DISARM THE B.O.M.B.!
bash, vim and dc (343)
I'm sitting at a bash prompt which has been configured by the Evil Genius, and of course he has VISUAL=vim in the default environment. Using the default bash binding for edit-and-execute-command (C-x C-e) bash invokes $VISUAL and will execute its buffer contents on exit (ZZ). I type in the following sequence (Note: kbd-mode are commands issued in normal mode and control sequences):

C-xC-e

acat&lt;&lt;&lt;45C-c4C-aaa
Now the vim buffer contains cat&lt;&lt;&lt;49a. Continuing ...

45C-c3C-aaa

54C-c41C-aaa

55C-c13C-aaa
Now the vim buffer contains cat&lt;&lt;&lt;49a48a95a68a. Continuing ...

51C-c31C-aaa

55C-c24C-aaa

44C-c43C-aaa

42C-c41C-aaa

42C-c41C-aaa

54C-c11C-aaa

55C-c25C-aaa&gt;s
Now the vim buffer contains cat&lt;&lt;&lt;49a48a95a68a82a79a87a83a83a65a80a&gt;s
Get out of insert mode, save and exit

C-cZZ
The s file now contains a dc script that generates the desired string on the stack, now we need to add print commands.

C-xC-eadc&lt;&lt;&lt;55C-c25C-aaa&gt;&gt;sC-cZZ
Repeat the above command 9 times.

C-xC-eadc&lt;&lt;&lt;55C-c25C-aaa&gt;&gt;sC-cZZ

C-xC-eadc&lt;&lt;&lt;55C-c25C-aaa&gt;&gt;sC-cZZ

C-xC-eadc&lt;&lt;&lt;55C-c25C-aaa&gt;&gt;sC-cZZ

C-xC-eadc&lt;&lt;&lt;55C-c25C-aaa&gt;&gt;sC-cZZ

C-xC-eadc&lt;&lt;&lt;55C-c25C-aaa&gt;&gt;sC-cZZ

C-xC-eadc&lt;&lt;&lt;55C-c25C-aaa&gt;&gt;sC-cZZ

C-xC-eadc&lt;&lt;&lt;55C-c25C-aaa&gt;&gt;sC-cZZ

C-xC-eadc&lt;&lt;&lt;55C-c25C-aaa&gt;&gt;sC-cZZ

C-xC-eadc&lt;&lt;&lt;55C-c25C-aaa&gt;&gt;sC-cZZ

C-xC-eacat&lt;&lt;&lt; f &gt;&gt;s
Execute the dc script:

C-xC-eadc sC-cZZ


Output:
PASSWORD_01

Contents of the s file:
49a48a95a68a82a79a87a83a83a65a80a
P
P
P
P
P
P
P
P
P
P
f