Zygentoma    

section .text
global _start
_start:

mov edx,len
mov ecx,msg
mov ebx,1
mov eax,4
int 0x80

mov ebx,0
mov eax,1
int 0x80

section .data
msg db 'Hello world',0x0A
len equ $ - msg

nasm -f elf -g <name>.asm && ld -o <name> <name>.o

nasm -f elf64 -g <name>.asm && ld -o <name> <name>.o

./<name>

section .text
global _start
_start:

call printbttls

mov edx,wall_l
mov ecx,wall
mov ebx,1
mov eax,4
int 0x80 ; sys_write

call printbttls

mov edx,beer_l
mov ecx,beer
mov ebx,1
mov eax,4
int 0x80 ; sys_write

mov al,[nr]
mov ah,[nr+1]

dec ah
cmp ah,0x2F
jne nureinestelle
mov ah,0x39
dec al
nureinestelle:
cmp ax,0x392F
je ende

mov [nr],al
mov [nr+1],ah

mov edx,take_l
mov ecx,take
mov ebx,1
mov eax,4
int 0x80 ; sys_write

call printbttls

mov edx,wall_l
mov ecx,wall
mov ebx,1
mov eax,4
int 0x80 ; sys_write

mov edx,1
mov ecx,nl
mov ebx,1
mov eax,4
int 0x80 ; sys_write

jmp _start
ende:

mov edx,store_l
mov ecx,store
mov ebx,1
mov eax,4
int 0x80 ; sys_write

mov ax,0x3939
mov [nr],al
mov [nr+1],ah

call printbttls

mov edx,wall_l
mov ecx,wall
mov ebx,1
mov eax,4
int 0x80 ; sys_write

mov ebx,0
mov eax,1
int 0x80 ; sys_exit(0)

printbttls:
mov al,[nr]
mov ah,[nr+1]
cmp al,0x30
je erstenull

mov edx,2
mov ecx,nr
mov ebx,1
mov eax,4
int 0x80 ; sys_write
jmp rest

erstenull:

cmp ah,0x30
je zweitenull

mov edx,1
mov ecx,nr+1
mov ebx,1
mov eax,4
int 0x80 ; sys_write
jmp rest

zweitenull:
mov edx,no_l
mov ecx,no
mov ebx,1
mov eax,4
int 0x80 ; sys_write

rest:

mov al,[nr]
mov ah,[nr+1]
cmp ax,0x3130
je singular

mov edx,bttl_l
mov ecx,bttl
mov ebx,1
mov eax,4
int 0x80 ; sys_write
ret

singular:
mov edx,bttls_l
mov ecx,bttls
mov ebx,1
mov eax,4
int 0x80 ; sys_write
ret

section .data

nr db '99'
bttl db ' bottles '
bttl_l equ $ - bttl
bttls db ' bottle '
bttls_l equ $ - bttls
wall db 'of beer on the wall',0x0A
wall_l equ $ - wall
beer db 'of beer',0x0A
beer_l equ $ - beer
no db 'No more'
no_l equ $ - no
take db 'Take one down, pass it around',0x0A
take_l equ $ - take
store db 'Go to the store, buy some more',0x0A
store_l equ $ - store
nl equ store + store_l - 1

; FILE syscall_32_int80.inc

%define _syscall    int 0x80
%define _nr         eax
%define _arg1       ebx
%define _arg2       ecx
%define _arg3       edx
%define _arg4       esi
%define _arg5       edi
%define _arg6       ebp

%define _sys_setup 0
%define _sys_exit 1
%define _sys_fork 2
%define _sys_read 3
%define _sys_write 4
%define _sys_open 5
%define _sys_close 6
%define _sys_waitpid 7
%define _sys_creat 8
%define _sysink 9
%define _sys_unlink 10
%define _sys_execve 11
%define _sys_chdir 12
%define _sys_time 13
%define _sys_mknod 14
%define _sys_chmod 15
%define _syschown 16
%define _sys_break 17
%define _sys_oldstat 18
%define _sysseek 19
%define _sys_getpid 20
%define _sys_mount 21
%define _sys_umount 22
%define _sys_setuid 23
%define _sys_getuid 24
%define _sys_stime 25
%define _sys_ptrace 26
%define _sys_alarm 27
%define _sys_oldfstat 28
%define _sys_pause 29
%define _sys_utime 30
%define _sys_stty 31
%define _sys_gtty 32
%define _sys_access 33
%define _sys_nice 34
%define _sys_ftime 35
%define _sys_sync 36
%define _sys_kill 37
%define _sys_rename 38
%define _sys_mkdir 39
%define _sys_rmdir 40
%define _sys_dup 41
%define _sys_pipe 42
%define _sys_times 43
%define _sys_prof 44
%define _sys_brk 45
%define _sys_setgid 46
%define _sys_getgid 47
%define _sys_signal 48
%define _sys_geteuid 49
%define _sys_getegid 50
%define _sys_acct 51
%define _sys_umount2 52
%define _sysock 53
%define _sys_ioctl 54
%define _sys_fcntl 55
%define _sys_mpx 56
%define _sys_setpgid 57
%define _sys_ulimit 58
%define _sys_oldolduname 59
%define _sys_umask 60
%define _sys_chroot 61
%define _sys_ustat 62
%define _sys_dup2 63
%define _sys_getppid 64
%define _sys_getpgrp 65
%define _sys_setsid 66
%define _sys_sigaction 67
%define _sys_sgetmask 68
%define _sys_ssetmask 69
%define _sys_setreuid 70
%define _sys_setregid 71
%define _sys_sigsuspend 72
%define _sys_sigpending 73
%define _sys_sethostname 74
%define _sys_setrlimit 75
%define _sys_getrlimit 76
%define _sys_getrusage 77
%define _sys_gettimeofday 78
%define _sys_settimeofday 79
%define _sys_getgroups 80
%define _sys_setgroups 81
%define _sys_select 82
%define _sys_symlink 83
%define _sys_oldlstat 84
%define _sys_readlink 85
%define _sys_uselib 86
%define _sys_swapon 87
%define _sys_reboot 88
%define _sys_readdir 89
%define _sys_mmap 90
%define _sys_munmap 91
%define _sys_truncate 92
%define _sys_ftruncate 93
%define _sys_fchmod 94
%define _sys_fchown 95
%define _sys_getpriority 96
%define _sys_setpriority 97
%define _sys_profil 98
%define _sys_statfs 99
%define _sys_fstatfs 100
%define _sys_ioperm 101
%define _sys_socketcall 102
%define _sys_syslog 103
%define _sys_setitimer 104
%define _sys_getitimer 105
%define _sys_stat 106
%define _sysstat 107
%define _sys_fstat 108
%define _sys_olduname 109
%define _sys_iopl 110
%define _sys_vhangup 111
%define _sys_idle 112
%define _sys_vm86old 113
%define _sys_wait4 114
%define _sys_swapoff 115
%define _sys_sysinfo 116
%define _sys_ipc 117
%define _sys_fsync 118
%define _sys_sigreturn 119
%define _sys_clone 120
%define _sys_setdomainname 121
%define _sys_uname 122
%define _sys_modifydt 123
%define _sys_adjtimex 124
%define _sys_mprotect 125
%define _sys_sigprocmask 126
%define _sys_create_module 127
%define _sys_init_module 128
%define _sys_delete_module 129
%define _sys_get_kernel_syms 130
%define _sys_quotactl 131
%define _sys_getpgid 132
%define _sys_fchdir 133
%define _sys_bdflush 134
%define _sys_sysfs 135
%define _sys_personality 136
%define _sys_afs_syscall 137
%define _sys_setfsuid 138
%define _sys_setfsgid 139
%define _sys_lseek 140
%define _sys_getdents 141
%define _sys__newselect 142
%define _sys_flock 143
%define _sys_msync 144
%define _sys_readv 145
%define _sys_writev 146
%define _sys_getsid 147
%define _sys_fdatasync 148
%define _sys__sysctl 149
%define _sys_mlock 150
%define _sys_munlock 151
%define _sys_mlockall 152
%define _sys_munlockall 153
%define _sys_sched_setparam 154
%define _sys_sched_getparam 155
%define _sys_sched_setscheduler 156
%define _sys_sched_getscheduler 157
%define _sys_sched_yield 158
%define _sys_sched_get_priority_max 159
%define _sys_sched_get_priority_min 160
%define _sys_sched_rr_get_interval 161
%define _sys_nanosleep 162
%define _sys_mremap 163
%define _sys_setresuid 164
%define _sys_getresuid 165
%define _sys_vm86 166
%define _sys_query_module 167
%define _sys_poll 168
%define _sys_nfsservctl 169
%define _sys_setresgid 170
%define _sys_getresgid 171
%define _sys_prctl 172
%define _sys_rt_sigreturn 173
%define _sys_rt_sigaction 174
%define _sys_rt_sigprocmask 175
%define _sys_rt_sigpending 176
%define _sys_rt_sigtimedwait 177
%define _sys_rt_sigqueueinfo 178
%define _sys_rt_sigsuspend 179
%define _sys_pread 180
%define _sys_pwrite 181
%define _sys_chown 182
%define _sys_getcwd 183
%define _sys_capget 184
%define _sys_capset 185
%define _sys_sigaltstack 186
%define _sys_sendfile 187
%define _sys_getpmsg 188
%define _sys_putpmsg 189
%define _sys_vfork 190

; FILE syscall_64_syscall.inc

%define _syscall    syscall
%define _nr         rax
%define _arg1       rdi
%define _arg2       rsi
%define _arg3       rdx
%define _arg4       rcx
%define _arg5       r8
%define _arg6       r9

%define _sys_read 0
%define _sys_write 1
%define _sys_open 2
%define _sys_close 3
%define _sys_stat 4
%define _sys_fstat 5
%define _sysstat 6
%define _sys_poll 7
%define _sysseek 8
%define _sys_mmap 9
%define _sys_mprotect 10
%define _sys_munmap 11
%define _sys_brk 12
%define _sys_rt_sigaction 13
%define _sys_rt_sigprocmask 14
%define _sys_rt_sigreturn 15
%define _sys_ioctl 16
%define _sys_pread64 17
%define _sys_pwrite64 18
%define _sys_readv 19
%define _sys_writev 20
%define _sys_access 21
%define _sys_pipe 22
%define _sys_select 23
%define _sys_sched_yield 24
%define _sys_mremap 25
%define _sys_msync 26
%define _sys_mincore 27
%define _sys_madvise 28
%define _sys_shmget 29
%define _sys_shmat 30
%define _sys_shmctl 31
%define _sys_dup 32
%define _sys_dup2 33
%define _sys_pause 34
%define _sys_nanosleep 35
%define _sys_getitimer 36
%define _sys_alarm 37
%define _sys_setitimer 38
%define _sys_getpid 39
%define _sys_sendfile 40
%define _sys_socket 41
%define _sys_connect 42
%define _sys_accept 43
%define _sys_sendto 44
%define _sys_recvfrom 45
%define _sys_sendmsg 46
%define _sys_recvmsg 47
%define _sys_shutdown 48
%define _sys_bind 49
%define _sysisten 50
%define _sys_getsockname 51
%define _sys_getpeername 52
%define _sys_socketpair 53
%define _sys_setsockopt 54
%define _sys_getsockopt 55
%define _sys_clone 56
%define _sys_fork 57
%define _sys_vfork 58
%define _sys_execve 59
%define _sys_exit 60
%define _sys_wait4 61
%define _sys_kill 62
%define _sys_uname 63
%define _sys_semget 64
%define _sys_semop 65
%define _sys_semctl 66
%define _sys_shmdt 67
%define _sys_msgget 68
%define _sys_msgsnd 69
%define _sys_msgrcv 70
%define _sys_msgctl 71
%define _sys_fcntl 72
%define _sys_flock 73
%define _sys_fsync 74
%define _sys_fdatasync 75
%define _sys_truncate 76
%define _sys_ftruncate 77
%define _sys_getdents 78
%define _sys_getcwd 79
%define _sys_chdir 80
%define _sys_fchdir 81
%define _sys_rename 82
%define _sys_mkdir 83
%define _sys_rmdir 84
%define _sys_creat 85
%define _sysink 86
%define _sys_unlink 87
%define _sys_symlink 88
%define _sys_readlink 89
%define _sys_chmod 90
%define _sys_fchmod 91
%define _sys_chown 92
%define _sys_fchown 93
%define _syschown 94
%define _sys_umask 95
%define _sys_gettimeofday 96
%define _sys_getrlimit 97
%define _sys_getrusage 98
%define _sys_sysinfo 99
%define _sys_times 100
%define _sys_ptrace 101
%define _sys_getuid 102
%define _sys_syslog 103
%define _sys_getgid 104
%define _sys_setuid 105
%define _sys_setgid 106
%define _sys_geteuid 107
%define _sys_getegid 108
%define _sys_setpgid 109
%define _sys_getppid 110
%define _sys_getpgrp 111
%define _sys_setsid 112
%define _sys_setreuid 113
%define _sys_setregid 114
%define _sys_getgroups 115
%define _sys_setgroups 116
%define _sys_setresuid 117
%define _sys_getresuid 118
%define _sys_setresgid 119
%define _sys_getresgid 120
%define _sys_getpgid 121
%define _sys_setfsuid 122
%define _sys_setfsgid 123
%define _sys_getsid 124
%define _sys_capget 125
%define _sys_capset 126
%define _sys_rt_sigpending 127
%define _sys_rt_sigtimedwait 128
%define _sys_rt_sigqueueinfo 129
%define _sys_rt_sigsuspend 130
%define _sys_sigaltstack 131
%define _sys_utime 132
%define _sys_mknod 133
%define _sys_uselib 134
%define _sys_personality 135
%define _sys_ustat 136
%define _sys_statfs 137
%define _sys_fstatfs 138
%define _sys_sysfs 139
%define _sys_getpriority 140
%define _sys_setpriority 141
%define _sys_sched_setparam 142
%define _sys_sched_getparam 143
%define _sys_sched_setscheduler 144
%define _sys_sched_getscheduler 145
%define _sys_sched_get_priority_max 146
%define _sys_sched_get_priority_min 147
%define _sys_sched_rr_get_interval 148
%define _sys_mlock 149
%define _sys_munlock 150
%define _sys_mlockall 151
%define _sys_munlockall 152
%define _sys_vhangup 153
%define _sys_modifydt 154
%define _sys_pivot_root 155
%define _sys__sysctl 156
%define _sys_prctl 157
%define _sys_arch_prctl 158
%define _sys_adjtimex 159
%define _sys_setrlimit 160
%define _sys_chroot 161
%define _sys_sync 162
%define _sys_acct 163
%define _sys_settimeofday 164
%define _sys_mount 165
%define _sys_umount2 166
%define _sys_swapon 167
%define _sys_swapoff 168
%define _sys_reboot 169
%define _sys_sethostname 170
%define _sys_setdomainname 171
%define _sys_iopl 172
%define _sys_ioperm 173
%define _sys_create_module 174
%define _sys_init_module 175
%define _sys_delete_module 176
%define _sys_get_kernel_syms 177
%define _sys_query_module 178
%define _sys_quotactl 179
%define _sys_nfsservctl 180
%define _sys_getpmsg 181
%define _sys_putpmsg 182
%define _sys_afs_syscall 183
%define _sys_tuxcall 184
%define _sys_security 185
%define _sys_gettid 186
%define _sys_readahead 187
%define _sys_setxattr 188
%define _syssetxattr 189
%define _sys_fsetxattr 190
%define _sys_getxattr 191
%define _sysgetxattr 192
%define _sys_fgetxattr 193
%define _sysistxattr 194
%define _syslistxattr 195
%define _sys_flistxattr 196
%define _sys_removexattr 197
%define _sysremovexattr 198
%define _sys_fremovexattr 199
%define _sys_tkill 200
%define _sys_time 201
%define _sys_futex 202
%define _sys_sched_setaffinity 203
%define _sys_sched_getaffinity 204
%define _sys_set_thread_area 205
%define _sys_io_setup 206
%define _sys_io_destroy 207
%define _sys_io_getevents 208
%define _sys_io_submit 209
%define _sys_io_cancel 210
%define _sys_get_thread_area 211
%define _sysookup_dcookie 212
%define _sys_epoll_create 213

section .text
global _start
_start:

;%include "syscall_32_int80.inc"
%include "syscall_64_syscall.inc"

call printbttls

mov _arg3,wall_l
mov _arg2,wall
mov _arg1,1
mov _nr,_sys_write
_syscall

call printbttls

mov _arg3,beer_l
mov _arg2,beer
mov _arg1,1
mov _nr,_sys_write
_syscall

mov al,[nr]
mov ah,[nr+1]

dec ah
cmp ah,0x2F
jne nureinestelle
mov ah,0x39
dec al
nureinestelle:
cmp ax,0x392F
je ende

mov [nr],al
mov [nr+1],ah

mov _arg3,take_l
mov _arg2,take
mov _arg1,1
mov _nr,_sys_write
_syscall

call printbttls

mov _arg3,wall_l
mov _arg2,wall
mov _arg1,1
mov _nr,_sys_write
_syscall

mov _arg3,1
mov _arg2,nl
mov _arg1,1
mov _nr,_sys_write
_syscall

jmp _start
ende:

mov _arg3,store_l
mov _arg2,store
mov _arg1,1
mov _nr,_sys_write
_syscall

mov ax,0x3939
mov [nr],al
mov [nr+1],ah

call printbttls

mov _arg3,wall_l
mov _arg2,wall
mov _arg1,1
mov _nr,_sys_write
_syscall

mov _arg1,0
mov _nr,_sys_exit
_syscall

printbttls:
mov al,[nr]
mov ah,[nr+1]
cmp al,0x30
je erstenull

mov _arg3,2
mov _arg2,nr
mov _arg1,1
mov _nr,_sys_write
_syscall
jmp rest

erstenull:

cmp ah,0x30
je zweitenull

mov _arg3,1
mov _arg2,nr+1
mov _arg1,1
mov _nr,_sys_write
_syscall
jmp rest

zweitenull:
mov _arg3,no_l
mov _arg2,no
mov _arg1,1
mov _nr,_sys_write
_syscall

rest:

mov al,[nr]
mov ah,[nr+1]
cmp ax,0x3130
je singular

mov _arg3,bttl_l
mov _arg2,bttl
mov _arg1,1
mov _nr,_sys_write
_syscall
ret

singular:
mov _arg3,bttls_l
mov _arg2,bttls
mov _arg1,1
mov _nr,_sys_write
_syscall
ret

section .data

nr db '99'
bttl db ' bottles '
bttl_l equ $ - bttl
bttls db ' bottle '
bttls_l equ $ - bttls
wall db 'of beer on the wall',0x0A
wall_l equ $ - wall
beer db 'of beer',0x0A
beer_l equ $ - beer
no db 'No more'
no_l equ $ - no
take db 'Take one down, pass it around',0x0A
take_l equ $ - take
store db 'Go to the store, buy some more',0x0A
store_l equ $ - store
nl equ store + store_l - 1