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author | Maik Betka <9078425+voidptr127@users.noreply.github.com> | 2023-04-21 11:31:22 +0200 |
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committer | Maik Betka <9078425+voidptr127@users.noreply.github.com> | 2023-04-21 11:31:22 +0200 |
commit | 7101ffa1ae79e15d70905b09decbe69cdf53367b (patch) | |
tree | fd34b5686a4522dd6d29c9a40cee3d9826b2c7c6 /custom_mutators/examples/custom_send.c | |
parent | 9ab902402cd33156257fc0355c0105e7e03f5ba3 (diff) | |
parent | 4e5f42cab6b8c501eeaf76ec7ca920089f6e0f3a (diff) | |
download | afl++-7101ffa1ae79e15d70905b09decbe69cdf53367b.tar.gz |
Merge remote-tracking branch 'origin/dev' into atnwalk
# Conflicts: # include/afl-fuzz.h # src/afl-fuzz-run.c
Diffstat (limited to 'custom_mutators/examples/custom_send.c')
-rw-r--r-- | custom_mutators/examples/custom_send.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/custom_mutators/examples/custom_send.c b/custom_mutators/examples/custom_send.c new file mode 100644 index 00000000..9cc4b160 --- /dev/null +++ b/custom_mutators/examples/custom_send.c @@ -0,0 +1,63 @@ +// +// This is an example on how to use afl_custom_send +// It writes each mutated data set to /tmp/foo +// You can modify this to send to IPC, shared memory, etc. +// +// cc -O3 -fPIC -shared -g -o custom_send.so -I../../include custom_send.c +// cd ../.. +// afl-cc -o test-instr test-instr.c +// AFL_CUSTOM_MUTATOR_LIBRARY=custom_mutators/examples/custom_send.so \ +// afl-fuzz -i in -o out -- ./test-instr -f /tmp/foo +// + +#include <stdio.h> +#include <stdint.h> +#include <stdlib.h> +#include <unistd.h> +#include <fcntl.h> + +#include "afl-fuzz.h" + +typedef struct my_mutator { + + afl_state_t *afl; + +} my_mutator_t; + +my_mutator_t *afl_custom_init(afl_state_t *afl, unsigned int seed) { + + my_mutator_t *data = calloc(1, sizeof(my_mutator_t)); + if (!data) { + + perror("afl_custom_init alloc"); + return NULL; + + } + + data->afl = afl; + + return data; + +} + +void afl_custom_fuzz_send(my_mutator_t *data, uint8_t *buf, size_t buf_size) { + + int fd = open("/tmp/foo", O_CREAT | O_NOFOLLOW | O_TRUNC | O_RDWR, 0644); + + if (fd >= 0) { + + (void)write(fd, buf, buf_size); + close(fd); + + } + + return; + +} + +void afl_custom_deinit(my_mutator_t *data) { + + free(data); + +} + |