I have a modified version of SpiderMonkey, Mozilla’s (old) JavaScript parser, that helps me with JavaScript analysis.
Details here.
js.exe -e “document.output(‘x’);” sample.js
zipdump.py -s 1 -d sample.js.zip | js.exe -e “document.output(‘a’);” –
zipdump.py -s 1 -d sample.js.zip | js.exe -e “document.output(‘d’);” –
zipdump.py -s 1 -d sample.js.zip | js.exe -e “document.output(‘X’);” –
zipdump.py -s 1 -d sample.js.zip | js.exe -e “document.output(‘A’);” –
zipdump.py -s 1 -d sample.js.zip | js.exe -e “document.output(‘D’);” –
zipdump.py -s 1 -d sample.js.zip | js.exe -e “document.output(‘f’);” –
zipdump.py -s 1 -d sample.js.zip | js.exe –
Didier Stevens 