/
aws-s3-user-access.py
499 lines (457 loc) · 29.8 KB
/
aws-s3-user-access.py
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'''
Enumerates the Users and their S3 bucket privileges through the following way:
UserName: user1
User Inline Policy: inline_policy_1
S3 Bucket: arn:aws:s3:::s3bucket-1
Action: s3:*
User Inline Policy: managed_policy_1
S3 Bucket: arn:aws:s3:::s3bucket_2
Action: s3:*
Group Name: group_1
Inline Policy: group_inline_policy_1
S3 Bucket: arn:aws:s3:::s3bucket_3
Action: s3:*
Group Name: group_2
Managed Policy: group_managed_policy_1
S3 Bucket: arn:aws:s3:::s3bucket_4
Action: s3:*
Author: aarvee
Notice: Please note that this script is in Beta Stage and any bug fixes or issues can be notofied to me via github!
'''
import boto3
import json
class color:
PURPLE = '\033[95m'
CYAN = '\033[96m'
DARKCYAN = '\033[36m'
BLUE = '\033[94m'
GREEN = '\033[92m'
YELLOW = '\033[93m'
RED = '\033[91m'
BOLD = '\033[1m'
UNDERLINE = '\033[4m'
END = '\033[0m'
iam = boto3.client('iam')
iamresource = boto3.resource('iam')
roles = iam.list_roles()
users = iam.list_users()
s3 = boto3.resource('s3')
s3client = boto3.client('s3')
list_of_buckets = s3client.list_buckets()
print(color.CYAN + color.BOLD + '----------------------------------------------------')
print('No. of S3 Buckets: {}'.format(len(list_of_buckets["Buckets"])))
print('List given below:')
print('----------------------------------------------------' + color.END)
for bucket in list_of_buckets["Buckets"]:
# NOTE: LISTING OF FILES IN THE BUCKETS HAS BEEN COMMENTED OUT AS IT TAKES A LONG TIME IF YOU HAVE LARGE NUMBER OF FILES IN BUCKETS
# Create a paginator to pull 1000 objects at a time
#paginator = s3client.get_paginator('list_objects')
#pageresponse = paginator.paginate(Bucket=bucket["Name"])
#s3objects_list = []
#try:
# PageResponse Holds 1000 objects at a time and will continue to repeat in chunks of 1000.
# for pageobject in pageresponse:
# for file in pageobject["Contents"]:
# s3objects_list.append(file["Key"])
#except KeyError:
# print 'EMPTY BUCKET'
# pass
# Final Result
print(color.CYAN + 'Bucket Name: {}'.format(bucket['Name']) + color.END)
# Enumerate all the roles
Role_list = roles['Roles']
role_arn_list = []
for role in Role_list:
role_arn_list.append(role['Arn'])
# Enumerate all the users and their policies and groups
for key in users['Users']:
user_name = key['UserName']
print(color.CYAN + '=' * 112 + color.END)
print(color.BOLD + color.RED + 'UserName: {}'.format(user_name) + color.END)
Inline_user_policies = iam.list_user_policies(UserName=user_name)
Managed_user_policies = iam.list_attached_user_policies(UserName=user_name)
List_of_Groups = iam.list_groups_for_user(UserName=key['UserName'])
managed_policy_list = [] # All Managed policies
final_managed_policy_list = [] # All Managed policies with S3 Bucket action
managed_policy_action_list = [] # All Managed Policy S3 Action list
managed_policy_resource_list = [] # All Managed Policy S3 Buckets
inline_policy_list = [] # All Inline policies
final_inline_policy_list = [] # All Inline policies with S3 Bucket action
inline_policy_action_list = [] # All Inline Policy S3 Action list
inline_policy_resource_list = [] # All Inline Policy S3 Buckets
group_inline_policy_list = [] # All Groups Inline policies with S3 Bucket action
group_inline_policy_action_list = [] # All Groups Inline Policy S3 Action list
group_inline_policy_resource_list = [] # All Groups Inline Policy S3 Buckets
group_managed_policy_list = [] # All Groups Managed policies with S3 Bucket action
group_managed_policy_action_list = [] # All Groups Managed Policy S3 Action list
group_managed_policy_resource_list = [] # All Groups Managed Policy S3 Buckets
# Read all the Inline policies attached to the user
for inline_policy_name in Inline_user_policies['PolicyNames']:
inline_policy_list.append(inline_policy_name)
for policy_name in inline_policy_list:
description = iam.get_user_policy(
UserName=user_name,
PolicyName=policy_name
)
# Convert the output into JSON
desc_json = json.dumps(description)
final_desc = json.loads(desc_json)
# Load Statement in the Policy Document into a separate JSON
desc_stmt = json.dumps(final_desc['PolicyDocument']['Statement'])
final_stmt = json.loads(desc_stmt)
# Iterate through all the Actions in the Statement JSON as there could be multiple Actions
for statement in final_stmt:
action_raw = json.dumps(statement['Action'])
action_json = json.loads(action_raw)
resource_raw = json.dumps(statement['Resource'])
resource_json = json.loads(resource_raw)
flag = '0'
if type(resource_json) is list:
for s3bucket in resource_json:
if 's3' in s3bucket:
if flag == '0':
print(color.YELLOW + '\tUser Inline Policy: {}'.format(inline_policy_name) + color.END)
flag = '1'
print(color.BLUE + '\t\tS3 Bucket: {}'.format(s3bucket) + color.END)
if type(action_json) is list:
for action_print in action_json:
print(color.PURPLE + '\t\t\tAction: {}'.format(action_print) + color.END)
else:
print(color.PURPLE + '\t\t\tAction: {}'.format(action_json) + color.END)
else:
if 's3' in resource_json:
if flag == '0':
print(color.YELLOW + '\tUser Inline Policy: {}'.format(inline_policy_name) + color.END)
flag = '1'
print(color.BLUE + '\t\tS3 Bucket: {}'.format(resource_json) + color.END)
if type(action_json) is list:
for action_print in action_json:
print(color.PURPLE + '\t\t\tAction: {}'.format(action_print) + color.END)
else:
print(color.PURPLE + '\t\t\tAction: {}'.format(action_json) + color.END)
# Read all the Managed Policies of every user
for managed_policy in Managed_user_policies['AttachedPolicies']:
policy_arn = managed_policy['PolicyArn']
managed_policy_list.append(managed_policy['PolicyName'])
for policy_name in managed_policy_list:
description = iam.get_policy(
PolicyArn=policy_arn
)
policy_policy = description['Policy']
policy_version = policy_policy['DefaultVersionId']
document = iam.get_policy_version(
PolicyArn=policy_arn,
VersionId=policy_version
)
document_policy_version = document['PolicyVersion']
document_policy_doc = document_policy_version['Document']
document_policy_statement = document_policy_doc['Statement']
policy_doc_dump = json.dumps(document_policy_statement)
policy_doc_json = json.loads(policy_doc_dump)
flag = '0'
if type(policy_doc_json) is list:
for policy in policy_doc_json:
policy_dump = json.dumps(policy)
policy_json = json.loads(policy_dump)
flag = '0'
if type(policy_json['Resource']) is list:
for resource in policy_json['Resource']:
flag2 = '0'
if ('s3' in resource) or ('*' == resource):
try:
if type(policy_json['Action']) is list:
for action_print in policy_json['Action']:
if ('s3' in action_print) or ('*' == action_print):
if flag == '0':
print(color.YELLOW + '\tUser Managed Policy: {}'.format(managed_policy['PolicyName']) + color.END)
flag = '1'
if flag2 == '0':
print(color.BLUE + '\t\tS3 Bucket: {}'.format(resource) + color.END)
flag2 = '1'
print(color.PURPLE + '\t\t\tAction: {}'.format(action_print) + color.END)
else:
if ('s3' in policy_json['Action']) or ('*' == policy_json['Action']):
if flag == '0':
print(color.YELLOW + '\tUser Managed Policy: {}'.format(managed_policy['PolicyName']) + color.END)
flag = '1'
if flag2 == '0':
print(color.BLUE + '\t\tS3 Bucket: {}'.format(resource) + color.END)
flag2 = '1'
print(color.PURPLE + '\t\t\tAction: {}'.format(policy_json['Action']) + color.END)
except KeyError:
pass
else:
resource = policy_json['Resource']
flag2 = '0'
if ('s3' in resource) or ('*' == resource):
try:
if type(policy_json['Action']) is list:
for action_print in policy_json['Action']:
if ('s3' in action_print) or ('*' == action_print):
if flag == '0':
print(color.YELLOW + '\tUser Managed Policy: {}'.format(managed_policy['PolicyName']) + color.END)
flag = '1'
if flag2 == '0':
print(color.BLUE + '\t\tS3 Bucket: {}'.format(resource) + color.END)
flag2 = '1'
print(color.PURPLE + '\t\t\tAction: {}'.format(action_print) + color.END)
else:
action_print = policy_json['Action']
if ('s3' in action_print) or ('*' == action_print):
if flag == '0':
print(color.YELLOW + '\tUser Managed Policy: {}'.format(managed_policy['PolicyName']) + color.END)
flag = '1'
if flag2 == '0':
print(color.BLUE + '\t\tS3 Bucket: {}'.format(resource) + color.END)
flag2 = '1'
print(color.PURPLE + '\t\t\tAction: {}'.format(action_print) + color.END)
except KeyError:
pass
# Find the Users in the Groups that have S3 Access
for group_dump in List_of_Groups['Groups']:
group = iamresource.Group(group_dump['GroupName'])
# A Group can have inline policies and managed policies attached to it
inline_group_policy = list(group.policies.all())
managed_group_policy = list(group.attached_policies.all())
flag_group = '0'
# Start the function if a User is a part of a group that has Inline Policies
if inline_group_policy:
flag3 = '0'
flag_inline_policy = '0'
for policy in inline_group_policy:
group_policy_doc_raw = policy.policy_document
group_policy_doc_raw_json = json.dumps(group_policy_doc_raw)
group_policy_doc_json = json.loads(group_policy_doc_raw_json)
statement_raw = group_policy_doc_json['Statement']
statement_dump = json.dumps(statement_raw)
statement_json = json.loads(statement_dump)
flag4 = '0'
if type(statement_json) is list:
for statement in statement_json:
if type(statement['Resource']) is list:
for resource in statement['Resource']:
if ('s3' in resource) or ('*' == resource):
if type(statement['Action']) is list:
for action_print in statement['Action']:
if ('s3' in action_print) or ('*' == action_print):
if flag3 == '0':
print(color.DARKCYAN + '\tGroup Name: {}'.format(group_dump['GroupName']) + color.END)
flag3 = '1'
if flag_inline_policy == '0':
print(color.YELLOW + '\t\tInline Policy: {}'.format(arn) + color.END)
flag_inline_policy = '1'
if flag4 == '0':
print(color.BLUE + '\t\t\tS3 Bucket: {}'.format(resource) + color.END)
flag4 = '1'
print(color.PURPLE + '\t\t\t\tAction: {}'.format(action_print) + color.END)
else:
action_print = statement['Action']
if ('s3' in action_print) or ('*' == action_print):
if flag3 == '0':
print(color.DARKCYAN + '\tGroup Name: {}'.format(group_dump['GroupName']) + color.END)
flag3 = '1'
if flag_inline_policy == '0':
print(color.YELLOW + '\t\tInline Policy: {}'.format(arn) + color.END)
flag_inline_policy = '1'
if flag4 == '0':
print(color.BLUE + '\t\t\tS3 Bucket: {}'.format(resource) + color.END)
flag4 = '1'
print(color.PURPLE + '\t\t\t\tAction: {}'.format(action_print) + color.END)
else:
resource = statement['Resource']
if ('s3' in resource) or ('*' == resource):
if type(statement['Action']) is list:
for action_print in statement['Action']:
if ('s3' in action_print) or ('*' == action_print):
if flag3 == '0':
print(color.DARKCYAN + '\tGroup Name: {}'.format(group_dump['GroupName']) + color.END)
flag3 = '1'
if flag_inline_policy == '0':
print(color.YELLOW + '\t\tInline Policy: {}'.format(arn) + color.END)
flag_inline_policy = '1'
if flag4 == '0':
print(color.BLUE + '\t\t\tS3 Bucket: {}'.format(resource) + color.END)
flag4 = '1'
print(color.PURPLE + '\t\t\t\tAction: {}'.format(action_print) + color.END)
else:
action_print = statement['Action']
if ('s3' in action_print) or ('*' == action_print):
if flag3 == '0':
print(color.DARKCYAN + '\tGroup Name: {}'.format(group_dump['GroupName']) + color.END)
flag3 = '1'
if flag_inline_policy == '0':
print(color.YELLOW + '\t\tInline Policy: {}'.format(arn) + color.END)
flag_inline_policy = '1'
if flag4 == '0':
print(color.BLUE + '\t\t\tS3 Bucket: {}'.format(resource) + color.END)
flag4 = '1'
print(color.PURPLE + '\t\t\t\tAction: {}'.format(action_print) + color.END)
else:
statement = statement_json
if type(statement['Resource']) is list:
for resource in statement['Resource']:
if ('s3' in resource) or ('*' == resource):
if type(statement['Action']) is list:
for action_print in statement['Action']:
if ('s3' in action_print) or ('*' == action_print):
if flag3 == '0':
print(color.DARKCYAN + '\tGroup Name: {}'.format(group_dump['GroupName']) + color.END)
flag3 = '1'
if flag_inline_policy == '0':
print(color.YELLOW + '\t\tInline Policy: {}'.format(arn) + color.END)
flag_inline_policy = '1'
if flag4 == '0':
print(color.BLUE + '\t\t\tS3 Bucket: {}'.format(resource) + color.END)
flag4 = '1'
print(color.PURPLE + '\t\t\t\tAction: {}'.format(action_print) + color.END)
else:
action_print = statement['Action']
if ('s3' in action_print) or ('*' == action_print):
if flag3 == '0':
print(color.DARKCYAN + '\tGroup Name: {}'.format(group_dump['GroupName']) + color.END)
flag3 = '1'
if flag_inline_policy == '0':
print(color.YELLOW + '\t\tInline Policy: {}'.format(arn) + color.END)
flag_inline_policy = '1'
if flag4 == '0':
print(color.BLUE + '\t\t\tS3 Bucket: {}'.format(resource) + color.END)
flag4 = '1'
print(color.PURPLE + '\t\t\t\tAction: {}'.format(action_print) + color.END)
else:
resource = statement['Resource']
if ('s3' in resource) or ('*' == resource):
if type(statement['Action']) is list:
for action_print in statement['Action']:
if ('s3' in action_print) or ('*' == action_print):
if flag3 == '0':
print(color.DARKCYAN + '\tGroup Name: {}'.format(group_dump['GroupName']) + color.END)
flag3 = '1'
if flag_inline_policy == '0':
print(color.YELLOW + '\t\tInline Policy: {}'.format(arn) + color.END)
flag_inline_policy = '1'
if flag4 == '0':
print(color.BLUE + '\t\t\tS3 Bucket: {}'.format(resource) + color.END)
flag4 = '1'
print(color.PURPLE + '\t\t\t\tAction: {}'.format(action_print) + color.END)
else:
action_print = statement['Action']
if ('s3' in action_print) or ('*' == action_print):
if flag3 == '0':
print(color.DARKCYAN + '\tGroup Name: {}'.format(group_dump['GroupName']) + color.END)
flag3 = '1'
if flag_inline_policy == '0':
print(color.YELLOW + '\t\tInline Policy: {}'.format(arn) + color.END)
flag_inline_policy = '1'
if flag4 == '0':
print(color.BLUE + '\t\t\tS3 Bucket: {}'.format(resource) + color.END)
flag4 = '1'
print(color.PURPLE + '\t\t\t\tAction: {}'.format(action_print) + color.END)
# Start the function if a User is a part of a group that has Managed Policies
if managed_group_policy:
for policy in managed_group_policy:
policy_string = str(policy)
remove, result1 = policy_string.split("iam.Policy(arn='")
arn, remove = result1.split("')")
description = iam.get_policy(
PolicyArn=arn
)
policy_policy = description['Policy']
policy_version = policy_policy['DefaultVersionId']
document = iam.get_policy_version(
PolicyArn=arn,
VersionId=policy_version
)
document_policy_version = document['PolicyVersion']
document_policy_doc = document_policy_version['Document']
document_policy_statement = document_policy_doc['Statement']
policy_doc = json.dumps(document_policy_statement)
policy_doc_json = json.loads(policy_doc)
flag_managed_policy = '0'
for policy in policy_doc_json:
policy_dump = json.dumps(policy)
policy_json = json.loads(policy_dump)
try:
flag5 = '0'
if policy_json['Resource'] is dict:
for resource in policy_json['Resource']:
if type(policy_json['Action']) is list:
for action_print in policy_json['Action']:
if ('s3' in action_print) or ('*' == action_print):
if flag_group == '0':
print(color.DARKCYAN + '\tGroup Name: {}'.format(group_dump['GroupName']) + color.END)
flag_group = '1'
if flag_managed_policy == '0':
print(color.YELLOW + '\t\tManaged Policy: {}'.format(arn) + color.END)
flag_managed_policy = '1'
if flag5 == '0':
if type(resource) is list:
for bucket_name in resource:
print(color.BLUE + '\t\t\tS3 Bucket: {}'.format(bucket_name) + color.END)
print(color.PURPLE + '\t\t\t\tAction: {}'.format(action_print) + color.END)
else:
bucket_name = resource
print(color.BLUE + '\t\t\tS3 Bucket: {}'.format(bucket_name) + color.END)
print(color.PURPLE + '\t\t\t\tAction: {}'.format(action_print) + color.END)
flag5 = '1'
else:
action_print = policy_json['Action']
if ('s3' in action_print) or ('*' == action_print):
if flag_group == '0':
print(color.DARKCYAN + '\tGroup Name: {}'.format(group_dump['GroupName']) + color.END)
flag_group = '1'
if flag_managed_policy == '0':
print(color.YELLOW + '\t\tManaged Policy: {}'.format(arn) + color.END)
flag_managed_policy = '1'
if flag5 == '0':
if type(resource) is list:
for bucket_name in resource:
print(color.BLUE + '\t\t\tS3 Bucket: {}'.format(bucket_name) + color.END)
print(color.PURPLE + '\t\t\t\tAction: {}'.format(action_print) + color.END)
else:
bucket_name = resource
print(color.BLUE + '\t\t\tS3 Bucket: {}'.format(bucket_name) + color.END)
print(color.PURPLE + '\t\t\t\tAction: {}'.format(action_print) + color.END)
flag5 = '1'
else:
resource = policy_json['Resource']
if type(policy_json['Action']) is list:
for action_print in policy_json['Action']:
if ('s3' in action_print) or ('*' == action_print):
if flag_group == '0':
print(color.DARKCYAN + '\tGroup Name: {}'.format(group_dump['GroupName']) + color.END)
flag_group = '1'
if flag_managed_policy == '0':
print(color.YELLOW + '\t\tManaged Policy: {}'.format(arn) + color.END)
flag_managed_policy = '1'
if flag5 == '0':
if type(resource) is list:
for bucket_name in resource:
print(color.BLUE + '\t\t\tS3 Bucket: {}'.format(bucket_name) + color.END)
print(color.PURPLE + '\t\t\t\tAction: {}'.format(action_print) + color.END)
else:
bucket_name = resource
print(color.BLUE + '\t\t\tS3 Bucket: {}'.format(bucket_name) + color.END)
print(color.PURPLE + '\t\t\t\tAction: {}'.format(action_print) + color.END)
flag5 = '1'
else:
action_print = policy_json['Action']
if ('s3' in action_print) or ('*' == action_print):
if flag_group == '0':
print(color.DARKCYAN + '\tGroup Name: {}'.format(group_dump['GroupName']) + color.END)
flag_group = '1'
if flag_managed_policy == '0':
print(color.YELLOW + '\t\tManaged Policy: {}'.format(arn) + color.END)
flag_managed_policy = '1'
if flag5 == '0':
if type(resource) is list:
for bucket_name in resource:
print(color.BLUE + '\t\t\tS3 Bucket: {}'.format(bucket_name) + color.END)
print(color.PURPLE + '\t\t\t\tAction: {}'.format(action_print) + color.END)
else:
bucket_name = resource
print(color.BLUE + '\t\t\tS3 Bucket: {}'.format(bucket_name) + color.END)
print(color.PURPLE + '\t\t\t\tAction: {}'.format(action_print) + color.END)
flag5 = '1'
except KeyError:
print(KeyError)
pass