Reverse Engineering IDA Pro

Linux 遇到兩個Binary 檔案，想要比較看看有什麼不一樣，要怎麼做呢？ Linux 如何做Binary 檔案的Diff. 最基本想要知道有沒有不同，只要做diff 即可。

Short answer: you can't. Long answer: write your own diff that can ignore one or either of the operands of the opcodes if they are a numerical immediate value.

The standard unix diff will show if the files are the same or not: [me@host ~]$ diff 1.bin 2.bin Binary files 1.bin and 2.bin differ.

cmp is designed to find differences in binary files. You might also try checksumming ( sum ) and compare the hashes.

I need to compare two binary files and get the output in the form <fileoffset-hex> <file1-byte-hex> <file2-byte-hex> for every different byte.

Calculating and storing a diff of the abc and abc2 files can be done with rsync. This is an example with abc and abc2 being 153 MB.

To compare subdirectories and any files they may contain as well, use diff -r. Combine it with -q to suppress the output for text files.

In this article, we'll talk about different ways to compare binary files in Linux. We may need this when investigating different files for data recovery.

In operating systems that distinguish between text and binary files, diff normally reads and writes all data as text. Use the --binary option to force diff to ...

The diff command will compare two files for you, and highlight the differences. It can even provide a few lines on either side of the changes to provide some ... Comparing Binary Files · Secure Hash Algorithms · Finding the Differences