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ercoppa/symbolic_code.s

Last active November 15, 2016 13:44
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Example of symbolic code
Raw
symbolic_code.s
.globl foo
.text
foo:
movl 4(%esp), %eax # load arg0 into eax
leal (foo_real), %ecx
jmp *%ecx
.data
foo_real:
subl $666, %eax # trigger input is 666
addb $0xeb, %al
leal (L1), %edx
leal (L2), %ecx
subl %edx, %ecx
movb %cl, %ah
leal (L1), %ecx
movw %ax, -2(%ecx)
nop
nop
L1:
movl $1, %eax
jmp exit
L2:
movl $2, %eax
exit:
ret
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