Created
May 14, 2018 12:09
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defconquals2018 ELF-Crumble
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import itertools | |
f = open("broken") | |
brokendata = f.read() | |
f.close() | |
head = 0x5ad | |
tail = 0x8d4 | |
brokenhead = brokendata[0:head] | |
mid = brokendata[head:tail] | |
brokentail = brokendata[tail:] | |
fragments = [] | |
for i in range(1,9): | |
s = "fragment_" + str(i) + ".dat" | |
print "Reading " + s | |
t = open(s,"r") | |
data = t.read() | |
fragments.append(data) | |
t.close() | |
print fragments | |
x = [1,2,3,4,5,6,7,8] | |
perms = list(itertools.permutations(x,8)) | |
print "Perms created size : " + str(len(perms)) | |
dat = "" | |
c = 0 | |
for idx,i in enumerate(perms): | |
dat = brokenhead | |
for k in i: | |
dat += fragments[k-1] | |
dat += brokentail | |
j = open("bin_"+str(c),"w") | |
j.write(dat) | |
j.close() | |
c += 1 | |
if(c%100): | |
print "bin_" + str(c) +" created" | |
""" | |
bash script to run all of them , correct binary is 39690 so it will take time | |
for i in {1..40260} | |
do | |
NAME="bin_$i" | |
./$NAME | |
done | |
""" |
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