Initial commit

Makefile

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+NASM=nasm
+LD=ld
+GZIP=gzip
+BASE64=base64
+
+ASFLAGS=-felf64
+LDFLAGS=-s -melf_x86_64
+
+all: amd64elfquine check
+
+dist: amd64elfquine amd64elfquine.gz amd64elfquine.gz.txt 
+	md5sum $^ > MD5SUMS;\
+	sha256sum $^ > SHA256SUMS;\
+	sha512sum $^ > SHA512SUMS;
+
+amd64elfquine.gz.txt: amd64elfquine.gz
+	$(BASE64)  > $@ < $<
+
+amd64elfquine.gz: amd64elfquine
+	$(GZIP) -9 -c > $@ < $<
+
+amd64elfquine: amd64elfquine.o
+	$(LD) $(LDFLAGS) $< -o $@
+
+amd64elfquine.o: amd64elfquine.asm
+	$(NASM) $(ASFLAGS) $< -o $@
+
+.PHONY: clean dist check
+
+check: amd64elfquine
+	/bin/sh check.sh
+
+clean:
+	-rm -fv amd64elfquine.o
+
+distclean: clean
+	-rm -fv amd64elfquine amd64elfquine.gz amd64elfquine.gz.txt MD5SUMS SHA256SUMS SHA512SUMS

README.txt

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+amd64elfquine : A GNU/Linux AMD X86-64 ELF Quine.
+===============
+	Produce itself on stdout without reading outside .data section.
+
+Compile :
+---------
+	# Needs nasm, ld
+	# And sh, hexdump, diff, for check.sh
+ 	make
+
+Produce a copy :
+----------------
+	./amd64elfquine > amd64elfquine_copy
+
+Produce distributable copies :
+------------------------------
+	# Needs gzip, base64, md5sum, sha256sum, sha512sum
+	make dist
+

amd64elfquine.asm

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+; Copyright (C) 2020 Weber Yann <amd64elfquine@yannweb.net>
+; 
+; This program is free software; you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; any later version.
+; 
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+; 
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <http://www.gnu.org/licenses/>.
+;
+; amd64elfquine : A GNU/Linux AMD X86-64 ELF Quine.
+; ===============
+; 	Produce itself on stdout without reading outside .data section.
+; 
+; Compile :
+; ---------
+; 	# Needs nasm, ld
+; 	# And sh, hexdump, diff, for check.sh
+;  	make
+; 
+; Produce a copy :
+; ----------------
+; 	./amd64elfquine > amd64elfquine_copy
+; 
+; Produce distributable copies :
+; ------------------------------
+; 	# Needs gzip, base64, md5sum, sha256sum, sha512sum
+; 	make dist
+; 
+
+[bits 64]
+section .data
+
+	elf_head:
+		dw 0x457f, 0x464c, 0x0102, 0x0001, 0x0000, 0x0000, 0x0000, 0x0000
+		dw 0x0002, 0x003e, 0x0001, 0x0000, 0x1000, 0x0040, 0x0000, 0x0000
+		dw 0x0040, 0x0000, 0x0000, 0x0000, 0x4230, 0x0000, 0x0000, 0x0000
+		dw 0x0000, 0x0000, 0x0040, 0x0038, 0x0004, 0x0040, 0x0005, 0x0004
+		dw 0x0001, 0x0000, 0x0004, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000
+		dw 0x0000, 0x0040, 0x0000, 0x0000, 0x0000, 0x0040, 0x0000, 0x0000
+		dw 0x0140, 0x0000, 0x0000, 0x0000, 0x0140, 0x0000, 0x0000, 0x0000
+		dw 0x1000, 0x0000, 0x0000, 0x0000, 0x0001, 0x0000, 0x0005, 0x0000
+		dw 0x1000, 0x0000, 0x0000, 0x0000, 0x1000, 0x0040, 0x0000, 0x0000
+		dw 0x1000, 0x0040, 0x0000, 0x0000, 0x00c6, 0x0000, 0x0000, 0x0000
+		dw 0x00c6, 0x0000, 0x0000, 0x0000, 0x1000, 0x0000, 0x0000, 0x0000
+		dw 0x0001, 0x0000, 0x0006, 0x0000, 0x2000, 0x0000, 0x0000, 0x0000
+		dw 0x2000, 0x0040, 0x0000, 0x0000, 0x2000, 0x0040, 0x0000, 0x0000
+		dw 0x2200, 0x0000, 0x0000, 0x0000, 0x2200, 0x0000, 0x0000, 0x0000
+		dw 0x1000, 0x0000, 0x0000, 0x0000, 0x0004, 0x0000, 0x0004, 0x0000
+		dw 0x0120, 0x0000, 0x0000, 0x0000, 0x0120, 0x0040, 0x0000, 0x0000
+		dw 0x0120, 0x0040, 0x0000, 0x0000, 0x0020, 0x0000, 0x0000, 0x0000
+		dw 0x0020, 0x0000, 0x0000, 0x0000, 0x0008, 0x0000, 0x0000, 0x0000
+		dw 0x0004, 0x0000, 0x0010, 0x0000, 0x0005, 0x0000, 0x4e47, 0x0055
+		dw 0x0001, 0xc000, 0x0004, 0x0000, 0x0001
+		times 0xec6 db 0
+
+	code:
+		; writing elf head
+		mov rax, 1 ; write
+		mov rdi, rax ; stdout
+		mov rsi, elf_head
+		mov rdx, 0x1000
+		syscall
+		cmp rax, 0
+		jl code.err
+		; writing text section
+		; _start
+		mov rax, 1 ; write
+		mov rdi, rax ; stdout
+		mov rsi, code
+		mov rdx, 0x1000
+		syscall
+		cmp rax, 0
+		jl code.err
+		; writing data section
+		; elf_head
+		mov rax, 1 ; write
+		mov rdi, rax ; stdout
+		mov rsi, elf_head
+		mov rdx, 0x1000
+		syscall
+		cmp rax, 0
+		jl code.err
+		; code
+		mov rax, 1 ; write
+		mov rdi, rax ; stdout
+		mov rsi, code
+		mov rdx, 0x1000
+		syscall
+		cmp rax, 0
+		jl code.err
+		; text section end
+		; elf_foot
+		mov rax, 1
+		mov rdi, rax ; stdout
+		mov rsi, elf_foot
+		mov rdx, elf_foot_data_sz
+		syscall
+		; data section end
+		; elf_foot
+		mov rax, 1
+		mov rdi, rax ; stdout
+		mov rsi, elf_foot
+		mov rdx, elf_foot_sz
+		syscall
+
+		code.exit:
+			mov rax, 60 ; exit
+			xor rdi, rdi
+			syscall
+
+		code.err:
+			mov rdi, rax
+			mov rax, 60 ; exit
+			syscall
+		times 0xf3a db 0
+
+	elf_foot:
+		dw 0x2e00, 0x6873, 0x7473, 0x7472, 0x6261, 0x2e00, 0x6f6e, 0x6574
+		dw 0x672e, 0x756e, 0x702e, 0x6f72, 0x6570, 0x7472, 0x0079, 0x742e
+		dw 0x7865, 0x0074, 0x642e, 0x7461, 0x0061, 0x0000, 0x0000, 0x0000
+		dw 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000
+		dw 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000
+		dw 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000
+		dw 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000
+		dw 0x000b, 0x0000, 0x0007, 0x0000, 0x0002, 0x0000, 0x0000, 0x0000
+		dw 0x0120, 0x0040, 0x0000, 0x0000, 0x0120, 0x0000, 0x0000, 0x0000
+		dw 0x0020, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000
+		dw 0x0008, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000
+		dw 0x001e, 0x0000, 0x0001, 0x0000, 0x0006, 0x0000, 0x0000, 0x0000
+		dw 0x1000, 0x0040, 0x0000, 0x0000, 0x1000, 0x0000, 0x0000, 0x0000
+		dw 0x00c6, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000
+		dw 0x0010, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000
+		dw 0x0024, 0x0000, 0x0001, 0x0000, 0x0003, 0x0000, 0x0000, 0x0000
+		dw 0x2000, 0x0040, 0x0000, 0x0000, 0x2000, 0x0000, 0x0000, 0x0000
+		dw 0x2200, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000
+		dw 0x0004, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000
+		dw 0x0001, 0x0000, 0x0003, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000
+		dw 0x0000, 0x0000, 0x0000, 0x0000, 0x4200, 0x0000, 0x0000, 0x0000
+		dw 0x002a, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000
+		dw 0x0001
+		times 0xe db 0
+	elf_foot_sz: equ $ - elf_foot
+		times 0x90 db 0 ; .data allign
+	elf_foot_data_sz: equ $ - elf_foot 
+
+section .text
+global _start
+_start:
+	; writing elf head
+	mov rax, 1 ; write
+	mov rdi, rax ; stdout
+	mov rsi, elf_head
+	mov rdx, 0x1000
+	syscall
+	cmp rax, 0
+	jl .err
+	; writing text section
+	; _start
+	mov rax, 1 ; write
+	mov rdi, rax ; stdout
+	mov rsi, code
+	mov rdx, 0x1000
+	syscall
+	cmp rax, 0
+	jl .err
+	; writing data section
+	; elf_head
+	mov rax, 1 ; write
+	mov rdi, rax ; stdout
+	mov rsi, elf_head
+	mov rdx, 0x1000
+	syscall
+	cmp rax, 0
+	jl .err
+	; code
+	mov rax, 1 ; write
+	mov rdi, rax ; stdout
+	mov rsi, code
+	mov rdx, 0x1000
+	syscall
+	cmp rax, 0
+	jl .err
+	; text section end
+	; elf_foot
+	mov rax, 1
+	mov rdi, rax ; stdout
+	mov rsi, elf_foot
+	mov rdx, elf_foot_data_sz
+	syscall
+	; data section end
+	; elf_foot
+	mov rax, 1
+	mov rdi, rax ; stdout
+	mov rsi, elf_foot
+	mov rdx, elf_foot_sz
+	syscall
+
+	.exit:
+		mov rax, 60 ; exit
+		xor rdi, rdi
+		syscall
+
+	.err:
+		
+		mov rdi, rax
+		mov rax, 60 ; exit
+		syscall

check.sh

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+#!/bin/sh
+
+tmpcopy=$(tempfile -s elfquine_copy)
+dump1=$(tempfile -s elfquine.hexdump)
+dump2=$(tempfile -s elfquine_copy.hexdump)
+
+./amd64elfquine > $tmpcopy
+hexdump -C amd64elfquine > $dump1
+hexdump -C $tmpcopy > $dump2
+
+diff -rupN $dump1 $dump2 && echo "[Success] No differences"
+ret=$?
+rm $tmpcopy $dump1 $dump2
+exit $ret