Code Obfuscation

PBO Tools includes a built-in code obfuscation feature designed to protect your mod's code from being easily read or copied. By default, this feature only obfuscates strings. However, with the correct naming conventions, you can extend obfuscation to include functions, variables, and classes.

How It Works

When enabled, the obfuscation process will:

Obfuscate all string literals in your code.
Obfuscate additional code elements if they use specific prefixes.

To include functions, variables, or classes in the obfuscation process, use the prefixes listed below when naming them.

Obfuscation Prefixes

To mark a code element for obfuscation, name it with the appropriate prefix:

Variables: obfv_
Functions/Methods: obfm_
Classes: obfc_

Example

void obfm_CheckServer(string obfv_ip)
{
    Print("Connecting to: " + obfv_ip);
}

In this example:

obfm_CheckServer will be obfuscated as a function.
obfv_ip will be obfuscated as a variable.
The string "Connecting to: " will also be obfuscated.
Print remains unchanged as it is a base game function and should not be touched.

Real World Example (Schana Mod Global Chat)

modded class MissionServer {
XwqDJvrmXw47s97 MissionServer() {
Print(kikAjVIj("79748091BA6F0C9851785D3A2DBF51C2835C83888A", ("sUc1EVYoU6RDLf".Hash() + __LINE__.ToInt())));
GetRPCManager().AddRPC(kikAjVIj("66904C96595391B4417C6C6B6454939C8B9B50", ("bwhy1I1uWmdMhy".Hash() + __LINE__.ToInt())), kikAjVIj("A659CBB5664F57D246CA42506488BF6666", ("VS6Pt1HtVAsJ32".Hash() + __LINE__.ToInt())), this, SingleplayerExecutionType.Server);
GetRPCManager().AddRPC(kikAjVIj("897E36613F89635792BD3E6C84CC8A7CC0C190", ("lbUZqUqdZ3GsVv".Hash() + __LINE__.ToInt())), kikAjVIj("2E5BC36C87899E4C68864E8457A3", ("QTNvVbm6agILR7".Hash() + __LINE__.ToInt())), this, SingleplayerExecutionType.Server);
GetGame().GetCallQueue(CALL_CATEGORY_SYSTEM).CallLater(this.BroadCastPlayerList, 10000, true);
vWTapnaCoPQG();
}
XwqDJvrmXw47s97 vJAmOvoViVFM(ZtrUPfBzRFKQHHq type, ref OYmakunmewNrsKo ctx, ref vvO9t6rTCeSN1gv sender, ref hMIsyqIQckN9ExE target) {
if (type == CallType.Server) {
MW6B2fJp2e5yoeg < ref rwSfHNwZ > data;
ctx.Read(data);
rwSfHNwZ WNcEUoYj = data.param1;
WNcEUoYj.TuoQXLMtX(sender.GetPlainId());
JS2JumdfaA6c1zr KkcNTOHO = WNcEUoYj.GetSteamUID();
if (mgXTFwgN.yzmwiIqbkJfp(KkcNTOHO)) {
ref rwSfHNwZ mfWRicHX = new rwSfHNwZ(NULL, kikAjVIj("5154CBA28C56076D8E7351890C5B8E62C4B1A10941638071926883A9A242B6BFADCD9057B080BD48706357", ("icCRwXthEoKYC8".Hash() + __LINE__.ToInt())), new GlobalChatARGB(255, 255, 0, 0));
mfWRicHX.SetPlayerName(kikAjVIj("78A3377E95B0", ("GGUpK89QabHZGX".Hash() + __LINE__.ToInt())));
GetRPCManager().SendRPC(kikAjVIj("A15652683EC2B07D5FA86F9248CB9FAE7B668A", ("RBgZkCjmAK06wk".Hash() + __LINE__.ToInt())), kikAjVIj("3362888976B88B962E4951B35CACAA53AD71BDCA9AC3B1", ("A8CCAUzAQOnTpt".Hash() + __LINE__.ToInt())), new MW6B2fJp2e5yoeg < ref rwSfHNwZ > (mfWRicHX), true, sender);
return;
}
GSNIEZG0r9jyb42 DdNslNEJ = {
kikAjVIj("625285A6B86B", ("4eJB6pQV1Pms0D".Hash() + __LINE__.ToInt())),
kikAjVIj("5E528D6F", ("7Pz7zmmVkXO3ub".Hash() + __LINE__.ToInt())),
kikAjVIj("6FA48C80C084", ("N33LtFNinVQFJ0".Hash() + __LINE__.ToInt())),
kikAjVIj("4E35A783A385", ("2jCADH7z1FVRCE".Hash() + __LINE__.ToInt())),
kikAjVIj("8B8FA3AF2AB3", ("lnKHbtNnXn36Sv".Hash() + __LINE__.ToInt())),
kikAjVIj("B68356857A96", ("qV9Zdskak7hpFX".Hash() + __LINE__.ToInt())),
kikAjVIj("7455519A", ("CmEyll8mRD2k2g".Hash() + __LINE__.ToInt())),
kikAjVIj("8E8F63B3825D", ("HPyzmLKGBe9N8o".Hash() + __LINE__.ToInt())),
kikAjVIj("5AA24C", ("jFLtZjAvjsVYNN".Hash() + __LINE__.ToInt())),
kikAjVIj("79B98E", ("sh0BVvdhfSbzQW".Hash() + __LINE__.ToInt())),
kikAjVIj("7572C06DBC", ("lDj0FJk8NODBwe".Hash() + __LINE__.ToInt())),
kikAjVIj("8F5C9982CCCB", ("HCcMmHOTCQF7yq".Hash() + __LINE__.ToInt())),
kikAjVIj("B0797797AA", ("DVLwoMT4unouEL".Hash() + __LINE__.ToInt())),
kikAjVIj("AF936B8D6F", ("wHZuCXhTfJihWV".Hash() + __LINE__.ToInt())),
kikAjVIj("A03DBB0F6E3A680659", ("WHUAlpIiWSGGj7".Hash() + __LINE__.ToInt())),
kikAjVIj("6D665A4273", ("INKGB21g4SN5sE".Hash() + __LINE__.ToInt())),
kikAjVIj("5650B88063", ("Vu9FAA0ZRtc0o7".Hash() + __LINE__.ToInt())),
kikAjVIj("BC8D9B6F54C1", ("aIbOY9xdDUkZxC".Hash() + __LINE__.ToInt())),
kikAjVIj("749779535668", ("bO88nsdERbCDV9".Hash() + __LINE__.ToInt())),
kikAjVIj("772CAD7CB94BAE42467180", ("CECtkOYijNcUpL".Hash() + __LINE__.ToInt())),
kikAjVIj("8E6360BD", ("K0BJbauTYSKOLJ".Hash() + __LINE__.ToInt())),
kikAjVIj("5A76A39D537A66", ("QGL025GK1TIyZC".Hash() + __LINE__.ToInt())),
kikAjVIj("8456C2", ("qhgPq2be2LjXjZ".Hash() + __LINE__.ToInt())),
kikAjVIj("4D1775009D085971996466", ("MTYfTbPpN8vwkY".Hash() + __LINE__.ToInt())),
kikAjVIj("B75B5FB2859391", ("tOBoS2n749CQAx".Hash() + __LINE__.ToInt()))
};
JS2JumdfaA6c1zr RSRwLAXQ = WNcEUoYj.GetMessage();
JS2JumdfaA6c1zr IqduHQpx = RSRwLAXQ + "";
IqduHQpx.ToLower();
foreach(JS2JumdfaA6c1zr PQCbfvYB: DdNslNEJ) {
PQCbfvYB.ToLower();
rQe8nePTKR9aOZn DIMPUFKw = IqduHQpx.IndexOf(PQCbfvYB);
GSNIEZG0r9jyb42 oAmOkixN = new GSNIEZG0r9jyb42;
IqduHQpx.Split(kikAjVIj("6C", ("38tGaxGlQe7mp2".Hash() + __LINE__.ToInt())), oAmOkixN);
foreach(JS2JumdfaA6c1zr uMggrOwcj: oAmOkixN) {
if (uMggrOwcj == PQCbfvYB) {
mgXTFwgN.ZDPzZIHUHhtg(new GlobalChatPlayer(sender.GetName(), sender.GetPlainId(), sender.GetId()));
ref rwSfHNwZ CNJbbsHyI = new rwSfHNwZ(NULL, kikAjVIj("96C27AC1B45E727A74D28D31368293914B49AD1E66597F8E696CB0D09486BB8EC5D1A9AAA5ABB7276D7591", ("ZNuJxWNhF7MGjV".Hash() + __LINE__.ToInt())), new GlobalChatARGB(255, 255, 0, 0));
CNJbbsHyI.pJDGAMrLF(kikAjVIj("999FA5996CA8", ("yqTxHxiM3iw4EL".Hash() + __LINE__.ToInt())));
GetRPCManager().SendRPC(kikAjVIj("7D8D84483EBDAE7E4FAA4A5C7FBB399459C580", ("7TD82cR2wrK4H8".Hash() + __LINE__.ToInt())), kikAjVIj("995C44C484BCBCA77C83AC84779370B5944477A7999976", ("upbpHlKTmvzi4U".Hash() + __LINE__.ToInt())), new MW6B2fJp2e5yoeg < ref rwSfHNwZ > (CNJbbsHyI), true, sender);
return;
}
}
if (DIMPUFKw != -1) {
if ((DIMPUFKw >= 0 && aVkqAcWuWyxZ(IqduHQpx.Substring(DIMPUFKw - 1, 1))) || (DIMPUFKw + PQCbfvYB.Length() < IqduHQpx.Length() && aVkqAcWuWyxZ(IqduHQpx.Substring(DIMPUFKw + PQCbfvYB.Length(), 1))))
continue;
mgXTFwgN.ZDPzZIHUHhtg(new iULXOCxCummq(sender.GetName(), sender.GetPlainId(), sender.GetId()));
ref rwSfHNwZ UnGIHljbrnTI = new rwSfHNwZ(NULL, kikAjVIj("519697747F545C92CF85AB28263DAD9E57657803441763B86C48B3AB7B747D5FC0D35DA865998077B0775F", ("8O4JFjjhW16ya7".Hash() + __LINE__.ToInt())), new GlobalChatARGB(255, 255, 0, 0));
UnGIHljbrnTI.pJDGAMrLF(kikAjVIj("9F343CAF4F62", ("Tk8yagkYArb36I".Hash() + __LINE__.ToInt())));
GetRPCManager().SendRPC(kikAjVIj("9D9946813FCAB48F43BA49B876815A72A6A681", ("DQUmappr0Zypwz".Hash() + __LINE__.ToInt())), kikAjVIj("3B8798A5C68878A140B38DB496B95C4B748AB89757AE70", ("k9KL7JLhShXJ2o".Hash() + __LINE__.ToInt())), new MW6B2fJp2e5yoeg < ref rwSfHNwZ > (UnGIHljbrnTI), true, sender);
return;
}
while (DIMPUFKw != -1) {
rQe8nePTKR9aOZn wordEnd = DIMPUFKw + PQCbfvYB.Length();
for (rQe8nePTKR9aOZn i = 0; i < PQCbfvYB.Length(); i++) {
RSRwLAXQ[DIMPUFKw + i] = kikAjVIj("88", ("X3BrfWjdnRAJpJ".Hash() + __LINE__.ToInt()));
}
DIMPUFKw = IqduHQpx.IndexOfFrom(wordEnd, PQCbfvYB);
}
}
WNcEUoYj.lQnatWUgnquH(mgXTFwgN.GetTierColor(KkcNTOHO));
WNcEUoYj.MgTgIslBfGmT(mgXTFwgN.GetRole(KkcNTOHO));
GetRPCManager().SendRPC(kikAjVIj("493A44725B665C8485A97A6A90BD6FB87E73AB", ("7bDO9yqFN0DqVy".Hash() + __LINE__.ToInt())), kikAjVIj("42817776527A8A4EA04A6C6F427B9AACC0B75FB57C9253", ("Eu2Ts7qhbnT9TN".Hash() + __LINE__.ToInt())), new MW6B2fJp2e5yoeg < ref rwSfHNwZ > (WNcEUoYj));
}
}
lyCi29SFHi3KWSG aVkqAcWuWyxZ(JS2JumdfaA6c1zr str) {
JS2JumdfaA6c1zr ZlpkSafrtHuE = kikAjVIj("416C4D71519DC29FA6C76F824DB366B7A85FA8B0A87BC8BBBA7261346C738A5132388E4580572E4EA5505452A78BA8585E618E9C", ("X6kAcbfjbHis01".Hash() + __LINE__.ToInt()));
return ZlpkSafrtHuE.IndexOf(str) >= 0;
}
XwqDJvrmXw47s97 GetPlayersList(ZtrUPfBzRFKQHHq type, ref OYmakunmewNrsKo ctx, ref vvO9t6rTCeSN1gv sender, ref hMIsyqIQckN9ExE target) {
if (type == CallType.Server) {
riqOfqSht(sender);
}
}
override void InvokeOnConnect(PlayerBase player, PlayerIdentity identity) {
super.InvokeOnConnect(player, identity);
riqOfqSht();
}
XwqDJvrmXw47s97 riqOfqSht(ref vvO9t6rTCeSN1gv sender = NULL) {
ref xR68ZEq0lf5RFm0 < Man > MDEFwVUoy = new xR68ZEq0lf5RFm0 < Man > ;
GetGame().GetPlayers(MDEFwVUoy);
ref xvFTsh2ntHZX9Ni < ref iULXOCxCummq > qTeBuNFGS = new xvFTsh2ntHZX9Ni < ref iULXOCxCummq > ();
foreach(MpIxubMOpL03m1F man: MDEFwVUoy) {
UY2FAPANnDzE8Qh player = UY2FAPANnDzE8Qh.Cast(man);
if (!player)
continue;
qTeBuNFGS.Insert(new iULXOCxCummq(player.GetIdentity().GetName(), player.GetIdentity().GetPlainId(), player.GetIdentity().GetId()));
}
if (sender)
GetRPCManager().SendRPC(kikAjVIj("8841996452768E746BCA2C69979D588E478C9E", ("rYdpFBcVmJcRfy".Hash() + __LINE__.ToInt())), kikAjVIj("42669E7184B990C79AA97462B85465A59A", ("8drcfkzS5rBJlL".Hash() + __LINE__.ToInt())), new wJEWREECrpCFh1t < array < ref iULXOCxCummq >> (qTeBuNFGS), true, sender);
else
GetRPCManager().SendRPC(kikAjVIj("6958867EA58DA39C735C486367CE994E4FC05F", ("TQJjHcZrHPHeZv".Hash() + __LINE__.ToInt())), kikAjVIj("2B976146C9C15F564886567D676D8EC55A", ("NxQOvZ9aKxyPp9".Hash() + __LINE__.ToInt())), new wJEWREECrpCFh1t < array < ref iULXOCxCummq >> (qTeBuNFGS), true);
}
}

Obfuscating Multiple Dependent Mods

If you have two or more mods that rely on each other (e.g.AirdropClient and AirdropServer), and you want them to share the same obfuscated variable, function, and class names, follow these steps carefully:

Create a new folder in your P Drive. Name it something like Airdrop.
Move your dependent mods into this folder. For example:

P:\Airdrop\AirdropClient
P:\Airdrop\AirdropServer

Drag the entire Airdrop folder into PBO Tools.In the options, make sure the following are enabled: - PBO Obfuscation - Code Obfuscation - (Optional) Remove Comments
Close PBO Tools once it’s finished.
Delete the .pbo file that was created.
You’ll now see a folder named Airdrop_obfuscated. Inside, both AirdropClient and AirdropServer will be obfuscated with the same naming map.
Now, to pack the mods individually, you can process AirdropClient and AirdropServer from inside the Airdrop_obfuscated mod separately in PBO Tools, but: - Do not re-enable Code Obfuscation. - You can still enable PBO Obfuscation.

Best Practices

Do not obfuscate any vanilla DayZ methods, variables, or classes.
Avoid obfuscating cross-mod elements (e.g. shared class names across different mods), as each mod’s obfuscation is handled separately and may conflict.
Always test your mod thoroughly after obfuscation to ensure functionality is preserved.

Need help? For any questions or assistance, please contact our support team or email us at [email protected]

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Last updated 1 month ago