> For the complete documentation index, see [llms.txt](https://alham-rizvi.gitbook.io/alhamrizvi/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://alham-rizvi.gitbook.io/alhamrizvi/picoctf-writeups/picoctf/forensics/binary/binary_digits.md). # binary\_digits for recon, i did image after converting from binary to hex, the first few bits looks suspicious The Magic Number The hexadecimal signature for a JPEG is: FF D8 FF E0 Sometimes, depending on the specific type of JPEG (like a digital camera's EXIF file), the fourth byte might change, but it must start with FF D8. i fixed that, image image $ python3 -c "python3 -c "with open('digits.bin','r') as f: data=f.read().strip(); print('Length:', len(data)); n=int(data, 2); open('out.jpg', 'wb').write(n.to\_bytes((len(data)+7)//8, 'big'))" Length: 71200 image