M3t4 M4dn3$$

Downloading Challenge Files

here is the executable file to download

761B

M3t4 M4dn3$$.rar

we are given this code that prints the decoded message

but if we run it it doesn't give any result and this is because of exec

the exec() function does not return a value, it only executes the code. Therefore, the variable decoded_message will not hold the decoded message. If you want to print the decoded message, you should remove exec()

now we are given the decryption algorithm let's copy the code outputed and put down the cipherflag array and then remove the key so it will print the flag

Flag

DEFENSYS{M3t4pr0gr4mm1ng_1s_r34lly_w1ld_4nd_Ch40tic:)}

Greetings from Sayonara