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Further reading : How to handle stripped binaries with GDB? No source, no symbols and GDB only shows addresses?

Further reading : How to handle stripped binaries with GDB? No source, no symbols and GDB only shows addresses?

Good luck and have fun !

Further reading : How to handle stripped binaries with GDB? No source, no symbols and GDB only shows addresses?

Good luck and have fun !

(lldb) br s -a 0x401264
Breakpoint 1: address = 0x0000000000401264
(lldb) r
...
(lldb)

Once you've loaded your binary and your breakpoint has been triggered, you can display following instructions this way :

(lldb) (lldb) x -s4 -fi -c11 $pc
-> 0x401264:    xor    ebp,ebp
   0x401266:    mov    r9,rdx
   0x401269:    pop    rsi
   0x40126a:    mov    rdx,rsp
   0x40126d:    and    rsp,0xfffffffffffffff0
   0x401271:    push   rax
   0x401272:    push   rsp
   0x401273:    mov    r8,0x403560
   0x40127a:    mov    rcx,0x403570
   0x401281:    mov    rdi,0x4011c0
   0x401288:    call   0x401060 <__libc_start_main@plt>

$ lldb /bin/true
(lldb) target create "/bin/true"
Current executable set to '/bin/true' (x86_64).
(lldb) br s -a 0x401264
Breakpoint 1: address = 0x0000000000401264
(lldb) r
...
(lldb)

Once you've loaded your binary and your breakpoint has been triggered, you can display following instructions that will be executed this way :

(lldb) x -s4 -fi -c11 $pc
-> 0x401264:    xor    ebp,ebp
   0x401266:    mov    r9,rdx
   0x401269:    pop    rsi
   0x40126a:    mov    rdx,rsp
   0x40126d:    and    rsp,0xfffffffffffffff0
   0x401271:    push   rax
   0x401272:    push   rsp
   0x401273:    mov    r8,0x403560
   0x40127a:    mov    rcx,0x403570
   0x401281:    mov    rdi,0x4011c0
   0x401288:    call   0x401060 <__libc_start_main@plt>