# Warmup : Welcome to securinets CTF (188 solves)
> Is this enough for you? >> Authors : KERRO & Anis_Boss
main:
```c++int main(int a1, char **a2, char **a3){  size_t v3;  int v5;  int i;
  write(1, "Welcome to SECURINETS CTF\n", 0x1AuLL);  read(0, s, 0x31uLL);  s[strlen(s) - 1] = 0;  v5 = 0;  strcpy(dest, s);  v3 = strlen(s);  memfrob(s, v3);  for ( i = 0; i <= 19; ++i )    v5 += (char)(s[i] ^ byte_201020[i]);  if ( v5 )    puts(":(...");  else    printf("Good job\nYou can submit with securinets{%s}\n", dest);  return 0LL;}```
Solution:
```pythonflag = [    0x46, 0x19, 0x5e, 0x0d,    0x59, 0x75, 0x5d, 0x1e,    0x58, 0x47, 0x75, 0x1b,    0x5e, 0x75, 0x5f, 0x5a,    0x75, 0x48, 0x45, 0x53,     0x1e]
out = ''for i in flag:    out += chr(i ^ 42)print(out)```
yields `l3t's_w4rm_1t_up_boy4`