https://github.com/youben11/silvio-text-infect

Implementation of Silvio Cesare text infection technic
https://github.com/youben11/silvio-text-infect

c elf virus

Last synced: 28 days ago
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Implementation of Silvio Cesare text infection technic

• Host: GitHub
• URL: https://github.com/youben11/silvio-text-infect
• Owner: youben11
• License: gpl-3.0
• Created: 2018-01-05T10:44:14.000Z (almost 7 years ago)
• Default Branch: master
• Last Pushed: 2018-01-05T20:16:55.000Z (almost 7 years ago)
• Last Synced: 2024-10-06T02:25:13.207Z (about 1 month ago)
• Topics: c, elf, virus
• Language: C
• Size: 17.6 KB
• Stars: 10
• Watchers: 3
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Silvio Text Infectction Technic

Implementation of Silvio Cesare text infection technic.

Current implementation is for infecting ELF64 files.

# Important

You should not use it for creating small viruses but only to know how this technic works.

# Algorithm

1- Increase the section header offset by PAGE_SIZE in the ELF file header.

2- Locate the text segment program header:

  - Modify the entry point to the parasite location.

  - Increase file size and memory size in the text segment program header by the size of the parasite.

  

3- For each program header whose segment is after the parasite, increase it's offset by PAGE_SIZE.

4- Find the last section header in the text segment and increase it's size by the length of the parasite.

5- For every section header that exists after the parasite insertion, increase it's offset by PAGE_SIZE.

6- Insert the parasite code into the text segment.