Nightwolf Corruptor

A command-line tool for corrupting files.

Argument list

• -file <file name> - Set the input file name (required)
• -output <file name> - Set the output file name (default: 'outfile<random number>')
• -start <unsigned number> - Set the start byte (default: 0)
• -end <unsigned number> - Set the end byte (default: last byte)
• -every <positive number> - Corrupt every <number> bytes (default: 1)
• -seed <unsigned number> - Set the random seed (default: 0 - automatic seed)
• -redirect <file name> - redirect output to a file

Corruption types

🔷 NOTE: Only one of them is executed at once!

• -add <number> - add the number to every corrupted byte (negative numbers subtract)
• -shift <number> - Shift corrupted byte by <number> bytes forward (negative numbers shift backwards)
• -replace <byte 1> <byte 2> - Replace byte 1* with byte 2* in corrupted bytes
• -random <byte 1> <byte 2> - Randomize corrupted bytes in a byte 1 to byte 2 range

Unsigned number, number and byte can be written as a hexadecimal number (prepend it with 0x) or as an octal number (prepend it with 0), otherwise the numbers are decimal. In -every and -seed arguments the numbers are always decimal.

* byte 1 and byte 2 are numbers between 0 and 255

Compilation

Compiling is simple as NWC only has 2 .cpp files and 1 header file, but here are lines of code that you can paste to your terminal/cmd.exe to compile this program. The code should compile with C++11 standard, but C++14 or newer is recommended.

Windows (MinGW)

g++ -Wall -std=c++14 -static -O2 -s -o nwc.exe main.cpp nwc.cpp

Linux (GCC/Clang)

g++ -Wall -std=c++14 -O2 -s -o nwc main.cpp nwc.cpp