Examples with GetFieldInstruction net.runelite.asm.attributes.code.instruction.types.GetFieldInstruction used on opensource projects

Example 1 with GetFieldInstruction

use of net.runelite.asm.attributes.code.instruction.types.GetFieldInstruction in project runelite by runelite.

the class ArrayStore method map.

@Override
public void map(ParallelExecutorMapping mapping, InstructionContext ctx, InstructionContext other) {
    assert ctx.getInstruction().getClass() == other.getInstruction().getClass();
    Field myField = this.getMyField(ctx), otherField = ((ArrayStore) other.getInstruction()).getMyField(other);
    mapping.map(this, myField, otherField);
    // map value
    StackContext // value set to.
    object1 = ctx.getPops().get(0), object2 = other.getPops().get(0);
    InstructionContext base1 = MappingExecutorUtil.resolve(object1.getPushed(), object1);
    InstructionContext base2 = MappingExecutorUtil.resolve(object2.getPushed(), object2);
    if (base1.getInstruction() instanceof GetFieldInstruction && base2.getInstruction() instanceof GetFieldInstruction) {
        GetFieldInstruction gf1 = (GetFieldInstruction) base1.getInstruction(), gf2 = (GetFieldInstruction) base2.getInstruction();
        Field f1 = gf1.getMyField(), f2 = gf2.getMyField();
        assert MappingExecutorUtil.isMaybeEqual(f1, f2);
        if (f1 != null && f2 != null) {
            mapping.map(this, f1, f2);
        }
    }
}

Example 2 with GetFieldInstruction

use of net.runelite.asm.attributes.code.instruction.types.GetFieldInstruction in project runelite by runelite.

the class InvokeVirtual method isSame.

@Override
public boolean isSame(InstructionContext thisIc, InstructionContext otherIc) {
    if (thisIc.getInstruction().getClass() != otherIc.getInstruction().getClass()) {
        return false;
    }
    InvokeVirtual thisIi = (InvokeVirtual) thisIc.getInstruction(), otherIi = (InvokeVirtual) otherIc.getInstruction();
    if (!MappingExecutorUtil.isMaybeEqual(thisIi.method.getType(), otherIi.method.getType())) {
        return false;
    }
    List<net.runelite.asm.Method> thisMethods = thisIi.getMethods(), otherMethods = otherIi.getMethods();
    if (thisMethods.size() != otherMethods.size()) {
        return false;
    }
    for (int i = 0; i < thisMethods.size(); ++i) {
        net.runelite.asm.Method m1 = thisMethods.get(i);
        net.runelite.asm.Method m2 = otherMethods.get(i);
        // were loaded, which might not be the same
        if (!MappingExecutorUtil.isMaybeEqual(m1.getDescriptor(), m2.getDescriptor())) {
            return false;
        }
        // descriptors for all methods must be the same
        break;
    }
    /* check arguments */
    assert thisIc.getPops().size() == otherIc.getPops().size();
    for (int i = 0; i < thisIc.getPops().size(); ++i) {
        StackContext s1 = thisIc.getPops().get(i), s2 = otherIc.getPops().get(i);
        InstructionContext base1 = MappingExecutorUtil.resolve(s1.getPushed(), s1);
        InstructionContext base2 = MappingExecutorUtil.resolve(s2.getPushed(), s2);
        if (base1.getInstruction() instanceof GetFieldInstruction && base2.getInstruction() instanceof GetFieldInstruction) {
            GetFieldInstruction gf1 = (GetFieldInstruction) base1.getInstruction(), gf2 = (GetFieldInstruction) base2.getInstruction();
            Field f1 = gf1.getMyField(), f2 = gf2.getMyField();
            if (!MappingExecutorUtil.isMaybeEqual(f1, f2)) {
                return false;
            }
        }
    }
    /* check field that was invoked on */
    StackContext object1 = thisIc.getPops().get(thisIi.method.getType().size()), object2 = otherIc.getPops().get(otherIi.method.getType().size());
    InstructionContext base1 = MappingExecutorUtil.resolve(object1.getPushed(), object1);
    InstructionContext base2 = MappingExecutorUtil.resolve(object2.getPushed(), object2);
    if (base1.getInstruction() instanceof GetFieldInstruction && base2.getInstruction() instanceof GetFieldInstruction) {
        GetFieldInstruction gf1 = (GetFieldInstruction) base1.getInstruction(), gf2 = (GetFieldInstruction) base2.getInstruction();
        Field f1 = gf1.getMyField(), f2 = gf2.getMyField();
        if (!MappingExecutorUtil.isMaybeEqual(f1, f2)) {
            return false;
        }
    }
    return true;
}

Example 3 with GetFieldInstruction

use of net.runelite.asm.attributes.code.instruction.types.GetFieldInstruction in project runelite by runelite.

the class InvokeStatic method map.

@Override
public void map(ParallelExecutorMapping mapping, InstructionContext ctx, InstructionContext other) {
    List<net.runelite.asm.Method> myMethods = this.getMethods(), otherMethods = ((InvokeStatic) other.getInstruction()).getMethods();
    assert myMethods.size() == otherMethods.size();
    for (int i = 0; i < myMethods.size(); ++i) {
        mapping.map(this, myMethods.get(i), otherMethods.get(i));
    }
    for (int i = 0; i < ctx.getPops().size(); ++i) {
        StackContext s1 = ctx.getPops().get(i), s2 = other.getPops().get(i);
        InstructionContext base1 = MappingExecutorUtil.resolve(s1.getPushed(), s1);
        InstructionContext base2 = MappingExecutorUtil.resolve(s2.getPushed(), s2);
        if (base1.getInstruction() instanceof GetFieldInstruction && base2.getInstruction() instanceof GetFieldInstruction) {
            GetFieldInstruction gf1 = (GetFieldInstruction) base1.getInstruction(), gf2 = (GetFieldInstruction) base2.getInstruction();
            Field f1 = gf1.getMyField(), f2 = gf2.getMyField();
            if (f1 != null && f2 != null) {
                mapping.map(this, f1, f2);
            }
        }
    }
}

Example 4 with GetFieldInstruction

use of net.runelite.asm.attributes.code.instruction.types.GetFieldInstruction in project runelite by runelite.

the class ModArith method insertGetterSetterMuls.

private void insertGetterSetterMuls(Encryption encr) {
    // before setfield insert imul * getter
    for (ClassFile cf : group.getClasses()) {
        for (Method m : cf.getMethods()) {
            Code code = m.getCode();
            if (code == null) {
                continue;
            }
            Instructions ins = code.getInstructions();
            List<Instruction> ilist = ins.getInstructions();
            for (int i = 0; i < ilist.size(); ++i) {
                Instruction in = ilist.get(i);
                if (in instanceof SetFieldInstruction) {
                    SetFieldInstruction sfi = (SetFieldInstruction) in;
                    Field f = sfi.getMyField();
                    if (f == null) {
                        continue;
                    }
                    Pair p = encr.getField(f.getPoolField());
                    if (p == null) {
                        continue;
                    }
                    // insert imul
                    if (p.getType() == Integer.class) {
                        ilist.add(i++, new LDC(ins, (int) p.getter));
                        ilist.add(i++, new IMul(ins));
                    } else if (p.getType() == Long.class) {
                        ilist.add(i++, new LDC(ins, (long) p.getter));
                        ilist.add(i++, new LMul(ins));
                    } else {
                        throw new IllegalStateException();
                    }
                } else if (in instanceof GetFieldInstruction) {
                    GetFieldInstruction sfi = (GetFieldInstruction) in;
                    Field f = sfi.getMyField();
                    if (f == null) {
                        continue;
                    }
                    Pair p = encr.getField(f.getPoolField());
                    if (p == null) {
                        continue;
                    }
                    // imul
                    if (p.getType() == Integer.class) {
                        ilist.add(++i, new LDC(ins, (int) p.setter));
                        ilist.add(++i, new IMul(ins));
                    } else if (p.getType() == Long.class) {
                        ilist.add(++i, new LDC(ins, (long) p.setter));
                        ilist.add(++i, new LMul(ins));
                    } else {
                        throw new IllegalStateException();
                    }
                }
            }
        }
    }
}

Example 5 with GetFieldInstruction

use of net.runelite.asm.attributes.code.instruction.types.GetFieldInstruction in project runelite by runelite.

the class MultiplicationDeobfuscator method parseExpression.

public static MultiplicationExpression parseExpression(InstructionContext ctx, Class want) {
    MultiplicationExpression me = new MultiplicationExpression();
    if (ctx.getInstruction() instanceof LVTInstruction) {
        LVTInstruction lvt = (LVTInstruction) ctx.getInstruction();
        // loading a variable
        if (!lvt.store()) {
            // var index
            int idx = lvt.getVariableIndex();
            // variables at time of execution
            Variables vars = ctx.getVariables();
            // get the variable
            VariableContext vctx = vars.get(idx);
            if (// ?
            vctx.getRead().size() == 1) {
                // this is an istore
                InstructionContext storeCtx = vctx.getInstructionWhichStored();
                if (storeCtx.getInstruction() instanceof LVTInstruction) {
                    // invoking funcs can put stuff in lvt
                    LVTInstruction storelvt = (LVTInstruction) storeCtx.getInstruction();
                    if (storelvt instanceof IInc)
                        throw new IllegalStateException();
                    assert storelvt.store();
                    InstructionContext pushed = storeCtx.getPops().get(0).getPushed();
                    return parseExpression(pushed, want);
                }
            }
        }
    }
    if (ctx.getInstruction() instanceof PushConstantInstruction) {
        if (ctx.getInstruction() instanceof BiPush || ctx.getInstruction() instanceof SiPush) {
            throw new IllegalStateException();
        }
        me.instructions.add(ctx);
        return me;
    }
    for (StackContext sctx : ctx.getPops()) {
        if (ctx.getInstruction().getClass() == want) {
            if (!isOnlyPath(ctx, sctx))
                continue;
        }
        InstructionContext i = sctx.getPushed();
        // if this instruction is imul, look at pops
        if (ctx.getInstruction().getClass() == want) {
            if (i.getInstruction() instanceof Swap) {
                logger.debug("Resolving swap");
                Swap swap = (Swap) i.getInstruction();
                sctx = swap.getOriginal(sctx);
                i = sctx.getPushed();
            }
            if (i.getInstruction() instanceof PushConstantInstruction) {
                // bipush/sipush are always not obfuscated
                if (i.getInstruction() instanceof BiPush || i.getInstruction() instanceof SiPush)
                    continue;
                // a constant of imul
                me.instructions.add(i);
            } else if (i.getInstruction().getClass() == want) {
                // chained imul, append to me
                try {
                    MultiplicationExpression other = parseExpression(i, want);
                    if (other.dupmagic != null) {
                        assert me.dupmagic == null;
                        me.dupmagic = other.dupmagic;
                    }
                    me.instructions.addAll(other.instructions);
                    me.dupedInstructions.addAll(other.dupedInstructions);
                    me.subexpressions.addAll(other.subexpressions);
                } catch (IllegalStateException ex) {
                // this is ok? just don't include it?
                }
            } else if (i.getInstruction() instanceof IAdd || i.getInstruction() instanceof ISub || i.getInstruction() instanceof LAdd || i.getInstruction() instanceof LSub) {
                // imul using result of iadd or isub. evaluate expression
                try {
                    MultiplicationExpression other = parseExpression(i, want);
                    assert other.dupmagic == null;
                    // subexpr
                    me.subexpressions.add(other);
                } catch (IllegalStateException ex) {
                    assert me.subexpressions.isEmpty();
                // subexpression is too complex. we can still simplify the top level though
                }
            } else if (i.getInstruction() instanceof DupInstruction) {
                DupInstruction dup = (DupInstruction) i.getInstruction();
                // find other branch of the dup instruction
                // sctx = what dup pushed, find other
                // other side of dup
                StackContext otherCtx = dup.getOtherBranch(sctx);
                // what popped other side of dup. is this right?
                InstructionContext otherCtxI = otherCtx.getPopped().get(0);
                if (otherCtxI.getInstruction().getClass() == want) {
                    // assert otherCtxI.getInstruction() instanceof IMul;
                    // other side of that imul
                    InstructionContext pushConstant = otherCtxI.getPops().get(0).getPushed();
                    assert pushConstant.getInstruction() instanceof LDC;
                    me.dupmagic = pushConstant;
                    // original
                    StackContext orig = dup.getOriginal(sctx);
                    try {
                        MultiplicationExpression other = parseExpression(orig.getPushed(), want);
                        // done to it affect that, too. so multiply it by existing values?
                        if (orig.getPushed().getInstruction() instanceof IAdd || orig.getPushed().getInstruction() instanceof ISub || orig.getPushed().getInstruction() instanceof LAdd || orig.getPushed().getInstruction() instanceof LSub) {
                            me.subexpressions.add(other);
                        } else {
                            assert other.dupmagic == null;
                            me.instructions.addAll(other.instructions);
                            me.dupedInstructions.addAll(other.instructions);
                            me.subexpressions.addAll(other.subexpressions);
                        }
                    } catch (IllegalStateException ex) {
                        assert me.subexpressions.isEmpty();
                    }
                }
            } else if (i.getInstruction() instanceof GetFieldInstruction) {
                me.fieldInstructions.add(i);
            // non constant, ignore
            } else {
            // System.out.println("imul pops something I don't know " + i.getInstruction());
            }
        } else // this is an iadd/sub
        if (ctx.getInstruction() instanceof IAdd || ctx.getInstruction() instanceof ISub || ctx.getInstruction() instanceof LAdd || ctx.getInstruction() instanceof LSub) {
            // parse this side of the add/sub
            MultiplicationExpression other = parseExpression(i, want);
            me.subexpressions.add(other);
        } else {
        // System.out.println(ctx.getInstruction() + " pops something I dont know " + i.getInstruction());
        }
    }
    if (me.instructions.isEmpty() && me.subexpressions.isEmpty())
        throw new IllegalStateException();
    return me;
}