Solution to angerme

angerme.py

import angr

# Load the binary
import angr
proj = angr.Project('angrme')

# Create a simulation manager
simgr = proj.factory.simgr()

# Use the simulation manager to explore until win condition --> :)
simgr.explore(find=lambda s: b":)" in s.posix.dumps(1))

# Get the flag from the state
s = simgr.found[0]
flag = s.posix.dumps(0)
print(flag)