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Merged
hmlendea merged 2 commits into from
Apr 20, 2026
Merged

Greatly improved obfuscation #8

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fd184f4
dev: Greatly improved obfuscation
hmlendea Apr 20, 2026
23f60b1
dev: Version bump
hmlendea Apr 20, 2026
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9 changes: 8 additions & 1 deletion NuciText.Obfuscation.UnitTests/NuciTextObfuscatorTests.cs
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Expand Up @@ -6,7 +6,7 @@ public class NuciTextObfuscatorTests
{
static int TestSeed => 123456789;
static string TestPlainString => "Test string!";
static string TestObfuscatedString => "ꓔеst strіng!";
static string TestObfuscatedString => "Ꭲеst strіng!";
static NuciTextObfuscatorOptions TestObfuscatorOptions => new()
{
UseApproximateReplacements = true
Expand Down Expand Up @@ -59,5 +59,12 @@ public void GivenAValidString_WhenDeobfuscating_ThenTheResultHasBeenDeobfuscated
[Test]
public void GivenAValidString_WhenObfuscating_ThenTheResultHasBeenObfuscated()
=> Assert.That(obfuscator.Obfuscate(TestPlainString, TestObfuscatorOptions), Is.EqualTo(TestObfuscatedString));

[Test]
[TestCase("ciocolatǎ albă", "ciocolată albă")]
public void GivenAnObfuscatedString_WhenDeobfuscating_ThenTheResultIsTheDeobfuscatedString(
string obfuscatedString,
string deobfuscatedString)
=> Assert.That(obfuscator.Deobfuscate(obfuscatedString), Is.EqualTo(deobfuscatedString));
}
}
154 changes: 112 additions & 42 deletions NuciText.Obfuscation/NuciText.Obfuscation.cs
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Expand Up @@ -76,97 +76,167 @@ public sealed class NuciTextObfuscator(int seed) : INuciTextObfuscator
{ ':', "։꞉" },
{ ';', ";" },
{ '\'', "′´ʹ‘’" },
{ '"', "”″" },
{ '\"', "”″" },
{ '|', "ǀ" },
{ 'ǀ', "|" },
{ '/', "⁄⧸" },
{ '\\', "⧵⧹" },
{ '-', "‐–" },
{ '+', "𖫵" },
{ '<', "ᐸ𖫬ⵦ" },
{ '>', "ᐳ" },
{ '3', "З" },
{ 'Ʒ', "Ӡ" },
{ 'Ӡ', "Ʒ" },

{ 'Æ', "Ӕ" },
{ 'æ', "ӕ" },
{ 'A', "АΑꓮ" },
{ 'B', "ВΒꓐ" },
{ 'C', "" }, // intentionally empty (JS had no identical C)
{ 'D', "ᗞꓓ" },
{ 'E', "ЕΕꓰ" },
{ 'F', "ꓝ" },
{ 'G', "ꓖ" },
{ 'H', "НΗꓧ" },

{ 'A', "АΑꓮ" }, // The following don't work in some fonts: 𝖠
{ 'Ă', "ӐǍ" },
{ 'Â', "Ȃ" },
{ 'B', "ВΒꓐ" }, // The following don't work in some fonts: 𝖡
{ 'D', "ᗞꓓ" }, // The following don't work in some fonts: 𝖣
{ 'Đ', "ÐƉ" },
{ 'Ð', "ĐƉ" },
{ 'Ɖ', "ÐĐ" },
{ 'E', "ЕΕꓰ" }, // The following don't work in some fonts: 𝖤
{ 'Ĕ', "Ӗ" },
{ 'Ë', "Ё" },
{ 'F', "ꓝ" }, // The following don't work in some fonts: 𝖥
{ 'G', "ꓖ" }, // The following don't work in some fonts: 𝖦
{ 'H', "НΗꓧ" }, // The following don't work in some fonts: 𝖧
{ 'I', "ІΙӀӏ" },
{ 'J', "Јꓙ" },
{ 'K', "КKΚꓗ" },
{ 'L', "Ꮮꓡ" },
{ 'M', "МΜϺ" },
{ 'N', "Νꓠ" },
{ 'O', "ОΟՕꓳ" },
{ 'P', "РΡ" },
{ 'S', "Ѕჽ" },
{ 'T', "ТΤꓔ" },
{ 'U', "ꓴՍ" },
{ 'V', "ⴸꛟꓦ" },
{ 'W', "Ԝꓪ" },
{ 'X', "ХΧⵝꓫ" },
{ 'Y', "ΥҮꓬ" },
{ 'Z', "Ζꓜ" },

{ 'a', "а" },
{ 'Î', "Ȋ" },
{ 'Ï', "ЇΪ" },
{ 'J', "Јꓙ" }, // The following don't work in some fonts: 𝖩 // The following look different in some fonts: Ϳ
{ 'K', "КKΚꓗ" }, // The following don't work in some fonts: 𝖪
{ 'Ḱ', "Ќ" },
{ 'L', "Ꮮꓡ" }, // The following don't work in some fonts: 𝖫𐐛
{ 'M', "МΜϺ" }, // The following don't work in some fonts: 𝖬
{ 'N', "Νꓠ" }, // The following don't work in some fonts: 𝖭
{ 'O', "ОΟՕꓳ" }, // The following don't work in some fonts: 𝖮𐓂𖫩
{ 'Ö', "Ӧ" },
{ 'Ө', "Ѳθ" },
{ 'ϴ', "Ɵ" },
{ 'P', "РΡ" }, // The following don't work in some fonts: 𝖯
{ 'Q', "Ԛ" }, // The following don't work in some fonts: 𝖰
{ 'S', "Ѕჽ" }, // The following don't work in some fonts: 𖫖𝖲
{ 'Ṣ', "ȘŞ" },
{ 'Ş', "ȘṢ" },
{ 'Ș', "ȘṢ" },
{ 'Ţ', "ȚṬ" },
{ 'Ț', "ȚŢ" },
{ 'Ṭ', "ȚŢ" },
{ 'U', "ꓴՍ" }, // The following don't work in some fonts: 𝖴𐓎
{ 'V', "ⴸꛟꓦ" }, // The following don't work in some fonts: 𝖵
{ 'W', "Ԝꓪ" }, // The following don't work in some fonts: 𝖶
{ 'X', "ХΧⵝꓫ" }, // The following don't work in some fonts: 𝖷
{ 'Y', "ΥҮꓬ" }, // The following don't work in some fonts: 𝖸
{ 'Z', "Ζꓜ" }, // The following don't work in some fonts: 𝖹Ⴭꛉ

{ 'a', "а" }, // The following don't work in some fonts: 𝖺
{ 'ă', "ӑǎ" },
{ 'â', "ȃ" },
{ 'c', "сϲᴄ" },
{ 'e', "е" },
{ 'e', "е" }, // The following don't work in some fonts: 𝖾
{ 'è', "ѐ" },
{ 'ë', "ё" },
{ 'ĕ', "ӗ" },
{ 'i', "і" },
{ 'î', "ȋ" },
{ 'ï', "ї" },
{ 'j', "ј" },
{ 'k', "ĸк" },
{ 'o', "оօο" },
{ 'ɫ', "ɬᏐ" },
{ 'o', "оօο" }, // The following don't work in some fonts: 𐓪𐐬 // The following is looks too differnt in some fonts: ௦
{ 'ö', "ӧ" },
{ 'ó', "όό" },
{ 'ò', "ὸ" },
{ 'ө', "ɵꮎ" },
{ 'θ', "ӨѲ𖺀" },
{ 'p', "р" },
{ 'q', "ԛ" },
{ 's', "ѕ" },
{ 's', "ѕ" }, // The following don't work in some fonts: 𝗌
{ 'ș', "şṣ" },
{ 'ş', "șṣ" },
{ 'ṣ', "șş" },
{ 'ț', "ţṭ" },
{ 'ţ', "țṭ" },
{ 'ṭ', "țţ" },
{ 'w', "ԝꮃ" },
{ 'x', "х" },
{ 'y', "уү" },
{ 'ÿ', "ӱ" },
{ 'z', "ꮓ" }
};

private static readonly Dictionary<char, string> ApproximateReplacements = new()
{
{ '\'', "ʹ" },
{ '3', "Ӡ" },

//"0": "߀", // This can turn the text left-to-right
{ '3', "Ӡ" }, // The following look too different: Ʒ
{ 'Ӡ', "3З" },
{ '5', "Ƽ" },
{ '6', "бᏮ" },

{ 'A', "ᗅᎪ" },
{ 'Ă', "Ā" },
{ 'B', "Ᏼᗷꕗ" },
{ 'C', "ᏟᑕⅭ" },
{ 'D', "ᎠⅮ" },
{ 'C', "ᏟᑕⅭ" }, // Ⅽ makes the next character uppercase on iOS
{ 'D', "ᎠⅮ" }, // "Ⅾ" makes the next character uppercase on iOS
{ 'E', "Ꭼⴹ⋿ꗋ" },
{ 'F', "Ϝ" }, // Ϝ does not look identical in some fonts
{ 'G', "ᏀႺ" },
{ 'I', "ꓲⅠⵏߊꕯ" },
{ 'H', "Ꮋ" },
{ 'I', "ꓲⅠⵏߊꕯ" }, // Stretch // The following look different on some fonts: ꕯ // The following don't work on some fonts: 𝖨𞥑 𞠢
// The following looks too different: Լ
{ 'J', "Ꭻ" },
{ 'K', "Ꮶ" },
{ 'L', "Ⅼ" },
{ 'M', "ꓟᎷⅯ" },
{ 'O', "ⵔ" },
{ 'Ө', "ƟϴᎾ" },
{ 'P', "ꓑᏢ" },
{ 'Q', "ǪႭ" },
{ 'R', "ᎡꓣᏒ" },
{ 'S', "ꓢᏚՏႽ" },
{ 'T', "ㄒᎢꔋ" },
{ 'Ț', "Ҭ" },
// { 'U', // The following don't work in some fonts: 𞤋 // The following look too different in some fonts: ᑌ⋃
{ 'V', "ᐯᏙⅤ" },
{ 'W', "ᎳᏔ" },
// { 'X', "᙭Ꭓχ"
{ 'X', "Ⅹ" },
{ 'Z', "Ꮓ" },

{ 'c', "ꮯⅽ" },
{ 'd', "ძⅾ" },
{ 'ă', "ā" },
// { 'b', // The following are broken in some fonts: ხ // The following look different in some fonts: ᏏЬƅ
{ 'c', "ꮯⅽ" }, // "ꮯ" has a weird top right at least on iOS and "ⅽ" makes the next character after it uppercase
{ 'd', "ძⅾ" }, // The following don't work in some fonts: 𝖽. The following look too different in some fonts: ԁ. "ⅾ" makes the next character uppercase on iOS

{ 'g', "ɡց" },
{ 'h', "ᏂႹ" },
{ 'i', "Ꭵⅰ" },
{ 'k', "κꮶ" },
{ 'm', "ⅿ" },
{ 'o', "ჿ" },
//{ 'h', "հ" }, // "հ" looks like some arabic letter on iOS
{ 'h', "ᏂႹ" }, // "һ", // Confirmed to look quite different in many fonts
{ 'i', "Ꭵⅰ" }, // This might be a bit of a stretch
{ 'ı', "ɪ" },
{ 'ɪ', "ı" },
{ 'ĭ', "ǐ" },
{ 'j', "ϳ" },
{ 'k', "κкκꮶ" },
{ 'ł', "ɫɬᏐ" },
{ 'ɫ', "ł" },
{ 'ɬ', "ł" },
{ 'm', "ⅿ" }, // The following don't work in some fonts: ՠ. ՠ also makes the next character uppercase on iOS
{ 'o', "ഠჿ" }, // The following look different in some fonts: ೦. ჿ is broken in Instagram on Android
{ 'p', "ρƿ" },
{ 's', "ടꮪꜱ" },
{ 's', "ടꮪꜱ" }, // ꜱ looks ok but doesn't work on e.g. Apple Watch
// u // The following don't work in some fonts: 𐓶
{ 'u', "υ" },
{ 'v', "ꮩνⅴ" },
{ 'ú', "ύ" },
{ 'v', "ꮩνⅴ" }, // The following have large paddings: ∨
{ 'w', "ꮤ" }, // The following look different in some fonts: ꮃ
{ 'x', "ⅹ" },
{ 'y', "γʏ" }
};
Expand Down
2 changes: 1 addition & 1 deletion NuciText.Obfuscation/NuciText.Obfuscation.csproj
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Expand Up @@ -3,7 +3,7 @@
<PropertyGroup>
<TargetFramework>net10.0</TargetFramework>
<RootNamespace>NuciText.Obfuscation</RootNamespace>
<Version>1.0.0</Version>
<Version>1.1.0</Version>
<Description>NuciText Obfuscation</Description>
<Authors>Horațiu Mlendea</Authors>
<Copyright>Copyright 2026 © Horațiu Mlendea</Copyright>
Expand Down
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