概要

逆アセンブラ、見つけたので、WSLでやってみた。

参考にしたページ

環境

windows11
wsl1(wsl2じゃない)
ubuntu 20.04

手順

build-essentialをインストールする。

$ sudo apt install build-essential
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following additional packages will be installed:
  bzip2 dpkg-dev fakeroot libalgorithm-diff-perl libalgorithm-diff-xs-perl libalgorithm-merge-perl libdpkg-perl
  libfakeroot libfile-fcntllock-perl lto-disabled-list
Suggested packages:
  bzip2-doc debian-keyring bzr
The following NEW packages will be installed:
  build-essential bzip2 dpkg-dev fakeroot libalgorithm-diff-perl libalgorithm-diff-xs-perl libalgorithm-merge-perl
  libdpkg-perl libfakeroot libfile-fcntllock-perl lto-disabled-list
0 upgraded, 11 newly installed, 0 to remove and 110 not upgraded.
Need to get 1402 kB of archives.
After this operation, 5882 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://archive.ubuntu.com/ubuntu jammy-updates/main amd64 libdpkg-perl all 1.21.1ubuntu2.3 [237 kB]
Get:2 http://archive.ubuntu.com/ubuntu jammy/main amd64 bzip2 amd64 1.0.8-5build1 [34.8 kB]
Get:3 http://archive.ubuntu.com/ubuntu jammy/main amd64 lto-disabled-list all 24 [12.5 kB]
Get:4 http://archive.ubuntu.com/ubuntu jammy-updates/main amd64 dpkg-dev all 1.21.1ubuntu2.3 [922 kB]
Get:5 http://archive.ubuntu.com/ubuntu jammy/main amd64 build-essential amd64 12.9ubuntu3 [4744 B]
Get:6 http://archive.ubuntu.com/ubuntu jammy/main amd64 libfakeroot amd64 1.28-1ubuntu1 [31.5 kB]
Get:7 http://archive.ubuntu.com/ubuntu jammy/main amd64 fakeroot amd64 1.28-1ubuntu1 [60.4 kB]
Get:8 http://archive.ubuntu.com/ubuntu jammy/main amd64 libalgorithm-diff-perl all 1.201-1 [41.8 kB]
Get:9 http://archive.ubuntu.com/ubuntu jammy/main amd64 libalgorithm-diff-xs-perl amd64 0.04-6build3 [11.9 kB]
Get:10 http://archive.ubuntu.com/ubuntu jammy/main amd64 libalgorithm-merge-perl all 0.08-3 [12.0 kB]
Get:11 http://archive.ubuntu.com/ubuntu jammy/main amd64 libfile-fcntllock-perl amd64 0.22-3build7 [33.9 kB]
Fetched 1402 kB in 2s (563 kB/s)
Selecting previously unselected package libdpkg-perl.
(Reading database ... 29947 files and directories currently installed.)
Preparing to unpack .../00-libdpkg-perl_1.21.1ubuntu2.3_all.deb ...
Unpacking libdpkg-perl (1.21.1ubuntu2.3) ...
Selecting previously unselected package bzip2.
Preparing to unpack .../01-bzip2_1.0.8-5build1_amd64.deb ...
Unpacking bzip2 (1.0.8-5build1) ...
Selecting previously unselected package lto-disabled-list.
Preparing to unpack .../02-lto-disabled-list_24_all.deb ...
Unpacking lto-disabled-list (24) ...
Selecting previously unselected package dpkg-dev.
Preparing to unpack .../03-dpkg-dev_1.21.1ubuntu2.3_all.deb ...
Unpacking dpkg-dev (1.21.1ubuntu2.3) ...
Selecting previously unselected package build-essential.
Preparing to unpack .../04-build-essential_12.9ubuntu3_amd64.deb ...
Unpacking build-essential (12.9ubuntu3) ...
Selecting previously unselected package libfakeroot:amd64.
Preparing to unpack .../05-libfakeroot_1.28-1ubuntu1_amd64.deb ...
Unpacking libfakeroot:amd64 (1.28-1ubuntu1) ...
Selecting previously unselected package fakeroot.
Preparing to unpack .../06-fakeroot_1.28-1ubuntu1_amd64.deb ...
Unpacking fakeroot (1.28-1ubuntu1) ...
Selecting previously unselected package libalgorithm-diff-perl.
Preparing to unpack .../07-libalgorithm-diff-perl_1.201-1_all.deb ...
Unpacking libalgorithm-diff-perl (1.201-1) ...
Selecting previously unselected package libalgorithm-diff-xs-perl.
Preparing to unpack .../08-libalgorithm-diff-xs-perl_0.04-6build3_amd64.deb ...
Unpacking libalgorithm-diff-xs-perl (0.04-6build3) ...
Selecting previously unselected package libalgorithm-merge-perl.
Preparing to unpack .../09-libalgorithm-merge-perl_0.08-3_all.deb ...
Unpacking libalgorithm-merge-perl (0.08-3) ...
Selecting previously unselected package libfile-fcntllock-perl.
Preparing to unpack .../10-libfile-fcntllock-perl_0.22-3build7_amd64.deb ...
Unpacking libfile-fcntllock-perl (0.22-3build7) ...
Setting up lto-disabled-list (24) ...
Setting up libfile-fcntllock-perl (0.22-3build7) ...
Setting up libalgorithm-diff-perl (1.201-1) ...
Setting up bzip2 (1.0.8-5build1) ...
Setting up libfakeroot:amd64 (1.28-1ubuntu1) ...
Setting up fakeroot (1.28-1ubuntu1) ...
update-alternatives: using /usr/bin/fakeroot-sysv to provide /usr/bin/fakeroot (fakeroot) in auto mode
Setting up libdpkg-perl (1.21.1ubuntu2.3) ...
Setting up libalgorithm-diff-xs-perl (0.04-6build3) ...
Setting up libalgorithm-merge-perl (0.08-3) ...
Setting up dpkg-dev (1.21.1ubuntu2.3) ...
Setting up build-essential (12.9ubuntu3) ...
Processing triggers for man-db (2.10.2-1) ...
Processing triggers for libc-bin (2.35-0ubuntu3.4) ...
$ gcc
gcc: fatal error: no input files
compilation terminated.
$ g++
g++: fatal error: no input files
compilation terminated.
$ cc
cc: fatal error: no input files
compilation terminated.
$ gcc
gcc: fatal error: no input files
compilation terminated.
$ gcc --version
gcc (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0
Copyright (C) 2021 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

cmakeをインストールする。

$ sudo apt install cmake
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following additional packages will be installed:
  cmake-data dh-elpa-helper emacsen-common libarchive13 libjsoncpp25 librhash0
Suggested packages:
  cmake-doc ninja-build cmake-format lrzip
The following NEW packages will be installed:
  cmake cmake-data dh-elpa-helper emacsen-common libarchive13 libjsoncpp25 librhash0
0 upgraded, 7 newly installed, 0 to remove and 110 not upgraded.
Need to get 7518 kB of archives.
After this operation, 32.8 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://archive.ubuntu.com/ubuntu jammy/main amd64 libarchive13 amd64 3.6.0-1ubuntu1 [368 kB]
Get:2 http://archive.ubuntu.com/ubuntu jammy/main amd64 libjsoncpp25 amd64 1.9.5-3 [80.0 kB]
Get:3 http://archive.ubuntu.com/ubuntu jammy/main amd64 librhash0 amd64 1.4.2-1ubuntu1 [125 kB]
Get:4 http://archive.ubuntu.com/ubuntu jammy/main amd64 dh-elpa-helper all 2.0.9ubuntu1 [7610 B]
Get:5 http://archive.ubuntu.com/ubuntu jammy/main amd64 emacsen-common all 3.0.4 [14.9 kB]
Get:6 http://archive.ubuntu.com/ubuntu jammy-updates/main amd64 cmake-data all 3.22.1-1ubuntu1.22.04.2 [1913 kB]
Get:7 http://archive.ubuntu.com/ubuntu jammy-updates/main amd64 cmake amd64 3.22.1-1ubuntu1.22.04.2 [5010 kB]
Fetched 7518 kB in 13s (563 kB/s)
Selecting previously unselected package libarchive13:amd64.
(Reading database ... 30493 files and directories currently installed.)
Preparing to unpack .../0-libarchive13_3.6.0-1ubuntu1_amd64.deb ...
Unpacking libarchive13:amd64 (3.6.0-1ubuntu1) ...
Selecting previously unselected package libjsoncpp25:amd64.
Preparing to unpack .../1-libjsoncpp25_1.9.5-3_amd64.deb ...
Unpacking libjsoncpp25:amd64 (1.9.5-3) ...
Selecting previously unselected package librhash0:amd64.
Preparing to unpack .../2-librhash0_1.4.2-1ubuntu1_amd64.deb ...
Unpacking librhash0:amd64 (1.4.2-1ubuntu1) ...
Selecting previously unselected package dh-elpa-helper.
Preparing to unpack .../3-dh-elpa-helper_2.0.9ubuntu1_all.deb ...
Unpacking dh-elpa-helper (2.0.9ubuntu1) ...
Selecting previously unselected package emacsen-common.
Preparing to unpack .../4-emacsen-common_3.0.4_all.deb ...
Unpacking emacsen-common (3.0.4) ...
Selecting previously unselected package cmake-data.
Preparing to unpack .../5-cmake-data_3.22.1-1ubuntu1.22.04.2_all.deb ...
Unpacking cmake-data (3.22.1-1ubuntu1.22.04.2) ...
Selecting previously unselected package cmake.
Preparing to unpack .../6-cmake_3.22.1-1ubuntu1.22.04.2_amd64.deb ...
Unpacking cmake (3.22.1-1ubuntu1.22.04.2) ...
Setting up libarchive13:amd64 (3.6.0-1ubuntu1) ...
Setting up emacsen-common (3.0.4) ...
Setting up dh-elpa-helper (2.0.9ubuntu1) ...
Setting up libjsoncpp25:amd64 (1.9.5-3) ...
Setting up librhash0:amd64 (1.4.2-1ubuntu1) ...
Setting up cmake-data (3.22.1-1ubuntu1.22.04.2) ...
Setting up cmake (3.22.1-1ubuntu1.22.04.2) ...
Processing triggers for man-db (2.10.2-1) ...
Processing triggers for libc-bin (2.35-0ubuntu3.4) ...
$ cmake --version
cmake version 3.22.1

CMake suite maintained and supported by Kitware (kitware.com/cmake).

git cloneする。

$ git clone https://github.com/Koukyosyumei/MyDisassembler.git
Cloning into 'MyDisassembler'...
remote: Enumerating objects: 804, done.
remote: Counting objects: 100% (55/55), done.
remote: Compressing objects: 100% (44/44), done.
remote: Total 804 (delta 26), reused 26 (delta 11), pack-reused 749
Receiving objects: 100% (804/804), 914.08 KiB | 7.55 MiB/s, done.
Resolving deltas: 100% (494/494), done.

cmakeする。

$ cd MyDisassembler
$ ./script/build.sh
-bash: ./script/build.sh: Permission denied
$ cd script
$ chmod 755 build.sh
$ cd ../
$ ./script/build.sh
-- The C compiler identification is GNU 11.4.0
-- The CXX compiler identification is GNU 11.4.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- CMake inatall directory: include
-- Configuring done
-- Generating done
-- Build files have been written to: /home/ore/git/MyDisassembler/build
[ 20%] Building CXX object script/CMakeFiles/mydisas.dir/main.cpp.o
[ 40%] Linking CXX executable mydisas
[ 40%] Built target mydisas
[ 60%] Building CXX object test/CMakeFiles/mydisas-test.dir/main.cpp.o
/home/ore/git/MyDisassembler/test/main.cpp:1:10: fatal error: gtest/gtest.h: No such file or directory
    1 | #include "gtest/gtest.h"
      |          ^~~~~~~~~~~~~~~
compilation terminated.
gmake[2]: *** [test/CMakeFiles/mydisas-test.dir/build.make:76: test/CMakeFiles/mydisas-test.dir/main.cpp.o] Error 1
gmake[1]: *** [CMakeFiles/Makefile2:160: test/CMakeFiles/mydisas-test.dir/all] Error 2
gmake: *** [Makefile:101: all] Error 2

エラーでたので、いじる。

$ ./script/build.sh
-- CMake inatall directory: include
-- Found Python: /usr/bin/python3.10 (found version "3.10.12") found components: Interpreter
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Success
-- Found Threads: TRUE
-- Configuring done
-- Generating done
-- Build files have been written to: /home/ore/git/MyDisassembler/build
Consolidate compiler generated dependencies of target mydisas
[ 15%] Built target mydisas
[ 23%] Building CXX object _deps/googletest-build/googletest/CMakeFiles/gtest.dir/src/gtest-all.cc.o
[ 30%] Linking CXX static library ../../../lib/libgtest.a
[ 30%] Built target gtest
[ 38%] Building CXX object _deps/googletest-build/googletest/CMakeFiles/gtest_main.dir/src/gtest_main.cc.o
[ 46%] Linking CXX static library ../../../lib/libgtest_main.a
[ 46%] Built target gtest_main
[ 53%] Building CXX object test/CMakeFiles/mydisas-test.dir/main.cpp.o
[ 61%] Building CXX object test/CMakeFiles/mydisas-test.dir/decoder.cpp.o
[ 69%] Linking CXX executable mydisas-test
[ 69%] Built target mydisas-test
[ 76%] Building CXX object _deps/googletest-build/googlemock/CMakeFiles/gmock.dir/src/gmock-all.cc.o
[ 84%] Linking CXX static library ../../../lib/libgmock.a
[ 84%] Built target gmock
[ 92%] Building CXX object _deps/googletest-build/googlemock/CMakeFiles/gmock_main.dir/src/gmock_main.cc.o
[100%] Linking CXX static library ../../../lib/libgmock_main.a
[100%] Built target gmock_main
$ ./build/script/mydisas example/jmp.o
terminate called after throwing an instance of 'std::runtime_error'
  what():  Failed to open object file: example/jmp.o
Aborted

exampleのjmp.oがないので、作る。

$ ls
call.s  jmp.s  lock.s  one_byte.s  one_byte_imm.s  rep.s  two_byte_opcode.s
$ as -o jmp.o jmp.s
$ ls
call.s  jmp.o  jmp.s  lock.s  one_byte.s  one_byte_imm.s  rep.s  two_byte_opcode.s
$ cd ../
$ ./build/script/mydisas example/jmp.o

section: .text ----

40 <_start>:
 40: mov  eax 0x00000000                      ( b8 0 0 0 0 )
 45: cmp  eax 0x00                            ( 83 f8 0 )
 48: jz 4e <zero_label> ; relative offset = 4 ( 74 4 )
 4a: jmp 52 <end_label> ; relative offset = 6 ( eb 6 )
 4c: jmp 40 <_start> ; relative offset = -14  ( eb f2 )

4e <zero_label>:
 4e: push  rsp                                ( 54 )
 4f: xor  eax eax                             ( 31 c0 )
 51: ret                                      ( c3 )

52 <end_label>:
 52: push  rdi                                ( 57 )
 53: xor  ecx ecx                             ( 31 c9 )
 55: ret                                      ( c3 )
-------------------
Done!

以上。