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add nice pictures to presentation slides

master
nitowa преди 10 месеца
родител
ревизия
fccf1b99c2
променени са 4 файла, в които са добавени 26 реда и са изтрити 8 реда
  1. Двоични данни
      SemSEpresentation/slides.pdf
  2. 26
    8
      SemSEpresentation/slides.tex
  3. Двоични данни
      SemSEpresentation/slither.jpg
  4. Двоични данни
      SemSEpresentation/storage.jpg

Двоични данни
SemSEpresentation/slides.pdf Целия файл


+ 26
- 8
SemSEpresentation/slides.tex Целия файл

@@ -27,6 +27,8 @@
27 27
 \usepackage{booktabs}
28 28
 \usepackage{url}
29 29
 \usepackage{xcolor}
30
+\usepackage{graphicx}
31
+\graphicspath{ {./} }
30 32
 
31 33
 \definecolor{codegreen}{rgb}{0,0.6,0}
32 34
 \definecolor{codegray}{rgb}{0.5,0.5,0.5}
@@ -110,6 +112,22 @@
110 112
   Examples follow, use in production at your own risk ;)
111 113
 \end{frame}
112 114
 
115
+\begin{frame}[fragile]
116
+	\frametitle{Why this works}
117
+	A dynamic array in storage slot $p$ stores its data at continuous addresses starting at $keccak(p)$. 
118
+	
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+	For example, if the variable $x$ is a dynamic array occupying storage slot 3, $x[o]$ can be found at $keccak(0x3)+o$.
120
+	
121
+	An attacker can use this information to overwrite any storage slot by finding an appropriate offset value.
122
+\end{frame}
123
+
124
+\begin{frame}[fragile]
125
+	\frametitle{Why this works}
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+	
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+	\includegraphics[width=\textwidth]{storage}
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+	
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+\end{frame}
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+
113 131
 \subsection[Examples]{Examples}
114 132
 \begin{frame}[fragile]
115 133
   \frametitle{Unchecked Array Write}
@@ -194,14 +212,7 @@ contract MyContract {
194 212
 	\end{lstlisting}
195 213
 \end{frame}
196 214
 
197
-\begin{frame}[fragile]
198
-	\frametitle{Why this works}
199
-	A dynamic array in storage slot $p$ stores its data at continuous addresses starting at $keccak(p)$. 
200
-	
201
-	For example, if the variable $x$ is a dynamic array occupying storage slot 3, $x[o]$ can be found at $keccak(0x3)+o$.
202
-	
203
-	An attacker can use this information to overwrite any storage slot by finding an appropriate offset value.
204
-\end{frame}
215
+
205 216
 
206 217
 \section{Detecting and Exploiting}
207 218
 \subsection[Detecting SWC-124]{Detecting SWC-124}
@@ -234,6 +245,13 @@ contract MyContract {
234 245
   \end{itemize}
235 246
 \end{frame}
236 247
 
248
+\begin{frame}[fragile]
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+	\texttt{\$ slither Bethorde.sol --print variable-order}
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+
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+	\includegraphics[width=\textwidth]{slither}
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+
253
+\end{frame}
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+
237 255
 \subsection[Exploiting SWC-124]{Exploiting SWC-124}
238 256
 
239 257
 % TODO: Exploitation is trivial, should we just go back and explain or should we go into memory layout? Can we handle it in time?

Двоични данни
SemSEpresentation/slither.jpg Целия файл


Двоични данни
SemSEpresentation/storage.jpg Целия файл


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