ropshell> use 61492c8e91e605776085ad3283bb53fd (download) name : ch37 (x86_64/ELF) base address : 0x4000f0 total gadgets: 17
ropshell> suggest sp lifting > 0x0040017e : add rsp, 0x20; ret > 0x0040017e : add rsp, 0x20; ret syscall > 0x0040017c : syscall ; add rsp, 0x20; ret