diff --git a/client/global.go b/client/global.go
index 50b935d0..d30f8a23 100644
--- a/client/global.go
+++ b/client/global.go
@@ -119,11 +119,11 @@ func getSSOAddress() ([]netip.AddrPort, error) {
 	protocol := SystemDeviceInfo.Protocol.Version()
 	key, _ := hex.DecodeString("F0441F5FF42DA58FDCF7949ABA62D411")
 	payload := jce.NewJceWriter(). // see ServerConfig.d
-					WriteInt64(0, 1).WriteInt64(0, 2).WriteByte(1, 3).
-					WriteString("00000", 4).WriteInt32(100, 5).
-					WriteInt32(int32(protocol.AppId), 6).WriteString(SystemDeviceInfo.IMEI, 7).
-					WriteInt64(0, 8).WriteInt64(0, 9).WriteInt64(0, 10).
-					WriteInt64(0, 11).WriteByte(0, 12).WriteInt64(0, 13).Bytes()
+		WriteInt64(0, 1).WriteInt64(0, 2).WriteByte(1, 3).
+		WriteString("00000", 4).WriteInt32(100, 5).
+		WriteInt32(int32(protocol.AppId), 6).WriteString(SystemDeviceInfo.IMEI, 7).
+		WriteInt64(0, 8).WriteInt64(0, 9).WriteInt64(0, 10).
+		WriteInt64(0, 11).WriteByte(0, 12).WriteInt64(0, 13).Bytes()
 	buf := &jce.RequestDataVersion3{
 		Map: map[string][]byte{"HttpServerListReq": packUniRequestData(payload)},
 	}
diff --git a/client/pb/oidb/oidb0xeb7.pb.go b/client/pb/oidb/oidb0xeb7.pb.go
new file mode 100644
index 00000000..3887535d
--- /dev/null
+++ b/client/pb/oidb/oidb0xeb7.pb.go
@@ -0,0 +1,170 @@
+// Code generated by protoc-gen-golite. DO NOT EDIT.
+// source: oidb0xeb7.proto
+
+package oidb
+
+import (
+	proto "github.com/RomiChan/protobuf/proto"
+)
+
+// DEB7 prefix
+type DEB7ReqBody struct {
+	SignInStatusReq *StSignInStatusReq `protobuf:"bytes,1,opt"`
+	SignInWriteReq  *StSignInWriteReq  `protobuf:"bytes,2,opt"`
+}
+
+type DEB7Ret struct {
+	Code proto.Option[uint32] `protobuf:"varint,1,opt"`
+	Msg  proto.Option[string] `protobuf:"bytes,2,opt"`
+}
+
+type DEB7RspBody struct {
+	SignInStatusRsp *StSignInStatusRsp `protobuf:"bytes,1,opt"`
+	SignInWriteRsp  *StSignInWriteRsp  `protobuf:"bytes,2,opt"`
+}
+
+type SignInStatusBase struct {
+	Status           proto.Option[uint32] `protobuf:"varint,1,opt"`
+	CurrentTimeStamp proto.Option[int64]  `protobuf:"varint,2,opt"`
+}
+
+type SignInStatusDoneInfo struct {
+	LeftTitleWrod      proto.Option[string] `protobuf:"bytes,1,opt"`
+	RightDescWord      proto.Option[string] `protobuf:"bytes,2,opt"`
+	BelowPortraitWords []string             `protobuf:"bytes,3,rep"`
+	RecordUrl          proto.Option[string] `protobuf:"bytes,4,opt"`
+}
+
+type SignInStatusGroupScore struct {
+	GroupScoreWord proto.Option[string] `protobuf:"bytes,1,opt"`
+	ScoreUrl       proto.Option[string] `protobuf:"bytes,2,opt"`
+}
+
+type SignInStatusNotInfo struct {
+	ButtonWord        proto.Option[string] `protobuf:"bytes,1,opt"`
+	SignDescWordLeft  proto.Option[string] `protobuf:"bytes,2,opt"`
+	SignDescWordRight proto.Option[string] `protobuf:"bytes,3,opt"`
+}
+
+type SignInStatusYesterdayFirst struct {
+	YesterdayFirstUid proto.Option[string] `protobuf:"bytes,1,opt"`
+	YesterdayWord     proto.Option[string] `protobuf:"bytes,2,opt"`
+	YesterdayNick     proto.Option[string] `protobuf:"bytes,3,opt"`
+}
+
+type StDaySignedInfo struct {
+	Uid             proto.Option[string] `protobuf:"bytes,1,opt"`
+	UidGroupNick    proto.Option[string] `protobuf:"bytes,2,opt"`
+	SignedTimeStamp proto.Option[int64]  `protobuf:"varint,3,opt"`
+	SignInRank      proto.Option[int32]  `protobuf:"varint,4,opt"`
+}
+
+type StDaySignedListReq struct {
+	DayYmd  proto.Option[string] `protobuf:"bytes,1,opt"`
+	Uid     proto.Option[string] `protobuf:"bytes,2,opt"`
+	GroupId proto.Option[string] `protobuf:"bytes,3,opt"`
+	Offset  proto.Option[int32]  `protobuf:"varint,4,opt"`
+	Limit   proto.Option[int32]  `protobuf:"varint,5,opt"`
+}
+
+type StDaySignedListRsp struct {
+	Ret  *DEB7Ret           `protobuf:"bytes,1,opt"`
+	Page []*StDaySignedPage `protobuf:"bytes,2,rep"`
+}
+
+type StDaySignedPage struct {
+	Infos  []*StDaySignedInfo  `protobuf:"bytes,1,rep"`
+	Offset proto.Option[int32] `protobuf:"varint,2,opt"`
+	Total  proto.Option[int32] `protobuf:"varint,3,opt"`
+}
+
+type StKingSignedInfo struct {
+	Uid             proto.Option[string] `protobuf:"bytes,1,opt"`
+	GroupNick       proto.Option[string] `protobuf:"bytes,2,opt"`
+	SignedTimeStamp proto.Option[int64]  `protobuf:"varint,3,opt"`
+	SignedCount     proto.Option[int32]  `protobuf:"varint,4,opt"`
+}
+
+type StKingSignedListReq struct {
+	Uid     proto.Option[string] `protobuf:"bytes,1,opt"`
+	GroupId proto.Option[string] `protobuf:"bytes,2,opt"`
+}
+
+type StKingSignedListRsp struct {
+	Ret               *DEB7Ret            `protobuf:"bytes,1,opt"`
+	YesterdayFirst    *StKingSignedInfo   `protobuf:"bytes,2,opt"`
+	TopSignedTotal    []*StKingSignedInfo `protobuf:"bytes,3,rep"`
+	TopSignedContinue []*StKingSignedInfo `protobuf:"bytes,4,rep"`
+}
+
+type StSignInRecordDaySigned struct {
+	DaySignedRatio    proto.Option[float32] `protobuf:"fixed32,1,opt"`
+	DayTotalSignedUid proto.Option[int32]   `protobuf:"varint,2,opt"`
+	DaySignedPage     *StDaySignedPage      `protobuf:"bytes,3,opt"`
+	DaySignedUrl      proto.Option[string]  `protobuf:"bytes,4,opt"`
+}
+
+type StSignInRecordKing struct {
+	YesterdayFirst    *StKingSignedInfo    `protobuf:"bytes,1,opt"`
+	TopSignedTotal    []*StKingSignedInfo  `protobuf:"bytes,2,rep"`
+	TopSignedContinue []*StKingSignedInfo  `protobuf:"bytes,3,rep"`
+	KingUrl           proto.Option[string] `protobuf:"bytes,4,opt"`
+}
+
+type StSignInRecordReq struct {
+	DayYmd  proto.Option[string] `protobuf:"bytes,1,opt"`
+	Uid     proto.Option[string] `protobuf:"bytes,2,opt"`
+	GroupId proto.Option[string] `protobuf:"bytes,3,opt"`
+}
+
+type StSignInRecordRsp struct {
+	Ret        *DEB7Ret                 `protobuf:"bytes,1,opt"`
+	Base       *SignInStatusBase        `protobuf:"bytes,2,opt"`
+	UserRecord *StSignInRecordUser      `protobuf:"bytes,3,opt"`
+	DaySigned  *StSignInRecordDaySigned `protobuf:"bytes,4,opt"`
+	KingRecord *StSignInRecordKing      `protobuf:"bytes,5,opt"`
+	Level      *StViewGroupLevel        `protobuf:"bytes,6,opt"`
+}
+
+type StSignInRecordUser struct {
+	TotalSignedDays         proto.Option[int32]  `protobuf:"varint,2,opt"`
+	EarliestSignedTimeStamp proto.Option[int64]  `protobuf:"varint,3,opt"`
+	ContinueSignedDays      proto.Option[int64]  `protobuf:"varint,4,opt"`
+	HistorySignedDays       []string             `protobuf:"bytes,5,rep"`
+	GroupName               proto.Option[string] `protobuf:"bytes,6,opt"`
+}
+
+type StSignInStatusReq struct {
+	Uid           proto.Option[string] `protobuf:"bytes,1,opt"`
+	GroupId       proto.Option[string] `protobuf:"bytes,2,opt"`
+	Scene         proto.Option[uint32] `protobuf:"varint,3,opt"`
+	ClientVersion proto.Option[string] `protobuf:"bytes,4,opt"`
+}
+
+type StSignInStatusRsp struct {
+	Ret           *DEB7Ret                    `protobuf:"bytes,1,opt"`
+	Base          *SignInStatusBase           `protobuf:"bytes,2,opt"`
+	Yesterday     *SignInStatusYesterdayFirst `protobuf:"bytes,3,opt"`
+	NotInfo       *SignInStatusNotInfo        `protobuf:"bytes,4,opt"`
+	DoneInfo      *SignInStatusDoneInfo       `protobuf:"bytes,5,opt"`
+	GroupScore    *SignInStatusGroupScore     `protobuf:"bytes,6,opt"`
+	MantleUrl     proto.Option[string]        `protobuf:"bytes,7,opt"`
+	BackgroundUrl proto.Option[string]        `protobuf:"bytes,8,opt"`
+}
+
+type StSignInWriteReq struct {
+	Uid           proto.Option[string] `protobuf:"bytes,1,opt"`
+	GroupId       proto.Option[string] `protobuf:"bytes,2,opt"`
+	ClientVersion proto.Option[string] `protobuf:"bytes,3,opt"`
+}
+
+type StSignInWriteRsp struct {
+	Ret        *DEB7Ret                `protobuf:"bytes,1,opt"`
+	DoneInfo   *SignInStatusDoneInfo   `protobuf:"bytes,2,opt"`
+	GroupScore *SignInStatusGroupScore `protobuf:"bytes,3,opt"`
+}
+
+type StViewGroupLevel struct {
+	Title proto.Option[string] `protobuf:"bytes,1,opt"`
+	Url   proto.Option[string] `protobuf:"bytes,2,opt"`
+}
diff --git a/client/pb/oidb/oidb0xeb7.proto b/client/pb/oidb/oidb0xeb7.proto
new file mode 100644
index 00000000..2b3d0746
--- /dev/null
+++ b/client/pb/oidb/oidb0xeb7.proto
@@ -0,0 +1,165 @@
+syntax = "proto2";
+
+option go_package = "github.com/Mrs4s/MiraiGo/client/pb/oidb";
+
+// DEB7 prefix
+message DEB7ReqBody {
+  optional StSignInStatusReq signInStatusReq = 1;
+  optional StSignInWriteReq signInWriteReq = 2;
+}
+
+message DEB7Ret {
+  optional uint32 code = 1;
+  optional string msg = 2;
+}
+
+message DEB7RspBody {
+  optional StSignInStatusRsp signInStatusRsp = 1;
+  optional StSignInWriteRsp signInWriteRsp = 2;
+}
+
+message SignInStatusBase {
+  optional uint32 status = 1;
+  optional int64 currentTimeStamp = 2;
+}
+
+message SignInStatusDoneInfo {
+  optional string leftTitleWrod = 1;
+  optional string rightDescWord = 2;
+  repeated string belowPortraitWords = 3;
+  optional string recordUrl = 4;
+}
+
+message SignInStatusGroupScore {
+  optional string groupScoreWord = 1;
+  optional string scoreUrl = 2;
+}
+
+message SignInStatusNotInfo {
+  optional string buttonWord = 1;
+  optional string signDescWordLeft = 2;
+  optional string signDescWordRight = 3;
+}
+
+message SignInStatusYesterdayFirst {
+  optional string yesterdayFirstUid = 1;
+  optional string yesterdayWord = 2;
+  optional string yesterdayNick = 3;
+}
+
+message StDaySignedInfo {
+  optional string uid = 1;
+  optional string uidGroupNick = 2;
+  optional int64 signedTimeStamp = 3;
+  optional int32 signInRank = 4;
+}
+
+message StDaySignedListReq {
+  optional string dayYmd = 1;
+  optional string uid = 2;
+  optional string groupId = 3;
+  optional int32 offset = 4;
+  optional int32 limit = 5;
+}
+
+message StDaySignedListRsp {
+  optional DEB7Ret ret = 1;
+  repeated StDaySignedPage page = 2;
+}
+
+message StDaySignedPage {
+  repeated StDaySignedInfo infos = 1;
+  optional int32 offset = 2;
+  optional int32 total = 3;
+}
+
+message StKingSignedInfo {
+  optional string uid = 1;
+  optional string groupNick = 2;
+  optional int64 signedTimeStamp = 3;
+  optional int32 signedCount = 4;
+}
+
+message StKingSignedListReq {
+  optional string uid = 1;
+  optional string groupId = 2;
+}
+
+message StKingSignedListRsp {
+  optional DEB7Ret ret = 1;
+  optional StKingSignedInfo yesterdayFirst = 2;
+  repeated StKingSignedInfo topSignedTotal = 3;
+  repeated StKingSignedInfo topSignedContinue = 4;
+}
+
+message StSignInRecordDaySigned {
+  optional float daySignedRatio = 1;
+  optional int32 dayTotalSignedUid = 2;
+  optional StDaySignedPage daySignedPage = 3;
+  optional string daySignedUrl = 4;
+}
+
+message StSignInRecordKing {
+  optional StKingSignedInfo yesterdayFirst = 1;
+  repeated StKingSignedInfo topSignedTotal = 2;
+  repeated StKingSignedInfo topSignedContinue = 3;
+  optional string kingUrl = 4;
+}
+
+message StSignInRecordReq {
+  optional string dayYmd = 1;
+  optional string uid = 2;
+  optional string groupId = 3;
+}
+
+message StSignInRecordRsp {
+  optional DEB7Ret ret = 1;
+  optional SignInStatusBase base = 2;
+  optional StSignInRecordUser userRecord = 3;
+  optional StSignInRecordDaySigned daySigned = 4;
+  optional StSignInRecordKing kingRecord = 5;
+  optional StViewGroupLevel level = 6;
+}
+
+message StSignInRecordUser {
+  optional int32 totalSignedDays = 2;
+  optional int64 earliestSignedTimeStamp = 3;
+  optional int64 continueSignedDays = 4;
+  repeated string historySignedDays = 5;
+  optional string groupName = 6;
+}
+
+message StSignInStatusReq {
+  optional string uid = 1;
+  optional string groupId = 2;
+  optional uint32 scene = 3;
+  optional string clientVersion = 4;
+}
+
+message StSignInStatusRsp {
+  optional DEB7Ret ret = 1;
+  optional SignInStatusBase base = 2;
+  optional SignInStatusYesterdayFirst yesterday = 3;
+  optional SignInStatusNotInfo notInfo = 4;
+  optional SignInStatusDoneInfo doneInfo = 5;
+  optional SignInStatusGroupScore groupScore = 6;
+  optional string mantleUrl = 7;
+  optional string backgroundUrl = 8;
+}
+
+message StSignInWriteReq {
+  optional string uid = 1;
+  optional string groupId = 2;
+  optional string clientVersion = 3;
+}
+
+message StSignInWriteRsp {
+  optional DEB7Ret ret = 1;
+  optional SignInStatusDoneInfo doneInfo = 2;
+  optional SignInStatusGroupScore groupScore = 3;
+}
+
+message StViewGroupLevel {
+  optional string title = 1;
+  optional string url = 2;
+}
diff --git a/client/sign.go b/client/sign.go
new file mode 100644
index 00000000..56e37692
--- /dev/null
+++ b/client/sign.go
@@ -0,0 +1,26 @@
+package client
+
+import (
+	"github.com/Mrs4s/MiraiGo/client/pb/oidb"
+	"github.com/Mrs4s/MiraiGo/internal/proto"
+	"strconv"
+)
+
+// SendGroupSign 发送群聊打卡消息
+func (c *QQClient) SendGroupSign(target int64) {
+	_, _ = c.sendAndWait(c.buildGroupSignPacket(target, 0))
+}
+
+func (c *QQClient) buildGroupSignPacket(groupId int64, scene uint32) (uint16, []byte) {
+	body := &oidb.DEB7ReqBody{
+		SignInStatusReq: &oidb.StSignInStatusReq{
+			Uid:           proto.Some(strconv.Itoa(int(c.Uin))),
+			GroupId:       proto.Some(strconv.Itoa(int(groupId))),
+			Scene:         proto.Some(scene),
+			ClientVersion: proto.Some("8.5.0.5025"),
+		},
+	}
+	b, _ := proto.Marshal(body)
+	payload := c.packOIDBPackage(3767, 0, b)
+	return c.uniPacket("OidbSvc.0xeb7", payload)
+}
diff --git a/go.mod b/go.mod
index ae1a268f..1f705807 100644
--- a/go.mod
+++ b/go.mod
@@ -19,5 +19,6 @@ require (
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/tidwall/match v1.1.1 // indirect
 	github.com/tidwall/pretty v1.2.0 // indirect
+	google.golang.org/protobuf v1.28.0 // indirect
 	gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c // indirect
 )
diff --git a/go.sum b/go.sum
index cee5d5ca..962a0ace 100644
--- a/go.sum
+++ b/go.sum
@@ -7,6 +7,8 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/fumiama/imgsz v0.0.2 h1:fAkC0FnIscdKOXwAxlyw3EUba5NzxZdSxGaq3Uyfxak=
 github.com/fumiama/imgsz v0.0.2/go.mod h1:dR71mI3I2O5u6+PCpd47M9TZptzP+39tRBcbdIkoqM4=
+github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
+github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/pierrec/lz4/v4 v4.1.11 h1:LVs17FAZJFOjgmJXl9Tf13WfLUvZq7/RjfEJrnwZ9OE=
 github.com/pierrec/lz4/v4 v4.1.11/go.mod h1:gZWDp/Ze/IJXGXf23ltt2EXimqmTUXEy0GFuRQyBid4=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
@@ -27,6 +29,10 @@ go.uber.org/atomic v1.9.0 h1:ECmE8Bn/WFTYwEW/bpKD3M8VtR/zQVbavAoalC1PYyE=
 go.uber.org/atomic v1.9.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c h1:5KslGYwFpkhGh+Q16bwMP3cOontH8FOep7tGV86Y7SQ=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
+google.golang.org/protobuf v1.28.0 h1:w43yiav+6bVFTBQFZX0r7ipe9JQ1QsbMgHwbBziscLw=
+google.golang.org/protobuf v1.28.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=