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61 lines
2.0 KiB
Java
61 lines
2.0 KiB
Java
/* ###
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* IP: GHIDRA
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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//XOR's the memory of the current program.
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//@category Memory
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import ghidra.app.script.GhidraScript;
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import ghidra.program.model.address.Address;
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import ghidra.program.model.address.AddressIterator;
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import ghidra.program.model.address.AddressSet;
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import ghidra.program.model.address.AddressSetView;
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import ghidra.program.model.mem.Memory;
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import ghidra.program.model.mem.MemoryBlock;
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public class XorMemoryScript extends GhidraScript {
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@Override
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public void run() throws Exception {
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// default to the current memory block
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Memory memory = currentProgram.getMemory();
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MemoryBlock block = memory.getBlock(currentAddress);
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AddressSetView set = new AddressSet(block.getStart(),block.getEnd());
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if (currentSelection != null && !currentSelection.isEmpty()) {
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set = currentSelection;
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}
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byte[] xorValues = askBytes("XorValue", "Values to xor with selected memory:");
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int valueLength = xorValues.length;
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int xorIndex = 0;
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AddressIterator aIter = set.getAddresses(true);
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while (aIter.hasNext() && !monitor.isCancelled()) {
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Address addr = aIter.next();
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monitor.setMessage(addr.toString());
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byte xorValue = xorValues[xorIndex];
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byte b = memory.getByte(addr);
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b = (byte) (b ^ xorValue);
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memory.setByte(addr, b);
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xorIndex += 1;
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xorIndex = xorIndex % valueLength;
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}
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}
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}
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