Enter si again:
|-Register group: general------------------------------------------------------------------------------------------------------------------------------------------------| |eax 0x4 4 ecx 0x804a000 134520832 edx 0x0 0 | |ebx 0x1 1 esp 0xffffd950 0xffffd950 ebp 0x0 0x0 | |esi 0x0 0 edi 0x0 0 eip 0x8049010 0x8049010 <_start+16 | |eflags 0x202 [ IF ] cs 0x23 35 ss 0x2b 43 | |ds 0x2b 43 es 0x2b 43 fs 0x0 0 | |gs 0x0 0 k0 0x0 0 k1 0x0 0 | |k2 0x0 0 k3 0x0 0 k4 0x0 0 | |k5 0x0 0 k6 0x0 0 k7 0x0 0 | | | | | | | | | | | | | | | | | | | | | | | |------------------------------------------------------------------------------------------------------------------------------------------------------------------------| |B+ 0x8049000 <_start> mov eax,0x4 | | 0x8049005 <_start+5> mov ebx,0x1 | | 0x804900a <_start+10> lea ecx,ds:0x804a000 | | > 0x8049010 <_start+16> mov edx,0xd | | 0x8049015 <_start+21> int 0x80 | | 0x8049017 <print_hex_message> mov eax,0x4 | | 0x804901c <print_hex_message+5> mov ebx,0x1 | | 0x8049021 <print_hex_message+10> lea ecx,ds:0x804a00d | | 0x8049027 <print_hex_message+16> mov edx,0xd | | 0x804902c <print_hex_message+21> int 0x80 | | 0x804902e <exit_program> mov eax,0x1 | | 0x8049033 <exit_program+5> mov ebx,0x0 | | 0x8049038 <exit_program+10> int 0x80 | | 0x804903a add BYTE PTR [eax],al | | 0x804903c add BYTE PTR [eax],al | | 0x804903e add BYTE PTR [eax],al | | 0x8049040 add BYTE PTR [eax],al | | 0x8049042 add BYTE PTR [eax],al | | 0x8049044 add BYTE PTR [eax],al | | 0x8049046 add BYTE PTR [eax],al | |------------------------------------------------------------------------------------------------------------------------------------------------------------------------| native process 84922 In: _start L?? PC: 0x8049010 (gdb) lay reg (gdb) break _start Breakpoint 1 at 0x8049000 (gdb) run Starting program: /home/pete/Documents/ASM/hello_world/x86/hello_x86 Breakpoint 1, 0x08049000 in _start () (gdb) si 0x08049005 in _start () (gdb) si 0x0804900a in _start () (gdb) si 0x08049010 in _start () (gdb)
Now we can see our ecx register has been loaded with a memory address. This should be the memory address of our message label.