gdb -q helloworld-no-pie
Reading symbols from helloworld-no-pie...done.
gdb-peda$ set env LD_BIND_NOW
Setting environment variable "LD_BIND_NOW" to null value.
gdb-peda$ disp/gx 0x601018
1: x/xg 0x601018  0x601018:     0x00000000004003f6
gdb-peda$ b main
Breakpoint 1 at 0x4004eb: file helloworld.c, line 21.
gdb-peda$ r
Starting program: /home/ubuntu/Dropbox/Workspace/c/doodle/helloworld-no-pie
[----------------------------------registers-----------------------------------]
RAX: 0x4004e7 (<main>:  push   rbp)
RBX: 0x0
RCX: 0x400500 (<__libc_csu_init>:       push   r15)
RDX: 0x7fffffffe348 --> 0x7fffffffe608 ("HOME=/home/ubuntu")
RSI: 0x7fffffffe338 --> 0x7fffffffe5ce ("/home/ubuntu/Dropbox/Workspace/c/doodle/helloworld-no-pie")
RDI: 0x1
RBP: 0x7fffffffe250 --> 0x400500 (<__libc_csu_init>:    push   r15)
RSP: 0x7fffffffe250 --> 0x400500 (<__libc_csu_init>:    push   r15)
RIP: 0x4004eb (<main+4>:        lea    rdi,[rip+0x92]        # 0x400584)
R8 : 0x7ffff7dd0d80 --> 0x0
R9 : 0x7ffff7dd0d80 --> 0x0
R10: 0x0
R11: 0x1
R12: 0x400400 (<_start>:        xor    ebp,ebp)
R13: 0x7fffffffe330 --> 0x1
R14: 0x0
R15: 0x0
EFLAGS: 0x246 (carry PARITY adjust ZERO sign trap INTERRUPT direction overflow)
[-------------------------------------code-------------------------------------]
   0x4004e5 <frame_dummy+5>:    jmp    0x400470 <register_tm_clones>
   0x4004e7 <main>:     push   rbp
   0x4004e8 <main+1>:   mov    rbp,rsp
=> 0x4004eb <main+4>:   lea    rdi,[rip+0x92]        # 0x400584
   0x4004f2 <main+11>:  call   0x4003f0 <puts@plt>
   0x4004f7 <main+16>:  mov    eax,0x0
   0x4004fc <main+21>:  pop    rbp
   0x4004fd <main+22>:  ret
[------------------------------------stack-------------------------------------]
0000| 0x7fffffffe250 --> 0x400500 (<__libc_csu_init>:   push   r15)
0008| 0x7fffffffe258 --> 0x7ffff7a05b97 (<__libc_start_main+231>:       mov    edi,eax)
0016| 0x7fffffffe260 --> 0x1
0024| 0x7fffffffe268 --> 0x7fffffffe338 --> 0x7fffffffe5ce ("/home/ubuntu/Dropbox/Workspace/c/doodle/helloworld-no-pie")
0032| 0x7fffffffe270 --> 0x100008000
0040| 0x7fffffffe278 --> 0x4004e7 (<main>:      push   rbp)
0048| 0x7fffffffe280 --> 0x0
0056| 0x7fffffffe288 --> 0x4109919a95c7f178
[------------------------------------------------------------------------------]
Legend: code, data, rodata, value

Breakpoint 1, main () at helloworld.c:21
21          printf("Hello world!\n");
1: x/xg 0x601018  0x601018:     0x00000000004003f6
gdb-peda$ set env LD_BIND_NOW=1
gdb-peda$ r
Starting program: /home/ubuntu/Dropbox/Workspace/c/doodle/helloworld-no-pie
[----------------------------------registers-----------------------------------]
RAX: 0x4004e7 (<main>:  push   rbp)
RBX: 0x0
RCX: 0x400500 (<__libc_csu_init>:       push   r15)
RDX: 0x7fffffffe348 --> 0x7fffffffe607 ("HOME=/home/ubuntu")
RSI: 0x7fffffffe338 --> 0x7fffffffe5cd ("/home/ubuntu/Dropbox/Workspace/c/doodle/helloworld-no-pie")
RDI: 0x1
RBP: 0x7fffffffe250 --> 0x400500 (<__libc_csu_init>:    push   r15)
RSP: 0x7fffffffe250 --> 0x400500 (<__libc_csu_init>:    push   r15)
RIP: 0x4004eb (<main+4>:        lea    rdi,[rip+0x92]        # 0x400584)
R8 : 0x7ffff7dd0d80 --> 0x0
R9 : 0x7ffff7dd0d80 --> 0x0
R10: 0x0
R11: 0x1
R12: 0x400400 (<_start>:        xor    ebp,ebp)
R13: 0x7fffffffe330 --> 0x1
R14: 0x0
R15: 0x0
EFLAGS: 0x246 (carry PARITY adjust ZERO sign trap INTERRUPT direction overflow)
[-------------------------------------code-------------------------------------]
   0x4004e5 <frame_dummy+5>:    jmp    0x400470 <register_tm_clones>
   0x4004e7 <main>:     push   rbp
   0x4004e8 <main+1>:   mov    rbp,rsp
=> 0x4004eb <main+4>:   lea    rdi,[rip+0x92]        # 0x400584
   0x4004f2 <main+11>:  call   0x4003f0 <puts@plt>
   0x4004f7 <main+16>:  mov    eax,0x0
   0x4004fc <main+21>:  pop    rbp
   0x4004fd <main+22>:  ret
[------------------------------------stack-------------------------------------]
0000| 0x7fffffffe250 --> 0x400500 (<__libc_csu_init>:   push   r15)
0008| 0x7fffffffe258 --> 0x7ffff7a05b97 (<__libc_start_main+231>:       mov    edi,eax)
0016| 0x7fffffffe260 --> 0x1
0024| 0x7fffffffe268 --> 0x7fffffffe338 --> 0x7fffffffe5cd ("/home/ubuntu/Dropbox/Workspace/c/doodle/helloworld-no-pie")
0032| 0x7fffffffe270 --> 0x100008000
0040| 0x7fffffffe278 --> 0x4004e7 (<main>:      push   rbp)
0048| 0x7fffffffe280 --> 0x0
0056| 0x7fffffffe288 --> 0xbb586d33e5a0e758
[------------------------------------------------------------------------------]
Legend: code, data, rodata, value

Breakpoint 1, main () at helloworld.c:21
21          printf("Hello world!\n");
1: x/xg 0x601018  0x601018:     0x00007ffff7a649c0
gdb-peda$ x/4i 0x00007ffff7a649c0
   0x7ffff7a649c0 <_IO_puts>:   push   r13
   0x7ffff7a649c2 <_IO_puts+2>: push   r12
   0x7ffff7a649c4 <_IO_puts+4>: mov    r12,rdi
   0x7ffff7a649c7 <_IO_puts+7>: push   rbp