[Android] 小红书短视频app 爆破签名校验教程

软件样品为当前最新完整版6.86.0，好像还分极速版和完整版的，极速版40多MB。

int __fastcall sub_93228(int a1)
{
  int v2; // [sp+14h] [bp-6Ch]
  int v4; // [sp+28h] [bp-58h]
  int v5; // [sp+2Ch] [bp-54h]
  int v6; // [sp+30h] [bp-50h]
  int v7; // [sp+34h] [bp-4Ch]
  int v8; // [sp+38h] [bp-48h]
  int v9; // [sp+3Ch] [bp-44h]
  int v10; // [sp+40h] [bp-40h]
  int v11; // [sp+44h] [bp-3Ch]
  int v12; // [sp+48h] [bp-38h]
  int v13; // [sp+4Ch] [bp-34h]
  int v14; // [sp+54h] [bp-2Ch]
  int v15; // [sp+58h] [bp-28h]
  int v16; // [sp+5Ch] [bp-24h]
  int v17; // [sp+60h] [bp-20h]
  int v18; // [sp+64h] [bp-1Ch]
  time_t timer; // [sp+70h] [bp-10h] BYREF

  v18 = sub_F93C(*(a1 + 76));
  v17 = sub_F9A0(v18, "android/app/Application");
  v16 = sub_F9EC(v18, v17, "getPackageManager", "()Landroid/content/pm/PackageManager;");
  v15 = sub_FA60(v18, *(a1 + 80), v16);
  v14 = sub_F9A0(v18, "android/content/pm/PackageManager");
  v2 = sub_F9EC(v18, v14, "getPackageInfo", "(Ljava/lang/String;I)Landroid/content/pm/PackageInfo;");
  sub_FAE0(a1);
  v13 = sub_FA60(v18, v15, v2);
  v12 = sub_F9A0(v18, "android/content/pm/PackageInfo");
  v11 = sub_FB5C(v18, v12, "signatures", "[Landroid/content/pm/Signature;");
  v10 = sub_F9A0(v18, "android/content/pm/Signature");
  v9 = sub_F9EC(v18, v10, "hashCode", "()I");
  v8 = sub_FBD0(v18, v13, v11);
  v7 = sub_FC2C(v18, v8);
  v6 = 0;
  time(&timer);
  while ( 1 )
  {
    if ( v6 >= v7 )
    {
      sub_FD64(v18, v17);
      sub_FD64(v18, v15);
      sub_FD64(v18, v13);
      sub_FD64(v18, v8);
      sub_FD64(v18, v10);
      abort();
    }
    v5 = sub_FC88(v18, v8, v6);
    v4 = sub_FCE4(v18, v5, v9);
    if ( v4 == -1083242518 || v4 == -1075459295 || v4 == -815670264 )
      break;
    sub_FD64(v18, v5);
    ++v6;
  }
  return 1;