attempt 3

fuzzer/Fuzzer.java

@@ -21,7 +21,11 @@ public class Fuzzer {
             /* We just print one instruction.
                Hint: you might want to make use of the instruction
                grammar which is effectively encoded in Instruction.java */
-            pw.println("ADD R0 R1 R2");
+            pw.println("MOV R26 77");
+            for(Int x;x<70000;x++){
+                pw.println("RET R26");
+            }
+            /*pw.println("ADD R0 R1 R2");
             pw.println("ADD R3 R4 R5");
             pw.println("ADD R6 R7 R8");
             pw.println("ADD R9 R10 R11");
@@ -34,7 +38,7 @@ public class Fuzzer {
             pw.println("ADD R24 R18 R21");
             pw.println("ADD R25 R22 R23");
             pw.println("ADD R26 R24 R25");
-            pw.println("RET R26");
+            pw.println("RET R26");*/
          
             
         }catch (Exception e){

src/machine-vuln1.c

@@ -60,7 +60,7 @@ static void machine_init(void){
 
   /* memset can be vulnerable - changes to this can result in dirty memory to be read*/
   memset(memory,0,sizeof(int32_t)*MEMORY_SIZE);
-  memset(regs,0,sizeof(int32_t)); //*NUM_REGS
+  memset(regs,0,sizeof(int32_t)*NUM_REGS); 
   count = 0;
 }
 
@@ -438,7 +438,8 @@ static int read_program(const char *filename){
   memset(program,0,sizeof(program));
 
   int instructionCount = 0;
-  while (instructionCount < MAX_INSTRUCTIONS){
+  while (instructionCount < 2*MAX_INSTRUCTIONS){
+    /*VULN*/
     char * res = fgets(program[instructionCount],MAX_LINE_LENGTH+2,f);
     if (res == NULL){
       if (feof(f)){