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gcc编译中保护机制的关闭和开启.html
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gcc编译中保护机制的关闭和开启
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<li><p>NX：不允许执行栈上的数据，即无法使用JMP ESP；<span id="more"></span></p>
<figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">-z execstack / -z noexecstack</span><br><span class="line">(关闭/开启)</span><br></pre></td></tr></table></figure></li>
<li><p>Canary：栈里插入cookie信息；</p>
<figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">-fno-stack-protector / -fstack-protector / -fstack-protector-all</span><br><span class="line">(关闭/开启/全开启) </span><br></pre></td></tr></table></figure></li>
<li><p>PIE：地址随机化，另外打开后会有get_pc_thunk；</p>
<figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">-no-pie / -pie</span><br><span class="line">(关闭/开启)</span><br></pre></td></tr></table></figure></li>
<li><p>RELRO：对GOT表具有写权限；</p>
<figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">-z norelro / -z lazy / -z now</span><br><span class="line">(关闭/部分开启/完全开启)</span><br></pre></td></tr></table></figure></li>
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