diff --git a/decompilation.md b/decompilation.md
new file mode 100644
index 0000000..15369a3
--- /dev/null
+++ b/decompilation.md
@@ -0,0 +1,4 @@
+# Decompilation
+
+- The process of rewriting an application into a target-independent programming
+  language
diff --git a/ghidra.md b/ghidra.md
new file mode 100644
index 0000000..c6126aa
--- /dev/null
+++ b/ghidra.md
@@ -0,0 +1,8 @@
+# Ghidra
+
+- SRE (Software Reverse Engineering) tool
+- Has a [[Java]]-based plugin system
+
+[//begin]: # "Autogenerated link references for markdown compatibility"
+[Java]: java "Java"
+[//end]: # "Autogenerated link references"
diff --git a/java.md b/java.md
new file mode 100644
index 0000000..b8768ce
--- /dev/null
+++ b/java.md
@@ -0,0 +1,3 @@
+# Java
+
+- Programming language
diff --git a/journal/2020-10-31.md b/journal/2020-10-31.md
index 5833c92..5f1f955 100644
--- a/journal/2020-10-31.md
+++ b/journal/2020-10-31.md
@@ -1,7 +1,12 @@
 # 2020-10-31
 
 - Set up this journal. See the [[readme]].
+- Looked into writing a [[Ghidra]] plugin to generate [[MASM Assembly]] for a
+  [[decompilation]] project.
 
 [//begin]: # "Autogenerated link references for markdown compatibility"
 [readme]: ..\README "Aly's digital garden"
+[Ghidra]: ..\ghidra "Ghidra"
+[MASM Assembly]: ..\masm-assembly "MASM Assembly"
+[decompilation]: ..\decompilation "Decompilation"
 [//end]: # "Autogenerated link references"
diff --git a/masm-assembly.md b/masm-assembly.md
new file mode 100644
index 0000000..724e8c7
--- /dev/null
+++ b/masm-assembly.md
@@ -0,0 +1,3 @@
+# MASM Assembly
+
+- A dialect of assembly meant for Microsoft's compiler