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level04: code refactorized

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0x35c 2025-05-06 14:13:42 +02:00
parent c6db5f49cd
commit 6fee805bf3
1 changed files with 9 additions and 17 deletions
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26
level04/source.c
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@ -7,31 +7,23 @@
int main(void) int main(void)
{ {
int stat_loc;
char s[128]; char s[128];
int v6; int wstatus;
int v7; pid_t pid;
int v8;
pid_t v9;
v9 = fork(); pid = fork();
memset(s, 0, sizeof(s)); memset(s, 0, sizeof(s));
v8 = 0; if (pid) {
stat_loc = 0;
if (v9) {
do { do {
wait(&stat_loc); wait(&wstatus);
v6 = stat_loc; if (WIFSIGNALED(wstatus) ||
if ((stat_loc & 0x7F) == 0 || ((char)(WIFSIGNALED(wstatus) + 1) >> 1 > 0)) {
(v7 = stat_loc,
(char)((stat_loc & 0x7F) + 1) >> 1 > 0)) {
puts("child is exiting..."); puts("child is exiting...");
return 0; return 0;
} }
v8 = ptrace(PTRACE_PEEKUSER, v9, 44, 0); } while (ptrace(PTRACE_PEEKUSER, pid, 44, 0) != 11);
} while (v8 != 11);
puts("no exec() for you"); puts("no exec() for you");
kill(v9, 9); kill(pid, 9);
} else { } else {
prctl(1, 1); prctl(1, 1);
ptrace(PTRACE_TRACEME, 0, 0, 0); ptrace(PTRACE_TRACEME, 0, 0, 0);