Using sed to Download ComboFix automatically
- by user901398
I'm trying to write a shell script to grab the dynamic URL which ComboFix is located at at BleepingComputer.com/download/combofix
However, for some reason I can't seem to get my regex to match the download link of the "click here" if the download doesn't work. I used a regex tester and it said I matched the link, but I can't seem to get it to work when I execute it, it turns up an empty result. Here's my entire script:
#!/bin/bash
# Download latest ComboFix from BleepingComputer
wget -O Listing.html "http://www.bleepingcomputer.com/download/combofix/" -nv
downloadpage=$(sed -ne 's@^.*<a href="\(http://www[.]bleepingcomputer[.]com/download/combofix/dl/[0-9]\+/\)" class="goodurl">.*$@\1@p' Listing.html)
echo "DL Page: $downloadpage"
secondpage="$downloadpage"
wget -O Download.html $secondpage -nv
file=$(sed -ne 's@^.*<a href="\(http://download[.]bleepingcomputer[.]com/dl/[0-9A-Fa-f]\+/[0-9A-Fa-f]\+/windows/security/anti[-]virus/c/combofix/ComboFix[.]exe\)">.*$@\1@p' Download.html)
echo "File: $file"
wget -O "ComboFix.exe" "$file" -nv
rm Listing.html
rm Download.html
mkdir Tools
mv "ComboFix.exe" "Tools/ComboFix.exe" -f
The first two downloads work successfully, and I end up with:
http://www.bleepingcomputer.com/download/combofix/dl/12/
But it fails to match the final sed that will give me the download link.
The code it's supposed to match is:
<a href="http://download.bleepingcomputer.com/dl/6c497ccbaff8226ec84c97dcdfc3ce9a/5058d931/windows/security/anti-virus/c/combofix/ComboFix.exe">click here</a>
