diff --git a/packages/nasm/2.15.5/build.sh b/packages/nasm/2.15.5/build.sh
new file mode 100755
index 0000000..1e1f4c3
--- /dev/null
+++ b/packages/nasm/2.15.5/build.sh
@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+
+# Put instructions to build your package in here
+PREFIX=$(realpath $(dirname $0))
+
+mkdir -p build
+
+cd build
+
+curl -L "https://www.nasm.us/pub/nasm/releasebuilds/2.15.05/nasm-2.15.05.tar.gz" -o nasm.tar.gz
+
+tar xzf nasm.tar.gz --strip-components=1
+
+# === autoconf based ===
+./configure --prefix "$PREFIX"
+
+make -j$(nproc)
+make install -j$(nproc)
+cd ../
+rm -rf build
diff --git a/packages/nasm/2.15.5/compile b/packages/nasm/2.15.5/compile
new file mode 100644
index 0000000..a8fe6da
--- /dev/null
+++ b/packages/nasm/2.15.5/compile
@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+
+# Put instructions to compile source code, remove this file if the language does not require this stage
+
+
+case "${PISTON_ALIAS}" in
+    nasm)
+        nasm -f elf32 -o binary.o $*
+        ld -m elf_i386 binary.o -o binary
+        ;;
+    nasm64)
+        nasm -f elf64 -o binary.o $*
+        ld -m elf_x86_64 binary.o -o binary
+        ;;
+    *)
+        echo "How did you get here? (${PISTON_ALIAS})"
+        exit 1
+        ;;
+esac
+
+chmod +x ./binary
\ No newline at end of file
diff --git a/packages/nasm/2.15.5/environment b/packages/nasm/2.15.5/environment
new file mode 100644
index 0000000..780b668
--- /dev/null
+++ b/packages/nasm/2.15.5/environment
@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+
+# Put 'export' statements here for environment variables
+export PATH=$PWD/bin:$PATH
diff --git a/packages/nasm/2.15.5/metadata.json b/packages/nasm/2.15.5/metadata.json
new file mode 100644
index 0000000..e9d1507
--- /dev/null
+++ b/packages/nasm/2.15.5/metadata.json
@@ -0,0 +1,6 @@
+{
+  "language": "nasm",
+  "version": "2.15.5",
+  "aliases": ["nasm64"],
+  "author": "Thomas Hobson <git@hexf.me>"
+}
diff --git a/packages/nasm/2.15.5/run b/packages/nasm/2.15.5/run
new file mode 100644
index 0000000..53a6099
--- /dev/null
+++ b/packages/nasm/2.15.5/run
@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+
+# Put instructions to run the runtime
+shift
+./binary $*
diff --git a/packages/nasm/2.15.5/test.nasm.asm b/packages/nasm/2.15.5/test.nasm.asm
new file mode 100644
index 0000000..d1e5a57
--- /dev/null
+++ b/packages/nasm/2.15.5/test.nasm.asm
@@ -0,0 +1,16 @@
+SECTION .DATA
+good:     db 'OK',10
+txtlen:  equ $-good
+
+SECTION .TEXT
+GLOBAL _start
+
+_start:
+mov eax,4
+mov ebx,1
+mov ecx,good
+mov edx,txtlen
+int 80h
+mov eax,1
+mov ebx,0
+int 80h
\ No newline at end of file
diff --git a/packages/nasm/2.15.5/test.nasm64.asm b/packages/nasm/2.15.5/test.nasm64.asm
new file mode 100644
index 0000000..20ea316
--- /dev/null
+++ b/packages/nasm/2.15.5/test.nasm64.asm
@@ -0,0 +1,18 @@
+SECTION .data
+    good:	db "OK", 0x0
+    txtlen:	equ $ - good
+
+SECTION .text
+GLOBAL _start
+
+_start:
+    ;sys_write
+    mov rax, 1
+    mov rdi, 1
+    mov rsi, good
+    mov rdx, txtlen
+    syscall
+    ;sys_exit
+    mov rax, 60
+    mov rdi, 0
+    syscall
\ No newline at end of file