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Module: Msf::Exploit::Remote::HTTP::FlaskUnsign::Session
&mdash; Documentation by YARD 0.9.37
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<span class='title'><span class='object_link'><a href="../../../../../Msf.html" title="Msf (module)">Msf</a></span></span> &raquo; <span class='title'><span class='object_link'><a href="../../../../Exploit.html" title="Msf::Exploit (class)">Exploit</a></span></span> &raquo; <span class='title'><span class='object_link'><a href="../../../Remote.html" title="Msf::Exploit::Remote (class)">Remote</a></span></span> &raquo; <span class='title'><span class='object_link'><a href="../../HTTP.html" title="Msf::Exploit::Remote::HTTP (module)">HTTP</a></span></span> &raquo; <span class='title'><span class='object_link'><a href="../FlaskUnsign.html" title="Msf::Exploit::Remote::HTTP::FlaskUnsign (module)">FlaskUnsign</a></span></span>
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<span class="title">Session</span>
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<div id="content"><h1>Module: Msf::Exploit::Remote::HTTP::FlaskUnsign::Session
</h1>
<div class="box_info">
<dl>
<dt>Defined in:</dt>
<dd>lib/msf/core/exploit/remote/http/flask_unsign.rb</dd>
</dl>
</div>
<h2>Overview</h2><div class="docstring">
<div class="discussion">
<p>This emulates the default cookie-based session storage used by the latest version of Flask as of the time of this writing (2023-09-07). See: <a href="https://github.com/pallets/flask/blob/8037487165a196015a646de25cbce6d0351c8fc4/src/flask/sessions.py#L276">github.com/pallets/flask/blob/8037487165a196015a646de25cbce6d0351c8fc4/src/flask/sessions.py#L276</a></p>
</div>
</div>
<div class="tags">
</div>
<h2>
Constant Summary
<small><a href="#" class="constants_summary_toggle">collapse</a></small>
</h2>
<dl class="constants">
<dt id="DEFAULT_SALT-constant" class="">DEFAULT_SALT =
</dt>
<dd><pre class="code"><span class='tstring'><span class='tstring_beg'>&#39;</span><span class='tstring_content'>cookie-session</span><span class='tstring_end'>&#39;</span></span></pre></dd>
</dl>
<h2>
Class Method Summary
<small><a href="#" class="summary_toggle">collapse</a></small>
</h2>
<ul class="summary">
<li class="public ">
<span class="summary_signature">
<a href="#decode-class_method" title="decode (class method)">.<strong>decode</strong>(value) &#x21d2; Object </a>
</span>
<span class="summary_desc"><div class='inline'></div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#parse-class_method" title="parse (class method)">.<strong>parse</strong>(value) &#x21d2; Object </a>
</span>
<span class="summary_desc"><div class='inline'></div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#sign-class_method" title="sign (class method)">.<strong>sign</strong>(value, secret, salt: DEFAULT_SALT) &#x21d2; Object </a>
</span>
<span class="summary_desc"><div class='inline'></div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#valid%3F-class_method" title="valid? (class method)">.<strong>valid?</strong>(value, secret, salt: DEFAULT_SALT) &#x21d2; Boolean </a>
</span>
<span class="summary_desc"><div class='inline'></div></span>
</li>
</ul>
<div id="class_method_details" class="method_details_list">
<h2>Class Method Details</h2>
<div class="method_details first">
<h3 class="signature first" id="decode-class_method">
.<strong>decode</strong>(value) &#x21d2; <tt>Object</tt>
</h3><table class="source_code">
<tr>
<td>
<pre class="lines">
70
71
72</pre>
</td>
<td>
<pre class="code"><span class="info file"># File 'lib/msf/core/exploit/remote/http/flask_unsign.rb', line 70</span>
<span class='kw'>def</span> <span class='kw'>self</span><span class='period'>.</span><span class='id identifier rubyid_decode'>decode</span><span class='lparen'>(</span><span class='id identifier rubyid_value'>value</span><span class='rparen'>)</span>
<span class='id identifier rubyid_parse'>parse</span><span class='lparen'>(</span><span class='id identifier rubyid_value'>value</span><span class='rparen'>)</span><span class='lbracket'>[</span><span class='symbol'>:deserialized</span><span class='rbracket'>]</span>
<span class='kw'>end</span></pre>
</td>
</tr>
</table>
</div>
<div class="method_details ">
<h3 class="signature " id="parse-class_method">
.<strong>parse</strong>(value) &#x21d2; <tt>Object</tt>
</h3><table class="source_code">
<tr>
<td>
<pre class="lines">
74
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</td>
<td>
<pre class="code"><span class="info file"># File 'lib/msf/core/exploit/remote/http/flask_unsign.rb', line 74</span>
<span class='kw'>def</span> <span class='kw'>self</span><span class='period'>.</span><span class='id identifier rubyid_parse'>parse</span><span class='lparen'>(</span><span class='id identifier rubyid_value'>value</span><span class='rparen'>)</span>
<span class='id identifier rubyid_compressed'>compressed</span> <span class='op'>=</span> <span class='id identifier rubyid_value'>value</span><span class='period'>.</span><span class='id identifier rubyid_start_with?'>start_with?</span><span class='lparen'>(</span><span class='tstring'><span class='tstring_beg'>&#39;</span><span class='tstring_content'>.</span><span class='tstring_end'>&#39;</span></span><span class='rparen'>)</span>
<span class='id identifier rubyid_value'>value</span> <span class='op'>=</span> <span class='id identifier rubyid_value'>value</span><span class='lbracket'>[</span><span class='int'>1</span><span class='op'>..</span><span class='rbracket'>]</span> <span class='kw'>if</span> <span class='id identifier rubyid_compressed'>compressed</span>
<span class='id identifier rubyid_serialized'>serialized</span><span class='comma'>,</span> <span class='id identifier rubyid_signature'>signature</span> <span class='op'>=</span> <span class='id identifier rubyid_value'>value</span><span class='period'>.</span><span class='id identifier rubyid_split'>split</span><span class='lparen'>(</span><span class='tstring'><span class='tstring_beg'>&#39;</span><span class='tstring_content'>.</span><span class='tstring_end'>&#39;</span></span><span class='comma'>,</span> <span class='int'>3</span><span class='rparen'>)</span>
<span class='id identifier rubyid_value'>value</span> <span class='op'>=</span> <span class='const'>Base64</span><span class='period'>.</span><span class='id identifier rubyid_urlsafe_decode64'>urlsafe_decode64</span><span class='lparen'>(</span><span class='id identifier rubyid_serialized'>serialized</span><span class='rparen'>)</span>
<span class='id identifier rubyid_value'>value</span> <span class='op'>=</span> <span class='const'>Zlib</span><span class='op'>::</span><span class='const'>Inflate</span><span class='period'>.</span><span class='id identifier rubyid_inflate'>inflate</span><span class='lparen'>(</span><span class='id identifier rubyid_value'>value</span><span class='rparen'>)</span> <span class='kw'>if</span> <span class='id identifier rubyid_compressed'>compressed</span>
<span class='lbrace'>{</span> <span class='label'>compressed:</span> <span class='id identifier rubyid_compressed'>compressed</span><span class='comma'>,</span> <span class='label'>signature:</span> <span class='id identifier rubyid_signature'>signature</span><span class='comma'>,</span> <span class='label'>deserialized:</span> <span class='const'>JSON</span><span class='period'>.</span><span class='id identifier rubyid_parse'>parse</span><span class='lparen'>(</span><span class='id identifier rubyid_value'>value</span><span class='rparen'>)</span><span class='comma'>,</span> <span class='label'>serialized:</span> <span class='id identifier rubyid_serialized'>serialized</span> <span class='rbrace'>}</span>
<span class='kw'>end</span></pre>
</td>
</tr>
</table>
</div>
<div class="method_details ">
<h3 class="signature " id="sign-class_method">
.<strong>sign</strong>(value, secret, salt: DEFAULT_SALT) &#x21d2; <tt>Object</tt>
</h3><table class="source_code">
<tr>
<td>
<pre class="lines">
84
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<pre class="code"><span class="info file"># File 'lib/msf/core/exploit/remote/http/flask_unsign.rb', line 84</span>
<span class='kw'>def</span> <span class='kw'>self</span><span class='period'>.</span><span class='id identifier rubyid_sign'>sign</span><span class='lparen'>(</span><span class='id identifier rubyid_value'>value</span><span class='comma'>,</span> <span class='id identifier rubyid_secret'>secret</span><span class='comma'>,</span> <span class='label'>salt:</span> <span class='const'><span class='object_link'><a href="#DEFAULT_SALT-constant" title="Msf::Exploit::Remote::HTTP::FlaskUnsign::Session::DEFAULT_SALT (constant)">DEFAULT_SALT</a></span></span><span class='rparen'>)</span>
<span class='id identifier rubyid_json'>json</span> <span class='op'>=</span> <span class='const'>JSON</span><span class='period'>.</span><span class='id identifier rubyid_dump'>dump</span><span class='lparen'>(</span><span class='id identifier rubyid_value'>value</span><span class='rparen'>)</span>
<span class='id identifier rubyid_signer'>signer</span> <span class='op'>=</span> <span class='const'><span class='object_link'><a href="URLSafeTimedSigner.html" title="Msf::Exploit::Remote::HTTP::FlaskUnsign::URLSafeTimedSigner (class)">URLSafeTimedSigner</a></span></span><span class='period'>.</span><span class='id identifier rubyid_new'><span class='object_link'><a href="URLSafeSigner.html#initialize-instance_method" title="Msf::Exploit::Remote::HTTP::FlaskUnsign::URLSafeSigner#initialize (method)">new</a></span></span><span class='lparen'>(</span><span class='id identifier rubyid_secret'>secret</span><span class='comma'>,</span> <span class='id identifier rubyid_salt'>salt</span><span class='rparen'>)</span>
<span class='id identifier rubyid_signer'>signer</span><span class='period'>.</span><span class='id identifier rubyid_sign'>sign</span><span class='lparen'>(</span><span class='const'><span class='object_link'><a href="../FlaskUnsign.html" title="Msf::Exploit::Remote::HTTP::FlaskUnsign (module)">FlaskUnsign</a></span></span><span class='period'>.</span><span class='id identifier rubyid_base64_encode'><span class='object_link'><a href="../FlaskUnsign.html#base64_encode-class_method" title="Msf::Exploit::Remote::HTTP::FlaskUnsign.base64_encode (method)">base64_encode</a></span></span><span class='lparen'>(</span><span class='id identifier rubyid_json'>json</span><span class='rparen'>)</span><span class='period'>.</span><span class='id identifier rubyid_strip'>strip</span><span class='rparen'>)</span>
<span class='kw'>end</span></pre>
</td>
</tr>
</table>
</div>
<div class="method_details ">
<h3 class="signature " id="valid?-class_method">
.<strong>valid?</strong>(value, secret, salt: DEFAULT_SALT) &#x21d2; <tt>Boolean</tt>
</h3><div class="docstring">
<div class="discussion">
</div>
</div>
<div class="tags">
<p class="tag_title">Returns:</p>
<ul class="return">
<li>
<span class='type'>(<tt>Boolean</tt>)</span>
</li>
</ul>
</div><table class="source_code">
<tr>
<td>
<pre class="lines">
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</td>
<td>
<pre class="code"><span class="info file"># File 'lib/msf/core/exploit/remote/http/flask_unsign.rb', line 90</span>
<span class='kw'>def</span> <span class='kw'>self</span><span class='period'>.</span><span class='id identifier rubyid_valid?'>valid?</span><span class='lparen'>(</span><span class='id identifier rubyid_value'>value</span><span class='comma'>,</span> <span class='id identifier rubyid_secret'>secret</span><span class='comma'>,</span> <span class='label'>salt:</span> <span class='const'><span class='object_link'><a href="#DEFAULT_SALT-constant" title="Msf::Exploit::Remote::HTTP::FlaskUnsign::Session::DEFAULT_SALT (constant)">DEFAULT_SALT</a></span></span><span class='rparen'>)</span>
<span class='id identifier rubyid_signer'>signer</span> <span class='op'>=</span> <span class='const'><span class='object_link'><a href="URLSafeTimedSigner.html" title="Msf::Exploit::Remote::HTTP::FlaskUnsign::URLSafeTimedSigner (class)">URLSafeTimedSigner</a></span></span><span class='period'>.</span><span class='id identifier rubyid_new'><span class='object_link'><a href="URLSafeSigner.html#initialize-instance_method" title="Msf::Exploit::Remote::HTTP::FlaskUnsign::URLSafeSigner#initialize (method)">new</a></span></span><span class='lparen'>(</span><span class='id identifier rubyid_secret'>secret</span><span class='comma'>,</span> <span class='id identifier rubyid_salt'>salt</span><span class='rparen'>)</span>
<span class='id identifier rubyid_signer'>signer</span><span class='period'>.</span><span class='id identifier rubyid_valid?'>valid?</span><span class='lparen'>(</span><span class='id identifier rubyid_value'>value</span><span class='rparen'>)</span>
<span class='kw'>end</span></pre>
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