From b12ea87c1384a6a707600d177c0a6b81aaa3c65c Mon Sep 17 00:00:00 2001
From: ryuzakighost <ryuzakighost@gmail.com>
Date: Fri, 12 Oct 2018 22:39:46 +1100
Subject: [PATCH] attempt 3
---
fuzzer/Fuzzer.java | 8 ++++++--
src/machine-vuln1.c | 5 +++--
2 files changed, 9 insertions(+), 4 deletions(-)
diff --git a/fuzzer/Fuzzer.java b/fuzzer/Fuzzer.java
index caa553f..122a42c 100644
--- a/fuzzer/Fuzzer.java
+++ b/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){
diff --git a/src/machine-vuln1.c b/src/machine-vuln1.c
index 6b69dbf..fd7f256 100644
--- a/src/machine-vuln1.c
+++ b/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)){
--
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