Info

ReverseBox is a Python package with a set of functions useful in software reverse engineering.

Why ReverseBox?
It's designed to help with:

1. Decompressing / compressing data
2. Decrypting / encrypting data
3. Tedious reverse engineering tasks e.g. testing different checksum algorithms to find the one that was used in the software or file format
4. Figuring out file formats
5. Parsing data structures
6. Wrapping functions for input/output operations
7. Searching for raw images

Who should use ReverseBox?
Mostly developers and reverse engineers (e.g. file format researchers or software researchers).

List of functionalities

• Checksum

  • Adler32 ✔️
  • Fletcher16 ✔️
  • Fletcher32 ✔️
  • Internet Checksum / IPv4 header checksum ✔️
  • Sum8 ✔️
  • Sum8 2s Complement ✔️
  • Unix Sum BSD16 ✔️
  • Unix Sum SYSV ✔️
  • Xor8 ✔️

• CRC

  • CRC-8 ✔️
  • CRC-8/CDMA2000 ✔️
  • CRC-8/DARC ✔️ (wrapper only)
  • CRC-16 (ARC) ✔️
  • CRC-16 (Modbus) ✔️
  • CRC-16 (Sick) ✔️
  • CRC-16 (DNP) ✔️
  • CRC-16 (EA CRCF) ✔️
  • CRC-16-CCITT (XModem) ✔️
  • CRC-16-CCITT (0xFFFF) ✔️
  • CRC-16-CCITT (0x1D0F) ✔️
  • CRC-16-CCITT (Kermit) ✔️
  • CRC-32/CKSUM (Unix cksum) ✔️
  • CRC-32 (ISO/HDLC) ✔️
  • CRC-32 (Asobo) ✔️
  • CRC-64 (Asobo) ✔️
  • CRC-64/GO-ISO ✔️ (wrapper only)

• Compression

  • Asobo (TODO) ❌
  • BZE/BZZ (TODO) ❌
  • BZIP2 (TODO) ❌
  • GZIP (TODO) ❌
  • JCALG1 (TODO) ❌
  • LZMA (TODO) ❌
  • LZO / LZO1X ✔️ (wrapper only)
  • LZSS (TODO) ❌
  • MIO0 ✔️
  • NitroSDK (TODO) ❌
  • Oodle (TODO) ❌
  • Refpack (EA Games) ✔️ (wrapper only)
  • RNC (TODO) ❌
  • ZLIB ✔️ (wrapper only)

• Encryption

  • AES (TODO) ❌
  • DES (TODO) ❌
  • Lucifer / DTD-1 (TODO) ❌
  • ROT13 ✔️
  • XOR Cipher (Basic) ✔️
  • XOR Cipher (Basic) Guesser ✔️
  • (game-specific) XOR Cipher (Retro64 ECO) ✔️
  • (game-specific) XOR Cipher (Giana’s Return ZDA) ✔️

• Hash

  • AP ✔️
  • DJB2 ✔️
  • FNV0-32 ✔️
  • FNV0-64 ✔️
  • FNV1-32 ✔️
  • FNV1-64 ✔️
  • FNV1A-32 ✔️
  • FNV1A-64 ✔️
  • SDBM ✔️
  • SHA-1 ✔️ (wrapper only)
  • SHA-2 (256 bits) ✔️ (wrapper only)
  • MD2 ✔️ (wrapper only)
  • MD5 ✔️ (wrapper only)
  • (game-specific) Hercules (TODO) ❌
  • (game-specific) E-racer (TODO) ❌

• Image

  • Decode RGB121 ✔️
  • Decode RGB121_BYTE ✔️
  • Decode RGBA2222 ✔️
  • Decode RGBX2222 ✔️
  • Decode GRAY8 ✔️
  • Decode RGBX332 (RGB8) ✔️
  • Decode BGRX332 (BGR8) ✔️
  • Decode/Encode RGB565 ✔️
  • Decode/Encode BGR565 ✔️
  • Decode RGBX5551 ✔️
  • Decode RGBA5551 ✔️
  • Decode RGB888 (RGB24) ✔️
  • Decode BGR888 (BGR24) ✔️
  • Decode ARGB4444 ✔️
  • Decode RGBA4444 ✔️
  • Decode ABGR4444 ✔️
  • Decode XBGR4444 ✔️
  • Decode RGBX4444 ✔️
  • Decode BGRA4444 ✔️
  • Decode BGRX4444 ✔️
  • Decode XRGB1555 ✔️
  • Decode ARGB1555 ✔️
  • Decode ABGR1555 ✔️
  • Decode XBGR1555 ✔️
  • Decode ARGB8888 ✔️
  • Decode ABGR8888 ✔️
  • Decode/Encode RGBA8888 ✔️
  • Decode/Encode BGRA8888 ✔️
  • Decode RGB48 ✔️
  • Decode BGR48 ✔️
  • Decode PAL4_RGBX5551 ✔️
  • Decode PAL4_BGRX5551 ✔️
  • Decode PAL4_XRGB1555 ✔️
  • Decode PAL4_XBGR1555 ✔️
  • Decode PAL4_RGB888 ✔️
  • Decode PAL4_BGR888 ✔️
  • Decode PAL4_IA8 ✔️
  • Decode PAL4_RGB565 ✔️
  • Decode PAL4_RGB5A3 ✔️
  • Decode PAL4_RGBA8888 ✔️
  • Decode PAL4_BGRA8888 ✔️
  • Decode PAL4_RGB5A3 ✔️
  • Decode PAL8_RGBX2222 ✔️
  • Decode PAL8_RGBX5551 ✔️
  • Decode PAL8_BGRX5551 ✔️
  • Decode PAL8_XRGB1555 ✔️
  • Decode PAL8_XBGR1555 ✔️
  • Decode PAL8_RGB888 ✔️
  • Decode PAL8_BGR888 ✔️
  • Decode PAL8_RGBX6666 ✔️
  • Decode PAL8_IA8 ✔️
  • Decode PAL8_RGB565 ✔️
  • Decode PAL8_RGB5A3 ✔️
  • Decode PAL8_RGBA8888 ✔️
  • Decode PAL8_BGRA8888 ✔️
  • Decode PAL16_IA8 ✔️
  • Decode PAL16_RGB565 ✔️
  • Decode PAL16_RGB5A3 ✔️
  • Decode N64_RGB5A3 ✔️
  • Decode N64_I4 ✔️
  • Decode N64_I8 ✔️
  • Decode N64_IA4 ✔️
  • Decode N64_IA8 ✔️
  • Decode N64_RGBA32 ✔️
  • Decode N64_CMPR ✔️
  • Decode BC1/DXT1 ✔️
  • Decode BC2/DXT3 ✔️
  • Decode BC3/DXT5 ✔️
  • Decode BC4 ✔️
  • Decode BC5 ✔️
  • Decode BC6 ✔️
  • Decode BC7 ✔️
  • Decode GST121 ✔️
  • Decode GST221 ✔️
  • Decode GST421 ✔️
  • Decode GST821 ✔️
  • Decode GST122 ✔️
  • Decode GST222 ✔️
  • Decode GST422 ✔️
  • Decode GST822 ✔️
  • Decode YUY2 ✔️
  • Decode NV12 ✔️
  • Decode NV21 ✔️
  • Decode UYVY ✔️
  • Decode YUV444P ✔️
  • Decode YUV410P ✔️
  • Decode YUV420P ✔️
  • Decode YUV422P ✔️
  • Decode YUV411P ✔️
  • Decode UYYVYY411 ✔️
  • Decode YUV440P ✔️
  • Decode YUVA420P ✔️
  • Decode AYUV ✔️
  • Decode GRAY8A (LA88) ✔️
  • Decode GRAY16 ✔️
  • Decode XRGB8888 ✔️
  • Decode RGBX8888 ✔️
  • Decode XBGR8888 ✔️
  • Decode BGRX8888 ✔️
  • Decode R8 ✔️
  • Decode G8 ✔️
  • Decode B8 ✔️
  • Decode R16 ✔️
  • Decode G16 ✔️
  • Decode B16 ✔️
  • Decode R32 ✔️
  • Decode G32 ✔️
  • Decode B32 ✔️
  • Decode BUMPMAP_SR ✔️
  • 3DS Swizzling/Twiddling ✔️
  • CMPR Swizzling/Twiddling ✔️
  • PS2 Swizzling/Twiddling ✔️
  • PS2 Palette Swizzling/Twiddling ✔️
  • PS4 Swizzling/Twiddling ✔️
  • PSP Swizzling/Twiddling ✔️
  • PS Vita Swizzling/Twiddling ✔️
  • XBOX 360 Swizzling/Twiddling ✔️
  • GameCube/WII Swizzling/Twiddling ✔️
  • Switch Swizzling/Twiddling ✔️
  • XBOX/PS3 Swizzling/Twiddling (Morton Order) ✔️
  • Dreamcast Swizzling/Twiddling (Morton Order) ✔️
  • BC Swizzling/Twiddling ✔️
  • PS2 GS Texture Swizzling/Twiddling ✔️
  • PS2 GS Texture Compression ✔️
  • RLE TGA compression ✔️

• IO

  • File Reader ✔️
  • File Writer ✔️
  • Bytes Handler ✔️
  • Translation Text Handler ✔️
  • Mod Handler ✔️
  • File extension checking ✔️
  • Padding calculation ✔️
  • File size checking ✔️

Checksum calculation - example

// CRC32 calculation

from reversebox.crc import crc32_iso_hdlc
from reversebox.common import common

test_data = b'123456789'
crc32_handler = crc32_iso_hdlc.CRC32Handler()
crc32 = crc32_handler.calculate_crc32(test_data)
print("CRC32_INT: ", crc32)
print("CRC32_STR: ", common.convert_int_to_hex_string(crc32))

// CRC32 output

CRC32_INT:  3421780262
CRC32_STR:  0xCBF43926

XOR encryption - example

// XOR Cipher (Basic)

from reversebox.encryption.encryption_xor_basic import xor_cipher_basic


test_data = b'abcd'
test_key = b'\x3D'
xor_result = xor_cipher_basic(test_data, test_key)
print(xor_result)

// XOR Cipher output

b'\\_^Y'

File Handler - example

// File reading

import os
from reversebox.io_files.file_handler import FileHandler


file_path = os.path.join(os.path.dirname(__file__), "file.bin")
file_reader = FileHandler(file_path, "rb")
file_reader.open()
value = file_reader.read_str(4, "utf8")
print(value)

// File Reader Output

ABCD

Hash calculation - example

// SHA-1 calculation

from reversebox.hash.hash_sha1 import SHA1Handler

test_data = b'abcd'
sha1_handler = SHA1Handler()
sha1 = sha1_handler.calculate_sha1_hash(test_data)
print("SHA-1 hash: ", sha1)

// SHA-1 Output

SHA-1 hash:  b'\x81\xfe\x8b\xfe\x87Wl>\xcb"Bo\x8eW\x84s\x82\x91z\xcf'

Image decoding - example

// DXT1 compressed image decoding

from reversebox.image.image_decoder import ImageDecoder
from reversebox.image.image_formats import ImageFormats
from reversebox.image.pillow_wrapper import PillowWrapper


def show_img():
    with open("image_data.bin", "rb") as f:
        image_data = f.read()

    img_width: int = 64
    img_height: int = 64
    decoder = ImageDecoder()
    wrapper = PillowWrapper()
    converted_data: bytes = decoder.decode_compressed_image(image_data, img_width, img_height, ImageFormats.DXT1)
    pil_image = wrapper.get_pillow_image_from_rgba8888_data(converted_data, img_width, img_height)
    pil_image.show()


if __name__ == '__main__':
    show_img()

More Examples

Need more examples?
Check out list of tools written using ReverseBox:

• Giana's Return ZDA Tool
• ObsCure 2 HVP Extractor
• Tail Concerto Translation Tools
• EA Graphics Manager
• Acclaim TRE Tool
• F-Zero X TEX Tool
• TPL Parser
• ImageHeat
• and more...

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