[pwnable.kr] syscall 풀이
// adding a new system call : sys_upper #include #include #include #include #include #include #include #include #define SYS_CALL_TABLE0x8000e348// manually configure this address!! #define NR_SYS_UNUSED223 //Pointers to re-mapped writable pages unsigned int** sct; asmlinkage long sys_upper(char *in, char* out){ int len = strlen(in); int i; for(i=0; i=0x61 && in[i]
2021.10.16
