it's k3 structure, the struct size of k5 is same as k3 so you can use it as a reference, you can even directly use it for k5 tad if you don't care the item which only support from k5. it will be helpful if anyone can help to correct the structure of k5. (that's why I am looking for k5 basedef.h)
== reference for k5 structure ==
struct STRUCT_MOB
{ char szName[20]; short sMuscle ;
........
........
........
// STRUCT_ITEM Inven[72];
STRUCT_ITEM Inven[48];
/* Unknown size is STRUCT_ITEM * 24, it includes PET/Mount/Glasses/Headband */ STRUCT_UNKNOWN Unknown;
STRUCT_ITEM Equip[MAX_EQUIP];};
== the following packets is comming from k5 ==
nID(1), Slot(0), Coin(1002566391), AccountName(accTEST), dwTimeStamp(1577201542, 1577201542, 1577201542, 1577201542, 1577201542, 1577201542, 0, 0, 0, 0), szName(nameTEST), sMuscle(18), sNerves(11), sHeart(11), sMind(10), snTribe(16), snBagIndex(0), nPrana(0), nHP(886), nTP(502), nRupiah(219750), nBramanPoint(45), nGuildID(0), byTrimuriti(2), byLevel(80), byFace(1), byHead(1), byInvenBag(0), bySpecialName(0), byZone(3), bySaveZone(1), byStatus(0), byGMStatus(0), byClass1(0), byClass2(2), snKarma(0), byDecPranaRate(0), byKillLevel(0), snX/Y(453/425), snSaveX/Y(509/233)
-------- Inven -------- Some difference between k3 and k5
00: snIndex(0), snDurability(0), wSerial(0), snDummy(0), byCount(0), bySubRefine(0 0 0 0 0), byDummy(0), byRefineLevel(0)........
........
47: snIndex(0), snDurability(0), wSerial(0), snDummy(0), byCount(0), bySubRefine(0 0 0 0 0), byDummy(0), byRefineLevel(0)
48: <= from here is where Pet info start, including Satia, Para, Level ... etc.
59: <= Pet info end
60: <= from here is the item ID of Headhand, Glasses, Mount.
61 <= unknown
........
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71 <= unknown
-------- Equip -------- All same as k3
00: snIndex(0), snDurability(0), wSerial(0), snDummy(0), byCount(0), bySubRefine(0 0 0 0 0), byDummy(0), byRefineLevel(0)
........
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15: snIndex(0), snDurability(0), wSerial(0), snDummy(0), byCount(0), bySubRefine(0 0 0 0 0), byDummy(0), byRefineLevel(0)
-------- Cargo -------- All same as k3
000: snIndex(0), snDurability(0), wSerial(0), snDummy(0), byCount(0), bySubRefine(0 0 0 0 0), byDummy(0), byRefineLevel(0)
........
........
119: snIndex(0), snDurability(0), wSerial(0), snDummy(0), byCount(0), bySubRefine(0 0 0 0 0), byDummy(0), byRefineLevel(0)