QuickScan: trace the binary, isolate the validation routine, and invert it to recover the flag.
rev
Writeups
380 postspwn
RaceCar
RaceCar: use the format-string bug for a leak or write, then redirect execution to the flag path.
forensics
Sp00ky Theme
Sp00ky Theme: isolate the relevant artifact, decode the evidence, and extract the flag.
hardware
VHDLock
VHDLock: decode the captured signal, map the bitstream, and recover the flag.
hardware
The Last Frontier
The Last Frontier: decode the captured signal, map the bitstream, and recover the flag.
pwn
El Mundo
El Mundo: calculate the overflow offset, redirect control flow, and land a reliable flag read.
pwn
El Pipo
El Pipo: calculate the overflow offset, redirect control flow, and land a reliable flag read.
crypto
RsaCtfTool
RsaCtfTool: abuse the AES misuse, derive the missing key material, and decrypt the flag.
machinemachine
LinkVortex
LinkVortex: use CVE-2023-40028 where it fits the service, gain a shell, and escalate to root.
machinemachine
Bizness
Bizness: use CVE-2023-49070 and CVE-2023-51467 where it fits the service, gain a shell, and escalate to root.
machinemachine
Inject
Inject: enumerate the AD surface, abuse the exposed credential or delegation path, and escalate to Administrator.
machinemachine
Unrested
Unrested: use CVE-2024-36467 and CVE-2024-42327 where it fits the service, gain a shell, and escalate to root.
machinemachine
Vintage
Vintage: enumerate the AD surface, abuse the exposed credential or delegation path, and escalate to Administrator.
pwn
Kernel Adventures 2
Kernel Adventures 2: build the shellcode path, control execution, and read the flag.
weblocked
ScreenCrack
misclocked
Touch
misc
Bag Secured
Bag Secured: reduce the custom rules to a scriptable check and use the smallest reliable path to the flag.
hardware
Intrusion
Intrusion: decode the captured signal, map the bitstream, and recover the flag.
misc
MultiDigilingual
MultiDigilingual: reduce the custom rules to a scriptable check and use the smallest reliable path to the flag.
misc
Addition
Addition: reduce the custom rules to a scriptable check and use the smallest reliable path to the flag.
web
C.O.P
C.O.P: exploit the SQL injection, extract the needed data, and reach the flag.
crypto
CandyVault
CandyVault: model the crypto leak, recover the missing secret, and decrypt the flag.
web
Cursed Stale Policy
Cursed Stale Policy: abuse websocket to cross the web trust boundary and recover the flag.
web
DLLAMA
DLLAMA: abuse unsafe deserialization to cross the trust boundary and reach the flag.
pwnlocked
Execute
forensicslocked
Fishy HTTP
web
Gunship
Gunship: identify the broken request handling, prove control, and use it to recover the flag.
web
Jscalc
Jscalc: use path traversal to escape the intended read path and recover the flag.