Comments for >> More NOPs http://www.morenops.com You just never get enough of them! Tue, 29 Jun 2010 18:42:36 +0000 http://wordpress.org/?v=2.9.2 hourly 1 Comment on Egurra: A dumb file format fuzzer by jowjow http://www.morenops.com/?p=673&cpage=1#comment-2095 jowjow Tue, 29 Jun 2010 18:42:36 +0000 http://www.morenops.com/?p=673#comment-2095 I made some other modifications as well, once I am done tweaking and start deploying it on my nodes I will drop you a copy. I made some other modifications as well, once I am done tweaking and start deploying it on my nodes I will drop you a copy.

]]> Comment on Egurra: A dumb file format fuzzer by jon http://www.morenops.com/?p=673&cpage=1#comment-2094 jon Tue, 29 Jun 2010 18:28:07 +0000 http://www.morenops.com/?p=673#comment-2094 Now that's interesting. Thanks for the submission! :) Now that’s interesting. Thanks for the submission! :)

]]> Comment on Egurra: A dumb file format fuzzer by jowjow http://www.morenops.com/?p=673&cpage=1#comment-2092 jowjow Tue, 29 Jun 2010 12:36:50 +0000 http://www.morenops.com/?p=673#comment-2092 This allowed it to run for a long time with the same runtime without any errors obviously, <code> def fuzzCallback(self,buf): try: idatz = open("temp.%s" % self.ext,"w") idatz.write(buf) idatz.close() except IOError: print "[*] failed creating file this time, wasting time by reopening it" </code> This allowed it to run for a long time with the same runtime without any errors obviously,

def fuzzCallback(self,buf):
try:
idatz = open("temp.%s" % self.ext,"w")
idatz.write(buf)
idatz.close()
except IOError:
print "[*] failed creating file this time, wasting time by reopening it"

]]> Comment on Egurra: A dumb file format fuzzer by jon http://www.morenops.com/?p=673&cpage=1#comment-2090 jon Tue, 29 Jun 2010 10:37:35 +0000 http://www.morenops.com/?p=673#comment-2090 Great submission :) If this goes further we can also set up a GoogleCode project or something for a more formal development approach. Great submission :)
If this goes further we can also set up a GoogleCode project or something for a more formal development approach.

]]> Comment on Egurra: A dumb file format fuzzer by jowjow http://www.morenops.com/?p=673&cpage=1#comment-2089 jowjow Tue, 29 Jun 2010 08:12:05 +0000 http://www.morenops.com/?p=673#comment-2089 I'll mess around with the runtime, thanks for releasing the code, allowing me to not have to write it myself (gray hat python was good :). I translated some of the code to english / more meaningful variable names for clarity, <code> file_content = open(fitx,"r").read() file_length = len(file_content) random.seed(time.time()) numberofbytestoswap = random.randrange(math.ceil(float(file_length)/factor))+1 print "[*] swapping %d bytes" % numberofbytestoswap for i in range(numberofbytestoswap): randomcharacter = random.randrange(256) # print "inserting this byte: %d" % randomcharacter whereinthefile = random.randrange(file_length) new_file_content = file_content[0:whereinthefile-1] new_file_content = new_file_content + "%c" % (randomcharacter) new_file_content = new_file_content + file_content[whereinthefile:file_length] file_content = new_file_content func(file_content) </code> I’ll mess around with the runtime, thanks for releasing the code, allowing me to not have to write it myself (gray hat python was good :). I translated some of the code to english / more meaningful variable names for clarity,

file_content = open(fitx,"r").read()
file_length = len(file_content)

random.seed(time.time())
numberofbytestoswap = random.randrange(math.ceil(float(file_length)/factor))+1
print "[*] swapping %d bytes" % numberofbytestoswap
for i in range(numberofbytestoswap):
randomcharacter = random.randrange(256)
# print "inserting this byte: %d" % randomcharacter
whereinthefile = random.randrange(file_length)
new_file_content = file_content[0:whereinthefile-1]
new_file_content = new_file_content + "%c" % (randomcharacter)
new_file_content = new_file_content + file_content[whereinthefile:file_length]
file_content = new_file_content
func(file_content)

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