tag

Htb

373 posts
web

Juggling facts

Juggling facts: identify the broken request handling, prove control, and use it to recover the flag.

web

KORP Terminal

KORP Terminal: exploit the SQL injection, extract the needed data, and reach the flag.

misc

MinMax

MinMax: reduce the custom rules to a scriptable check and use the smallest reliable path to the flag.

misc

misDIRection

misDIRection: reduce the custom rules to a scriptable check and use the smallest reliable path to the flag.

web

Neonify

Neonify: identify the broken request handling, prove control, and use it to recover the flag.

misc

Nothing Without A Cost

Nothing Without A Cost: reduce the custom rules to a scriptable check and use the smallest reliable path to the flag.

misc

Oddly Even

Oddly Even: reduce the custom rules to a scriptable check and use the smallest reliable path to the flag.

crypto

Optimus Prime

Optimus Prime: model the crypto leak, recover the missing secret, and decrypt the flag.

web

PetPet Rcbee

PetPet Rcbee: abuse file-upload to cross the web trust boundary and recover the flag.

web

Phonebook

Phonebook: identify the broken request handling, prove control, and use it to recover the flag.

web

Prying Eyes

Prying Eyes: use path traversal to escape the intended read path and recover the flag.

misc

Replacement

Replacement: reduce the custom rules to a scriptable check and use the smallest reliable path to the flag.

misc

Reversal

Reversal: reduce the custom rules to a scriptable check and use the smallest reliable path to the flag.

web

SpookTastic

SpookTastic: use the client-side injection path to steal the needed proof and recover the flag.

web

TimeKORP

TimeKORP: use path traversal to escape the intended read path and recover the flag.

web

Toxic

Toxic: abuse unsafe deserialization to cross the trust boundary and reach the flag.

web

Trapped Source

Trapped Source: identify the broken request handling, prove control, and use it to recover the flag.

web

Weather App

Weather App: use SSRF to reach the hidden service or file path and pull the flag.

crypto

Ancient Encodings

Ancient Encodings: model the crypto leak, recover the missing secret, and decrypt the flag.

rev

Dont't Panic

Dont't Panic: trace the binary, isolate the validation routine, and invert it to recover the flag.

pwn

El Teteo

El Teteo: build the shellcode path, control execution, and read the flag.

hardware

FF Jump Street

FF Jump Street: decode the captured signal, map the bitstream, and recover the flag.

crypto

Flippin Bank

Flippin Bank: reconstruct the generator state, derive the AES material, and decrypt the final ciphertext.

crypto

Gonna Lift Em All

Gonna Lift Em All: reconstruct the PRNG state from the leak, replay it, and recover the flag.

gamepwn

Hacky Bird

Hacky Bird: inspect the game logic, control the relevant state, and recover the flag.

pwn

Mathematricks

Mathematricks: build the exploit primitive, stabilize the payload, and use it to read the flag.

pwn

Que Onda

Que Onda: build the exploit primitive, stabilize the payload, and use it to read the flag.