selenologist

# OVH only lets you add integer values of credits at a time,
# but credits expire 13 months after being purchased.
# So, given the monthly cost of the service and a current balance of credits
# (possibly smaller than the monthly cost) there exists an amount of added credits 
# that will yield the lowest amount of leftover credits when the the balance becomes
# lower than the monthly cost.
#
# There's probably a smarter way to do this but this is computationally cheap enough that I
# really don't care.

selenologist

/* Ported to ARM by @Selenologist */

/*
 * CVE-2016-5195 dirtypoc
 *
 * This PoC is memory only and doesn't write anything on the filesystem.
 * /!\ Beware, it triggers a kernel crash a few minutes.
 *
 * gcc -Wall -o dirtycow-mem dirtycow-mem.c -ldl -lpthread
 */

def-

template offset(Typ, member): int {.immediate.} =
  var dummy: Typ
  cast[int](dummy.member.addr) -% cast[int](dummy.addr)

type Foo = object
  x: int
  y: int

echo offset(Foo, y)