** program './guess' loaded. entry point 0x40108b.
      40108b: f3 0f 1e fa                       endbr64
      40108f: 55                                push      rbp
      401090: 48 89 e5                          mov       rbp, rsp
      401093: 48 83 ec 10                       sub       rsp, 0x10
      401097: ba 12 00 00 00                    mov       edx, 0x12
(sdb) break 0x4010de
** set a breakpoint at 0x4010de.
(sdb) cont
guess a number > 1
** hit a breakpoint at 0x4010de.
      4010de: 48 89 c7                          mov       rdi, rax
      4010e1: e8 1a ff ff ff                    call      0x401000
      4010e6: 85 c0                             test      eax, eax
      4010e8: 75 1b                             jne       0x401105
      4010ea: ba 06 00 00 00                    mov       edx, 6
(sdb) patch 0x4010e8 0x9090 2
** patch memory at address 0x4010e8.
(sdb) si
      4010e1: e8 1a ff ff ff                    call      0x401000
      4010e6: 85 c0                             test      eax, eax
      4010e8: 90                                nop
      4010e9: 90                                nop
      4010ea: ba 06 00 00 00                    mov       edx, 6
(sdb) info break
Num	Address		
0	0x4010de
(sdb) delete 0
** delete breakpoint 0.
(sdb) break 0x4010ea
** set a breakpoint at 0x4010ea.
(sdb) delete 0
** breakpoint 0 does not exist.
(sdb) info break
Num	Address		
1	0x4010ea
(sdb) cont
** hit a breakpoint at 0x4010ea.
      4010ea: ba 06 00 00 00                    mov       edx, 6
      4010ef: 48 8d 05 1f 0f 00 00              lea       rax, [rip + 0xf1f]
      4010f6: 48 89 c6                          mov       rsi, rax
      4010f9: bf 01 00 00 00                    mov       edi, 1
      4010fe: e8 25 00 00 00                    call      0x401128
(sdb) patch 0x402015 0x4e49570a 4
** patch memory at address 0x402015.
(sdb) cont

WIN
** the target program terminated.