start taking in account feedbacks

slides.typ

@@ -27,8 +27,7 @@
   aspect-ratio    : "16-9",
   title           : [From Large Scale Analysis to Dynamic Deobfuscation],
   subtitle        : [The Woes of Android Reverse Engineering],
-  event           : [], //[PhD Defense],
+  footer-text     : [Jean-Marie Mineau PhD Defense],
-  short-title     : [], //[PhD Defense],
   //short-event     : [Rennes, 2025/12/9],
   title-size      : 32pt,
   section-size    : 18pt,
@@ -113,36 +112,6 @@
   )
 ]
 
-#slide(
-  title: [Analysing Applications: Which Tools?],
-  foreground: eye-3(x: 3%, y: 5%)
-)[
-  #set align(center+horizon)
-  #move(dx: -50pt, image("slides/imgs/apk-analysis.svg", width: 300pt))
-]
-
-// something is broken, so hack to keep the page number at the same
-#counter("logical-slide").update( n => n - 1 )
-
-#slide(
-  title: [Analysing Applications: Which Tools?],
-)[
-  #set list(spacing: 3em)
-  #item-by-item[
-    - #cite(<Li2017>, form: "prose"): systematic literature review for Android static analysis, lists open-sourced tools
-    - #cite(<reaves_droid_2016>, form: "prose"): tests analysis tools, raises concerns about reusability and analysis of 
-      real-world applications
-  ]
-]
-
-// something is broken, so hack to keep the page number at the same
-#counter("logical-slide").update( n => n - 1 )
-#slide(
-  title: [Analysing Applications: Which Tools?],
-)[
-  #highlight-block(pb1-text)
-]
-
 #slide(
   title: [Obfuscation],
   //foreground: eye-1(x: 95%, y: 85%, mirror: true)
@@ -225,21 +194,100 @@
 #slide(
   title: [Obfuscation],
   subtitle: [Deobfuscated],
+  foreground: {
+    place-fg(x: 44%, y: 55%, $ lr(}, size: #130pt) $ )
+    place-fg(x: 44%, y: 26%, $ lr(}, size: #110pt) $ )
+    arrow((385pt, 260pt), (450pt, 230pt))
+    arrow((385pt, 125pt), (450pt, 110pt))
+  },
 )[
   #show: yes-codly
-  #codly(
+  #grid(
-    skips: ((3, 10), (5, 10), (6, 10)),
+    columns: (1fr, 4em, 1fr),
-    ..default-codly
+    [
-  )
+      #scale(60%, reflow: true)[
-  #scale(100%)[
+      ```java
-  ```java
+      String DEX = "ZGV4CjA [...] EAAABEAwAA";
-  public class Foo {
+      String className = "W5f3 [...] 3sls=";
-    public static String bar(String arg) {
+      String methodName = "n6WGYJzjDrUvR9cYljlNlw==";
-    }
+    
-  }
+      ClassLoader cl = new InMemoryDexClassLoader(
+        ByteBuffer.wrap(Base64.decode(DEX, 2)), 
+        Main.class.getClassLoader()
+      );
+    
+      Class<?> loadedClass = this.cl.loadClass(decrypt(className));
+      Object obj = "FooBar";
+      Object ret = loadedClass.getMethod(
+        decrypt(methodName), 
+        String.class
+      ).invoke(null, obj);
+      ```]
+    ],
+    [],
+    [
+      #codly(
+        skips: ((3, 10),),
+        ..default-codly
+      )
+      #scale(100%)[
+      ```java
+      public class Foo {
+        public static String bar(String arg) {
+        }
+      }
+      ```
+      ```java
       String ret = Foo.bar("FooBar");
+      ```]
+    ]
+  )
+]
 
-  ```]
+#slide(
+  foreground: ghost-5(x: 10%, y: 7%)
+)[
+  #set align(center+horizon)
+  #grid(
+    columns: (1fr, 1fr),
+    gutter:  2em,
+    [
+      == Dynamic Analysis
+      #item-by-item[
+        - Run the application
+        - _See_ dynamically loaded bytecode
+        - _See_ reflection calls
+        - Limited by code coverage
+      ]
+    ],
+    [
+      == Static Analysis
+      #item-by-item(start: 5)[
+        - Do *not* run the application
+        - *Not* limited by code coverage
+        - But only for the *code available*
+        //- Some values cannot be computed
+      ]
+
+    ],
+    //grid.cell(colspan: 2, uncover(8)[
+    //  #text(size: 30pt)[Can we combine both?]
+    //]),
+  )
+]
+
+#slide(
+  title: [Analysing Applications: Which Tools?],
+  foreground: eye-3(x: 3%, y: 5%)
+)[
+  #set align(center+horizon)
+  #move(dx: -50pt, image("slides/imgs/apk-analysis.svg", width: 300pt))
+]
+
+#slide(
+  title: [Problem Statement 1],
+)[
+  #highlight-block(pb1-text)
 ]
 
 #slide(
@@ -299,13 +347,13 @@
 
 #counter("logical-slide").update( n => n - 1 )
 #slide(
-  title: [Class Loading],
+  title: [Problem Statement 3],
 )[
   #highlight-block(pb2-text)
 ]
 
 #slide(
-  foreground: ghost-5(x: 10%, y: 7%)
+  title: [Deobuscation],
 )[
   #set align(center+horizon)
   #grid(
@@ -313,47 +361,55 @@
     gutter:  2em,
     [
       == Dynamic Analysis
-      #item-by-item[
+
-        - Run the application
+      Easier to solve Dynamic Code Loading and Reflection Calls
-        - _See_ dynamically loaded bytecode
-        - _See_ reflection calls
-        - Limited by code coverage
-      ]
     ],
     [
       == Static Analysis
-      #item-by-item(start: 5)[
-        - Do *not* run the application
-        - *Not* limited by code coverage
-        - But only for the *code available*
-        //- Some values cannot be computed
-      ]
 
+      Better code coverage
     ],
-    grid.cell(colspan: 2, uncover(8)[
+    grid.cell(colspan: 2, uncover(2)[
       #text(size: 30pt)[Can we combine both?]
     ]),
   )
 ]
 
-#slide[
+#counter("logical-slide").update( n => n - 1 )
+#slide(
+  title: [Problem Statement 3],
+)[
   #highlight-block(pb3-text)
 ]
 
-#slide[
+#slide(
-  #highlight-block(pb1-text)
+  foreground: rotate(30deg, smallcaps(text(fill: pirat-color.red, size: 50pt)[Faire un dessin]))
-
+)[
-  
+  // TODO Outline / problematics / drawing
-
-  #highlight-block(pb2-text)
-
-
-
-  #highlight-block(pb3-text)
 ]
 
 #new-section-slide([Tool Reusability])
 
+#slide(
+  title: [State of the Art],
+)[
+  #set list(spacing: 0.5em)
+  Li #etal:
+  #v(0pt)
+  #item-by-item[
+    - Systematic literature review for Android static analysis
+    - Lists open-sourced tools
+    - Does not test the tools
+  ]
+  #uncover("4-")[Reaves #etal:]
+  #v(0pt)
+  #item-by-item(start: 4)[
+    - Tests 7 Android analysis tools
+    - Tests analysing 16 real-world applications
+    - Raises concerns about reusability and analysis of real-world applications
+  ]
+]
+
 #slide(
   title: [Methodology]
 )[
@@ -398,8 +454,6 @@
   #set align(center+horizon)
   #show figure.caption: none
   #scale(100%, get_figure(<fig:rasta-exit>))
-
-  //#text(size: 25pt)[We check if the results *exist* after running a tool]
 ]
 
 #counter("logical-slide").update( n => n - 1 )
@@ -445,6 +499,7 @@
   #scale(100%, get_figure(<fig:rasta-exit>))
 ]
 
+/*
 #counter("logical-slide").update( n => n - 1 )
 #slide(
   title: [Results],
@@ -505,34 +560,22 @@
 
   #text(size: 22pt)[Finishing rate as a function of the bytecode size, for APKs discovered in 2022]
 ]
+*/
 
 #slide(
   title: [Conclusion],
-  foreground: {
-    place(
-      bottom + left,
-      text(fill: pirat-color.blue)[International Conference on Software and Systems Reuse (ICSR 2024)]
-    )
-  }
 )[
-  #set align(center)
+  #v(1fr)
+  //#set align(center)
   #item-by-item[
-    - Over 22 tools, 10 are usable (*less than half*)
+    - Over 22 tools, 10 are usable
     - Newer applications are harder to analyse
     - Applications with more bytecode are harder to analyse
     - Applications targetting more recent versions of Android are harder to analyse
   ]
-]
+  #v(1fr)
-
+  #align(center, text(fill: pirat-color.blue.darken(30%))[International Conference on Software and Systems Reuse (ICSR 2024)])
-#slide[
+  #v(1em)
-  #set align(center)
-  // Sous titre dans la conclusion
-  #text(size: 22pt)[21st International Conference on Software and Systems Reuse (ICSR 2024)]
-
-  #v(2em)
-
-  #show regex("\[\d+\]"): none
-  #cite(<rasta>, form: "full")
 ]
 
 #new-section-slide([Class Shadowing])
@@ -579,35 +622,107 @@
 ]
 
 #slide(
-  title: [Android Ecosystem]
+  title: [State of the Art],
+  //foreground: rotate(30deg, text(fill: pirat-color.red, size: 50pt)[State of the Art])
 )[
-  #set align(center+horizon)
+  #set list(spacing: 3em)
-  #show figure.caption: none
+  #item-by-item[
-  #grid(
+    - Previous contributions focus on Java runtime
-    columns: (3fr, 1fr),
+    - Android related contributions focus on Dynamic Code Loading
-    scale(reflow: true, get_figure(<fig:cl-archisdk>)),
+  ]
-    [
-      #set align(left)
-      #set text(size: 20pt)
-      #set list(marker: [-])
-
-      === Types of classes:
-
-      - APK Classes
-      - Platform Classes
-        - SDK Classes
-        - Hidden APIs
-    ]
-  )
-  // TODO: hightlight
 ]
 
+#for i in range(5) {
+  let strong-at(i, str-idxs, body) = {
+    if i in str-idxs {
+      strong(body)
+    } else {
+      body
+    }
+  }
+  slide(
+    title: [Android Ecosystem],
+    foreground: {
+      let c = white.transparentize(10%)
+      let place-rect(x, y, w, h) = place-fg(
+        x: x, y: y,
+        rect(
+          width: w, 
+          height: h,
+          stroke: c,
+          fill: c,
+        )
+      )
+      // phone
+      if i in () {
+        place-rect(15%, 15%, 16.5%, 55%)
+      }
+      // Platform Classes
+      if i in (1,) {
+        place-rect(18%, 38%+4pt, 12%, 15%)
+        place-rect(21%, 54%, 8%, 5%)
+      }
+      // API access
+      if i in (1,4) {
+        place-rect(26%-4pt, 31%+2.3pt, 5%, 7%+2pt)
+      }
+      // APK file
+      if i in (2,3, 4) {
+        place-rect(19%+3pt, 22%, 9%, 9%+1pt)
+        place-rect(21%+5pt, 32%, 4%, 3%)
+      }
+      // doc
+      if i in (1,2,4) {
+        place-rect(31.5%, 45%, 30%, 25%)
+      }
+      // dev
+      if i in (2,4) {
+        place-rect(39.5%, 15%, 22%, 30%)
+      }
+      // Dev SDK
+      if i in (1,) {
+        place-rect(49.6%, 18%, 10%, 15%)
+      }
+      // Dev classes
+      if i in (3,) {
+        place-rect(41.5%-1pt, 18%, 8%+2pt, 10%)
+      }
+      // compil
+      if i in (2,3, 4) {
+        place-rect(31.5%, 22%, 8%, 5%)
+      }
+    }
+  )[
+    #set align(center+horizon)
+    #show figure.caption: none
+    #grid(
+      columns: (3fr, 1fr),
+      scale(reflow: true, get_figure(<fig:cl-archisdk>)),
+      [
+        #set align(left)
+        #set text(size: 20pt)
+        #set list(marker: [-])
+  
+        === Types of classes:
+  
+        - #strong-at(i, (1,))[APK Classes]
+        - #strong-at(i, (2,))[Platform Classes]
+          - #strong-at(i, (3,))[SDK Classes]
+          - #strong-at(i, (4,))[Hidden APIs]
+      ]
+    )
+  ]
+}
+
 #slide(
-  title: [Android ClassLoaders]
+  title: [Android ClassLoaders], // TODO CHANGE DRAWING
+  foreground: rotate(30deg, text(fill: pirat-color.red, size: 50pt)[DESSIN RUNTIME CL \ \ WITH DELEGATION])
 )[
+  /*
   #set align(center+horizon)
   #show figure.caption: none
   #scale(60%, reflow: true, get_figure(<fig:cl-class_loading_classes>))
+  */
 ]
 
 #slide(
@@ -704,6 +819,9 @@
   
         === `app.apk`
         #line(length: 30%)
+        #show "classes.dex": set text(fill: pirat-color.red.darken(10%))
+        #show "classes2.dex": set text(fill: pirat-color.red.darken(10%))
+        #show "classes3.dex": set text(fill: pirat-color.red.darken(10%))
         ```
         AndroidManifest.xml
         resources.arsc
@@ -755,9 +873,7 @@
           else:
             return f"classes{index+1}.dex"
         ```)
-        // Donner example
         - `classes0.dex` ?
-        - `classes1.dex` ?
         - `classes02.dex` ?
         - `classes10.dex` ?
       ]
@@ -808,7 +924,7 @@
       columns: (1fr, 1fr),
       column-gutter: 2em,
       yes-codly[
-        #scale(60%, reflow: true,
+        #scale(55%, reflow: true,
         ```python
         def get_dex_name(index: int):
           if index == 0:
@@ -829,7 +945,9 @@
               return load_from_file(dex_file, class_name)
             else:
               raise ClassNotFoundError()
-        ```) // TODO: nomer And Cl Alg
+        ```)
+        #v(-1em)
+        #smallcaps(text(size: 15pt)[Android Class Loading Algorithm])
       ], [
         #set align(left)
         #set text(size: 18pt)
@@ -852,6 +970,8 @@
 
 #slide(
   title: [Impact on Tools],
+  // TODO: IF PR: Add REF
+  foreground: move(dx: 300pt, rotate(30deg, text(fill: pirat-color.red, size: 30pt)[We want PR!])),
 )[
   #set align(center+horizon)
   #show figure.caption: none
@@ -861,11 +981,10 @@
     show table: set align(center+horizon)
     it
   }
-  #show "not working": "attack not successfull"
+  #show "not working": "attack failed"
-  #show "working": "attack successfull"
+  #show "working": "attack sucessful"
-  #show "works": "successfull"
+  #show "works": "sucessful"
   #scale(100%, reflow: true, get_figure(<tab:cl-results>))
-  // TODO: IF PR: Add REF
 ]
 
 #slide(
@@ -887,33 +1006,67 @@
   if i != 0 { counter("logical-slide").update( n => n - 1 ) }
   slide(
     title: [In the Wild: 49 975 APKs],
-    foreground: eye-2(x: 8%, y: 67%, height: 70pt)
   )[
     #set align(center+horizon)
-    #show figure.caption: none
+    // TODO: Simplifier table, mettre nb apk dans titre
-    #show link.where(dest: <acr-sdk>): it => it.body
+    // enlever SDK et 1ere partie 100%
-    #set table(
+    //#scale(90%, reflow: true, get_figure(<tab:cl-shadow>))
+    #import "4_class_loader/X_var.typ": scan_50k, scan_only_shadow
+    #import "lib.typ": num
+    #let nb_col = 7
+    #scale(90%, reflow: true, table(
+      columns: nb_col,
+      stroke: none,
+      align: center+horizon,
       fill: (x, y) => {
         if (
-          i == 1 and (x, y) in ((1, 13), (2, 13), (4, 13), (8, 13))
+          i == 1 and (x, y) in ((1, 4), (2, 4), (4, 4), (6, 4))
         ) or (
-          i == 2 and (x, y) in ((1, 14), (2, 14))
+          i == 2 and (x, y) in ((1, 5), (2, 5))
         ) {
           highlight-color
         } else {
           none
         }
-      }
+      },
-    )
+      inset: (x: 0% + 7pt, y: 0% + 5pt),
-    // TODO: Simplifier table, mettre nb apk dans titre
+      table.hline(),
-    // enlever SDK et 1ere partie 100%
+      table.header(
-    #scale(90%, reflow: true, get_figure(<tab:cl-shadow>))
+        table.cell(colspan: nb_col, inset: 3pt)[],
+        table.cell(rowspan: 2, eye-2(x: 35pt, y: 30pt, height: 70pt)),
+        table.vline(end: 3),
+        table.vline(start: 4),
+        table.cell(colspan: 3)[*Number of apps*],
+        table.vline(end: 3),
+        table.vline(start: 4),
+        table.cell(colspan: 2)[*Nb Shadow Classes*],
+        table.vline(end: 3),
+        table.vline(start: 4),
+        table.cell(rowspan: 2)[*Identical Code*],
+  
+        [], [%], [% malware],
+        [Average], [Median],
+      ),
+      table.hline(),
+      table.cell(colspan: nb_col, inset: 3pt)[],
+  
+      ..scan_only_shadow.map(e => (
+        [*#e.method*],
+        num(e.nbapp), [#e.ratioapp%], [#e.ratiomal%],
+        num(e.avgshadow), num(e.median),
+        [#e.id%]
+      )).flatten(),
+  
+      table.cell(colspan: nb_col, inset: 3pt)[],
+      table.hline(),
+    ))
   ]
 }
 
 #slide(
   title: [Conclusion]
 )[
+  #v(1fr)
   #item-by-item[
     - We modeled the class loading algorithm
     - Static Analysis Tools did not
@@ -921,28 +1074,18 @@
     - Ambiguous cases exists in the wild
     - We did not find deliberate shadow attacks
   ]
+  #v(1fr)
+  #align(center, text(fill: pirat-color.blue.darken(30%))[Digital Threats: Research and Practice])
+  #v(0.5em)
 ]
 
-#slide[
-  #set align(center)
-  // Faire apparaitre a chaque étape 
-  #text(size: 22pt)[Digital Threats: Research and Practice])
-
-  #v(2em)
-
-  #show regex("\[\d+\]"): none
-  #cite(<classloaderinthemiddle>, form: "full")
-]
-
-
 #new-section-slide([The Application of Theseus])
 
+// TODO put everywhere Theseus Transformeur
+
 #slide(
   title: [Overview],
-  foreground: {
+  foreground: rotate(30deg, text(fill: pirat-color.red, size: 50pt)[Moche faire un dessin]),
-    set align(center+horizon)
-    rotate(30deg, text(fill: pirat-color.red, size: 30pt)[Moche faire un dessin])
-  }
 )[
   // TODO: bien tout rappeler l'objectif
   // TODO: SOA
@@ -986,7 +1129,7 @@
   if i != 0 { counter("logical-slide").update( n => n - 1 ) }
 
   slide(
-    title: [Reflection],
+    title: [Transformation: Reflection],
     //foreground: ghost-6(x: 80%, y: 15%, mirror: true)
   )[
     #show: yes-codly
@@ -1189,10 +1332,9 @@
   #set align(center+horizon)
   #show figure.caption: none
   #scale(90%, reflow: true, get_figure(<fig:th-status-npatched-vs-patched>))
-  // Fleche original 
+  // TODO: Fleche original 
-  // Fleche theseus
+  // TODO: Fleche theseus
   //
-  // Theseus Transformeur
 ]
 
 #slide(
@@ -1235,10 +1377,10 @@
 
 #counter("logical-slide").update( n => n - 1 )
 #slide(
-  title: [Futur Work]
+  title: [Future Works]
 )[
   #item-by-item[
-  - Benchmark to evaluate finishing rate
+  - Benchmark of APKs to evaluate finishing rate
   - Make tools reusing sources from Android Open Source Project
   - Require developpers to provide high coverage tests inputs with the APKs
   ]
@@ -1278,6 +1420,9 @@
 /*
 * RETOUR 1:
 *
+* Pas de retour en arriere
+* Ne pas se retourner
+*
 * Bon premier jet.
 *
 * - slide text bof
@@ -1295,15 +1440,8 @@
 * Plus d'état de l'art, dans chapitres? redonner contexte au debut des chapitre, en profiter pour l'état de l'art. Pas plus d'un ou deux papiers, si important.
 * Remplacer l'état de l'art dans l'intro par intuition et mettre soa dans chapitre
 * 
-* Pb Statement: lisibilité!
-*
 * PQ: focu on dcl & refl
 *
-* Obfuscation: fleche vers deobfuscation
-*
-* Intro, dessin pas a pas dans l'intro en fonction de ce qui se passe dans l'intro
 * RQ1: Static, RQ2: Check coherence static / dynamic, RQ3: transformation
 *
-* Mettre Theseus Tranformeur un peu partout!
-*
 */

slides/lib.typ

@@ -19,6 +19,8 @@ rgb("#E69426"),
 pirat-color.red,
 )
 
+#let etal = [_et al._]
+
 #let highlight-block(body) = {
   set text(fill: white)
   block(
@@ -73,22 +75,8 @@ pirat-color.red,
 }
 */
 
-#let ghost(
+#let place-fg(x: 0pt, y: 0pt, body) = context {
-  img, x: 0pt, 
+  let s = measure(body)
-  y: 0pt,
-  mirror: false,
-  rot: 0deg,
-  height: 100pt
-) = context {
-  let img = image(img, height: height)
-  if mirror {
-    img = scale(x: -100%, img)
-  }
-  if rot != 0deg {
-    img = rotate(rot, img)
-  }
-
-  let s = measure(img)
   let hx = s.width / 2
   let hy = s.height / 2
 
@@ -96,10 +84,27 @@ pirat-color.red,
     bottom + left,
     dx: x - hx,
     dy: -y + hy,
-    img
+    body
   )
 }
 
+#let ghost(
+  img, x: 0pt, 
+  y: 0pt,
+  mirror: false,
+  rot: 0deg,
+  height: 100pt
+) = {
+  let img = image(img, height: height)
+  if mirror {
+    img = scale(x: -100%, img)
+  }
+  if rot != 0deg {
+    img = rotate(rot, img)
+  }
+  place-fg(x: x, y: y, img)
+}
+
 #let ghost-1 = ghost.with("imgs/ghosts/ghost-1.png")
 #let ghost-2 = ghost.with("imgs/ghosts/ghost-2.png")
 #let ghost-3 = ghost.with("imgs/ghosts/ghost-3.png")
@@ -111,3 +116,30 @@ pirat-color.red,
 #let eye-2 = ghost.with("imgs/ghosts/eye-2.png")
 #let eye-3 = ghost.with("imgs/ghosts/eye-3.png")
 #let eye-4 = ghost.with("imgs/ghosts/eye-4.png")
+
+#let arrow(start, end, strk: 3pt + black) = {
+  let strk = stroke(strk)
+  start.at(1) = -start.at(1)
+  end.at(1) = -end.at(1)
+  let (xe, ye) = end
+  let (xs, ys) = start
+  let w = xe.pt() - xs.pt()
+  let h = ye.pt() - ys.pt()
+  let len = if w == 0pt and h == 0pt {
+    1pt
+  } else {
+    calc.sqrt(w*w + h*h)
+  }
+  let cos = w / len
+  let sin = h / len
+
+  place(bottom + left, line(start: start, end: end, stroke: strk))
+  place(bottom + left, polygon(
+    fill: strk.paint,
+    stroke: strk,
+    end,
+    (xe + strk.thickness * (sin - cos), ye - strk.thickness * (sin + cos )),
+    (xe - strk.thickness * (sin + cos), ye - strk.thickness * (sin - cos )),
+  ))
+}
+

slides/sns_polylux_template.typ

@@ -43,9 +43,8 @@ cmyk(25%,7%,0%,0%),
 
 // Data
 #let sns-polylux-template_title                 = state("title",       none)
-#let sns-polylux-template_short-title           = state("short-title", none)
 #let sns-polylux-template_subtitle              = state("subtitle",    none)
-#let sns-polylux-template_event                 = state("event",       none)
+#let sns-polylux-template_footer-text           = state("footer-text", none)
 #let sns-polylux-template_short-event           = state("short-event", none)
 #let sns-polylux-template_authors               = state("authors",     none)
 
@@ -77,8 +76,7 @@ cmyk(25%,7%,0%,0%),
   // Data
   title        : none,
   subtitle     : none,
-  short-title  : none,
+  footer-text  : none,
-  event        : none,
   short-event  : none,
   logo-2       : none,
   logo-1       : none,
@@ -115,11 +113,7 @@ cmyk(25%,7%,0%,0%),
   )
   sns-polylux-template_title.update(title)
   sns-polylux-template_subtitle.update(subtitle)
-  if short-title != none { sns-polylux-template_short-title.update(short-title) }
+  if footer-text != none { sns-polylux-template_footer-text.update(footer-text) }
-    else { sns-polylux-template_short-title.update(title) }
-  sns-polylux-template_event.update(event)
-  if short-event != none { sns-polylux-template_short-event.update(short-event) }
-    else { sns-polylux-template_short-event.update(event) }
   sns-polylux-template_logo-2.update(logo-2)
   sns-polylux-template_logo-1.update(logo-1)
   sns-polylux-template_authors.update(authors)
@@ -171,7 +165,7 @@ cmyk(25%,7%,0%,0%),
   let content = align(top + center, context( {
     let title       = sns-polylux-template_title.at(here())
     let subtitle    = sns-polylux-template_subtitle.at(here())
-    let event       = sns-polylux-template_event.at(here())
+    let footer-text = sns-polylux-template_footer-text.at(here())
     let authors     = sns-polylux-template_authors.at(here())
     let title-size  = sns-polylux-template_title-size.at(here())
     let logo        = {
@@ -224,7 +218,7 @@ cmyk(25%,7%,0%,0%),
     place(
       bottom + center,
       dy: -1cm,
-      text(fill: sns-polylux-template_background-color.at(here()), size: 22pt, event)
+      text(fill: sns-polylux-template_background-color.at(here()), size: 22pt, footer-text)
     )
     if logo != none {
       place(
@@ -454,8 +448,7 @@ cmyk(25%,7%,0%,0%),
 
   // FOOTER
   let footer = align(top + center, context( {
-    let short-title = sns-polylux-template_short-title.at(here())
+    let footer-text = sns-polylux-template_footer-text.at(here())
-    let short-event = sns-polylux-template_short-event.at(here())
 
     place(top + center, line(length: 100%-2cm, stroke: (paint: sns-polylux-template_colormap.at(here()).at(1), thickness: 2pt)))
 
@@ -468,9 +461,8 @@ cmyk(25%,7%,0%,0%),
       align(horizon,text(fill: sns-polylux-template_colormap.at(here()).at(2), size: 16pt,
       grid(
         gutter: 0.8cm,
-        columns: (0.7fr, 1fr, 0.7fr),
+        columns: (1fr, 5em),
-        align(left, short-title),
+        align(center, smallcaps(footer-text)),
-        align(center, smallcaps(short-event)),
         align(right, if page-number [#toolbox.slide-number/#toolbox.last-slide-number]),
       ))
     ))