Shady Oaks Financial

Level: Easy Points: 10 Type: Daily Challenge

After Sign-up , login the interesting feature is ability to exchange currency. At the beginning, we have €1000

First thing that comes in my mind looking at the conversion feature is possibility of Race Condition. For this, I tried to convert all €1000 to USD.

Intercept request,

Send request to repeater, Drop request from Intercept tab

In repeater tab, create multiple duplicate tab, add all them to group and select send group (parallel)

Send request as group (parallel), triggers Race conditions and gives us flag.