solved by 
hartmannsyg
CTFd is overrated. My flag checker is both fast and secure!
We are given a binary that checks for a flag. Thankfully when we shove it to ghidra it is quite apparent what the flag is:
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| undefined8 main(void)
{
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printf("Enter flag: ");
__isoc99_scanf(&DAT_00102011,&local_38);
if (local_38 == 'b') {
if (local_37 == 'l') {
if (local_36 == 'a') {
if (local_35 == 'h') {
if (local_34 == 'a') {
if (local_33 == 'j') {
if (local_32 == '{') {
if (local_31 == 'w') {
if (local_30 == 'h') {
if (local_2f == '4') {
if (local_2e == '7') {
if (local_2d == '_') {
if (local_2c == 'D') {
if (local_2b == '3') {
if (local_2a == 'C') {
if (local_29 == '0') {
if (local_28 == 'M') {
if (local_27 == 'P') {
if (local_26 == '1') {
if (local_25 == 'L') {
if (local_24 == '3') {
if (local_23 == 'r') {
if (local_22 == '_') {
if (local_21 == 'd') {
if (local_20 == '0') {
if (local_1f == '_') {
if (local_1e == 'y') {
if (local_1d == '0') {
if (local_1c == 'U') {
if (local_1b == '_') {
if (local_1a == 'U') {
if (local_19 == 's') {
if (local_18 == '3') {
if (local_17 == '?') {
if (local_16 == '}') {
puts("Correct flag!");
}
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return 0;
} |
blahaj{wh47_D3C0MP1L3r_d0_y0U_Us3?}