byte[]> staticByteArrays; | |
| private static HashMap<String,Integer> staticIntegers; | |
| private static String decoderMethodSignature; | |
| private static boolean debug = false; | |
| @Override | |
| public void run(JebInstance jebInstance) { | |
| mJebInstance = jebInstance; | |
| mJebInstance.print("DexGuardDecoder_Start"); | |
| if (!mJebInstance.isFileLoaded()) { | |
| mJebInstance.print("Please load a dex file"); | |
| return; | |
| } | |
| Dex mDex = mJebInstance.getDex(); | |
| JavaView view = (JavaView) jebInstance.getUI().getView(View.Type.JAVA); | |
| String signature = view.getCodePosition().getSignature(); | |
| if (debug) mJebInstance.print(getClassFromSignature(signature)); | |
| Class mClass = mJebInstance.getDecompiledClassTree(getClassFromSignature(signature)); | |
| defineDecoderMethodSignature(mClass); | |
| if(!decoderMethodSignature.isEmpty()){ | |
| normalizeDecoderMethod(); | |
| initDecoderValues(mClass); | |
| for (Method mMethod : (List<Method>) mClass.getMethods()) { | |
| decodeMethod(mMethod); | |
| } | |
| } | |
| jebInstance.getUI().getView(View.Type.JAVA).refresh(); | |
| jebInstance.print("DexGuardStringDecoder_End"); | |
| } | |
| private static void defineDecoderMethodSignature(Class mClass){ | |
| for (Method mMethod : (List<Method>) mClass.getMethods()) { | |
| String mMethodSignature = mMethod.getSignature(); | |
| if(mMethod.isStatic() && Pattern.matches("^.*[(][IBS]{3}[)]Ljava[/]lang[/]String[;]$",mMethodSignature.split(">")[1])){ | |
| decoderMethodSignature = mMethodSignature; | |
| if (debug) mJebInstance.print("decoderMethodSignature = " + decoderMethodSignature); | |
| return; | |
| } | |
| } | |
| } | |
| private static void normalizeDecoderMethod(){ | |
| Method mMethod = mJebInstance.getDecompiledMethodTree(decoderMethodSignature); | |
| Block mMethodBodyBlock = mMethod.getBody(); | |
| int ifStmLine = 0; | |
| while(!(mMethodBodyBlock.get(ifStmLine) instanceof IfStm)){ | |
| ifStmLine++; | |
| if(ifStmLine == mMethodBodyBlock.size()){ | |
| return; | |
| } | |
| } | |
| Block mElseBlock = ((IfStm)mMethodBodyBlock.get(ifStmLine)).getDefaultBlock(); | |
| Block mWhileBlock = Block.build(); | |
| int labelLine = 0; | |
| while(!(mElseBlock.get(0) instanceof Label)){ | |
| mMethodBodyBlock.insert(ifStmLine + labelLine, mElseBlock.get(0)); | |
| mElseBlock.remove(0); | |
| labelLine++; | |
| } | |
| for (int i = 0; i < mElseBlock.size() - 1; i++) { | |
| if(mElseBlock.get(i+1) instanceof IfStm){ | |
| IfStm mIfStm = (IfStm) mElseBlock.get(i+1); | |
| Predicate mIfPredicate = mIfStm.getBranchPredicate(0); | |
| Block mIfIfBlock = mIfStm.getBranchBody(0); | |
| Block mIfElseBlock = mIfStm.getDefaultBlock(); | |
| mWhileBlock.insert(mWhileBlock.size(), IfStm.build(mIfPredicate,mIfIfBlock)); | |
| for (int k = 0; k < mIfElseBlock.size(); k++) { | |
| mWhileBlock.insert(mWhileBlock.size(), mIfElseBlock.get(k)); | |
| } | |
| } else { | |
| mWhileBlock.insert(mWhileBlock.size(), mElseBlock.get(i + 1)); | |
| } | |
| } | |
| int size = mMethodBodyBlock.size() - ifStmLine - labelLine - 2; | |
| for (int i = 0; i < size; i++) { | |
| mWhileBlock.insert(mWhileBlock.size(), mMethodBodyBlock.get(ifStmLine + labelLine + 1)); | |
| mMethodBodyBlock.remove(ifStmLine+labelLine + 1); | |
| } | |
| mMethodBodyBlock.remove(ifStmLine + labelLine + 1); | |
| IExpression mIExpression = new Constant.Builder(mJebInstance).buildInt(1); | |
| Predicate mTruePredicate = Predicate.build(mIExpression, Operator.EQ, mIExpression); | |
| WhileStm mWhileStm = WhileStm.build(mTruePredicate,mWhileBlock); | |
| mMethodBodyBlock.replaceSubElement(mMethodBodyBlock.get(ifStmLine+labelLine), mWhileStm); | |
| } | |
| private static void initDecoderValues(Class mClass) { | |
| staticByteArrays = new HashMap<String,byte[]>(); | |
| staticIntegers = new HashMap<String, Integer>(); | |
| for (Method mMethod : (List<Method>) mClass.getMethods()) { | |
| if (mMethod.getName().equals("<clinit>")) { | |
| Block clinitMethodBlock = mMethod.getBody(); | |
| for (int i = 0; i < clinitMethodBlock.size(); i++) { | |
| if(clinitMethodBlock.get(i) instanceof Assignment){ | |
| Assignment mAssignment = (Assignment) clinitMethodBlock.get(i); | |
| IExpression mLeftExpression = mAssignment.getLeft(); | |
| IExpression mRightExpression = mAssignment.getRight(); | |
| if(mLeftExpression instanceof StaticField) { | |
| StaticField mStaticField = (StaticField) mLeftExpression; | |
| if (mStaticField.getField().getType().equals("[B")) { | |
| byte[] b = getByteArrayValue(mRightExpression, staticIntegers, staticByteArrays); | |
| if (b == null){ | |
| mJebInstance.print("Incorrect static byte[] " + mStaticField.getField().getName() + " define - initDecoderValues"); | |
| return; | |
| } | |
| staticByteArrays.put(mStaticField.getField().getName(), b); | |
| if (debug) mJebInstance.print("static byte[] " + mStaticField.getField().getName()); | |
| } else if (mStaticField.getField().getType().equals("I") || mStaticField.getField().getType().equals("S") || mStaticField.getField().getType().equals("B")) { | |
| int a = getIntValueOfExpression(mRightExpression, staticIntegers, staticByteArrays); | |
| if(a == Integer.MIN_VALUE) { | |
| mJebInstance.print("Incorrect int " + mStaticField.getField().getName()); | |
| return; | |
| } | |
| staticIntegers.put(mStaticField.getField().getName(), a); | |
| if (debug) mJebInstance.print("static int " + mStaticField.getField().getName() + " = " + a); | |
| } | |
| } | |
| } | |
| } | |
| } | |
| } | |
| } | |
| private static void decodeMethod(Method mMethod){ | |
| if (debug) mJebInstance.print("Start decode " + mMethod.getSignature()); | |
| HashMap<String, Integer> intValues = new HashMap<String,Integer>(); | |
| intValues.putAll(staticIntegers); | |
| HashMap<String, byte[]> byteArrayValues = new HashMap<String, byte[]>(); | |
| byteArrayValues.putAll(staticByteArrays); | |
| for (int i = 0; i < mMethod.getBody().size(); i++){ | |
| if(!mMethod.getSignature().equals(decoderMethodSignature)) decodeIElement(mMethod.getBody().get(i), mMethod.getBody(), intValues, byteArrayValues, 1); | |
| } | |
| } | |
| public static String repeat(String str, int times){ | |
| return new String(new char[times]).replace("\0", str); | |
| } | |
| private static void decodeIElement(IElement mIElement, IElement mParentIElement, HashMap<String, Integer> intValues, HashMap<String, byte[]> byteArrayValues, int level){ | |
| if (debug) mJebInstance.print(repeat("\t", level) + "decodeIElement(" + mIElement.getClass().getName() + ", " + mParentIElement.getClass().getName() + ", ... )"); | |
| if (mIElement instanceof Definition && !(mParentIElement instanceof Assignment)) { | |
| Definition mDefinition = (Definition) mIElement; | |
| String type = mDefinition.getType(); | |
| if (type.equals("I") || type.equals("B") || type.equals("S")){ | |
| intValues.put(mDefinition.getIdentifier().getName(), Integer.MIN_VALUE); | |
| if (debug) mJebInstance.print("\t\tint " + mDefinition.getIdentifier().getName()); | |
| } | |
| } else if (mIElement instanceof Assignment){ | |
| Assignment mAssignment = (Assignment) mIElement; | |
| IExpression mLeftExpression = mAssignment.getLeft(); | |
| IExpression mRightExpression = mAssignment.getRight(); | |
| if (mAssignment.isSimpleAssignment()) { | |
| if (mLeftExpression instanceof Definition) { | |
| Definition mDefinition = (Definition) mLeftExpression; | |
| String type = mDefinition.getType(); | |
| if (type.equals("I") || type.equals("B") || type.equals("S")) { | |
| int val = getIntValueOfExpression(mRightExpression, intValues, byteArrayValues); | |
| if (val == Integer.MIN_VALUE) { | |
| mJebInstance.print("Incorrect mRightExpression int " + mDefinition.getIdentifier().getName() + " == " + val + " for SimpleAssignment - decodeIElement"); | |
| return; | |
| } | |
| intValues.put(mDefinition.getIdentifier().getName(), val); | |
| if (debug) | |
| mJebInstance.print("\t\tint " + mDefinition.getIdentifier().getName() + " = " + val); | |
| } /*else if (type.equals("[B")) { | |
| byte[] val = getByteArrayValue(mRightExpression, intValues, byteArrayValues); | |
| if (val == null) { | |
| mJebInstance.print("Incorrect mRightExpression byte[] " + mDefinition.getIdentifier().getName() + " == " + val + " for SimpleAssignment - decodeIElement"); | |
| return; | |
| } | |
| byteArrayValues.put(mDefinition.getIdentifier().getName(), val); | |
| if (debug) | |
| mJebInstance.print("\t\tbyte[] " + mDefinition.getIdentifier().getName() + " = " + Arrays.toString(val)); | |
| }*/ | |
| } else if (mLeftExpression instanceof Identifier) { | |
| Identifier mIdentifier = (Identifier) mLeftExpression; | |
| if (intValues.containsKey(mIdentifier.getName())) { | |
| int val = getIntValueOfExpression(mRightExpression, intValues, byteArrayValues); | |
| if (val == Integer.MIN_VALUE) { | |
| mJebInstance.print("Incorrect mRightExpression " + mIdentifier.getName() + " == " + val + " for SimpleAssignment - decodeIElement"); | |
| return; | |
| } | |
| intValues.put(mIdentifier.getName(), val); | |
| if (debug) mJebInstance.print("\t\t" + mIdentifier.getName() + " = " + val); | |
| } /*else if (byteArrayValues.containsKey(mIdentifier.getName())) { | |
| byte[] val = getByteArrayValue(mRightExpression, intValues, byteArrayValues); | |
| if (val == null) { | |
| mJebInstance.print("Incorrect mRightExpression " + mIdentifier.getName() + " == " + val + " for SimpleAssignment - decodeIElement"); | |
| return; | |
| } | |
| byteArrayValues.put(mIdentifier.getName(), val); | |
| if (debug) mJebInstance.print("\t\t" + mIdentifier.getName() + " = " + val); | |
| }*/ | |
| } /*else if (mLeftExpression instanceof ArrayElt) { | |
| ArrayElt mArrayElt = (ArrayElt) mLeftExpression; | |
| if (mArrayElt.getArray() instanceof Identifier) { | |
| String arrayName = ((Identifier) mArrayElt.getArray()).getName(); | |
| if (!byteArrayValues.containsKey(arrayName)) { | |
| mJebInstance.print("Unavailable byte[] " + arrayName + " for SimpleAssignment - decodeIElement"); | |
| return; | |
| } | |
| int position = getIntValueOfExpression(mArrayElt.getIndex(), intValues, byteArrayValues); | |
| if (position < 0 || position >= byteArrayValues.get(arrayName).length) { | |
| mJebInstance.print("Incorrect position " + position + " for SimpleAssignment - decodeIElement"); | |
| return; | |
| } | |
| byte[] result = byteArrayValues.get(arrayName); | |
| int val = getIntValueOfExpression(mRightExpression, intValues, byteArrayValues); | |
| if (val == Integer.MIN_VALUE) { | |
| mJebInstance.print("Incorrect mRightExpression " + arrayName + "[" + position + "] == " + val + " for SimpleAssignment - decodeIElement"); | |
| return; | |
| } | |
| result[position] = (byte) val; | |
| if (debug) mJebInstance.print("\t\t" + arrayName + "[" + position + "] = " + val); | |
| byteArrayValues.put(arrayName, result); | |
| } | |
| }*/ | |
| } else if (mAssignment.isCombinedOperatorAssignment()) { | |
| if (!(mLeftExpression instanceof Identifier)) { | |
| mJebInstance.print("Incorrect left IExpression type " + mLeftExpression.getClass().getName() + " for CombinedOperatorAssignment - decodeIElement"); | |
| return; | |
| } | |
| if (mRightExpression == null) { | |
| mJebInstance.print("Incorrect right IExpression " + mRightExpression.getClass().getName() + " == null for CombinedOperatorAssignment - decodeIElement"); | |
| return; | |
| } | |
| Identifier mIdentifier = (Identifier) mLeftExpression; | |
| if (intValues.containsKey(mIdentifier.getName())) { | |
| int val = getIntValueOfExpression(mRightExpression, intValues, byteArrayValues); | |
| if (val == Integer.MIN_VALUE) { | |
| mJebInstance.print("Incorrect mRightExpression int value " + val + " for CombinedOperatorAssignment - decodeIElement"); | |
| return; | |
| } | |
| Operator mOperator = mAssignment.getCombinedOperator(); | |
| if(mOperator.equals(Operator.ADD)){ | |
| int val2 = intValues.get(mIdentifier.getName()); | |
| if (debug) mJebInstance.print("\t\t" + mIdentifier.getName() + " += " + val); | |
| intValues.put(mIdentifier.getName(), val2 + val); | |
| } else if (mOperator.equals(Operator.SUB)){ | |
| int val2 = intValues.get(mIdentifier.getName()); | |
| if (debug) mJebInstance.print("\t\t" + mIdentifier.getName() + " -= " + val); | |
| intValues.put(mIdentifier.getName(), val2 - val); | |
| } else if (mOperator.equals(Operator.MUL)){ | |
| int val2 = intValues.get(mIdentifier.getName()); | |
| if (debug) mJebInstance.print("\t\t" + mIdentifier.getName() + " *= " + val); | |
| intValues.put(mIdentifier.getName(), val * val2); | |
| } | |
| } | |
| } else if (mAssignment.isUnaryOperatorAssignment()) { | |
| if (!(mLeftExpression instanceof Identifier)) { | |
| mJebInstance.print("Incorrect left IExpretion type " + mLeftExpression.getClass().getName() + " for UnaryOperatorAssignment - decodeIElement"); | |
| return; | |
| } | |
| if (mRightExpression != null) { | |
| mJebInstance.print("Incorrect right IExpretion " + mRightExpression.getClass().getName() + " != null for UnaryOperatorAssignment - decodeIElement"); | |
| return; | |
| } | |
| Identifier mIdentifier = (Identifier) mLeftExpression; | |
| if (intValues.containsKey(mIdentifier.getName())) { | |
| boolean[] unaryFlags = new boolean[2]; | |
| mAssignment.getUnaryOperator(unaryFlags); | |
| if (unaryFlags[0]) { | |
| intValues.put(mIdentifier.getName(), intValues.get(mIdentifier.getName()) + 1); | |
| if (debug) mJebInstance.print("\t\t" + mIdentifier.getName() + "++"); | |
| } else { | |
| intValues.put(mIdentifier.getName(), intValues.get(mIdentifier.getName()) - 1); | |
| if (debug) mJebInstance.print("\t\t" + mIdentifier.getName() + "--"); | |
| } | |
| } | |
| } | |
| } else if (mIElement instanceof Call) { | |
| Call mCall = (Call) mIElement; | |
| String methodSignature = mCall.getMethod().getSignature(); | |
| if(methodSignature.equals(decoderMethodSignature) && !(mParentIElement instanceof Block)){ | |
| List<IExpression> params = mCall.getArguments(); | |
| int param1 = getIntValueOfExpression(params.get(0),intValues,byteArrayValues); | |
| int param2 = getIntValueOfExpression(params.get(1),intValues,byteArrayValues); | |
| int param3 = getIntValueOfExpression(params.get(2),intValues,byteArrayValues); | |
| String result = decodeDexGuardString(param1,param2,param3); | |
| mJebInstance.print("decodeDexGuardString(" + param1 + ", " + param2 + ", " + param3 + ") = " + result); | |
| if(result != null) mParentIElement.replaceSubElement(mIElement, (new Constant.Builder(mJebInstance)).buildString(result)); | |
| else if (debug) return; | |
| } else { | |
| for(int i = 0; i < mIElement.getSubElements().size(); i++){ | |
| decodeIElement((IElement)mIElement.getSubElements().get(i), mIElement, intValues, byteArrayValues, level+1); | |
| } | |
| } | |
| } | |
| for (IElement element : (List<IElement>) mIElement.getSubElements()) { | |
| if (!((element instanceof Class) || (element instanceof Field) || (element instanceof Method))) { | |
| decodeIElement(element, mIElement, intValues, byteArrayValues, level + 1); | |
| } | |
| } | |
| } | |
| private static String decodeDexGuardString(int param1, int param2, int param3) { | |
| if (debug) mJebInstance.print("decodeDexGuardString(" + param1 + ", " + param2 + ", " + param3 + ")"); | |
| Method mMethod = mJebInstance.getDecompiledMethodTree(decoderMethodSignature); | |
| List<Definition> params = mMethod.getParameters(); | |
| Block mMethodBlock = mMethod.getBody(); | |
| HashMap<String, Integer> intValuesMap = new HashMap<String, Integer>(); | |
| intValuesMap.put(params.get(0).getIdentifier().getName(), param1); | |
| intValuesMap.put(params.get(1).getIdentifier().getName(), param2); | |
| intValuesMap.put(params.get(2).getIdentifier().getName(), param3); | |
| intValuesMap.putAll(staticIntegers); | |
| HashMap<String, byte[]> byteArrayValuesMap = new HashMap<String, byte[]>(); | |
| byteArrayValuesMap.putAll(staticByteArrays); | |
| for (int i = 0; i < mMethodBlock.size(); i++) { | |
| if (debug) mJebInstance.print(mMethodBlock.get(i).getClass().getName()); | |
| if(mMethodBlock.get(i) instanceof Definition){ | |
| Definition mDefinition = (Definition) mMethodBlock.get(i); | |
| String type = mDefinition.getType(); | |
| if (type.equals("I") || type.equals("B") || type.equals("S")){ | |
| intValuesMap.put(mDefinition.getIdentifier().getName(), Integer.MIN_VALUE); | |
| if (debug) mJebInstance.print("\t\tint " + mDefinition.getIdentifier().getName()); | |
| } else if (type.equals("[B")){ | |
| byteArrayValuesMap.put(mDefinition.getIdentifier().getName(), null); | |
| if (debug) mJebInstance.print("\t\tbyte[] " + mDefinition.getIdentifier().getName()); | |
| } else { | |
| mJebInstance.print("Unsupported Definition variable " + mDefinition.getIdentifier().getName() + " type \"" + type + "\" - decodeDexGuardString / Definition"); | |
| return null; | |
| } | |
| } else if (mMethodBlock.get(i) instanceof Assignment){ | |
| Assignment mAssignment = (Assignment) mMethodBlock.get(i); | |
| IExpression mLeftExpression = mAssignment.getLeft(); | |
| IExpression mRightExpression = mAssignment.getRight(); | |
| if (mAssignment.isSimpleAssignment()) { | |
| if (mLeftExpression instanceof Definition) { | |
| Definition mDefinition = (Definition) mLeftExpression; | |
| String type = mDefinition.getType(); | |
| if (type.equals("I") || type.equals("B") || type.equals("S")) { | |
| int val = getIntValueOfExpression(mRightExpression, intValuesMap, byteArrayValuesMap); | |
| if (val == Integer.MIN_VALUE) { | |
| mJebInstance.print("Incorrect mRightExpression int " + mDefinition.getIdentifier().getName() + " == " + val + " for SimpleAssignment - decodeDexGuardString / Assignment"); | |
| return null; | |
| } | |
| intValuesMap.put(mDefinition.getIdentifier().getName(), val); | |
| if (debug) | |
| mJebInstance.print("\t\tint " + mDefinition.getIdentifier().getName() + " = " + val); | |
| } else if (type.equals("[B")) { | |
| byte[] val = getByteArrayValue(mRightExpression, intValuesMap, byteArrayValuesMap); | |
| if (val == null) { | |
| mJebInstance.print("Incorrect mRightExpression byte[] " + mDefinition.getIdentifier().getName() + " == " + val + " for SimpleAssignment - decodeDexGuardString / Assignment"); | |
| return null; | |
| } | |
| byteArrayValuesMap.put(mDefinition.getIdentifier().getName(), val); | |
| if (debug) | |
| mJebInstance.print("\t\tbyte[] " + mDefinition.getIdentifier().getName() + " = " + Arrays.toString(val)); | |
| } else { | |
| mJebInstance.print("Unsupported Definition variable " + mDefinition.getIdentifier().getName() + " type \"" + type + "\" - decodeDexGuardString / Definition"); | |
| return null; | |
| } | |
| } else if (mLeftExpression instanceof Identifier) { | |
| Identifier mIdentifier = (Identifier) mLeftExpression; | |
| if (intValuesMap.containsKey(mIdentifier.getName())) { | |
| int val = getIntValueOfExpression(mRightExpression, intValuesMap, byteArrayValuesMap); | |
| if (val == Integer.MIN_VALUE) { | |
| mJebInstance.print("Incorrect mRightExpression " + mIdentifier.getName() + " == " + val + " for SimpleAssignment - decodeDexGuardString / Assignment"); | |
| return null; | |
| } | |
| intValuesMap.put(mIdentifier.getName(), val); | |
| if (debug) mJebInstance.print("\t\t" + mIdentifier.getName() + " = " + val); | |
| } else if (byteArrayValuesMap.containsKey(mIdentifier.getName())) { | |
| byte[] val = getByteArrayValue(mRightExpression, intValuesMap, byteArrayValuesMap); | |
| if (val == null) { | |
| mJebInstance.print("Incorrect mRightExpression " + mIdentifier.getName() + " == " + val + " for SimpleAssignment - decodeDexGuardString / Assignment"); | |
| return null; | |
| } | |
| byteArrayValuesMap.put(mIdentifier.getName(), val); | |
| if (debug) mJebInstance.print("\t\t" + mIdentifier.getName() + " = " + val); | |
| } else { | |
| mJebInstance.print("Unknown variable " + mIdentifier.getName() + " type - decodeDexGuardString / Definition"); | |
| return null; | |
| } | |
| } else if (mLeftExpression instanceof ArrayElt) { | |
| ArrayElt mArrayElt = (ArrayElt) mLeftExpression; | |
| if(mArrayElt.getArray() instanceof Identifier) { | |
| String arrayName = ((Identifier)mArrayElt.getArray()).getName(); | |
| if(!byteArrayValuesMap.containsKey(arrayName)){ | |
| mJebInstance.print("Unavailable byte[] " + arrayName + " for SimpleAssignment - decodeDexGuardString / Assignment / ArrayElt"); | |
| return null; | |
| } | |
| int position = getIntValueOfExpression(mArrayElt.getIndex(), intValuesMap, byteArrayValuesMap); | |
| if(position < 0 || position >= byteArrayValuesMap.get(arrayName).length){ | |
| mJebInstance.print("Incorrect position " + position + " for SimpleAssignment - decodeDexGuardString / Assignment / ArrayElt"); | |
| return null; | |
| } | |
| byte[] result = byteArrayValuesMap.get(arrayName); | |
| int val = getIntValueOfExpression(mRightExpression, intValuesMap, byteArrayValuesMap); | |
| if (val == Integer.MIN_VALUE) { | |
| mJebInstance.print("Incorrect mRightExpression " + arrayName + "[" + position + "] == " + val + " for SimpleAssignment - decodeDexGuardString / Assignment"); | |
| return null; | |
| } | |
| result[position] = (byte) val; | |
| if (debug) mJebInstance.print("\t\t" + arrayName + "[" + position + "] = " + val); | |
| byteArrayValuesMap.put(arrayName, result); | |
| } else { | |
| mJebInstance.print("Incorrect Array IExpression type " + mArrayElt.getArray().getClass().getName() + " for SimpleAssignment - decodeDexGuardString / Assignment / ArrayElt"); | |
| return null; | |
| } | |
| } else { | |
| mJebInstance.print("Incorrect left IExpression type " + mLeftExpression.getClass().getName() + " for SimpleAssignment - decodeDexGuardString / Assignment"); | |
| return null; | |
| } | |
| } else if (mAssignment.isCombinedOperatorAssignment()){ | |
| if(!(mLeftExpression instanceof Identifier)){ | |
| mJebInstance.print("Incorrect left IExpression type " + mLeftExpression.getClass().getName() + " for CombinedOperatorAssignment - decodeDexGuardString / Assignment"); | |
| return null; | |
| } | |
| if(mRightExpression == null){ | |
| mJebInstance.print("Incorrect right IExpression " + mRightExpression.getClass().getName() + " == null for CombinedOperatorAssignment - decodeDexGuardString / Assignment"); | |
| return null; | |
| } | |
| Identifier mIdentifier = (Identifier) mLeftExpression; | |
| if(!intValuesMap.containsKey(mIdentifier.getName())){ | |
| mJebInstance.print("Unavailable int " + mIdentifier.getName() + " for CombinedOperatorAssignment - decodeDexGuardString / Assignment"); | |
| return null; | |
| } | |
| int val = getIntValueOfExpression(mRightExpression, intValuesMap, byteArrayValuesMap); | |
| if(val == Integer.MIN_VALUE){ | |
| mJebInstance.print("Incorrect mRightExpression int value " + val + " for CombinedOperatorAssignment - decodeDexGuardString / Assignment"); | |
| return null; | |
| } | |
| Operator mOperator = mAssignment.getCombinedOperator(); | |
| if(mOperator.equals(Operator.ADD)){ | |
| int val2 = intValuesMap.get(mIdentifier.getName()); | |
| if (debug) mJebInstance.print("\t\t" + mIdentifier.getName() + " += " + val); | |
| intValuesMap.put(mIdentifier.getName(), val2 + val); | |
| } else if (mOperator.equals(Operator.SUB)){ | |
| int val2 = intValuesMap.get(mIdentifier.getName()); | |
| if (debug) mJebInstance.print("\t\t" + mIdentifier.getName() + " -= " + val); | |
| intValuesMap.put(mIdentifier.getName(), val2 - val); | |
| } else if (mOperator.equals(Operator.MUL)){ | |
| int val2 = intValuesMap.get(mIdentifier.getName()); | |
| if (debug) mJebInstance.print("\t\t" + mIdentifier.getName() + " *= " + val); | |
| intValuesMap.put(mIdentifier.getName(), val * val2); | |
| } else { | |
| mJebInstance.print("Unsopported combinedOperator type \"" + mOperator.toString() + "=\" for CombinedOperatorAssignment - decodeDexGuardString / Assignment"); | |
| return null; | |
| } | |
| } else if (mAssignment.isUnaryOperatorAssignment()){ | |
| if(!(mLeftExpression instanceof Identifier)){ | |
| mJebInstance.print("Incorrect left IExpretion type " + mLeftExpression.getClass().getName() + " for UnaryOperatorAssignment - decodeDexGuardString / Assignment"); | |
| return null; | |
| } | |
| if(mRightExpression != null){ | |
| mJebInstance.print("Incorrect right IExpretion " + mRightExpression.getClass().getName() + " != null for UnaryOperatorAssignment - decodeDexGuardString / Assignment"); | |
| return null; | |
| } | |
| Identifier mIdentifier = (Identifier) mLeftExpression; | |
| if(!intValuesMap.containsKey(mIdentifier.getName())){ | |
| mJebInstance.print("Unavailable int " + mIdentifier.getName() + " - decodeDexGuardString / Assignment"); | |
| return null; | |
| } | |
| boolean[] unaryFlags = new boolean[2]; | |
| mAssignment.getUnaryOperator(unaryFlags); | |
| if(unaryFlags[0]){ | |
| intValuesMap.put(mIdentifier.getName(), intValuesMap.get(mIdentifier.getName()) + 1); | |
| if (debug) mJebInstance.print("\t\t" + mIdentifier.getName() + "++"); | |
| } else { | |
| intValuesMap.put(mIdentifier.getName(), intValuesMap.get(mIdentifier.getName()) - 1); | |
| if (debug) mJebInstance.print("\t\t" + mIdentifier.getName() + "--"); | |
| } | |
| } else { | |
| mJebInstance.print("Incorrect type Assignment - decodeDexGuardString"); | |
| } | |
| } else if (mMethodBlock.get(i) instanceof WhileStm){ | |
| WhileStm mWhileStm = (WhileStm)mMethodBlock.get(i); | |
| Block mWhileBlock = mWhileStm.getBody(); | |
| int controller = 0; | |
| while (controller < 70) { | |
| controller++; | |
| for (int j = 0; j < mWhileBlock.size(); j++) { | |
| if (debug) mJebInstance.print("\t\t\t\t"+ mWhileBlock.get(j).getClass().getName()); | |
| if(mWhileBlock.get(j) instanceof Definition){ | |
| Definition mDefinition = (Definition) mWhileBlock.get(j); | |
| String type = mDefinition.getType(); | |
| if (type.equals("I") || type.equals("B") || type.equals("S")){ | |
| intValuesMap.put(mDefinition.getIdentifier().getName(), Integer.MIN_VALUE); | |
| if (debug) mJebInstance.print("\t\t\t\t\t\tint " + mDefinition.getIdentifier().getName()); | |
| } else if (type.equals("[B")){ | |
| byteArrayValuesMap.put(mDefinition.getIdentifier().getName(), null); | |
| if (debug) mJebInstance.print("\t\t\t\t\t\tbyte[] " + mDefinition.getIdentifier().getName()); | |
| } else { | |
| mJebInstance.print("Unsupported Definition variable " + mDefinition.getIdentifier().getName() + " type \"" + type + "\" - decodeDexGuardString / Definition"); | |
| return null; | |
| } | |
| } else if (mWhileBlock.get(j) instanceof Assignment){ | |
| Assignment mAssignment = (Assignment) mWhileBlock.get(j); | |
| IExpression mLeftExpression = mAssignment.getLeft(); | |
| IExpression mRightExpression = mAssignment.getRight(); | |
| if (mAssignment.isSimpleAssignment()){ | |
| if(mLeftExpression instanceof Definition){ | |
| Definition mDefinition = (Definition) mLeftExpression; | |
| String type = mDefinition.getType(); | |
| if (type.equals("I") || type.equals("B") || type.equals("S")){ | |
| int val = getIntValueOfExpression(mRightExpression, intValuesMap, byteArrayValuesMap); | |
| if (val == Integer.MIN_VALUE) { | |
| mJebInstance.print("Incorrect mRightExpression int " + mDefinition.getIdentifier().getName() + " == " + val + " for SimpleAssignment - decodeDexGuardString / Assignment"); | |
| return null; | |
| } | |
| intValuesMap.put(mDefinition.getIdentifier().getName(), val); | |
| if (debug) mJebInstance.print("\t\t\t\t\t\tint " + mDefinition.getIdentifier().getName() + " = " + val); | |
| } else if (type.equals("[B")){ | |
| byte[] val = getByteArrayValue(mRightExpression, intValuesMap, byteArrayValuesMap); | |
| if (val == null) { | |
| mJebInstance.print("Incorrect mRightExpression byte[] " + mDefinition.getIdentifier().getName() + " == " + val + " for SimpleAssignment - decodeDexGuardString / Assignment"); | |
| return null; | |
| } | |
| byteArrayValuesMap.put(mDefinition.getIdentifier().getName(), val); | |
| if (debug) mJebInstance.print("\t\t\t\t\t\tbyte[] " + mDefinition.getIdentifier().getName() + " = " + Arrays.toString(val)); | |
| } else { | |
| mJebInstance.print("Unsupported Definition variable " + mDefinition.getIdentifier().getName() + " type \"" + type + "\" - decodeDexGuardString / Definition"); | |
| return null; | |
| } | |
| } else if (mLeftExpression instanceof Identifier) { | |
| Identifier mIdentifier = (Identifier) mLeftExpression; | |
| if (intValuesMap.containsKey(mIdentifier.getName())){ | |
| int val = getIntValueOfExpression(mRightExpression, intValuesMap, byteArrayValuesMap); | |
| if (val == Integer.MIN_VALUE) { | |
| mJebInstance.print("Incorrect mRightExpression " + mIdentifier.getName() + " == " + val + " for SimpleAssignment - decodeDexGuardString / Assignment"); | |
| return null; | |
| } | |
| intValuesMap.put(mIdentifier.getName(), val); | |
| if (debug) mJebInstance.print("\t\t\t\t\t\t" + mIdentifier.getName() + " = " + val); | |
| } else if (byteArrayValuesMap.containsKey(mIdentifier.getName())){ | |
| byte[] val = getByteArrayValue(mRightExpression, intValuesMap, byteArrayValuesMap); | |
| if (val == null) { | |
| mJebInstance.print("Incorrect mRightExpression " + mIdentifier.getName() + " == " + val + " for SimpleAssignment - decodeDexGuardString / Assignment"); | |
| return null; | |
| } | |
| byteArrayValuesMap.put(mIdentifier.getName(), val); | |
| if (debug) mJebInstance.print("\t\t\t\t\t\t" + mIdentifier.getName() + " = " + val); | |
| } else { | |
| mJebInstance.print("Unknown variable " + mIdentifier.getName() + " type - decodeDexGuardString / Definition"); | |
| return null; | |
| } | |
| } else if (mLeftExpression instanceof ArrayElt) { | |
| ArrayElt mArrayElt = (ArrayElt) mLeftExpression; | |
| if(mArrayElt.getArray() instanceof Identifier) { | |
| String arrayName = ((Identifier)mArrayElt.getArray()).getName(); | |
| if(!byteArrayValuesMap.containsKey(arrayName)){ | |
| mJebInstance.print("Unavailable byte[] " + arrayName + " for SimpleAssignment - decodeDexGuardString / Assignment / ArrayElt"); | |
| return null; | |
| } | |
| int position = getIntValueOfExpression(mArrayElt.getIndex(), intValuesMap, byteArrayValuesMap); | |
| if(position < 0 || position >= byteArrayValuesMap.get(arrayName).length){ | |
| mJebInstance.print("Incorrect position " + position + " for SimpleAssignment - decodeDexGuardString / Assignment / ArrayElt"); | |
| return null; | |
| } | |
| byte[] result = byteArrayValuesMap.get(arrayName); | |
| int val = getIntValueOfExpression(mRightExpression, intValuesMap, byteArrayValuesMap); | |
| if (val == Integer.MIN_VALUE) { | |
| mJebInstance.print("Incorrect mRightExpression " + arrayName + "[" + position + "] == " + val + " for SimpleAssignment - decodeDexGuardString / Assignment"); | |
| return null; | |
| } | |
| result[position] = (byte) val; | |
| if (debug) mJebInstance.print("\t\t" + arrayName + "[" + position + "] = " + val); | |
| byteArrayValuesMap.put(arrayName, result); | |
| } else { | |
| mJebInstance.print("Incorrect Array IExpression type " + mArrayElt.getArray().getClass().getName() + " for SimpleAssignment - decodeDexGuardString / Assignment / ArrayElt"); | |
| return null; | |
| } | |
| } else { | |
| mJebInstance.print("Incorrect left IExpression type " + mLeftExpression.getClass().getName() + " for SimpleAssignment - decodeDexGuardString / Assignment"); | |
| return null; | |
| } | |
| } else if (mAssignment.isCombinedOperatorAssignment()){ | |
| if(!(mLeftExpression instanceof Identifier)){ | |
| mJebInstance.print("Incorrect left IExpression type " + mLeftExpression.getClass().getName() + " for CombinedOperatorAssignment - decodeDexGuardString / Assignment"); | |
| return null; | |
| } | |
| if(mRightExpression == null){ | |
| mJebInstance.print("Incorrect right IExpression " + mRightExpression.getClass().getName() + " == null for CombinedOperatorAssignment - decodeDexGuardString / Assignment"); | |
| return null; | |
| } | |
| Identifier mIdentifier = (Identifier) mLeftExpression; | |
| if(!intValuesMap.containsKey(mIdentifier.getName())){ | |
| mJebInstance.print("Unavailable int " + mIdentifier.getName() + " for CombinedOperatorAssignment - decodeDexGuardString / Assignment"); | |
| return null; | |
| } | |
| int val = getIntValueOfExpression(mRightExpression, intValuesMap, byteArrayValuesMap); | |
| if(val == Integer.MIN_VALUE){ | |
| mJebInstance.print("Incorrect mRightExpression int value " + val + " for CombinedOperatorAssignment - decodeDexGuardString / Assignment"); | |
| return null; | |
| } | |
| Operator mOperator = mAssignment.getCombinedOperator(); | |
| if(mOperator.equals(Operator.ADD)){ | |
| int val2 = intValuesMap.get(mIdentifier.getName()); | |
| if (debug) mJebInstance.print("\t\t" + mIdentifier.getName() + " += " + val); | |
| intValuesMap.put(mIdentifier.getName(), val2 + val); | |
| } else if (mOperator.equals(Operator.SUB)){ | |
| int val2 = intValuesMap.get(mIdentifier.getName()); | |
| if (debug) mJebInstance.print("\t\t" + mIdentifier.getName() + " -= " + val); | |
| intValuesMap.put(mIdentifier.getName(), val2 - val); | |
| } else if (mOperator.equals(Operator.MUL)){ | |
| int val2 = intValuesMap.get(mIdentifier.getName()); | |
| if (debug) mJebInstance.print("\t\t" + mIdentifier.getName() + " *= " + val); | |
| intValuesMap.put(mIdentifier.getName(), val * val2); | |
| } else { | |
| mJebInstance.print("Unsopported combinedOperator type \"" + mOperator.toString() + "=\" for CombinedOperatorAssignment - decodeDexGuardString / Assignment"); | |
| return null; | |
| } | |
| } else if (mAssignment.isUnaryOperatorAssignment()){ | |
| if(!(mLeftExpression instanceof Identifier)){ | |
| mJebInstance.print("Incorrect left IExpretion type " + mLeftExpression.getClass().getName() + " for UnaryOperatorAssignment - decodeDexGuardString / Assignment"); | |
| return null; | |
| } | |
| if(mRightExpression != null){ | |
| mJebInstance.print("Incorrect right IExpretion " + mRightExpression.getClass().getName() + " != null for UnaryOperatorAssignment - decodeDexGuardString / Assignment"); | |
| return null; | |
| } | |
| Identifier mIdentifier = (Identifier) mLeftExpression; | |
| if(!intValuesMap.containsKey(mIdentifier.getName())){ | |
| mJebInstance.print("Unavailable int " + mIdentifier.getName() + " - decodeDexGuardString / Assignment"); | |
| return null; | |
| } | |
| boolean[] unaryFlags = new boolean[2]; | |
| mAssignment.getUnaryOperator(unaryFlags); | |
| if(unaryFlags[0]){ | |
| intValuesMap.put(mIdentifier.getName(), intValuesMap.get(mIdentifier.getName()) + 1); | |
| if (debug) mJebInstance.print("\t\t\t\t\t\t" + mIdentifier.getName() + "++"); | |
| } else { | |
| intValuesMap.put(mIdentifier.getName(), intValuesMap.get(mIdentifier.getName()) - 1); | |
| if (debug) mJebInstance.print("\t\t\t\t\t\t" + mIdentifier.getName() + "--"); | |
| } | |
| } else { | |
| mJebInstance.print("Incorrect type Assignment - decodeDexGuardString"); | |
| } | |
| } else if (mWhileBlock.get(j) instanceof IfStm){ | |
| IfStm mIfStm = (IfStm) mWhileBlock.get(j); | |
| Predicate mPredicate = mIfStm.getBranchPredicate(0); | |
| String lVarName = ((Identifier) mPredicate.getLeft()).getName(); | |
| String rVarName = ((Identifier) mPredicate.getRight()).getName(); | |
| Block ifBlock = mIfStm.getBranchBody(0); | |
| if(intValuesMap.get(lVarName).equals(intValuesMap.get(rVarName))){ | |
| String resultByteArray = ""; | |
| for (int k = 0; k < ifBlock.size(); k++) { | |
| if(ifBlock.get(k) instanceof Return){ | |
| Return mReturn = (Return) ifBlock.get(k); | |
| if(mReturn.getExpression() instanceof New){ | |
| New mNew = (New) mReturn.getExpression(); | |
| List args = mNew.getArguments(); | |
| if (args.size() > 0 && args.get(0) instanceof Identifier) { | |
| Identifier mIdentifier = (Identifier) args.get(0); | |
| resultByteArray = mIdentifier.getName(); | |
| } else { | |
| mJebInstance.print("String init params incorrect"); | |
| return null; | |
| } | |
| } else if (mReturn.getExpression() instanceof Call) { | |
| Call mCall = (Call) mReturn.getExpression(); | |
| List<IExpression> par = mCall.getArguments(); | |
| if(par.size() <= 0) { | |
| mJebInstance.print("Unavailable String Creater"); | |
| return null; | |
| } | |
| if (par.get(0) instanceof New) { | |
| New mNew = (New) par.get(0); | |
| List args = mNew.getArguments(); | |
| if (args.size() > 0 && args.get(0) instanceof Identifier) { | |
| Identifier mIdentifier = (Identifier) args.get(0); | |
| resultByteArray = mIdentifier.getName(); | |
| } else { | |
| mJebInstance.print("String init params incorrect"); | |
| return null; | |
| } | |
| } else { | |
| mJebInstance.print("Unavailable String Creater in Call"); | |
| return null; | |
| } | |
| } else { | |
| mJebInstance.print("Incorrect Return Expression " + mReturn.getExpression().getClass().getName()); | |
| return null; | |
| } | |
| } else { | |
| mJebInstance.print("Statement is not Return (" + ifBlock.get(k).getClass().getName() + ")"); | |
| return null; | |
| } | |
| } | |
| //mJebInstance.print("t4 - " + resultByteArray + " = " + Arrays.toString(byteArrayValuesMap.get(resultByteArray)) + " " + new String(byteArrayValuesMap.get(resultByteArray))); | |
| return new String(byteArrayValuesMap.get(resultByteArray)); | |
| } | |
| } else { | |
| mJebInstance.print("Unsupported Statement type " + mWhileBlock.get(j).getClass().getName() + " - decodeDexGuardString / Assignment"); | |
| return null; | |
| } | |
| } | |
| } | |
| } else { | |
| mJebInstance.print("Unsupported Statement type " + mMethodBlock.get(i).getClass().getName() + " - decodeDexGuardString / Assignment"); | |
| return null; | |
| } | |
| } | |
| return ""; | |
| } | |
| private static byte[] getByteArrayValue(IExpression mIExpression, HashMap<String,Integer> intValues, HashMap<String, byte[]> byteArrayValues){ | |
| if (debug) mJebInstance.print("\t\t\t\t\t\t\t\tgetByteArrayValue for " + mIExpression.getClass().getName()); | |
| if (mIExpression instanceof Call) { | |
| //TODO | |
| mJebInstance.print("Unsupported IExpression parametr type - getByteArrayValue of Call"); | |
| return null; | |
| } else if (mIExpression instanceof Identifier) { | |
| Identifier mIdentifier = (Identifier) mIExpression; | |
| if(!byteArrayValues.containsKey(mIdentifier.getName())) { | |
| mJebInstance.print("Unavailable byte[] " + mIdentifier.getName() + " - getByteArrayValue of Identifier"); | |
| return null; | |
| } | |
| return byteArrayValues.get(mIdentifier.getName()); | |
| } else if (mIExpression instanceof InstanceField) { | |
| //TODO | |
| mJebInstance.print("Unsupported IExpression parametr type - getByteArrayValue of InstanceField"); | |
| return null; | |
| } else if (mIExpression instanceof NewArray) { | |
| NewArray mNewArray = (NewArray) mIExpression; | |
| if(!mNewArray.getType().equals("[B")){ | |
| mJebInstance.print("Unsupported NewArray type " + mNewArray.getType() + " - getByteArrayValue of NewArray"); | |
| return null; | |
| } | |
| if(mNewArray.getInitialValues() != null){ | |
| List<Constant> initialValues = mNewArray.getInitialValues(); | |
| if(initialValues.isEmpty()){ | |
| return null; | |
| } | |
| byte[] rezult = new byte[initialValues.size()]; | |
| for (int i = 0; i < initialValues.size(); i++) { | |
| rezult[i] = initialValues.get(i).getByte(); | |
| } | |
| return rezult; | |
| } else if (mNewArray.getSizes() != null) { | |
| if (mNewArray.getSizes().size() > 1) { | |
| mJebInstance.print("Unsupported NewArray multiSizes array " + mNewArray.getSizes().size() + " - getByteArrayValue of NewArray"); | |
| return null; | |
| } | |
| IExpression mSizeIExpression = (IExpression) mNewArray.getSizes().get(0); | |
| int sizeArray = getIntValueOfExpression(mSizeIExpression, intValues, byteArrayValues); | |
| if (sizeArray < 0) { | |
| mJebInstance.print("Incorrect array size " + sizeArray + " - getByteArrayValue of NewArray"); | |
| return null; | |
| } | |
| return new byte[sizeArray]; | |
| } else { | |
| mJebInstance.print("Error - getByteArrayValue of NewArray"); | |
| return null; | |
| } | |
| } else if (mIExpression instanceof StaticField) { | |
| StaticField mStaticField = (StaticField) mIExpression; | |
| String fType = mStaticField.getField().getType(); | |
| if(!fType.equals("[B")){ | |
| mJebInstance.print("Incorrect StaticField type " + fType + " - getByteArrayValue of StaticField"); | |
| return null; | |
| } | |
| if(!byteArrayValues.containsKey(mStaticField.getField().getName())){ | |
| mJebInstance.print("Unavailable byte[] " + mStaticField.getField().getName() + " - getByteArrayValue of StaticField"); | |
| return null; | |
| } | |
| return byteArrayValues.get(mStaticField.getField().getName()); | |
| } else { | |
| mJebInstance.print("Unsupported IExpression parametr type - getByteArrayValue of " + mIExpression.getClass().getName()); | |
| return null; | |
| } | |
| } | |
| private static int getIntValueOfExpression(IExpression mIExpression, HashMap<String, Integer> intValues, HashMap<String,byte[]> byteArrayValues) { | |
| if (debug) mJebInstance.print("\t\t\t\t\t\t\t\tgetIntValueOfExpression for " + mIExpression.getClass().getName()); | |
| if(mIExpression instanceof ArrayElt){ | |
| ArrayElt mArrayElt = (ArrayElt) mIExpression; | |
| if(!(mArrayElt.getArray() instanceof Identifier || mArrayElt.getArray() instanceof StaticField)){ | |
| mJebInstance.print("Unsupported type of Array " + mArrayElt.getArray().getClass().getName() + " - getIntValueOfExpression of ArrayElt"); | |
| return Integer.MIN_VALUE; | |
| } | |
| String byteArrayName = (mArrayElt.getArray() instanceof Identifier) ? ((Identifier)mArrayElt.getArray()).getName() : ((StaticField)mArrayElt.getArray()).getField().getName(); | |
| if(!byteArrayValues.containsKey(byteArrayName)){ | |
| mJebInstance.print("Unavailable byteArray " + byteArrayName + " - getIntValueOfExpression of ArrayElt"); | |
| return Integer.MIN_VALUE; | |
| } | |
| byte[] mBytes = byteArrayValues.get(byteArrayName); | |
| int position = getIntValueOfExpression(mArrayElt.getIndex(), intValues, byteArrayValues); | |
| if(mBytes.length <= position){ | |
| mJebInstance.print("Incorrect position (byte[].length " + mBytes.length + " <= position " + position + ") - getIntValueOfExpression of ArrayElt"); | |
| return Integer.MIN_VALUE; | |
| } else if (position < 0){ | |
| mJebInstance.print("Incorrect position (position " + position + " < 0) - getIntValueOfExpression of ArrayElt"); | |
| return Integer.MIN_VALUE; | |
| } | |
| return mBytes[position]; | |
| } else if (mIExpression instanceof Call) { | |
| //TODO | |
| mJebInstance.print("Unsupported IExpression parametr type - getIntValueOfExpression of Call"); | |
| return Integer.MIN_VALUE; | |
| } else if (mIExpression instanceof Constant) { | |
| Constant mConstant = (Constant) mIExpression; | |
| if(mConstant.isFalse() || mConstant.isNull() || mConstant.isTrue() || mConstant.isString()){ | |
| mJebInstance.print("Unsupported type of Constant - getIntValueOfExpression of Constant"); | |
| return Integer.MIN_VALUE; | |
| } | |
| String type = ((Constant) mIExpression).getType(); | |
| if(type.equals("B")){ | |
| return (int) ((Constant) mIExpression).getByte(); | |
| } else if (type.equals("S")){ | |
| return (int) ((Constant) mIExpression).getShort(); | |
| } else { | |
| return ((Constant) mIExpression).getInt(); | |
| } | |
| } else if (mIExpression instanceof Expression) { | |
| Expression mExpression = (Expression) mIExpression; | |
| int lValue = Integer.MIN_VALUE; | |
| if(mExpression.getLeft() != null) { | |
| lValue = getIntValueOfExpression(mExpression.getLeft(), intValues, byteArrayValues); | |
| if (lValue == Integer.MIN_VALUE) { | |
| mJebInstance.print("Incorrect lValue " + lValue + " - getIntValueOfExpression of Expression"); | |
| return Integer.MIN_VALUE; | |
| } | |
| } | |
| int rValue = getIntValueOfExpression(mExpression.getRight(), intValues, byteArrayValues); | |
| if (rValue == Integer.MIN_VALUE) { | |
| mJebInstance.print("Incorrect rValue " + rValue + " - getIntValueOfExpression of Expression"); | |
| return Integer.MIN_VALUE; | |
| } | |
| Operator mOperator = mExpression.getOperator(); | |
| if(mOperator.equals(Operator.ADD)){ | |
| return lValue + rValue; | |
| } else if (mOperator.equals(Operator.SUB)){ | |
| return lValue - rValue; | |
| } else if (mOperator.equals(Operator.MUL)){ | |
| return lValue * rValue; | |
| } else if (mOperator.equals(Operator.DIV)){ | |
| return lValue / rValue; | |
| } else if (mOperator.equals(Operator.REM)){ | |
| return lValue % rValue; | |
| } else if (mOperator.equals(Operator.OR)){ | |
| return lValue | rValue; | |
| } else if (mOperator.equals(Operator.AND)){ | |
| return lValue & rValue; | |
| } else if (mOperator.equals(Operator.XOR)){ | |
| return lValue ^ rValue; | |
| } else if (mOperator.equals(Operator.SHL)){ | |
| return lValue << rValue; | |
| } else if (mOperator.equals(Operator.SHR)){ | |
| return lValue >> rValue; | |
| } else if (mOperator.equals(Operator.USHR)){ | |
| return lValue >>> rValue; | |
| } else if (mOperator.equals(Operator.NEG)) { | |
| return -rValue; | |
| } else if (mOperator.equals(Operator.CAST_TO_BYTE)) { | |
| return rValue; | |
| } else if (mOperator.equals(Operator.CAST_TO_SHORT)) { | |
| return rValue; | |
| } else if (mOperator.equals(Operator.CAST_TO_INT)) { | |
| return rValue; | |
| } else { | |
| mJebInstance.print("Unsupported operation type \"" + mOperator.toString() + "\" - getIntValueOfExpression of Expression"); | |
| return Integer.MIN_VALUE; | |
| } | |
| } else if (mIExpression instanceof Identifier) { | |
| Identifier mIdentifier = (Identifier) mIExpression; | |
| if(!intValues.containsKey(mIdentifier.getName())){ | |
| mJebInstance.print("intValues.keys = " + Arrays.toString(intValues.keySet().toArray())); | |
| mJebInstance.print("Unavailable int " + mIdentifier.getName() + " - getIntValueOfExpression of Identifier"); | |
| return Integer.MIN_VALUE; | |
| } | |
| return intValues.get(mIdentifier.getName()); | |
| } else if (mIExpression instanceof InstanceField) { | |
| //TODO | |
| mJebInstance.print("Unsupported IExpression parametr type - getIntValueOfExpression of InstanceField"); | |
| return Integer.MIN_VALUE; | |
| } else if (mIExpression instanceof StaticField) { | |
| StaticField mStaticField = (StaticField) mIExpression; | |
| String fType = mStaticField.getField().getType(); | |
| if(!(fType.equals("I") || fType.equals("B") || fType.equals("S") )){ | |
| mJebInstance.print("Incorrect StaticField type " + fType + " - getIntValueOfExpression of StaticField"); | |
| return Integer.MIN_VALUE; | |
| } | |
| if(!intValues.containsKey(mStaticField.getField().getName())){ | |
| mJebInstance.print("Unavailable int " + mStaticField.getField().getName() + " - getIntValueOfExpression of StaticField"); | |
| return Integer.MIN_VALUE; | |
| } | |
| return intValues.get(mStaticField.getField().getName()); | |
| } else { | |
| mJebInstance.print("Unsupported IExpression parametr type - getIntValueOfExpression of " + mIExpression.getClass().getName()); | |
| return Integer.MIN_VALUE; | |
| } | |
| } | |
| private static String getClassFromSignature(String signature){ | |
| String pattern = "^(L[a-zA-Z/$]*[;])(.*)$"; | |
| return signature.replaceAll(pattern, "$1"); | |
| } | |
| } |
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@jumbofreak && @virqdroid:
Can we download these APKs? Or could you upload them somewhere?
The script does work with some versions of DexGuard.