Candidate release of source code.

Ghidra/Features/Base/ghidra_scripts/XorMemoryScript.java

@@ -0,0 +1,60 @@
+/* ###
+ * IP: GHIDRA
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+//XOR's the memory of the current program.
+//@category Memory
+
+import ghidra.app.script.GhidraScript;
+import ghidra.program.model.address.Address;
+import ghidra.program.model.address.AddressIterator;
+import ghidra.program.model.address.AddressSet;
+import ghidra.program.model.address.AddressSetView;
+import ghidra.program.model.mem.Memory;
+import ghidra.program.model.mem.MemoryBlock;
+
+public class XorMemoryScript extends GhidraScript {
+
+    @Override
+    public void run() throws Exception {
+    	
+    	// default to the current memory block
+    	Memory memory = currentProgram.getMemory();
+    	MemoryBlock block = memory.getBlock(currentAddress);
+    	AddressSetView set = new AddressSet(block.getStart(),block.getEnd());
+    	
+    	if (currentSelection != null && !currentSelection.isEmpty()) {
+    		set = currentSelection;
+    	}
+    	
+    	byte[] xorValues = askBytes("XorValue", "Values to xor with selected memory:");
+    	
+    	int valueLength = xorValues.length;
+    	int xorIndex = 0;
+    	
+    	AddressIterator aIter = set.getAddresses(true);
+    	
+    	while (aIter.hasNext() && !monitor.isCancelled()) {
+    		Address addr = aIter.next();
+    		monitor.setMessage(addr.toString());
+    		byte xorValue = xorValues[xorIndex];
+    		byte b = memory.getByte(addr);
+    		b = (byte) (b ^ xorValue);
+    		memory.setByte(addr, b);
+    		xorIndex += 1;
+    		xorIndex = xorIndex % valueLength;
+    	}
+    }
+
+}