** 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) patch 0x4010e8 0x9090 2
** patch memory at address 0x4010e8.
(sdb) break 0x4010e8
** set a breakpoint at 0x4010e8.
(sdb) cont
guess a number > 1
** hit a breakpoint at 0x4010e8.
      4010e8: 90                              	nop       
      4010e9: 90                              	nop       
      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
(sdb) break 4010ea
** set a breakpoint at 0x4010ea.
(sdb) patch 4010ea 0x03ba 4
** patch memory at address 0x4010ea.
(sdb) cont
** hit a breakpoint at 0x4010ea.
      4010ea: ba 03 00 00 00                  	mov       edx, 3
      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) cont

ye** the target program terminated.