import angr

def main():
    # Load the binary
    project = angr.Project("challenge_binary")

    # Find the address of the main function (this may vary depending on the binary)
    main_addr = project.loader.main_object.get_symbol("main").rebased_addr

    # Create a state at the main function entry point
    state = project.factory.entry_state(addr=main_addr)

    # Create a simulation manager with the initial state
    simgr = project.factory.simgr(state)

    # Define the address of the "success" function or the address where the flag is printed (may vary)
    success_addr = 0x400000  # Replace with the actual address

    # Define the address of the "failure" function or the address where the program exits unsuccessfully (may vary)
    failure_addr = 0x400100  # Replace with the actual address

    # Explore the binary and find the path to success
    simgr.explore(find=success_addr, avoid=failure_addr)

    # If a solution is found, print it
    if simgr.found:
        solution_state = simgr.found[0]
        flag = solution_state.posix.dumps(0).decode("utf-8")
        print("Flag:", flag)
    else:
        print("No solution found")

if __name__ == "__main__":
    main()
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