You signed in with another tab or window. Reload to refresh your session.You signed out in another tab or window. Reload to refresh your session.You switched accounts on another tab or window. Reload to refresh your session.Dismiss alert
*] Spinning up the fork server...
[-] Hmm, looks like the target binary terminated before we could complete a
handshake with the injected code. Perhaps there is a horrible bug in the
fuzzer. Poke <afl-users@googlegroups.com> for troubleshooting tips.
[-] PROGRAM ABORT : Fork server handshake failed
Location : afl_fsrv_start(), src/afl-forkserver.c:726
I created an image like the one from syzkaller and I was able to attach ucf to the breakpoint however I run into the issue above when I run ucf fuzz
at the end of config.py
if len(input) > 1500:
import os
os._exit(0) # too big!
# read input to the correct position at param rdx here:
rdx = uc.reg_read(UC_X86_REG_RDX)
rdi = uc.reg_read(UC_X86_REG_RDI)
ucf.map_page(uc, rdx) # ensure sk_buf is mapped
bufferPtr = struct.unpack("<Q", uc.mem_read(rdx + 0xD8, 8))[0]
ucf.map_page(uc, bufferPtr) # ensure the buffer is mapped
uc.mem_write(rdi, input) # insert afl input
uc.mem_write(rdx + 0xC4, b"\xdc\x05") # fix tail
def place_input(ucf: Unicorefuzz, uc: Uc, input: bytes) -> None:
rax = uc.reg_read(UC_X86_REG_RAX)
# make sure the parameter memory is mapped
ucf.map_page(uc, rax)
uc.mem_write(rax, input) # insert afl input
#init_func(Uc)
#place_input(Unicorefuzz, Uc, AFL_INPUTS)
The text was updated successfully, but these errors were encountered:
This usually means your python script crashes.
If you want more output from afl, run afl-fuzz with AFL_DEBUG_CHILD=1.
Probably a script throwing an exception at some point.
I created an image like the one from syzkaller and I was able to attach ucf to the breakpoint however I run into the issue above when I run ucf fuzz
at the end of config.py
The text was updated successfully, but these errors were encountered: