tags / cloud
3 posts
Writeup for Cold Storage, a 4-flag Cloud/AWS challenge from Dubai Cyber Challenge 2026 - chaining an open Cognito signup, a homegrown path-traversal filter, a client-editable authorization attribute, and SSRF to IMDS into full IAM credential theft and a KMS-protected flag.
Writeup for Data Portal, a Cloud/AWS challenge from Dubai Cyber Challenge 2026 - an unauthenticated SSRF proxy chained through ECS task metadata into a public ECR image pull.
Writeup for Lost Luggage, a Cloud/AWS challenge from Dubai Cyber Challenge 2026 - chaining a debug endpoint leak into a direct, unauthenticated S3 read that bypasses the app's own access control.
