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download latest 2gis db for ur city

  • from web site
  • or use u local db (path/to/2gis/3.0/Data_Novosibirsk.dgdat)

for decrypt the file, use bitwise Exclusive OR operation (xor)

[file] ^ 0xC5 // pattern 11000101
  1. open u .dgdat file in hexeditor
  2. xor file by pattern 11000101
  3. save as (file.dump)

after decrypt use a regular expression to get mail addresses

$ grep -E -o -a "[a-zA-Z0-9._-]+@[a-zA-Z0-9-]+\.(ru|ua|aero|arpa|asia|biz|cat|com|coop|edu|gov|info|int|jobs|mil|mobi|museum|name|net|org|pro|tel|travel)" file.dump > emails.txt

enjoy

$ wc -l emails.txt
34864 emails.txt # (>^_^)> Prank Gone Right

hex editors for linux

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