Examples with MethodNode org.mapleir.asm.MethodNode used on opensource projects

Example 31 with MethodNode

use of org.mapleir.asm.MethodNode in project maple-ir by LLVM-but-worse.

the class ClassPrinter method print.

public static String print(ClassNode cn) {
    StringBuilder sb = new StringBuilder();
    printModifiers(sb, cn.node.access);
    sb.append(cn.getName()).append(" extends ").append(cn.node.superName).append(" ");
    if (cn.node.interfaces.size() > 0) {
        sb.append("implements ");
        Iterator<String> it = cn.node.interfaces.iterator();
        while (it.hasNext()) {
            String intf = it.next();
            sb.append(intf);
            if (it.hasNext())
                sb.append(",");
            sb.append(" ");
        }
    }
    sb.append("{").append("\n");
    sb.append("\n");
    for (FieldNode f : cn.getFields()) {
        sb.append("    ");
        printModifiers(sb, f.node.access);
        sb.append(f.getName()).append(" ").append(f.getDesc()).append("\n");
    }
    sb.append("\n");
    for (MethodNode m : cn.getMethods()) {
        sb.append("    ");
        printModifiers(sb, m.node.access);
        sb.append(m.getName()).append(" ").append(m.getDesc()).append(" {").append("\n");
        for (String s : InstructionPrinter.getLines(m.node)) {
            sb.append("       ").append(s).append("\n");
        }
        sb.append("    }").append("\n\n");
    }
    sb.append("}");
    return sb.toString();
}

Example 32 with MethodNode

use of org.mapleir.asm.MethodNode in project maple-ir by LLVM-but-worse.

the class CompleteResolvingJarDumper method dumpClass.

/**
 * Writes the {@link ClassNode} to the Jar.
 *
 * @param out The {@link JarOutputStream}.
 * @param cn The ClassNode.
 * @param name The entry name.
 * @throws IOException If there is a write error.
 * @return The amount of things dumped, 1 or if you're not dumping it 0.
 */
@Override
public int dumpClass(JarOutputStream out, String name, ClassNode cn) throws IOException {
    JarEntry entry = new JarEntry(cn.getName() + ".class");
    out.putNextEntry(entry);
    ClassTree tree = source.getClassTree();
    for (MethodNode m : cn.getMethods()) {
        if (m.node.instructions.size() > 10000) {
            System.out.println("large method: " + m + " @" + m.node.instructions.size());
        }
    }
    try {
        try {
            ClassWriter writer = this.buildClassWriter(tree, ClassWriter.COMPUTE_FRAMES);
            // must use custom writer which overrides getCommonSuperclass
            cn.node.accept(writer);
            out.write(writer.toByteArray());
        } catch (Exception e) {
            ClassWriter writer = this.buildClassWriter(tree, ClassWriter.COMPUTE_MAXS);
            // must use custom writer which overrides getCommonSuperclass
            cn.node.accept(writer);
            out.write(writer.toByteArray());
            System.err.println("Failed to write " + cn.getName() + "! Writing with COMPUTE_MAXS, " + "which may cause runtime abnormalities");
        }
    } catch (Exception e) {
        System.err.println("Failed to write " + cn.getName() + "! Skipping class...");
    }
    return 1;
}

Example 33 with MethodNode

use of org.mapleir.asm.MethodNode in project maple-ir by LLVM-but-worse.

the class FieldRSADecryptionPass method accept.

@Override
public PassResult accept(PassContext pcxt) {
    this.cxt = pcxt.getAnalysis();
    for (MethodNode m : cxt.getIRCache().getActiveMethods()) {
        ControlFlowGraph cfg = cxt.getIRCache().getFor(m);
        for (BasicBlock b : cfg.vertices()) {
            for (Stmt stmt : b) {
                for (Expr c : stmt.enumerateOnlyChildren()) {
                    if (c.getOpcode() == ARITHMETIC) {
                        ArithmeticExpr arith = (ArithmeticExpr) c;
                        if (arith.getOperator() == Operator.MUL) {
                            Expr l = arith.getLeft();
                            Expr r = arith.getRight();
                            if (r.getOpcode() == CONST_LOAD && l.getOpcode() == FIELD_LOAD) {
                                FieldLoadExpr fle = (FieldLoadExpr) l;
                                ConstantExpr constt = (ConstantExpr) r;
                                Number n = (Number) constt.getConstant();
                                boolean isLong = (n instanceof Long);
                                if (__eq(n, 1, isLong) || __eq(n, 0, isLong)) {
                                    continue;
                                }
                                if (n instanceof Integer || n instanceof Long) {
                                    cdecs.getNonNull(key(fle)).add(n);
                                }
                            }
                        }
                    }
                }
                if (stmt.getOpcode() == FIELD_STORE) {
                    FieldStoreStmt fss = (FieldStoreStmt) stmt;
                    Expr val = fss.getValueExpression();
                    if (bcheck1(val)) {
                        if (val.getOpcode() == CONST_LOAD) {
                            ConstantExpr c = (ConstantExpr) val;
                            if (c.getConstant() instanceof Integer || c.getConstant() instanceof Long) {
                                Number n = (Number) c.getConstant();
                                if (large(n, c.getConstant() instanceof Long)) {
                                    cencs.getNonNull(key(fss)).add(n);
                                }
                            }
                        }
                        continue;
                    }
                    ArithmeticExpr ar = (ArithmeticExpr) val;
                    if (ar.getRight().getOpcode() == CONST_LOAD) {
                        ConstantExpr c = (ConstantExpr) ar.getRight();
                        Number n = (Number) c.getConstant();
                        boolean isLong = c.getConstant() instanceof Long;
                        if (__eq(n, 1, isLong) || __eq(n, 0, isLong)) {
                            continue;
                        }
                        if (ar.getOperator() == Operator.ADD) {
                            if (!large(n, isLong)) {
                                continue;
                            }
                        }
                        cencs.getNonNull(key(fss)).add(n);
                    }
                }
            }
            for (Stmt stmt : b) {
                if (stmt.getOpcode() == FIELD_STORE) {
                    if (key((FieldStoreStmt) stmt).equals("co.k I")) {
                    // System.out.println("HERE1: " + stmt);
                    // 
                    // System.out.println(cfg);
                    }
                    handleFss((FieldStoreStmt) stmt);
                }
                for (Expr e : stmt.enumerateOnlyChildren()) {
                    if (e.getOpcode() == FIELD_LOAD) {
                        if (key((FieldLoadExpr) e).equals("co.k I")) {
                        // System.out.println("HERE2: " + stmt);
                        }
                        handleFle(stmt, (FieldLoadExpr) e);
                    }
                }
            }
        }
    }
    Set<String> keys = new HashSet<>();
    keys.addAll(cencs.keySet());
    keys.addAll(cdecs.keySet());
    for (String k : keys) {
        boolean _longint = k.endsWith("J");
        Set<Number> encs = cencs.getNonNull(k);
        Set<Number> decs = cdecs.getNonNull(k);
        try {
            Number[] pair = get_pair(encs, decs, constants.getNonNull(k), _longint);
            if (pair.length != 2) {
                Set<Number> extended = new HashSet<>(constants.getNonNull(k));
                extended.addAll(dangerConstants.getNonNull(k));
                pair = get_pair(encs, decs, extended, _longint);
            }
            if (pair.length != 2) {
            // System.out.println("No pair for: " + k);
            // System.out.println("Constants: " + constants.getNonNull(k));
            // System.out.println("Dconsts  : " + dangerConstants.getNonNull(k));
            // System.out.println("Encs     : " + encs);
            // System.out.println("Decs     : " + decs);
            } else {
                pairs.put(k, pair);
            // System.out.println("for: " + k + ": " + Arrays.toString(pair));
            }
        } catch (IllegalStateException e) {
            System.err.println();
            System.err.println("Constants: " + constants.getNonNull(k));
            System.out.println("Dconsts  : " + dangerConstants.getNonNull(k));
            System.err.println("Encs     : " + encs);
            System.err.println("Decs     : " + decs);
            System.err.println("key: " + k);
            throw e;
        }
    }
    System.out.printf("  identified %n field encoder/decoder pairs.%n", pairs.size());
    transform(cxt);
    return PassResult.with(pcxt, this).finished().make();
}

Example 34 with MethodNode

use of org.mapleir.asm.MethodNode in project maple-ir by LLVM-but-worse.

the class FieldRSADecryptionPass method transform.

private void transform(AnalysisContext cxt) {
    for (ClassNode cn : cxt.getApplication().iterate()) {
        for (MethodNode m : cn.getMethods()) {
            ControlFlowGraph cfg = cxt.getIRCache().getFor(m);
            for (BasicBlock b : cfg.vertices()) {
                for (Stmt stmt : b) {
                    // String fsKey = "";
                    if (stmt.getOpcode() == Opcode.FIELD_STORE) {
                        FieldStoreStmt fs = (FieldStoreStmt) stmt;
                        // [enc, dec]
                        Number[] p = pairs.get(key(fs));
                        if (p != null) {
                            Expr e = fs.getValueExpression();
                            e.unlink();
                            ArithmeticExpr ae = new ArithmeticExpr(new ConstantExpr(p[1], ConstantExpr.computeType(p[1])), e, Operator.MUL);
                            fs.setValueExpression(ae);
                        // fsKey = key(fs);
                        }
                    }
                    for (Expr e : stmt.enumerateOnlyChildren()) {
                        if (e.getOpcode() == FIELD_LOAD) {
                            CodeUnit par = e.getParent();
                            FieldLoadExpr fl = (FieldLoadExpr) e;
                            // [enc, dec]
                            Number[] p = pairs.get(key(fl));
                            if (p == null) {
                                continue;
                            }
                            if (par.getOpcode() == ARITHMETIC) {
                                ArithmeticExpr ae = (ArithmeticExpr) par;
                                if (ae.getRight().getOpcode() == CONST_LOAD) {
                                    ConstantExpr ce = (ConstantExpr) ae.getRight();
                                    Number cst = (Number) ce.getConstant();
                                    Number res = __mul(cst, p[0], p[0].getClass().equals(Long.class));
                                    // if(!__eq(res, 1, p[0].getClass().equals(Long.class))) {
                                    // System.out.println(cst + " -> " + res);
                                    // System.out.println("  expr: " + fl.getRootParent());
                                    // }
                                    par.writeAt(new ConstantExpr(res, ConstantExpr.computeType(res)), par.indexOf(ce));
                                    continue;
                                }
                            }
                            ArithmeticExpr ae = new ArithmeticExpr(new ConstantExpr(p[0], ConstantExpr.computeType(p[0])), fl.copy(), Operator.MUL);
                            par.writeAt(ae, par.indexOf(fl));
                        }
                    }
                }
            }
        }
    }
// for(ClassNode cn : cxt.getClassTree().getClasses().values()) {
// for(MethodNode m : cn.getMethods()) {
// ControlFlowGraph cfg = cxt.getCFGS().getIR(m);
// 
// for(BasicBlock b : cfg.vertices()) {
// for(Stmt stmt : b) {
// for(Expr e : stmt.enumerateOnlyChildren()) {
// if(e.getOpcode() == Opcode.ARITHMETIC) {
// ArithmeticExpr ae = (ArithmeticExpr) e;
// if(ae.getRight().getOpcode() == Opcode.CONST_LOAD) {
// ConstantExpr c = (ConstantExpr) ae.getRight();
// Object o = c.getConstant();
// 
// if(o instanceof Long || o instanceof Integer) {
// Number n = (Number) o;
// if(__eq(n, 1, ae.getType().equals(DescType.LONG_TYPE))) {
// Expr l = ae.getLeft();
// l.unlink();
// 
// CodeUnit aePar = ae.getParent();
// aePar.writeAt(l, aePar.indexOf(ae));
// } else if(__eq(n, 0, ae.getType().equals(DescType.LONG_TYPE))) {
// c.unlink();
// 
// CodeUnit aePar = ae.getParent();
// aePar.writeAt(c, aePar.indexOf(ae));
// }
// }
// }
// }
// }
// }
// }
// }
// }
}

Example 35 with MethodNode

use of org.mapleir.asm.MethodNode in project maple-ir by LLVM-but-worse.

the class ClassRenamerPass method accept.

/*private String getClassName(String name) {
		int i = name.lastIndexOf('/');
		if(i == -1) {
			return name;
		} else {
			return name.substring(i + 1, name.length());
		}
	}*/
@Override
public PassResult accept(PassContext pcxt) {
    AnalysisContext cxt = pcxt.getAnalysis();
    ApplicationClassSource source = cxt.getApplication();
    Collection<ClassNode> classes = CollectionUtils.collate(source.iterator());
    // int min = RenamingUtil.computeMinimum(classes.size());
    int n = RenamingUtil.numeric("aaa");
    int step = 27;
    for (ClassNode cn : classes) {
        String className = RenamingUtil.getClassName(cn.getName());
        if (!heuristic.shouldRename(className, cn.node.access)) {
            System.out.println("Heuristic bypass " + cn.getName());
        }
        String newName = heuristic.shouldRename(className, cn.node.access) ? RenamingUtil.createName(n) : className;
        String s = RenamingUtil.getPackage(cn.getName()) + newName;
        n += step;
        remapping.put(cn.getName(), s);
        // System.out.println(cn.getName() + " -> " + s);
        cn.node.name = s;
    }
    for (ClassNode cn : classes) {
        cn.node.superName = remapping.getOrDefault(cn.node.superName, cn.node.superName);
        {
            List<String> ifaces = new ArrayList<>();
            for (int i = 0; i < cn.node.interfaces.size(); i++) {
                String s = cn.node.interfaces.get(i);
                ifaces.add(remapping.getOrDefault(s, s));
            }
            cn.node.interfaces = ifaces;
        }
        unsupported(cn.node.signature);
        // unsupported(cn.sourceFile);
        // unsupported(cn.sourceDebug);
        cn.node.outerClass = remapping.getOrDefault(cn.node.outerClass, cn.node.outerClass);
        // unsupported(cn.outerMethod);
        // unsupported(cn.outerMethodDesc);
        unsupported(cn.node.visibleAnnotations);
        unsupported(cn.node.invisibleAnnotations);
        unsupported(cn.node.visibleTypeAnnotations);
        unsupported(cn.node.invisibleTypeAnnotations);
        unsupported(cn.node.attrs);
        unsupported(cn.node.innerClasses);
        for (FieldNode f : cn.getFields()) {
            unsupported(cn.node.signature);
            {
                Type type = Type.getType(f.node.desc);
                String newType = resolveType(type, remapping);
                if (newType != null) {
                    f.node.desc = newType;
                }
            }
            unsupported(f.node.visibleAnnotations);
            unsupported(f.node.invisibleAnnotations);
            unsupported(f.node.visibleTypeAnnotations);
            unsupported(f.node.invisibleTypeAnnotations);
            unsupported(f.node.attrs);
        }
        for (MethodNode m : cn.getMethods()) {
            m.node.desc = resolveMethod(m.node.desc, remapping);
            unsupported(m.node.signature);
            {
                List<String> exceptions = new ArrayList<>();
                for (int i = 0; i < m.node.exceptions.size(); i++) {
                    String s = m.node.exceptions.get(i);
                    exceptions.add(remapping.getOrDefault(s, s));
                }
                m.node.exceptions = exceptions;
            }
            unsupported(m.node.parameters);
            unsupported(m.node.visibleAnnotations);
            unsupported(m.node.invisibleAnnotations);
            unsupported(m.node.visibleTypeAnnotations);
            unsupported(m.node.invisibleTypeAnnotations);
            unsupported(m.node.attrs);
            unsupported(m.node.annotationDefault);
            unsupported(m.node.visibleParameterAnnotations);
            unsupported(m.node.invisibleParameterAnnotations);
            for (TryCatchBlockNode tcbn : m.node.tryCatchBlocks) {
                tcbn.type = remapping.getOrDefault(tcbn.type, tcbn.type);
            }
            ControlFlowGraph cfg = cxt.getIRCache().getFor(m);
            for (ExceptionRange<BasicBlock> er : cfg.getRanges()) {
                Set<Type> newTypeSet = new HashSet<>();
                for (Type t : er.getTypes()) {
                    // FIXME:
                    String s = t.getInternalName();
                    if (remapping.containsKey(s)) {
                        newTypeSet.add(Type.getType("L" + remapping.get(s) + ";"));
                    } else {
                        newTypeSet.add(t);
                    }
                }
                er.setTypes(newTypeSet);
            }
            if (m.node.localVariables != null) {
                m.node.localVariables.clear();
                for (LocalVariableNode lvn : m.node.localVariables) {
                    String newDesc = resolveType(Type.getType(lvn.desc), remapping);
                    if (newDesc != null) {
                        lvn.desc = newDesc;
                    }
                    unsupported(lvn.signature);
                }
            }
            unsupported(m.node.visibleLocalVariableAnnotations);
            unsupported(m.node.invisibleLocalVariableAnnotations);
            for (BasicBlock b : cfg.vertices()) {
                for (Stmt stmt : b) {
                    if (stmt.getOpcode() == Opcode.FIELD_STORE) {
                        FieldStoreStmt fs = (FieldStoreStmt) stmt;
                        String owner = fs.getOwner();
                        fs.setOwner(remapping.getOrDefault(owner, owner));
                        {
                            Type type = Type.getType(fs.getDesc());
                            String newType = resolveType(type, remapping);
                            if (newType != null) {
                                fs.setDesc(newType);
                            }
                        }
                    } else if (stmt.getOpcode() == Opcode.RETURN) {
                        ReturnStmt ret = (ReturnStmt) stmt;
                        String newType = resolveType(ret.getType(), remapping);
                        if (newType != null) {
                            ret.setType(Type.getType(newType));
                        }
                    } else if (stmt instanceof AbstractCopyStmt) {
                        AbstractCopyStmt copy = (AbstractCopyStmt) stmt;
                        VarExpr v = copy.getVariable();
                        String newType = resolveType(v.getType(), remapping);
                        if (newType != null) {
                            v.setType(Type.getType(newType));
                        }
                    }
                    for (Expr e : stmt.enumerateOnlyChildren()) {
                        if (e.getOpcode() == Opcode.CAST) {
                            CastExpr cast = (CastExpr) e;
                            String newType = resolveType(cast.getType(), remapping);
                            if (newType != null) {
                                cast.setType(Type.getType(newType));
                            }
                        } else if (e.getOpcode() == Opcode.CATCH) {
                            CaughtExceptionExpr caught = (CaughtExceptionExpr) e;
                            String newType = resolveType(caught.getType(), remapping);
                            if (newType != null) {
                                caught.setType(Type.getType(newType));
                            }
                        } else if (e.getOpcode() == Opcode.INVOKE) {
                            InvocationExpr invoke = (InvocationExpr) e;
                            if (invoke.isDynamic())
                                throw new UnsupportedOperationException();
                            invoke.setOwner(remapping.getOrDefault(invoke.getOwner(), invoke.getOwner()));
                            invoke.setDesc(resolveMethod(invoke.getDesc(), remapping));
                        } else if (e.getOpcode() == Opcode.FIELD_LOAD) {
                            FieldLoadExpr fl = (FieldLoadExpr) e;
                            fl.setOwner(remapping.getOrDefault(fl.getOwner(), fl.getOwner()));
                            String newType = resolveType(fl.getType(), remapping);
                            if (newType != null) {
                                fl.setDesc(newType);
                            }
                        } else if (e.getOpcode() == Opcode.INIT_OBJ) {
                            InitialisedObjectExpr init = (InitialisedObjectExpr) e;
                            init.setOwner(remapping.getOrDefault(init.getOwner(), init.getOwner()));
                            init.setDesc(resolveMethod(init.getDesc(), remapping));
                        } else if (e.getOpcode() == Opcode.INSTANCEOF) {
                            InstanceofExpr inst = (InstanceofExpr) e;
                            String newType = resolveType(inst.getCheckType(), remapping);
                            if (newType != null) {
                                inst.setCheckType(Type.getType(newType));
                            }
                        } else if (e.getOpcode() == Opcode.NEW_ARRAY) {
                            NewArrayExpr na = (NewArrayExpr) e;
                            String newType = resolveType(na.getType(), remapping);
                            if (newType != null) {
                                na.setType(Type.getType(newType));
                            }
                        } else if (e.getOpcode() == Opcode.ALLOC_OBJ) {
                            AllocObjectExpr uninit = (AllocObjectExpr) e;
                            String newType = resolveType(uninit.getType(), remapping);
                            if (newType != null) {
                                uninit.setType(Type.getType(newType));
                            }
                        } else if (e.getOpcode() == Opcode.LOCAL_LOAD) {
                            VarExpr v = (VarExpr) e;
                            String newType = resolveType(v.getType(), remapping);
                            if (newType != null) {
                                v.setType(Type.getType(newType));
                            }
                        } else if (e.getOpcode() == Opcode.CONST_LOAD) {
                            ConstantExpr c = (ConstantExpr) e;
                            Object cst = c.getConstant();
                            if (cst instanceof Type) {
                                Type t = (Type) cst;
                                if (t.getSort() == Type.OBJECT) {
                                    String newType = resolveType(t, remapping);
                                    if (newType != null) {
                                        c.setConstant(Type.getType(newType));
                                    }
                                } else {
                                    throw new UnsupportedOperationException(String.format("Unsupported ctype %s (%d)", t, t.getSort()));
                                }
                            }
                        }
                    }
                }
            }
        }
    }
    source.rebuildTable();
    return PassResult.with(pcxt, this).finished().make();
}