[逆向学习笔记]桂林电子科技大学“深信服杯”

__int64 sub_400917()
{
  unsigned int v1; // [rsp+0h] [rbp-10h]
  signed int i; // [rsp+4h] [rbp-Ch]
  signed int j; // [rsp+8h] [rbp-8h]
  int k; // [rsp+Ch] [rbp-4h]

  v1 = 1;
  for ( i = 0; i <= 4; ++i )
  {
    for ( j = 0; j <= 4; ++j )
    {
      for ( k = j + 1; k <= 4; ++k )
      {
        if ( *(&unk_601060 + 5 * i + j) == *(&unk_601060 + 5 * i + k) )
          v1 = 0;
        if ( *(&unk_601060 + 5 * j + i) == *(&unk_601060 + 5 * k + i) )
          v1 = 0;
      }
    }
  }
  return v1;
}

_QWORD *__fastcall sub_400758(__int64 cin, int offset, int a3)
{
  _QWORD *v4; // rax
  _QWORD *v5; // ST28_8
  int str_long; // [rsp+0h] [rbp-30h]
  char v7; // [rsp+1Fh] [rbp-11h]

  str_long = a3;
  v7 = *(offset + cin);
  if ( v7 == 32 || v7 == 10 || offset >= a3 )
    return 0LL;
  v4 = malloc(0x18uLL);
  v5 = v4;
  *v4 = v7;
  v4[1] = sub_400758(cin, 2 * offset + 1, str_long);
  v5[2] = sub_400758(cin, 2 * (offset + 1), str_long);
  return v5;
}

__int64 __fastcall sub_400807(__int64 a1, __int64 a2)
{
  __int64 result; // rax

  result = a1;
  if ( a1 )
  {
    sub_400807(*(a1 + 8), a2);
    *(a2 + dword_601080++) = *a1;
    result = sub_400807(*(a1 + 16), a2);
  }
  return result;
}