From 238eb8617eb3456a27075ffb5a512a60afc002f2 Mon Sep 17 00:00:00 2001
From: Paul Makles <paulmakles@gmail.com>
Date: Sun, 13 Oct 2019 20:31:09 +0100
Subject: [PATCH] Extra obfuscation
---
j.c | 21 +++++++++++++++------
1 file changed, 15 insertions(+), 6 deletions(-)
diff --git a/j.c b/j.c
index 8ff9b5d..19b9dff 100644
--- a/j.c
+++ b/j.c
@@ -2,31 +2,40 @@
#include <stdio.h>
#include <string.h>
-void deny() {
+void deny(unsigned int r, unsigned int l) {
printf("Access denied!\n");
}
-void victory() {
+void victory(unsigned int r, unsigned int l) {
char alpha[36] = "abcdefghijklmnopqrstuvwxyz0123456789";
int target[11] = {
26, 20, 19, 26, 5, 1, 26, 20, 13, 3, 18
};
printf("Flag: ");
- for (int i=0;i<11;i++)
- printf("%c", alpha[target[i]]);
+ for (int i=0;i<11;i++) {
+ if (((unsigned long) *victory) >> 32 == l) {
+ if ((unsigned int) *victory == r) {
+ printf("%c", alpha[target[i]]);
+ } else {
+ printf("%c", alpha[target[i] - 1] + 5);
+ }
+ } else {
+ printf("%c", alpha[target[i] + 1] - 5);
+ }
+ }
printf("\n");
}
int main() {
char name[4];
- void (*ptr)() = *deny;
+ void (*ptr)(unsigned int r, unsigned int l) = *deny;
printf("I heard you should be at 0x%lx\n", (unsigned long) *victory);
printf("Enter the secret code [4 chars]: ");
gets(name);
- (*ptr)();
+ (*ptr)(*ptr, ((unsigned long) *ptr) >> 32);
return 0;
}
\ No newline at end of file
--
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