From b1a33432e98bcebc9b8af3a910d01eb2aa444431 Mon Sep 17 00:00:00 2001
From: Andrea Cardaci <cyrus.and@gmail.com>
Date: Tue, 13 Jul 2021 08:50:51 +0200
Subject: [PATCH] Simplify cmp

---
 _gtfobins/cmp.md | 19 +++++++------------
 1 file changed, 7 insertions(+), 12 deletions(-)

diff --git a/_gtfobins/cmp.md b/_gtfobins/cmp.md
index 15b86ec..97414c0 100644
--- a/_gtfobins/cmp.md
+++ b/_gtfobins/cmp.md
@@ -1,21 +1,16 @@
 ---
+description: Dump the bytes of the input file that are different from the NUL byte in a tabular format, hence this may not be suitable to read arbitrary binary files.
 functions:
   file-read:
     - code: |
-        LFILE=file-to-read
-        TEMP=$(mktemp)
-        printf 'A%.0s' {1..999} > $TEMP
-        cmp $LFILE $TEMP -b -n 999 -l
+        LFILE=file_to_read
+        cmp $LFILE /dev/zero -b -l
   suid:
     - code: |
-        LFILE=file-to-read
-        TEMP=$(mktemp)
-        printf 'a%.0s' {1..999} > $TEMP
-        cmp $LFILE $TEMP -b -n 999 -l
+        LFILE=file_to_read
+        ./cmp $LFILE /dev/zero -b -l
   sudo:
     - code: |
-        LFILE=file-to-read
-        TEMP=$(mktemp)
-        printf 'a%.0s' {1..999} > $TEMP
-        sudo cmp $LFILE $TEMP -b -n 999 -l
+        LFILE=file_to_read
+        sudo cmp $LFILE /dev/zero -b -l
 ---