zuypt

A = [0x8e,0x63,0xcd,0x12,0x4b,0x58,0x15,0x17,0x51,0x22,0xd9,0x4,0x51,0x2c,0x19,0x15,0x86,0x2c,0xd1,0x4c,0x84,0x2e,0x20,0x6]



def a(b):
	return chr(b-0x1e)

def b(b):
	return chr( (b^7) + 8)

zuypt

Found a valid interpeter in /lib/x86_64-linux-gnu/ld-2.27.so, will report shared library events!
7FFF7DDA3000: loaded [vdso]
7FD71332F000: loaded /lib/x86_64-linux-gnu/ld-2.27.so
Rebasing program to 0x00005596F08F4000...
5596F08F4000: process /media/sf_Desktop/HITCON19/EmojiVM/emojivm_reverse/emojivm has started (pid=2052)
7FD712FA6000: loaded /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.25
7FD712D8E000: loaded /lib/x86_64-linux-gnu/libgcc_s.so.1
7FD71299D000: loaded /lib/x86_64-linux-gnu/libc-2.27.so
7FD7125FF000: loaded /lib/x86_64-linux-gnu/libm-2.27.so
mul a*6=3c

zuypt

console.show()

function gc() {
	for(var i = 0; i < 3; i++) {
		var z = new ArrayBuffer(1024*1024*100)
	}
}

String.prototype.hex = function() {
	var r = ''