The subject is not wellcovered by tools, so you could even write yourself one
some materials...
https://www.hex-rays.com/products/ida/support/ppt/caro_obfuscation.ppt
http://recon.cx/2008/a/eric_d_lapse/Deobfuscator_RECON2008.ppt
optimice Deobfuscation plugin for IDA
http://code.google.com/p/optimice/
Simple Deobfuscation of Code Transformation
http://hooked-on-mnemonics.blogspot.com/2012/10/simple-deobfuscation-of-code.html
IDA Plugin deofuscator plugin
http://www.openrce.org/forums/posts/1915
Ariadne Deobfuscation Technology (IDA/Olly plugins)
http://ariadne.group-ib.ru/en/about
or here http://www.woodmann.com/collaborative/tools/index.php/Ariadne
Attacking Obfuscated code with Ida Pro
http://www.blackhat.com/presentations/bh-usa-04/bh-us-04-eagle.pdf
Code doctor plugin has some deobfuscating features
http://www.woodmann.com/collaborative/tools/index.php/CodeDoctor
lots of cool IDA plugins coudl be found in contests by years
https://www.hex-rays.com/contests/index.shtml
......