28.3.16

[Writeup] Challenge3.exe

Simple write-up here and some source code for poc
 The binary is a visual c++ application from PE identifier and not packed with any packer.

when open up the file we will see this windows


error message is like this

the algo/logic in assembly with my messed up comment on each line


the algo in psuedocode is
//a is input character
//value 2108268 in decimal


[(a1*2)+(a3*5)+(a5*1)+(a2*3)+(a4*7)+(a6*3)+(a7*7)]*[a1+a2+a3+a4+a5+a6+a7]==2108268


WARNING! This is POC only, possible not working is expected.
5 najashark.net: [Writeup] Challenge3.exe Simple write-up here and some source code for poc  The binary is a visual c++ application from PE identifier and not packed with any packer...

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