AlliedModders - Lysis: An experimental .smx decompiler

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- - Lysis: An experimental .smx decompiler (https://forums.alliedmods.net/showthread.php?t=170898)

Re: Lysis: An experimental .smx decompiler

Quote:

Originally Posted by schmidt (Post 1734373)

Error: bad file

Who can get source code?

Full error: (line #'s might be different on mine)

Code:

Unhandled Exception: System.Exception: bad file

   at SourcePawn.SourcePawnFile..ctor(Byte[] binary) in Lysis\SourcePawnFile.cs:line 441

   at Lysis.PawnFile.FromFile(String path) in Lysis\PawnFile.cs:line 47

   at Lysis.Program.Main(String[] args) in Lysis\Program.cs:line 94

It's becoming increasingly more common for closed-source communities to modify the *.smx in a way that blocks Lysis, but still loads on SourceMod.

Is Lysis just getting stuck on some unnecessary header changes?

Edit: Looks like the same issue over here. Time to ping psychonic.

Re: Lysis: An experimental .smx decompiler

Quote:

Originally Posted by schmidt (Post 1734373)

Error: bad file

Who can get source code?
https://bugs.alliedmods.net/show_bug.cgi?id=5358

Where did you get that plugin? Seems like some strange way of seperating admins:D
xbox_throttlespoof 123 ?

Quote:

Originally Posted by GoD-Tony (Post 1734376)

Full error: (line #'s might be different on mine)

Code:

Unhandled Exception: System.Exception: bad file

   at SourcePawn.SourcePawnFile..ctor(Byte[] binary) in Lysis\SourcePawnFile.cs:line 441

   at Lysis.PawnFile.FromFile(String path) in Lysis\PawnFile.cs:line 47

   at Lysis.Program.Main(String[] args) in Lysis\Program.cs:line 94

Yes, it's some minor header changes that mock lysis. In the above one x.smx, the imagesize was changed from like 00001818 to 01001818, leaving the decompression check in the air, as it was expecting 16783081 uncompressed bytes instead of 5865.

Another change, which is also present in the kac thing you linked to is the removal of the null-terminator after the last section name. .dbg.strings\x00 would be .dbg.strings\x01 letting lysis skip too far and reading .dbg.strings€..

Changing both back to 00 fixed it.

You might be able to work around that, by touching the ReadString function and let it stop at any ascii control character instead of only 0.

Code:

if (bytes[count] == 0)

Code:

if (bytes[count] < 32)

For the imagesize change.. Well, one could simply remove the size check and only check, if the decompression was successful at all instead of expecting some kind of size.

Re: Lysis: An experimental .smx decompiler

Quote:

Originally Posted by Peace-Maker (Post 1734481)

Where did you get that plugin? Seems like some strange way of seperating admins:D
xbox_throttlespoof 123 ?

here =)
Peace-Maker, thank you very much.

Re: Lysis: An experimental .smx decompiler

can somebody please decompile this for me, it is a knockback plugin ive used for my zriot server but when i went to go look for the thread again it was gone and all the configuration has to be changed in the .sp file then compiled.

Re: Lysis: An experimental .smx decompiler

You asked once about this btw: http://forums.alliedmods.net/showthread.php?p=1742986

it doesn't decompile too well:

PHP Code:


		
			

new PlVers:__version = 5;
new Float:NULL_VECTOR[3];
new String:NULL_STRING[1];
new Extension:__ext_core = 68;
new MaxClients;
new Extension:__ext_sdktools = 184;
public Plugin:myinfo =
{
    name = "KnockBack",
    description = "Weapon Knock Back",
    author = "******************ο***************************",
    version = "1.0",
    url = ""
};
new String:weaponKB[28][2][64] =
{
    {
        "knife",
        "0.0"
    },
    {
        "glock",
        "1000.0"
    }
    {
        "usp",
        "1000.0"
    },

Are any of these what you're looking for:
http://forums.alliedmods.net/showthread.php?t=60180
https://forums.alliedmods.net/showthread.php?t=156646

Re: Lysis: An experimental .smx decompiler

You'll need to create that weaponKB array yourself again, but the plugin itself is straight forward.

PHP Code:


		
			
new PlVers:__version = 5;
new Float:NULL_VECTOR[3];
new String:NULL_STRING[1];
new Extension:__ext_core = 68;
new MaxClients;
new Extension:__ext_sdktools = 184;
public Plugin:myinfo =
{
    name = "KnockBack",
    description = "Weapon Knock Back",
    author = "ýý¿ýýý",
    version = "1.0",
    url = ""
};
new String:weaponKB[28][2][64] =
{
    {
        "knife",
        "0.0"
    },
    {
        "glock",
        "1000.0"
    },
    {
        "usp",
        "1000.0"
    }
}
public __ext_core_SetNTVOptional()
{
    MarkNativeAsOptional("GetFeatureStatus");
    MarkNativeAsOptional("RequireFeature");
    MarkNativeAsOptional("AddCommandListener");
    MarkNativeAsOptional("RemoveCommandListener");
    VerifyCoreVersion();
    return 0;
}

ScaleVector(Float:vec[3], Float:scale)
{
    new var1 = vec;
    var1[0] = FloatMul(var1[0], scale);
    new var2 = vec[4];
    var2 = FloatMul(var2, scale);
    new var3 = vec[8];
    var3 = FloatMul(var3, scale);
    return 0;
}

MakeVectorFromPoints(Float:pt1[3], Float:pt2[3], Float:output[3])
{
    output[0] = FloatSub(pt2[0], pt1[0]);
    output[4] = FloatSub(pt2[4], pt1[4]);
    output[8] = FloatSub(pt2[8], pt1[8]);
    return 0;
}

bool:StrEqual(String:str1[], String:str2[], bool:caseSensitive)
{
    return strcmp(str1, str2, caseSensitive) == 0;
}

public OnPluginStart()
{
    CreateConVar("knockback_version", "1.0", "knockback plugin info cvar", 8448, false, 0.0, false, 0.0);
    HookEvent("player_hurt", EventHook:5, EventHookMode:1);
    return 0;
}

public Action:Player_Hurt(Handle:event, String:name[], bool:dontBroadcast)
{
    new Client = GetClientOfUserId(GetEventInt(event, "userid"));
    new Attacker = GetClientOfUserId(GetEventInt(event, "Attacker"));
    new var1;
    if (AliveCheck(Client) == 1) {
        decl String:k_weapon[32];
        GetEventString(event, "weapon", k_weapon, 32);
        new i = 0;
        while (i < 28) {
            new var2 = weaponKB[i][0][0];
            if (StrEqual(var2[0][var2], k_weapon, true)) {
                decl Float:Clientposition[3];
                decl Float:targetposition[3];
                decl Float:vector[3];
                GetClientEyePosition(Attacker, Clientposition);
                GetClientEyePosition(Client, targetposition);
                MakeVectorFromPoints(Clientposition, targetposition, vector);
                NormalizeVector(vector, vector);
                ScaleVector(vector, StringToFloat(weaponKB[i][0][0][4]));
                TeleportEntity(Client, NULL_VECTOR, NULL_VECTOR, vector);
            }
            i++;
        }
    }
    return Action:0;
}

public bool:AliveCheck(Client)
{
    new var1;
    if (Client > 0) {
        if (IsClientConnected(Client) == 1) {
            if (IsClientInGame(Client) == 1) {
                if (IsPlayerAlive(Client) == 1) {
                    return true;
                }
                return false;
            }
            return false;
        }
        return false;
    }
    return false;
}

Re: Lysis: An experimental .smx decompiler

how did you get it to decompile so well?

Re: Lysis: An experimental .smx decompiler

PHP Code:


		
			
new PlVers:__version = 5;
new Float:NULL_VECTOR[3];
new String:NULL_STRING[1];
new Extension:__ext_core = 68;
new MaxClients;
new Extension:__ext_sdktools = 184;
public Plugin:myinfo =
{
    name = "KnockBack",
    description = "Weapon Knock Back",
    author = "ýý¿ýýý",
    version = "1.0",
    url = ""
};
new String:weaponKB[28][2][64] =
{
    {
        "knife",
        "0.0"
    },
    {
        "glock",
        "40.0"
    },
    {
        "usp",
        "40.0"
    },
    {
        "p228",
        "40.0"
    },
    {
        "deagle",
        "50.0"
    },
    {
        "fiveseven",
        "40.0"
    },
    {
        "elite",
        "40.0"
    },
    {
        "m3",
        "100.0"
    },
    {
        "xm1014",
        "80.0"
    },
    {
        "tmp",
        "50.0"
    },
    {
        "mac10",
        "50.0"
    },
    {
        "ump45",
        "60.0"
    },
    {
        "mp5navy",
        "60.0"
    },
    {
        "p90",
        "60.0"
    },
    {
        "galil",
        "70.0"
    },
    {
        "ak47",
        "70.0"
    },
    {
        "m4a1",
        "70.0"
    },
    {
        "famas",
        "70.0"
    },
    {
        "aug",
        "70.0"
    },
    {
        "sg552",
        "70.0"
    },
    {
        "m249",
        "70.0"
    },
    {
        "scout",
        "150.0"
    },    
    {
        "awp",
        "250.0"
    },
    {
        "sg550",
        "80.0"
    },
    {
        "g3sg1",
        "80.0"
    }
}
public __ext_core_SetNTVOptional()
{
    MarkNativeAsOptional("GetFeatureStatus");
    MarkNativeAsOptional("RequireFeature");
    MarkNativeAsOptional("AddCommandListener");
    MarkNativeAsOptional("RemoveCommandListener");
    VerifyCoreVersion();
    return 0;
}

ScaleVector(Float:vec[3], Float:scale)
{
    new var1 = vec;
    var1[0] = FloatMul(var1[0], scale);
    new var2 = vec[4];
    var2 = FloatMul(var2, scale);
    new var3 = vec[8];
    var3 = FloatMul(var3, scale);
    return 0;
}

MakeVectorFromPoints(Float:pt1[3], Float:pt2[3], Float:output[3])
{
    output[0] = FloatSub(pt2[0], pt1[0]);
    output[4] = FloatSub(pt2[4], pt1[4]);
    output[8] = FloatSub(pt2[8], pt1[8]);
    return 0;
}

bool:StrEqual(String:str1[], String:str2[], bool:caseSensitive)
{
    return strcmp(str1, str2, caseSensitive) == 0;
}

public OnPluginStart()
{
    CreateConVar("knockback_version", "1.0", "knockback plugin info cvar", 8448, false, 0.0, false, 0.0);
    HookEvent("player_hurt", EventHook:5, EventHookMode:1);
    return 0;
}

public Action:Player_Hurt(Handle:event, String:name[], bool:dontBroadcast)
{
    new Client = GetClientOfUserId(GetEventInt(event, "userid"));
    new Attacker = GetClientOfUserId(GetEventInt(event, "Attacker"));
    new var1;
    if (AliveCheck(Client) == 1) {
        decl String:k_weapon[32];
        GetEventString(event, "weapon", k_weapon, 32);
        new i = 0;
        while (i < 28) {
            new var2 = weaponKB[i][0][0];
            if (StrEqual(var2[0][var2], k_weapon, true)) {
                decl Float:Clientposition[3];
                decl Float:targetposition[3];
                decl Float:vector[3];
                GetClientEyePosition(Attacker, Clientposition);
                GetClientEyePosition(Client, targetposition);
                MakeVectorFromPoints(Clientposition, targetposition, vector);
                NormalizeVector(vector, vector);
                ScaleVector(vector, StringToFloat(weaponKB[i][0][0][4]));
                TeleportEntity(Client, NULL_VECTOR, NULL_VECTOR, vector);
            }
            i++;
        }
    }
    return Action:0;
}

public bool:AliveCheck(Client)
{
    new var1;
    if (Client > 0) {
        if (IsClientConnected(Client) == 1) {
            if (IsClientInGame(Client) == 1) {
                if (IsPlayerAlive(Client) == 1) {
                    return true;
                }
                return false;
            }
            return false;
        }
        return false;
    }
    return false;
}

I compiled this and got these 11 errors: And where the cool face is its meant to be an 8

/groups/sourcemod/compiler-1.4/include/core.inc(171) : warning 209: function "__ext_core_SetNTVOptional" should return a value
/groups/sourcemod/compiler-1.4/include/vector.inc(160) : warning 209: function "ScaleVector" should return a value
/groups/sourcemod/compiler-1.4/include/vector.inc(188) : warning 209: function "MakeVectorFromPoints" should return a value
/home/groups/sourcemod/upload_tmp/phpDlQwwV.sp(1) : warning 213: tag mismatch
/home/groups/sourcemod/upload_tmp/phpDlQwwV.sp(2) : error 021: symbol already defined: "NULL_VECTOR"
/home/groups/sourcemod/upload_tmp/phpDlQwwV.sp(3) : error 021: symbol already defined: "NULL_STRING"
/home/groups/sourcemod/upload_tmp/phpDlQwwV.sp(4) : warning 213: tag mismatch
/home/groups/sourcemod/upload_tmp/phpDlQwwV.sp(5) : error 021: symbol already defined: "MaxClients"
/home/groups/sourcemod/upload_tmp/phpDlQwwV.sp(117) : error 052: multi-dimensional arrays must be fully initialized
/home/groups/sourcemod/upload_tmp/phpDlQwwV.sp(119) : error 021: symbol already defined: "__ext_core_SetNTVOptional"
/home/groups/sourcemod/upload_tmp/phpDlQwwV.sp(129) : error 021: symbol already defined: "ScaleVector"
/home/groups/sourcemod/upload_tmp/phpDlQwwV.sp(130) : error 033: array must be indexed (variable "-unknown-")
/home/groups/sourcemod/upload_tmp/phpDlQwwV.sp(131) : error 028: invalid subscript (not an array or too many subscripts): "var1"
/home/groups/sourcemod/upload_tmp/phpDlQwwV.sp(131) : warning 215: expression has no effect
/home/groups/sourcemod/upload_tmp/phpDlQwwV.sp(131) : error 001: expected token: ";", but found "]"
/home/groups/sourcemod/upload_tmp/phpDlQwwV.sp(131) : error 029: invalid expression, assumed zero
/home/groups/sourcemod/upload_tmp/phpDlQwwV.sp(131) : fatal error 127: too many error messages on one line

Re: Lysis: An experimental .smx decompiler

You can't just compile the decompiled plugins. You'll have to clean it up or better just rewrite it, as it's that simple. The only interesting code is in the player_hurt event handler.

Quote:

Originally Posted by TnTSCS (Post 1745653)

how did you get it to decompile so well?

I changed the dumpStringArray method to not try to access invalid indexes, it's not a good solution as lots of the array is missing as you can see ;)

Re: Lysis: An experimental .smx decompiler

Quote:

Originally Posted by Peace-Maker (Post 1746078)

You can't just compile the decompiled plugins. You'll have to clean it up or better just rewrite it, as it's that simple. The only interesting code is in the player_hurt event handler.

I changed the dumpStringArray method to not try to access invalid indexes, it's not a good solution as lots of the array is missing as you can see ;)

Are you able to quickly do this for me? Please....