121 lines
3.6 KiB
Java
121 lines
3.6 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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//Convenience script to quickly clear, edit, and recreate the code or data at the current cursor location.
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//@category Memory
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//@keybinding
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//@menupath
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//@toolbar
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//
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import java.util.Map.Entry;
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import java.util.TreeMap;
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import ghidra.app.cmd.disassemble.DisassembleCommand;
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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.AddressSet;
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import ghidra.program.model.data.DataType;
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import ghidra.program.model.listing.*;
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import ghidra.program.model.mem.MemoryAccessException;
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import ghidra.program.model.util.CodeUnitInsertionException;
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public class EditBytesScript extends GhidraScript {
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@Override
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public void run() throws Exception {
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byte[] newBytes = null;
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Address endAddr = null;
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Address activeAddr = null;
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Address codeEnd = null;
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boolean containedInBlock = false;
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while (containedInBlock == false) {
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monitor.checkCanceled();
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newBytes = askBytes("Replace Bytes", "Replace bytes at cursor with:");
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endAddr = currentLocation.getByteAddress().add(newBytes.length - 1);
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activeAddr = currentLocation.getByteAddress();
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containedInBlock = currentProgram.getMemory().getBlock(activeAddr).contains(endAddr);
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if (containedInBlock == true) {
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break;
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}
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popup("Bytes entered cannot be contained in current memory block");
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}
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Address startAddr = currentLocation.getByteAddress();
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activeAddr = currentProgram.getListing().getCodeUnitContaining(activeAddr).getAddress();
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AddressSet addrSet = new AddressSet(activeAddr, endAddr);
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CodeUnitIterator iter = currentProgram.getListing().getCodeUnits(addrSet, true);
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AddressSet codeAddrSet = null;
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TreeMap<Address, DataType> addrToDataTypeMap = new TreeMap<>();
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TreeMap<Address, AddressSet> addrToCodeMap = new TreeMap<>();
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while (iter.hasNext()) {
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activeAddr = iter.next().getAddress();
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Data data = getDataAt(activeAddr);
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if (data != null) {
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DataType dataType = data.getDataType();
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addrToDataTypeMap.put(activeAddr, dataType);
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continue;
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}
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Instruction code = getInstructionContaining(activeAddr);
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if (code != null) {
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codeEnd = activeAddr.add(code.getLength() - 1);
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codeAddrSet = new AddressSet(activeAddr, codeEnd);
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addrToCodeMap.put(activeAddr, codeAddrSet);
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continue;
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}
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if (activeAddr.equals(endAddr)) {
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break;
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}
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}
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clearListing(startAddr, endAddr);
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try {
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setBytes(startAddr, newBytes);
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}
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catch (MemoryAccessException e) {
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popup("Bytes cannot be set on uninitialized memory");
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return;
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}
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for (Entry<Address, DataType> entry : addrToDataTypeMap.entrySet()) {
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try {
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createData(entry.getKey(), entry.getValue());
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}
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catch (CodeUnitInsertionException e) {
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//leaves bytes undefined if there is no 00 byte at the end to
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//make a null terminated string
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return;
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}
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}
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for (Entry<Address, AddressSet> entry : addrToCodeMap.entrySet()) {
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DisassembleCommand cmd = new DisassembleCommand(entry.getKey(), entry.getValue(), true);
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cmd.applyTo(currentProgram, monitor);
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}
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}
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}
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