easyctf-2017/hexable-autogen/elf.inc
John W c2555cdf41 Added hexable
Simple hex-edit solvable binary problem.
2017-03-12 04:12:21 -05:00

45 lines
487 B
PHP

;;;;;;;;;;;;;;;;;;;;;;;;;;;
; ELF header for stuff
RLIMIT_AS equ 0x09
macro reserve name,size
{
name db 0
repeat size-1
db 0
end repeat
}
macro print message
{
mov eax, message
@@:
cmp byte [eax], 0
jz @f
inc eax
jmp @b
@@:
mov edx, eax
sub edx, message
mov eax, 4
mov ebx, 1
mov ecx, message
int 0x80
}
macro read out_buff, cnt
{
mov ebx, 0
mov eax, 3
mov ecx, out_buff
mov edx, cnt
int 0x80
}
macro exit exitcode
{
mov ebx, exitcode
mov eax, 1
int 0x80
}